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Document:	Networks Communications Communications Options Minireference Manual Volume 1 General Information and Communications Options
Order Number:	EK-CMIV1-RM
Revision:	002
Pages:	220
Original Filename:

OCR Text

EK-CMIV4-RM-002

Networks - Communication

Communications Options
Minireference Manual
Volume 1

General Information
and Communications
Options

Digital Equipment Corporation

Ist Edition, December 1981

e 1982

2nd Printing (Rev), Jun

2nd Edition (Rev), August 1984

Digital Equipment Corporation 1981, 1982, 1984

The information in this document is subject to change without notice and should
construed as a commitment by Digital Equipment Corporation. Digital

not be

Equipment

Corporation assumes no responsibility for any errors that may appear in this document.

Printed in U.S.A.

This document was set on a DIGITAL DECset Integrated Publishing
System.
e

Class A Computing Devices:

Notice: This equipment generates, uses, and may emit radio frequency energy.
The
equipment has been type tested and found to comply with the limits for
a Class A
computing device pursuant to SubpartJ of Part 15 of FCC Rules, which
are designed to
provide reasonable protection against such radio frequency interference
when operated
in a commercial environment. Operation of this equipment in a residential
area may
cause interference in which case the user at his own expense may be required

measures to correct the interference.

to take

The following are trademarks of Digital Equipment Corporation:

ngna n'”\"

fi
DEC

DECmate
DECnet
DECUS

DECwriter
DELNI

DEREP

DEUNA
DIGITAL

ETHERJACK
LA
MASSBUS

PDP
P/OS
Professional

Rainbow

RSTS
RSX

UNIBUS
VAX
VMS

VT
Work Processor

W\“MMWW %

CONTENTS
Page

CHAPTER 1

INTRODUCTION

CHAPTER 2

FLOATING DEVICE ADDRESS AND VECTORS AND DIAGNOSTIC
SUMMARY CHARTS

e e raaaeeaaan 2-1
FLOATING DEVICE ADDRESSES ................... reeeeeeeenen reeeeen—aeeae
FLOATING VECTOR ADDRESSES ... 2-3
CABLES

CHAPTER 4

TEST CONNECTORS AND TERMINATORS

CHAPTER 5

SPECIAL TEST PROGRAMS

DATA COMMUNICATIONS LINK TEST (DCLT) v ereeeanans e 5-1

Hierarchy PrerequiSites .......couveiiiiiiieeiiiiiiiiiiiiiicei e rrreaen 5-1
System Requirements..........cccoceveeviiiiiennnnenn et et ee et eerere i aareetteeaeeaeeaanranranaeaaees 5-2
Program Structure................. etrereeeeteeeeetantnrrraa—————————————_ eereaens vrr——————— 5-2
eetr e r e ——e e e taaaaaaaaaaaaataaeaaaeeaaneeaaaaans 5-14
Event Log Overview...........ccceovnnnnnnnnn. et
——— 5-16
Running PDP-11/DCLT.....c.ccoooiiiiiiiniininns reeeena e rrereeeee
Running VAX-11/DCLT.....ccccooiiiiiiiiiiiniininne. erereeeeea——— rrraaeas e 5-17
Interfacing DCLT Node-to-ITEP Node.........c.cceonenne. et e et e e e—————————as 5-18
INTERPROCESSOR TEST PROGRAM (ITEP).......... rrrreeeeeaeeaeen—————————eaaaaaeaaas 5-19
i, o eeeeeeeeteeeeeeerrerereha—————— 5-21
USING ITEP
LINK TESTING............ erereeeteeeeeaere————eaaraaeaeaaas e ereeetraeeereea——e—araeeeeaeeaaaeaanans .. 5-24

SPECIAL TOOLS AND EQUIPMENT

s rreree e e ——————— .6-1
tt
eeeiaees
INTRODUCTION...t
BREAKOUT PANEL .......cccoeoieiiiieeeee e e e e e
eer e ee e ——————————as eeean 6-2
MINICHECK ......ooiiiiieeeecccee, errreteeeteaaeae
e abaraa—aaaeaaas ettt eeee—————aaaeaae 6-3
Operational Tests......cccccoeviiiniiiinnnnnnn. et eeettraaraseeeeeieeseeeeteeeerteteren
i aeaaeereens 6-4
Test Results......coeeviiiiiiiiinennieees eeieeereerereaereeeeraaar—anas erereraaaeeeaeeeaaearananns 6-4
Minicheck Self-Test PROCEAUIE ....vvevoevereeeeeeeeeeeeeeeeeesseeeesees rvraaes e s 6-5

Lad
P
e

) D

CHAPTER 6

Lo Lo Lo

\\\\\\\\

e rreereeeeee——ns reeereen———— 5-1
INTRODUCTION ...ooiiiieeneeireeeececeecen

NN
O

~J N

B Wb —

BPLWLRNNNNNDDNN
-

CHAPTER 3

CHAPTER 7

EIA/CCITT DATA

7.1

INTRODUCTION ... e e eeeerbaaraae
e erer——aaaaa e . 7-1

CHAPTER 8

VENDOR MODEMS

8.1

INTRODUCTION .......ccoeviiee eereeeee—————eaan eeees e —— e eee e e e 8-1

CONTENTS (Cont)
Page

CHAPTER 9

DATA COMMUNICATIONS TROUBLESHOOTING

DATA COMMUNICATIONS TESTING WITH “DCLT”: A COOKBOOK
APPROACH ..o
e e 9-1
SYSTEM PREPARATION FOR TESTING..o 9-3

POINT-TO-POINT NETWORK PROBLEM ISOLATION ....oooooooooo 9-4
MULTIPOINT NETWORK PROBLEM ISOLATION....... ervrrr———— ceeverrraaa, e 9-8

DCLT MULTIPOINT UNIQUE COMMAND SUMMARY ..o 9-8
TRIBUTARY STATION(S) COMMAND SUMMARY ......... cerrerea.. e ———— 9-9
ADDITIONAL DCLT FUNCTIONALITY ................ e ererereen. 9-9
MESSAGE SIZE AND TYPE COMMANDS ..o 9-9
RUN MODE COMMAND SWITCHES .......oooooiooooeoeeeeeeeeeeeeeeeeeeeeeo 9-10
PRINTING THE ERROR COUNTERS (DDCMP ERROR COUNTERS) ...... 9-11
DATA COMMUNICATIONS TROUBLESHOOTING USING DECnet .......... 9-12
DECnet DEVICE NAMING CONVENTIONS ......ooooeooeoeeeeeoeeee 9-12
LINE IDENTIFIER CONVENTIONS. ......ooooiiiieoeoeeeeeeeeeeeeeeeeeoeeeo 9-13
CIRCUIT IDENTIFIER CONVENTIONS......oootiooeee oo 9-13
EXECUTOR, CIRCUIT, LINE STATES, AND CHARACTERISTICS ...........
. 9-13
CIRCUIT LINE STATES AND SUBSTATES......... et
e et e
—————— 9-14
LINE CHARACTERISTICS.........coooveeeevev, ett
————— ettt
t
a——.——— 9-15
CIRCUIT CHARACTERISTICS ... 9-15
EXECUTOR CHARACTERISTICS..........oooooeeoeeeeeeeee e 9-16
NCP COMMANDS ...
e 9-16
DECnet ERROR LOGGING .................................................................................... 9-16
CIRCUIT COUNTERS........ooiiiiiiiiieeeeeeeeee e, et
——————————— 9-17
LINE COUNTERS ...t 9-18
CHANGING CIRCUIT AND LINE MODES OF OPERATION ....................... 9-19
CREATING A PSEUDONODE ...........oooiiiieeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeoo 9-22
DECnet TEST COMMANDS...ttt e
e e aeeeeeee . 9-22
EXAMPLE COMMANDS........cccocvvvn.. e et
ettt
e e e e e e e e e eaens 9-23
DECnet TESTING PROCEDURES..........cooiiiooeeeeeoeeeeeeeeeeeoeeeeeeo
. 9-23

DH11

INSTALLATION

DHI11 O‘PTION ........ et

——————————— e
e eae e e ettt
a— .. DHI11-1

DHIT General Description.............c.oooiuieoueoeeeeeeeeeeeeeeeeeoeeeeeoo
. DHI11-1

DH11 Features........... ett
ee t
e aeenes —— e ————————— DHI11-1
DHI1 Reference Documentation.............c.ooocveoeeeoereeoeeoieeeoooeoo .DHI11-1
QMA DHI11 Components List.......ccccovevveeveeeerinrnn, v ceere—————————— DH11-2
Priority Plug Placement ............ccoooooiiiiiiiioiiieeeeeeeeeeeeeeeoeoee DHI11-17
H317-B Modem Signal Jumper Selectlon ........................ e
enaas DH11-27
DHI1 Cabling .......oooovviiiiiiiiceieeeeieeeee et
et
aeaerra———— DHI11-28
DHIT DiagnoStics.........ccooovuivvieeeeieeeseoeeeeereeenan, et ... DHI11-36
CZDHM Diagnostic SUMMATY.........cccoevvemeeeeeeeeeeeeeeeeeeoeee, DH11-37
CZDHN Diagnostic SUMMATY ..........ccoooeiveveoeeeeeeeeeeeoeeoeoo, DH11-37
DZDHK Diagnostic Summary.......... ett
e ea
et
eeeeaeanaas DH11-37

Running DHI1 Diagnostics ...........cccveevvemvveoee oo, DH11-37
Running CZDHM and CZDHN Diagnostics..........cooovvvvovvooneon, DH11-37

CONTENTS (Cont)
Page

Running DZDHK Diagnostics.......... v —————— eeeaeeeeeaeanes .. DH11-42
ieiiiniiiiiei e DHI11-44
TS
DHI11 Register Bit ASSIZNMEN......cooiiiiiiiri
DH11 Tech Tips/FCO Index..........cccoovennininns e —————— ceees DHI11-46
DHU11

INSTALLATION

e e a———— eereeeereaaaa— DHU11-1
e, et
DHUI1I1 OPTION ....oooviiiiiiieiiiirine
e—e e ——atteea———————a——————atatttateeeattaeaaearaeas DHUI11-1
DHUI11 General Descnptmn ..... et
PPPPPR DHUI11-1
PP
DHUI11 Features........ TSSOSO
——————aaeanaes erreeeeee e DHU11-1
DHUI11 Reference Donumentatxon ........ e
DHUI11 Components List ............... e ber e ——ar———————————————atins eerrerrrerrr—————— DHU11-2
Device Placement................... eeeraeeeeeeteteteera————————naaeaaaaraanes .. DHU11-3
— et ————— e ataaae et aaeeaaaaaaeaeas DHU11-11
DHU11 PDP-11 Diagnostics............. ett

Running DHU11 Diagnostics ..........cccooeeiiicenncss e ————————— DHUI11-11
Running VAX-11/DHUI11 Diagnostics .........cccccoceeiininnnn eeees DHU11-13
DHUI11 Register Bit Assignments......... e rr e ————aetaaaaaes rrrrrara——— DHUI11-15
DHUI11 Tech-Tip/FCO History .......coccoveriiiiiieeninnee rerraeeeens eeereeaans DHU11-18

DHV11

INSTALLATION

e ——— et rerereeeeans DHV11-1
DHVI11 OPTION ..o, e
neeee -]
DHV 11 General DesCription........cccoooeiiuniiiiinieeiienieiieineeee ceveeeeeeeDHV
...DHVI1I-1
UPUPPPRRR
DHV11 Features ..........SRS PSS
DHV11 Reference Documematmn....M....... .............. e —————— _,DHVI 1-1
DHV11 Components List........cccccooiiiriiiiiniiianiiiinein rrerera———— DHVI11-2
raa e aaaaaaaeeeeeneeaeaas DHVI11-2
Device Placement........cccccceviiiiiiniiiiiniinnnnnne. et erer e
iice DHV11-2
e
Power Requirements/ LS[ Bus Loading .....ooveevvvieeeeceeiii
DHV11-10
esenenes
————————eeeae
t
e
niinieceeennnnn.
cccooivmmmiririeen
DiagnostiCs.......
DHV 11
DHV11 Q-Bus Processor Family Diagnostics................. e—————————— DHVI11-10
Running DHV 11 Diagnostics .........cccoevuimiirnicniiniiiniininnn, ...DHV11-10
DHV11 Register Bit AsSignments ...........cccoevveniiiniiiiiininnn e DHVI11-12
DHV11 Tech-Tip/FCO History .....c..ccccoeennne. e e eea—— errereeeeeaan DHVI11-15

CHAPTER 1
INTRODUCTION

provide Field Service personnel,
The Communications Options Minireference series of manualsoptions,
DEC modem products and
tions
communica
on
Corporati
t
Equipmen
Digital
in
TRAINED
essential installation and maintenance
ETHERNET products with easy-to-use references that zero in on

procedures.

Options Minireference
This series of manuals is a replacement and supersedes the Communicination
ation Options
Communic
the
contained
was
that
on
informati
the
of
All
Manual (EK-CMINI-RM).
Corporation new
Minireference Manual is included. Information concerning most of Digital Equipment
communication options and modem products has also been included. These manuals will be updated as
new communication options and modem products are produced.

n, it is important
To effectively use these reference manuals and to quickly locate the desired informatio
Volume one contains
that the user be aware of the organization and content of the various manuals.
rs, Special Test
generic communications information such as: Cables, Test Connectors and Terminato
on concerning installation
Programs, Special Tools and Equipment. Volume one also contains informati
tions options. Communicaand maintenance of some of the options. Volume two contains only communicaand
flowing into Volume two.
one
Volume
in
tions options are presented in alphanumerical order beginning
Products. Volume
Modem
on
Corporati
t
Equipmen
Digital
g
concernin
n
informatio
contains
Volume three
products.
ET
ETHERN
of
ce
maintenan
and
n
four contains information concerning installatio
In volume one and two, option specific data is presented by option designation; that is, DH11 followed by
DHUI11, DHV1I through DZVI11.

on established the Qualified
With the advent of new FCC regulations, Digital Equipment Corporati
Information which reflects
options.
tion
communica
older
it’s
of
some
modify
to
Project
Module Assembly
page.
the modifications is indicated by QMA as part of the title of each applicable

specific section is organized
Also, for consistency and familiarity, the material contained in each option
installation flowcharts,
includes
(which
data
n
installatio
sequence;
and
format
same
the
in
presented
and
mper selectable
switch/ju
other
various
and
selection,
address
tor
module outline drawings, device/vec
options) is presented first. This material is followed by cabling diagrams, diagnostics (PDP-11, VAX-11 or
both), maintenance aids, register bit assignments, and Tech-Tip/FCO index.

-1

CHAPTER 2
FLOATING DEVICE
ADDRESSES AND VECTORS
AND DIAGNOSTIC
SUMMARY CHARTS

2.1

FLOATING DEVICE ADDRESSES

UNIBUS addresses 760010 (160010) through 763776 (163776) are designated as floating device
addresses (see the following figure). These are used as register addresses for communications devices and
other devices interfacing with the PDP-11, LSI-11, and VAX-11.
NOTE

Some devices are not supported by LSI-11 and
VAX-11; however, the same scheme applies - that
is, gaps are provided as appropriate. The convention
for assigning these addresses is as follows:
777 777

DIGITAL EQUIPMENT

WORDS

CORPORATION
(FIXED ADDRESSES)

770 000
DR11-C

1K
WORDS

767 777

+
1
USER ADDRESSES

764 000
763 777

K-

WORDS

FLOATING ADDRESSES
TM

760 010

| /80 006
DIGITAL EQUIP CORP (DIAGNOSTICS)
|
760 000
757 777

001 000

000 777

VECTORS

FLOATING VECTORS
g g

VECTORS

00 300

TRAP & INTERRUPT
VECTORS

| 000 000

MK-2190

2-1

A gap of 10g must be left between the last address of one device type

device type. The first address of the next device type must start on a

and the first address of the next

module 10g boundary. The gap of 10g

must also be left for devices that are not install ed but are skipped
over in the priority ranking list. Multiple
devices of the same type must be assigned contiguous addresses.
Reassignment of device types already in
the system may be required to make room for additional ones.

Table 2-1

Rank

UNIBUS
Option

DJI1

DHI11

DQI11

DUI11

5
6
7

DUPI1
LKITA
DMCI11/DMRI11*

DZ117%

DZ32, DZS11
9

KMC11

LPP11

[

VMV21

VMV3]

PWR70

RLI11

LPA11-K

KWI11-C

Reserved

RX11/RX211

Floating CSR Address Devices
LSI-11
Option

DUVI1I

DZV11

RLVI1I

RXVII

Decimal
Size

DR11-W

DR11-B

RMPI1

23
24
25
26

UDASO

DMF32

ISBI11
DEUNA

KMSI11 (DMS)

VSI100

Reserved

KMVI11

32
33

**
T
t

DWI 1
DMVI11

8
4

20
10

4
4

10
10

10%

20%

(DZ11 Before DZ32)

10%

4
4

10
10**

20
lflz

s 4. 1 4
DHVI1/DHUI| smnait gngs,
DMZ32

Modules

RXV211

Octal

8
2

20
4

8
8

DMCI11 before DMRI11
After second device.
DZII1E and DZI1F are dual DZ11s and are treated by the algorithm as two
DZ11s.
Extra devices only.
2-2

2.2

FLOATING VECTOR ADDRESSES

Vector addresses, 300 through 777, are designated as floating vector& These are used for communications
and other devices that interface with the PDP-11, LSI-11, and VAX-11. The LSI-11 floating vector area is
limited to a starting address of 300 through 376. The area from 400 to 450is reseved for LSI-11 devices
ADVI11-A, IBV11-A, and KWV11-A with additional space available above 450 to 777.
NOTE

Some devices are not supported by LSI-11 and
VAX-11; however, the same scheme applies. Vector
size is detemined by the device type.

There are no gaps in floating vectors unless required by physical hardware restrictions (in data communications devices, the receive vector must be on a zero boundary and the transmit vector must be on a 4g
boundary).

Multiple devices of the same type would be assigned vectors sequentially. Table 2-3 shows the assignment
sequence.

Table 2-2

Rank

UNIBUS
Option

1
1
2
2
2
3
4
5
6
7
8
9
10
10
11
12
13
14
14
14
15

DCl11
TUS8%:
KL11 (extra)
DL11-A (extra)
DL11-B (extra)
DPI11
DMI11-A
DNI11
DM11-BB/BA
DHI11 modem control
DR11-A
DR11-C
PA611 (reader)
PA611 (punch)
LPDI11
DTO07
DX11
DL11-C
DL11-D
DLI11-E
Djll

Floating Interrupt Vector Devices

LSI-11 Bus
Option

DVLI11-F
DLV11-]

DRVI11-B
DRV11

DLVI1I-E

Decimal
Size

Octal
Modules

4
4
4
4
4
4
4
2
2
2
4
4
4
4
4
4
4
4
4
4
4

10
10
10*
10*
10
10
10*
4
4
4
10*
10*
10*
10*
10
10*
10*
10*
10*
10*
10*

The vector fm the device orf this type must always be on a 10g boundary.

After the first.

always be on a 10g boundary.
There is no standard configuration for systems with both DCI11 and TUSS.

These devices can have either a M7820 or M7821 interrupt control module. However, it should

Table 2-2

Rank

UNIBUS
Option

16
17

DHI11
GT40

VSVI11

LPSI11

Floating Interrupt Vector Devices (Cont)

LSI-11
Option

Decimal
Size

Octal
Modules

4
8
8

10*

10}

DQI11

KWI11-W

10%

21
22

KWV1l1

DUI1
DUPI11

DUVI1I

4
4

10%*
10*

DVI11

DV modem control
LK11-A

25
26
27

DWUN
DMCI11/DMRI11
DZ11
DZS11
DZ32

28
29

KMCl11
LPPI11

30
31
32
33
34

VMV21
VMV3l
VTVOI
DWR70
RLI11

35
36
37
38
39

TS11, TUSO

40
41

DZV11

RLV1I

RXVl1l1
RXV211

DRI11-W
DR11-B
DMP11

MLI11

ISB11

46
47

DEUNA

UDASO0

10*

4
4

10
10

4
4

10*
10*

LPA11-K
IP11/IP300
KW11-C
RX11/RX211

42
43

DPVI11

4
4

10
10

4
4
4
4
2

2
4
2
4
2

10*
4**
4%*

10
4
10
4**

2
4

4%*

2
DMVI11

10
10

4++

4
2

10
4**

4%
%

The vector for the device of this type must always be on a 10g boundary.
After the first.
These devices can have either a M7820 or M7821 interrupt control module.
However, it should always be on a 10g boundary.
DZ11 before DZ32
MASSBUS device.

2-4

| Y

Rank
49
50
51
52
53
54
55
56
57

Table 2-2

Floating Interrupt Vector Devices (Cont)

UNIBUS
Option

LSI-11
Option

DMF32
KMSI11
PCLI11-13
VS100
~
RESERVED
KMVI1I
Reserved
Reserved
DHUI11

“
|

DHV11

DMZ32

Table 2-3

Device

Decimal
Size

Octal
Modules

16
6
4
2
2
4
4
4
4
12

4
10
10
4
4
10
10
10
10

Link Test/DECX11 Diagnostic Index

DCLT

ITEP

Option

PDP-11

VAX-11

Overlay

DECX/11

DHI1
DHUI11
DHVI11
DLII-E
DL11-W
DLVI11
DMCI1
DMF32

N/A
N/A
N/A
N/A
N/A
N/A
CZCLK
NONE

N/A
N/A
N/A
N/A
N/A
N/A
EVDMC
EVDLF

DZDHL
N/A
N/A
N/A
N/A
N/A
DZDMO
NONE

CXDHA
CXDU
CXDHYV
CXDLA
CXDLA
CXDLA
CXDMC
NONE

DMPI11
DMRI11
DMV11
DMZ32

CZCLM
CZCLK
CZCLM
NONE

EVDMD
EVDMC
N/A
NONE

N/A
DZDMO
N/A
NONE

CXDMD, CMDME
CXDMR
CXDMD, CXDME
NONE

DPV11

CZCLH

N/A

CXDPV

DUI1I
DUPII
DUVI1
DVI1
DZ11
DZ11-X
DZ32
DZV11

N/A
CZDCL
N/A
N/A
N/A
N/A
N/A
N/A

N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A

DZDUO
DZDPF
N/A
DZDVO
DZDZB
DZDZB
N/A
N/A

CXDUA
CXDPB
N/A
CXDVA
CXDZA
CXDZA
N/A
CXDZB

DQI1

N/A

DZDQO

N/A — Not available

2-5

CXDQA

Table 2-4

General Purpose/Functional Diagnostic Index

Option

PDP-11 Systems

VAX-11 Systems

DHI11

CZDHM,CZDHN,DZDHK

DHUI I

CZDHU,CZDHV,CZDHW

None
EVDAH

DHV11
DLI11-E
DL11-W
DLVII
DMCl11

DMF32

DMPI11

CZDHX
CVDHA,CVDHB,CVDHC
DZDLA
DZDLA,DZDLD
DVDVA,DVDVC
CZDMC
CZDME
CZDMH

NONE

CZDMP

CZDMT
DMRI11

CZDMP.
CZDMS
CZDMI

DMV11
DMZ32

CVDMA,CVDME,CVDMT
NONE

DPV11
DQI1

CVDPV

DUI11
DUPI1

DUVI1I
DVI11

DZDQA,DZDQF
DZDUA,DZDUF
DZDPB
DZDPF
DZDUQ,DZDUV
DZDVA

DZDVF

‘

DZI11,

DZDZA

DZ11-X

EVDAI
NONE
NONE

NONE

DZVI1I

DVDZA,DVDAB

NONE

EVDXA
- EVDBA
EVDBB
EVDCA
EVDMC
EVDLA
EVDLB
EVDLC
EVDLD
EVDXA
EVDMA
EVDMB
EVDXA
EVDCA
EVDMC
EVDMA
NONE
EVDAE
EVDAF
NONE
NONE
NONE

3
3
3
2R
2
2R
3
3
3
3
3
2R
3
2R
2
3

EVDCA

2R
3
3

3
2R

EVDUP
EVDUQ
NONE
EVDEA
EVDEB
EVDEC
EVDED

3
3
3

EVDEE

EVDEF

EVDEG

EVDAA

3
2R

EVTBA
EVDAB
EVDAC
NONE

2-6

NONE

EVTAA

DZ32

Level

2R
3
2R

CHAPTER 3
CABLES

CABLES

This chapter contains a line drawing of each cable needed to configure any of the device options contained
in Volumes One and Two of these manuals.

Table 3-1 can be used to quickly identify which cables are used with each option.
Cables are placed in alphanumeric order for speedy reference.

3-1

Table 3-1

Communication Options Cables

CABLES
BCO1R-XX

BCO3M-XX

BCO3N-XX

BCO5C-XX

BCO5D-XX
BCO5L-XX

X | x|

x| x [ x
|

X|X

BCO5M-XX

BCO5Z-XX

BCO6R-XX

XXX

BC55B-XX

BC55C-XX

BC55D-XX

x| x| x| x| x|x

BC55A-XX

BC17E

X|IxX]|x

x| x| x| x

BCO8S-XX

BCO8R-XX

BC55F

BC55.

BC55M-XX

BC55N-XX

7008519

BC55R-XX

7008360

X|X]|x

BC55H

X [X
MKV84-0784

Table 3-1

Communication Options Cables (Cont)

CABLES
BCO1R-XX
BCOTW-XX

BCO2C-XX

BCO2D-XX

BCO3M-XX

BCO4R-XX

BCO3P-XX

BCO5D-XX
BCOSW-XX
BCO6K-XX

BCO6L-XX

X | X I x| X

BCO5C-XX

BCO8BR-XX

BCO8S-XX
BC11U-XX

BC18L-XX
‘BC18M-XX

BC20R-XX
BC20S-XX

BC22N-XX

BC26L-XX

7016428
7018209

MKV84-0785

3-3

BCO1R

RS-232

M970 CONNECTOR

'MALE CONNECTOR

O /3 [ 1

13 %: 25

|
,

MK-3165

BCO1W

%]
Blefe]a
o[olo]c

)

—

)

9SS

- =

S i [

O«

wQO

O-

O“"J

—

r——

QO OsO

Fle[o]e

)

—»o

——K

1
|

J
J

J|@|O|H

Ll@lo]k

» ofll

~N[e[o]m

x[e[o]w

z[e[o]v

BB[@]o]AA

poje@]O]cc

m—

G OE

1€

J[o]o]HH

L[5re]ke

NNo[O MM
RRIOJO]PP

mT[o]o]ss
vwielejuu

* INDICATES CAVITIES
ARE NOT USED

MK-254
9

Mgy,

BC02C
PIN 1

PIN 2

PIN 1

PIN 2

QIO

o] (@)

Q|0

010

olo

PIN 40

PIN 39

MIK- 2654

BC02D
PIN 49

PIN 49

PIN BO

ololojojojolojojojolo

5O .

olojojoloolC

*lololo]olojolojojojojojo

RED MARKING ON EDGE OF CABLE
= o = < T [511 W [O =

PIN 50

Ol0

TRIANGLE

INDICATES
PIN 1

PIN 1

PIN 2

PIN 1

PIN 2

MK-2565

BC03M

RS-232

FEMALE CONNECTOR

—]
25 Ew

m
<

1 ,

MK-3156

BCO3N

MK-2571

3-6

WMM\'

3
/080800800080

000800000000

00000000000
00

0000000000000

BCO3P

MK-2555

BC04R

MATE-N-LOK.
MK-2842

BC05C

RS-232-C MALE CONNECTOR

EONErZD-1<XMN

H856 CONNECTOR

MKVB4-1817

\
25 PIN

BCO5D-25 (RS-232-C INTERFACE) MODEM CABLE

CINCH
MKVB4-1618

BCOSM

MATE-N-LOK

pe < ]

cCooEx

]

o
o

NXC-LDZEeON

fi fii}_

‘#geceecec}z‘

AR SIS
R
LB B

2 fi§<i:aa§z:mfi>,

H856 CONNECTOR

CONNECTOR

MKV84-1619

3-8

zZs , fiol«x

g2R.0* sxoo4w2o4O5ob~

BCOSW

S35

2oT~Z a1

S¥o

—— -- — 8

BCOSZ

9 0C®O® 900

73] fon @<« Z «

3-9

E2-S{x[o]ololojojojojejelo

ACEHKMPGUWYMCEHKMF&U

il " -

312

& o) b o]

MK-2550

BCO6K
PIN2

PIN1

PIN2

PIN 1

TRIANGLE

NOICATES

RED STRIPE

PIN 1 (2 PLACES)

O[0]

010
o](e]
(e][e]

QIO|
(e][e]

Q10|
O[O]
o][e]

o] [e]
0|10

[e)(e]

‘
]

[e][e)

‘

PIN4O

o\ 39

TWIST RIBBON CABLE CONTAINS A TWIST
SECTION EVERY 21

INCHES. THERE MUST BE

AN ODD NUMBER OF TWIST SECTIONS
WITHIN ANY LENGTH VARIATION OF

’

BCO6K CABLE.
‘

MK-2567

BCO6L

%
[
sy

PIN 2

PIN 1

JeECEEEEEsEEEE

PIN 1

Slololcloloioiclololoiclololoo

PIN 2

TRIANGLE

INDICATES
PIN 1 (2 PLACES)

L —

WIRE TWIST SECTION(S) TO BE LOCATED
IN APPROX CENTER OF CABLE AND A

O]
E

O]
% ;
AN

MINIMUM OF 3 INCHES FROM CONNECTOR

PINBSO

PIN 49

;/fig\a\\\‘ wmm %?b

j—
"

PIN 50

PIN 49

MKVB4-1821

BCOSR

H856 CONNECTOR

H856 CONNECT OR

RR """“"'

}4—_ o]

Fl_1
J_

SUMErZo-<

rpOMIZTpvocE

e
s
—u
1w
1y

|AA
BB
D
cc
FF
EE
1 IHH
Jo

|€
H
|

LT IKK

NN
T
Imm
| |pP
RR[

*rrtm sS

Juu

MKVB4-1622

BCO08S

40-PIN SOCKET

}Q—— o1

<ECOHOVZTXIMODP

SOCKET

—

[

| |

DX -DEZre NOET

4 +0-PIN

s |¥

FlL_|

lc
1€

1T 1n
J_
L1k

T Im

BB|
DO
FF[__|

AA
| 1AA
|EE

NN
RR[_|

IMM
|
_1pPP

Juu

R[C1T1p
T
1 1s
v
1 lu
X
w
Ty
Z

1ITHH

"-— TTL L1SS
MKV84-1623

§<§cmmgxxmfi>"

N O00000000000a000a0a0ea,

P1, P2, P3, P4

NX<
42 rrCnOoOm®

an 30IS SIHL

TYPICAL 4 PLACES

‘mMON0000000000000ooooaon

500008000000

0000000000000

BC11U

* INDICATES CAVITIES
ARE NOT USED

MK-2552

BC17E-25

34 PIN DDS

37 PIN D-SUB
MKV84.0786

—~

BC18L/M

kM‘%@

MKV84-0787

BC20R

MK-2577

BC20S

MK-2570

3-13

BC22D-**

25 PIN D-SUB

BC22E-**

25 PIN D-SUB

BC22F-**

(

—
25 PIN D-SUB

MKV84-0788

BC22N-**

MKV84-0797

3-14

ififig#ififigiicfifigxxmfib
¢ffi'5gxsz3

oW
[
n 2

x|e[o]ole]o[o o[ojoje[o]e]oje[e]o]o

8000088000900

feeeecescceee

Sd3ZFEREBNX<ADIZremOw

BC26L

* INDICATES CAVITIES
ARE NOT USED

MK-25661

BCS5A

Appropriate terminator connectors H3257 or H3258 must be used.

FEMALE CONNECTORS
A|

BC55A-10 (INTEGRAL MODEM) PANEL CABLE

MALE CONNECTORS

CONNECTOR PANEL
(FRONT VIEW)
MKV84-1624

3-15

BC55B

BC55B-10 (RS-422-A INTERFACE) PANEL CABLE
MKV84-1625

BC55C

NOT USED
IN DMP11
MOUNT WITH CABLE

RIB SIDE FACING OUT

RS-232-C

RS-423-A

\
— W8
— W9

3 W10

ol&

W11

W12

1 W3

3 W13

o W14

) W15

o W4

I W2

o W16

3 WH

W17

1 W6

o W18

1 W7

CIW20

CTIWI19
|

——

(T3]

w21

BC55C-10(RS-232-C/RS-423-A) INTERFACE PANEL CABLE
MKV84-1626

BC55C

Modem Option Jumper Functions

Table 3-2

So/&Y )eA

— A

2PIN WMPen/VA 5/ 5/WA
Iwt [ INJIN|

2
3
4

/)5S /S YA/E RS
</

WENYEYSSYA

|wiol

IN | N

IN ] INJIN ] IN]IN]IN[IN

BA
BB
CA

22
23

|RR | 109

SF | 126

SCF | SRR | 122

IN | IN ] IN ] IN | IN | IN

{W6 | IN

IN | IN | IN ] IN | IN|IN

|ws | IN

IN | IN ] IN | IN | IN | IN

SBB | SRD | 119

LL | 141
SCA | SRS | 120
|108
cCD |TR

|w20|

{wig| N | IN ] IN ] N[

|wie]|

W13

[w21]

W12

24 | W15
wio|
25 | w11
w9
w8

IN | IN | IN | IN

N | IN | IN ] IN|

|
18 | W17
19 |wa | IN
|
20

|106

{w3 | IN

13 |w2 | IN

|cs

cB
CF

11 |w14

|[103
[SD
|RD | 104
|105
|RS

101

|bm |107
cc
AB | SG | 102

8
9

/S
s )8
w /O

¢/

6
7

IN|]IN]|IN

&) /&¥

2/ 8/ DS
/&) VIS/
AP PN

IN | INJIN | IN
IN|

INJINJIN]|IN

IN | IN | IN | IN | IN|

IN
IN | IN | IN

IN | IN | IN [ IN | IN | IN

IN | .

IN | IN

SCB | scs | 121

SBA |SSD | 110
DB

|ST

|114

|RT

|[115

|sa

[110

CE
CH
cl

RL | 140
|125
|Ic

|SR

[sSF

|111

[112

|[116
ss
[113
|TT
SB |117
TM | 142
MAKE BUSY

*RS-232-C DEFINES BOTH SIGNALS FOR THIS PIN
+ CCITT MODEM A ONLY

MKV84-0789

BC55D

BOXH
I8

Ii®
ik

| ]

37 PIN
CINCH

BC55D-33 (RS-422-A/RS423-A INTERFACE) MODEM CABLE

MKV84-1627

FEMALE CONNECTORS

RECEWE@ TRANSMIT
“!

_IN

‘“E‘MIlll!H!S!‘!‘HH!(I‘I‘!‘BI‘
BC55F (INTEGRAL MODEM) PANEL CABLE

MALE CONNECTORS

CONNECTOR PANEL
(FRONT VIEW)
MKV84-0790

3-18

BCSSH

NOTE

The BCS55F cable is very similar to the BC55A. The
only difference is in the connector panel configuration (see BC55A).

0g
J3

UlfinQnD»nUQUQUulwl

i *¢nmnntuuolmwuualnflwY¥~
“

32-C/RS-423-A) INTERFACE PANEL CABLE

MKV84-1628

3-19

BC55H

Table 3-3

BCS55H Modem Option Jumper Functions

N
FUTURE
D

X.21BIS

/ X.20BIS
o

JEYS/E/ )

| IN

W5 | IN
W6

| IN

|IN

/o~

NVANVANY

L LSS5/

| IN | IN

IN | IN|

IN|

INJIN

IN
IN

INTIN|IN
IN

w8
w9

[ IN

INJ

INJTIN[INTINJIN|IN|

INT

W11

INTIN

W12

)T/
S

| SR

|111

| sa

[110

| 126

[SF

[112

SBB|SRD|

110
118

[ IN | IN

INJIN]IN[INJIN|[IN|

SBA|SSD|

INJINJIN[IN|IN|IN]

SCF|SRR|

IN ] IN

IN'|

IN | IN

IN ] IN | IN

w14

122

[ 140

[705

INTINT

IN]T

INT

[ST

| 114

INJIN]

INT

INTIN

W13 | IN

IN | IN | IN

W10 | IN

IN | IN

INJINJ

INTINTIN|IN|

[RT

|115

| 141

SCA[SRS | 121

NOT NORMALLY INSTALLED

W15

W16 | IN

W17

WiE

W19 | IN

W20

W21

IN | IN

IN | IN
IN|

IN[IN]

TM | 142
DA

IN
IN

[ IN

INTINTIN
[ INTIN[

INTINTINTINTIN

INJIN[IN]INJIN[IN|]

[113

| 117

[116

SCB|SCS | 121
AA

[TT

MAKE BUSY
IN

101

[ SD

|103

BB [ RD | 104

6
7

20
22

[cs

|106

| DM

[107

[ sG

[102

| RR

| 109

| TR

[108

[IC

[125

MKV84-1629

3-20

E S E )L

CG
IN

INJINJTINJTINTINJINTINTINTIN[INJINTIN|

;

S/ S/F/5/S/S/)S/S/5/S/E/F
IN

| IN

L)L) L)L

TINNIS

S /855 )&

/0o

BCS55J

FEMALE CONNECTORS

MALE CONNECTORS

CONNECTOR PANEL
(FRONT VIEW)
MKV84-1630

BC55M

Cable is used for the same purpose as the BC55N, but for data rates above 56K b/s.
USES: BELDEN 8232 — UP TO 4.3 KM (14K FEET)*
BELDEN 8233 — UP TO 6.0 KM (18K FEET)*

—3

BC55M TRIAX CABLE

*MAXIMUM DISTANCE IS DEPENDENT ON SPEED.

REFER TO M8203 TECHNICAL MANUAL, EK-M8203-TM FOR DETAILS.
MK-3605

3-21

BCS5N

Cable is used to interconnect local (integral) configurations for a selected

data rate of 56K b/s.

USES: BELDEN 9272

;

|
BC55N TWINAX CABLE
MK-3606

Recommended connector hardware for building BC55 type cables

in excess of 30 m (98 feet):

Component

DIGITAL Part Number

AMP Part Number

Small cable clamp
Large cable clamp
Male housing
Male pin
Female housing
Female pin

12-11430-00
12-11430-01
12-12527

206358-1
206153-1

14 ga male pin

206062-1

12-12001

66589-2
206060-1
66590-2

12-12526
12-12000
12-12001-1

66587-2

3-22

@ouO‘0’1

POSPAN

1s3i

3MIA

3-23

BC55S TRIAXIAL CABLE*

*FOR SPEEDS UP TO:
500K bits/s (FULL DUPLEX)
1M bits/s (HALF DUPLEX)

BC55T TWINAX CABLE*

*FOR SPEEDS UP TO 56K bits/s
MKVvV84-0791

BC56A TRIAXIAL ADAPTOR CABLE*

*USE ADAPTOR CABLES WHEN CONNECTING BC55R

m—

INTEGRAL MODEM PANEL/CABLE TO OLDER STYLE

NETWORKS USING BC55A OR BC55J INTEGRAL
MODEM PANEL/CABLES.

MKV84-0792

3-24

70-08360

]
%]
BIO|@®]A
plolo]c

FIO|@]E

JloJelH

Liole]k
n[olo]m
rlolole

218

4|8
g 3

Tlole]ls

vio[o}ju

xfololw

Zjojo}y
ss[O[@]AA

ppfolO]cc
HEI0E:

6 8

JJfolo}nH

19¢F

8| O f

kk
LLlole]

nNjoloimm

RRIO[@]PP

S
i BIE

wlelejuu

kdkd)
*

INDICATES CAVITIES
ARE
NOT USED
ME-2653

70-08519

C_Io :

8 o_l_:::
711

@ 5

5 °

] :

2|l

0_]':1

O 4

; o
4

® 7
3

r::,LO

LOCATING
PIN
MK-2573

3-25

70-16428

¥ |¥

Blole]a

plolo]c
Flole]e

|
e

JlolelH

Llole]«k

Nfolo]m
rlO]@]P
tfolols

—
B
=
N

xc»ou

—

ololw

z[olo]v

a ([

BB[O[O1AA

»]s] [e)[e] [elo
FFIO]O]eE

=
"

NNi@ O MM

__.J _~

JJJo[oHH
LLfo Ol kK

T
=

RR{OJO}PP

TTIO|O}SS

MEK-2569

::G_J

wilolofuu
*|%

* INDICATES CAVITIES ARE USED TO
MOUNT STRAIN RELIEF

70-18209

PIN 13 [

| PIN
25
=1 =

112
o

PIN 1[4

——

PIN 14

g, ‘%%

i
MK-2807

3-26

CHAPTER 4
TEST CONNECTORS
AND TERMINATORS

TEST CONNECTORS AND TERMINATORS

This chapter contains a line drawing of each of the test connectors and terminators needed to test any of
the device options described in Volume One and Two of these manuals.

Table 4-1 can be used to quickly identify which test connectors and terminators are used with each
communication device.

Test connector drawings are placed in alphanumeric order for speedy reference.
Terminator drawings follow test connector drawings.

Most test connectors and terminators are used with more than one device option.

Table 4-1

Test Connectors and Terminators for Communication Options

CONNECTORS
H315
H325
H861C

H3248

XlIx | X

H3254
H3255

H3276

I XX
| X

H3251

H3250

X | X | XX
| X

H3249

H3277
H8568

H8611

M974

12-12528

TERMINATORS

H3257
H3258

H8570

MKV84-0775

Table 4-1

Test Connectors and Terminators for Communication Options (Cont)

CONNECTORS
H315

X | X

H325

H327

X | X

H329

H861
H3027

H3028

H3190

H3248

H3259

H3260

H3271

X |x

H3272

H3273
H3274

H8612

29-24929-00

TERMINATORS

MKV84-0776

4-3

H315
CABLE

BACKPLANE

CONNECTOR

CONNECTOR
EXTERNAL CLOCK

| L

TRANSMIT CLOCK

3 f——

RECEIVER CLOCK

J2 etk

TRANSMIT DATA

]

RECEIVE DATA

]

—

DATA SET READY

|y R

SECONDARY TRANSMIT DATA

SECONDARY RECEIVE DATA

2 p———

DATA TERMINAL READY

P2 —

@)@::::::::: 3 O

—

—-—-<--+<1
|
»—+<12
l

—-——<——r<2

——

CABLE

CONNECTOR

——»—-—}-—(8

CARRIER DETECT

L——+5

cLEAR TO SEND

v p——

l
—-«-—T<4

REQUEST TO| SEND

[ J—

BACKPLANE

t—>—4<25

FORCE BUSY

Y ——

CONNECTOR

-——’-—-|<2

RING

Y7 ———
ME- 2528

H325

SCE
scT

SCR—e

SEC XMIT

—p—

SEC RCV

XMIT DATA

———-2

CUT TO TEST
12

rov oATA—

NEW

SIDE 1

| SYNC

o)AN
f'e

® e 00 0600000
060

RS ——

Csm..q..mfi.....

CO——a—8

NEW SYNG

——tpetd

DATA SET RDY

——a—

H325

|
O\

DTR

CUT TO TEST*
NEW SYNC

MKVB4-0782

4-4

SFLY

e e g

0D BNOOO
BN

KRNXo

~N
W =0~ O O~T1W—

oje|e]eleje]e|e]ein]
‘-“i-vi" oj
{oloje]o]eo]e]o|e[c]eo]e]o|e|ee|c|e|ele

£ b

20
26
24

38
44

49|

23
19

35
31

4-5
e e}

=R
E
o¢

3g§§§!§&3@w&

- = O

ll i l l l !x!%lmlfllzlfilfi!%

X EEEErErrrrrrrrrrrrrrrrrrrrrrr
rrrr 'k k’xx)

H327

CARRIER 1

CARRIER O

CARRIER 2 .

CARRIER 3

CARRIER 4

CARRIER 5

CARRIER 6

| RING O

CARRIER 7

- RING 2

RING 1

RING 3

RING 4

RING 6

RING 5

RING 7

ATMODP

TRANSMIT O

» RECEIVE 1
»

DTR O

RING 1

l——————’ CARRIER 1

cmrgxzmflg 2

o438

COUDVIZAIMOPLSCOITE

Ui
I un o

B008E000ME0RE00EE80008

Sd32FERB
B nx<imzrcmow®

B000E00809900085=:0068

H329

CARRIER O

DTR 1

RECEIVE O

TRANSMIT 1

NOTE:
LINES 2 & 3 ARE STAGGERED
IN THE SAME WAY.
MAK-2645

* INDICATES CAVITIES ARE NOT USED

H861

D>
E>
F>
HD
J>

, SECRX 15913
.
L
U
T
.

B
oy SEC TX 159,13
S| SECRX3,7,11,15

. :sec TX 3,7,11,15

‘

K 5t -0 3.7.11.15

€S 37,1115

N9y CS 1.59.13
Pyl
RS3.7.11,15
Ld

RS 15913

gy_I DTR3,7,11,15
>

DTR1,59.13

" T ANG371105
#

—
_

SEC RX 2.6,10.14

SECTX04.812

?
|

AA
St €O 2,6,10,14

2|l

ol €0 0.4.812

SEC RX 0.4.8,12

| SECTX 26,1014

.
.

v:: T RING 1.5.9.13
U

51 €0 15913

ch | CS 2,6,10,14

|
e

—

5D$— €S 04,812

DTRO.4:8,12

RING 0,4,8,12

>—

wWH—L

DTR 2.6,10,14

HHY—
14

L RS 048,12

;

NOTE:

TURNAROUND SIGNAL FLOW AND PINNING
ARE IDENTICAL FOR ALL 4 CONNECTORS (J1-J4)
MK-2630

4-6

H3027
SIGNAL NAME (REFERENCED TO H3027)

PIN NUMBER
DATA OUT A (+ =i

CHASSIS GROUND

DATA IN A (4]

CHASSIS GROUND
UNUSED

UNUSED
UNUSED
UNUSED

DATA OUT B (—) ——»—
10

UNUSED

DATA IN B (=)

UNUSED

SIGNAL GROUND

UNUSED

—~

MKVBA-0777

H3028
J1 PIN NUMBER

SIGNAL NAME

E WK

DATA IN A (+) ——
DATA IN B (—)

SIGNAL GROUND
UNUSED

UNUSED

W -

UNUSED

DATA OUT A (+} —
DATA OUT B (—) —

=
o

UNUSED

MKVE84-0778

LINE O

mm
&' m

20 MA LOOP

m
Bo

o 8o

(

H3190

20 MA LOOP

A
WY

LINE O

RECEIVER

x O

TRANSMITTER

LINES 283, 485 AND 687 ARE STAGGERED THE SAME WAY

FY Y.y

RECEIVER

mm
O

mm O

LINE 1

mnOp 8o moOp

TRANSMITTER

WAK- 2647

H3248

SINGLE LINE

LOOPBACK

9
%
&

BN BN NN BN

&
&
5
&
%

1
1

H3249 STAGGERED

O
REAR VIEW

[E X N N N ]

H3249

[ 3R BN BE BN

H.fi_()‘\?
¥4
o 0;—0—-050"—‘0”
050>
L5

CONNECTOR

TEST CONNECTOR

(USED IN PLACE

FRONT VIEW

OF DISTRIBUTION

H3248 SINGLE LINE

PANEL)

TEST CONNECTOR

MKVB4-16556

(PLUGS INTO J4-J12 OR

)
W

N
b

END OF A BC22 CABLE

MKV84-0798

H3250

)

AUX CLK +

TX CLK DIFF &

AUX CLK =

meeit

TX CLK DIFF =

——a

TX DATA DIFF +

—

TX DATA DIFF =

—p

RX DATA DIFF -

RX CLK DIFF4 —
RX CLK DIFF =

RX DATA DIFF

—e

% |
3
a8

X
]

CDET

DSR

RTS

CTS

%
'

H3250

MKV84-0799

SIGNAL RATE INDICATION

SEND DATA +
SEND TIMING +

REQ TO SEND +

REQ DATA +

REQ TIMING +

CLEAR TO SEND +

LOCAL LOOP

SHIELD GROUND

[ = TY T -fimbmwssnsmca) =

H3251

TERMINAL TIMING +

ke G

TEST MODE

SIGNAL GROUND

Y
53

SIGNAL QUALITY

NEW SIGNAL

TERMINAL TIMING -

SELECT STANDBY

TERMINAL READY
RECEIVER READY
-

TERMINAL IN SERVICE

DATA MODE -

CLEAR
TO SEND -

STANDBY INDICATION
SEND COMMON

(ugngng LeeZev e300

k3
o

REQ TO SEND
-

REQ TIMING -

SEND TIMING
REQ DATA
-

RECEIVE COMMON

SEND DATA-

b wd
ok

INCOMING CALL
SIGNAL RATE SEL

REMOTE LOOP

e vk

TERMINAL READY +

RECEIVER READY +

sNeoNeNe[eh foeh LML gorh G451 LN bl

DATA MODE +

H3251

MEVB4-0799

4-9

NULL CLK +

REC CLK +
TX CLK +

NULL CLK REC CLK -

TX CLK -

TX DATA
R DATA
+
TX DATA
+

R DATA

RTS

CTS
REC RDY
TER RDY
DATA MODE

TX INT

REC INT
TX INT

REC INT

H3254

|
EE
o | SS
DI
N

.
K
N
11
.

__|op
A

N
|

FF
Mm

1
SIDE
H3254

\_/
MEVE4-0800

4-10

SEND COMMON

REC COMMON
IN SER
TER

—

INCOMING CALL

0 JooooOm LLT | oooood

H3255

TER RDY +

DATA MODE +

SEND DATA +
REC DATA +

SEND DATA REC DATA -

SEaooa: +

NULL CLK +

SEND TIMING +

REC TIMING +
NULL CLK —

SEND TIMING —

REC TIMING ~
RTS +

CTS +

REC RDY +

NEW SIGNAL

SIGNAL QUALITY
SEL SIGNAL RATE
SIGNAL RATE IND

SIDE 1

TH1

TH2

% SEC SEND DATA
* SEC REC DATA

* SEC RTS

* SEC CTS

it o

LOCAL LOOP

H3255

TEST MODE
SEL STAND BY

STAND BY IND
RTS —

CTS —
REC RDY —

DATA MODE -

TER RDY

'lmw

3 NOT REQUIRED FOR DMP11

MKV84-1274

4-11

H3259
SIGNAL FLOW

TRANS SIG ELMT TIMING

. ) vt

TRANS SIG ELMT TIMING

RCV SIG ELMT TIMING

Vwi

SIGNAL RATE SEL

|23

UNASSIGNED PIN

SECONDARY REQ TO SEND

SECONDARY TRANSMIT

SIGNAL QUALITY DETECTOR

”1

SPEED INDICATOR (212A)

SECONDARY RECEIVE

‘6

}

&.fi“'
“'”.flfl‘?o
L
o

TRANSMIT DATA

RECEIVE DATA

)

" i .

LOCAL LOOP

DATA SET READY

ul]

OUTLINE

|20

RING INDICATOR

REQUEST TO SEND

CLEAR TO SEND

TEST CONNECTOR

DATA TERMINAL READY

CARRIER

.
5

MKVB4-12786

TEST MODE

SIGN QUAL

MM o

SF/RL

AR oWi

SEND DATA

F o-

RX DATA

SEND DATA

SEND TIMING

|
|

AAO

‘

(RS422)

TERM TIMING

Lo
No

RX TIMING

R o-

TERM TIMING

W o-

s’
1

(RS422)

CLEARTO SEND

REQ TO SEND

RX RDY
INCOMING CALL

T o

e
o

X o

TERM RDY

DD o-

DATA MODE

Z o

DATA MODE RET

U 0

BB O

RS422
W6 o~} RS423

W6 o{")e

—I

W4 oo
me W2

W3 ol

o= =s W1

]
H3260

{LOCAL LOOP)

SEND TIM RET
RX TIM RET

TT o

W5
—

S8 o

TERM TIM RET

EE o

(RS422)
SEND DATA RET

RX DATA RET

KK o~

Wé

NOTE: 1. W1 & W2 IN

. W3-W6 oUT

} RS-423-A TEST
-423-

ESTING

2wy 32 OUT | Rs.422-A TESTING
W3-W8 IN

MKV84-1278

4-12

H3271

(:Nmumm"

H3271

TRANS 0 —-—Tz—“

'ze > REC 1

DTR O

CO
0

<—t

RI O

?“

Ri1

‘3

CO1

l
l

r—

;

DTR1

124 _ TRANS 1

REC 0 «——d122
NOTE

LINES2 & 3,4 & 5 AND 6 & 7 ARE
STAGGERED THE SAME WAY
MK-2648

4-13

H3272

H3272
TEST CONNECTOR

OUTLINE

RTS O

CTS 1

SEC XMIT O

SEC REC 1

LOCAL

LOOP O
TRANSMIT O

DSR
1

RECEIVE 1

DTR O

RING 1

CARRIER 1

LINEO
CTs O

RTS 1

SEC REC O

SEC XMIT 1

DSR O

LOCAL
LOOP 1

RECEIVE 0

TRANSMIT 1

RING O
Mo

>L!NE1 :

DTR 1

CARRIER O
NOTE: LINES2&3,4&5,6 & 7 ARE STAGGERED IN THE SAME WAY.

SIGNAL FLOW
MK-1824

vulojofvv

ssiolo]T
PP IO|O]RR

MMOIOINN

JO[O]

HH JO|O]JJY

EE JO|O)FF

cclolo]

A )

O-q —

=] || w—-

[

O‘

o4—

K ]

P —

C
A

——
P

* INDICATE CAVITIES USED TO
MOUNT STRAIN RELIEF

STRAIN RELIEF
BAK-2543

H3274

70-17029

MALE PIN B [=2

@ 70-17028-00 IS INSTALLED ONTO PINS B AND C
OF THE MIL188 I/0 CONNECTOR ON THE

vaLe pin ¢ [ {4

70-17028

VT100 XA OR XB

@ ALSO INSTALLED ONTO PINS B AND C
OF 70-16428 CABLE

FEMALE PIN B [m
70-17029-0-0 IS INSTALLED INTO PINS

B AND C OF THE BC20S CABLE

FEMALE PIN C W
MK-2674

4-15

H3276
JUMPERS

=
-

_1\__.

MKVB4-0780

H8568

MKVB4-0783

H8611

TX SERIAL OUT
RX SERIAL IN
TX SERIAL OUT

—

LINE

RX SERIAL IN

TX SERIAL OUT

)

—

LINE

RX SERIAL IN

zlc

TX SERIAL QUT
LINE

_RX SERIAL IN

TX SERIAL QUT

LINE

—

RX SERIAL IN

—

TX SERIAL OUT

—

=
o
[r—1

LINE

RX SERIAL IN
TX SERIAL OUT

LINE

RX SERIAL IN
PR

TX SERIAL OUT

,*‘

INDICATES CAVITIES ARE NOT USED

LINE

4-16

RX _SERIAL IN

(9= 02 9= OF 0= OE O~ 0F Oz 08 Om OF Qo O< O 0F

ANEEEEEEEEEEEEE.

DATA SET BUSY 00 mun-m”m

DATA SET BUSY O1

———

DATA SET BUSY 02
ASYN H

EIA XMIT DATA 00

——

EIA XMIT DATA 01

VWOV

nggzémn§<§:

DV11 BUSY 00

DV11 BUSY O1

e
e

ATITMO
]}

DV11 BUSY 02

- OV

DV11 BUSY 03

EIA XMIT DATA 02

EIA XMIT DATA 03

INDICATES CAVITIES ARE NOT USED

EIA RCV DATA 02
EIA RCV DATA 03

e
oy

5TM
F

e
o

L
3

-~
=

(929 0408 29392

EIA RCV DATA 01

213ZFERSENX<+43ZzrC
oo

ZXIMOD>

00 %
[xTelOl0JOI0I0I0I0I00 ele]ele]olelelo]0]e
B0000000000C8EEEaE0n

EIA RCV DATA 00

3
QS
OF OZ 0& 0T 0T0M
08 03 0F O ON O< X OF O<OCO-1 0» P20 VYZ OTP

DATA SET BUSY 03

OxQ OT YT OMOC POOWR>

H8612

MK-2545

4-17

M974

TTL DATA IN

LX)

]

U
]

ko]
L

UL
PIN 3

REC

SHIELD

3 SHIELD
WK 2643

4-18

ME-2831

12-12528

SHIELD

i
b3

el
i

3
.

[

—

sndk

TTL DATA IN
TTL DATA OUT

U?I

TTL DATA QUT

-fl(

TTL DATA IN

paary

TTL DATA QUT

TTL DATA W

U u L’ * U

TTL DATA OQUT

TTL DATA IN

TTL DATA OUT
TTL DATA IN

TTL DATA OUT

W
»
>
o

TTL DATA QUT
TTL DATA IN

TTL DATA IN

TTL DATA IN
TTL DATA OUT

TTL DATA OUT
TTL DATA IM

&
[ B

TTL DATA OUT

TTL DATA IN

TTL DATA OUT

. TTL DATA IN

TTL DATA IN

TTL DATA OUT

TTL DATA IN

PIN
TTL DATA OUT

l% l% U u U H

TTL DATA QUT

)

o 2
-

=72

29-24929-00

TX DATA (n)

RX DTA (n+1)

RST (n)

CTS (n+1), CARRIER (n+1)

DTR (n)

DSR (n+1)

LOCAL LOOP (n)

TEST MODE (n+1)

DATA RATE SELECT (n)

RING (n+1)

TX DATA (n+1)

RX DATA (n)

RTS (n+1)

CTS (n). CARRIER (n)

DTR (n+1)

DSR (n)

LOCAL LOOP (n+1)

TEST MODE (n)

DATA RATE SELECT (n+1)

RING (n)

-n

RONT VIEW)

(BACK VIEW)

(n) WHERE n EQUALS THE LINE NUMBER.
MKV84-0781

H3257/H3258

H3258

H3257

TERMINATOR

(FEMALE)

(MALE)
MK-2244

H8570

TERMINATOR (M)
MKV84-1277

4-19

CHAPTER 5

SPECIAL TEST PROGRAMS

5.1

INTRODUCTION

This section includes a brief description of the diagnostic packages that typically test intersystem communication links such as the Data Communications Link Test (DCLT) and the Interprocessor Test Program
(ITEP).

Both DCLT and ITEP contain special expanded command features which are device dependent (for
example, printing the base table under DMR /DCLT). Other variations in features and functionality (such
as the HELP files for each specific DCLT) are also device dependent.
5.2

DATA COMMUNICATIONS LINK TEST (DCLT)

DCLT programs provide Field Service personnel with a tool to verify communications links for many of

the options contained in this Minireference Manual. DCLT programs also provide the coverage necessary
to isolate faults in the following areas:

Communications interface program functionality

Communication modem

Communication cabling and installation, and

Physical link/network.

DCLT programs allow testing between nodes with different hardware interfaces implementing the same or
compatible protocol. The DCLT program can be exercised under normal maintenance loopback tests:

5.2.1

Internal TTL loopback

Hardwam loopbacks:

madulc test connectors, or

cable test connectors

Manual controlled local modem analog and digital loopback functions (full-duplex mode)

Programmable controlled local modem analog loopback (RS-449 only and full-duplex mode)

Programmable controlled remote modem digital loopback (full-duplex mode).
Hierarchy Prerequisites

Before using DCLT to test the communications link it is important to verify that the CPUs line clocks are
operational. In addition, it is important to verify that the devices at each end of the link have previously
been tested by device specific diagnostics and found to be in working order.
5-1

Prior to analyzing any data, the user should have a thorough understanding of the protocol formats
applicable to the system under test.
R
|

5.2.2 System Requirements
To run the DCLT program, the following minimum hardware/software is required:
e

PDP-11 or VAX-11 CPU

Minimum memory requiremments:

—~

28K words for PDP-11 systems

512 K bytes for VAX-11 systems

Any supported XXDP+ load media

A working line or real-time clock

Diagnostic supervisor

A communications device to test.

5.2.3 Program Structure
|
The DCLT program is written to be used with the diagnostic supervisor. Some communications options are

- supported by a DCLT program designed to test the communications link for that option. For each
individual program, hardware and/or software P (Parameters) Tables are available to establish certain
conditions. All DCLT programs use a command line interpreter (CLI) that may utilize any one of three
DCLT command types:

Run Commands - (detailed in Tables 5-1 and 5-2)

Message Commands - (detailed in Table 5-3)

Statistical/Utility Commands - (detailed in Table 5-4).

Any DCLT command may be followed by its associated switch and/or qualifier. In the event of an ‘illegal
command, the program will output an error message to the console.

Six sequential subroutines are normally peformed during the normal DCLT run command oper}ation:
®

Device Initialization

Mode Set-Up (set FLAG word)

Receive yBuffer QUE/START

Transmit Buffer Que/START

Data Comparison (only if data check has been enabled)

Program PASS Completion.

5-2

Along with the:se: six subroutines the DCLT program can also perform special routines which may be
device specific:

DCLT down-line load test (only if supported by the device being tested)

Talk/Listen Mode:
A—;

Talk/Listen mode is used for operator communication requiring line turnaround in half

duplex

‘Talk mode allows the user to type his own message of up to 72 characters

Listen mode allows the user to look for receive data and display up to 72 characters on the
console

If the first four characters of message are “EXIT”, the program will switch to the other
mode automatically at both ends of the link.

5-3

Table 5-1

RUN Command

Run Command

Function - Command name RUN (R) - used to execute the DCLT program. The run command
mandatory mode (M) type; it may use optional qualifiers.

Command Format:

R M = Run Mode

where:

RM= lMode Typel/ | Optional Qualifiers |
|

Check (CH); No Check (NOCH)
Status (S); No Status (NOS)
Echo (E); No Echo (NOE)

Modem (M); No Modem (NOM)
Pass (P)=#
Loopback (L) = type

See Table 5-2 for detailed descriptions.
MKV84-1322

Default
Qualifiers

Type

Description

Active(A)

Transmit one message from list; monitors
receiver for incoming data until list is empty. For full-duplex and local testing.

/NoEcho/NoLooping

Passive(P)

Monitors receiver for incoming messages;
then transmits a message from the list until
the list is empty. For half-duplex testing,
one node must be active; the other passive.

/NoLooping

Transmit(TR)

Transmit one message from the list; repeats
until list is empty.

/NoEcho/NoLooping
/NoCheck

Receive incoming messages; repeat, unless

/NoEcho/NoLooping

Prints a prompt TLK on the console
allowing operator to input up to 72 characters transmission. Receive node must be in
Listen mode. Program will switch to Listen
mode if first four characters are EXIT.

/NoEcho/NoLooping
/NoCheck

Receive(R)

checking is enabled. Compares receive data
to expect list data.

Talk(TA)

5-4

requires a

Table 5-1

RUN Command (Cont)

Default

Type

Description

Listen(L)

Downline(D)

Load

Qualifiers

Prints a prompt LIS> and monitors receiv-

/NoEcho/NoLooping

Issues Maintenance Oriented Protocol

/NoEcho/NoLooping

er for data. Message is printed on the console when it is received. If first four
received characters are EXIT, the program
switches to Talk mode.

(MOP) sequences for devices that support

/NoCheck

this feature.

Run Command Exanuples:
Format

Description

R M=A/S/CH/L=C/P=5

Program runs in Active mode, allows status printouts, does

data comparisons, loop data at cable (test connector
required), and does 5 complete passes before completing
test.

R M=A/S/M/L=1/P=2

Program runs in Active mode, allows status printouts, loops

R M=P/NOCH/S/NOE/NOM/
L=C/P=2

data internally, and makes 2 passes.

For half-duplex, one node must be active and the other
passive. Set the passive node first as shown in the example.

The active node can then be set up, as shown above.

NOTE
Command strings must be single line.

R M=A/S/CH/L=C/P=1

Program runs in active mode, allows status printouts, does

data comparisons, loops data at the cable (test connector
required), and makes continuous passes until a control C is
typed by the user.

If no entry is made for a certain qualifier function (such as NO CHECK qualifier in Example 3) in the
command strip, the default is the previously-entered qualifier for that function. In Example2, data
comparisons would be done because the CHECK function (as opposed to NOCHECK) was previously
established in Example 1. When that qualifier function is changed, it becomes the default entry for

subsequent command strings when no entry is made.

5-5

Table 5-2 DCLT Run Command Optinuai Qualifiers
Type

Description

Check(CH)

Enables byte by byte comparison of

Format

receive buffer against list buffer. If
CHECK is enabled, the fol-lowing
receive error messages are possible:
Data Comparison Error(CMD):

Data Comparison Error total
mismatches:
Data Comparison Late Error (CML).
No Check

(NOCH)
Status(S)

Disables data checking.

Enables printing of operator status
messages on console such as:

TXQ
TXC
RXQ
ERR
INI

Refer to Table 5-6 (DCLT Event
Log Messages)

MSC
CMP
CML
CMD
EOP

No status
(NOS)

Disables printing of operator status

Echo(E)

Used in passive mode only; forces transmit list to be the same as received data.

No Echo(NOE)

Disables Echo.

messages.

PASS(P=)

PASS=N, where:
N=Total number of passes
desired before returning to DCLT
prompt:

Enter —1=infinite loop until
CNTL C
Loopback Type

(L=)

Allows program selection of various
maintenance loopback test configura-

tions in active mode only.
4 Loopback Types:

L = Type, where N=

TTL Loopback within module

1 for INTERNAL

‘

Table 5-2

Type

DCLT Run Command Optional Qualifiers (Cont)

Description
~

Format

External cable test (Any external loop-

C for CABLE

Program selection of local loopback

L for LOCAL MODEM

Program selection of remote loopback
(digital loopback) in RS-449 modems.

R for REMOTE MODEM

back including test connector, manual
Modem loopback or remote system-tosystem loopback).

(analog loopback) in RS-449 modems.

Enables modem interrupt testing, but

Modem(M)

only on devices that support modem
transition interrupts.

Disables modem interrupt testing.

No Modem

(NOM)

Enables running DDCMP Protocol for

Protocol

devices which do not support DDCMP

in firmware.

Table 5-3

Message Commands

Function -

allows the user to assign, clear, or show transmit or expect (data comparison) messages
within each transmit or expect list buffer area. maximum buffer area for each is 512
bytes.

Message Command Types:

Clear Command (C)
Command Format:

Used to clear associated buffer area and preset the list with an

ITEP message.

CT = Clear Transmit List and

CE = Clear Expect List

Examples:

Simply enter C E or C T at the DCLT> prompt.
DCLT> C E

5-7

Table 5-3

Message Commands (Cont)

Message Commands

Set Command (SE)

Used to assign transmit or expect messages.

Command Format:

SE T for Set Transmit and
SE E for Set Expéct
or

SE E = T for Set Expect equal to Transmit
where:

SE T or
SE E = Message Type/Optional Qualifier

Message Type/Optional Qualifier

|
Name

Description

SIZE(S)
SXXX

XXX=MSG size from
1 to 512 Bytes

0-14 additional times
MKV84-1323

MSG

Default
Buffer
Length

Type

(Bytes)

Description

(Z)ZEROS
(O)ONES
(DIALT
(0)OALT
(COCCITT
(A)ALPHA

64
64
64
64
64
65

All zeros (000)
All ones (1111))
Alternating one/zero (101010)
Alternating zero/one (010101)
512 CCITT Bit Pattern (Random)
ALPHA /Numerics

(#$'“&‘()*EH+,—0123456789;:<=>?

@ABCDEFGHIUKLMNOPQRSTUVWXYZ/['NA —%
(DITEP

“Interprocessor Test Program(ITEP)” message I(DPI:)

(<177><177>/$A THE QUICK BROWN FOX JUMPED
OVER

THE LAZY DOG.<15><12><001><177><177><177><177>

MSG DATA

Operator typed data to include only

A-Z, 0-9, SPACES, TABS*

Delimited by quotes:
Example:“HELLO”

5-8

w“

o W\»@Q

Table 5-3

Message Commands (Cont)

Message Commamls

Example of Set Command:
Example:

Format

Description

SE T=I/S=50/C=4

Assigns 5 copies (original + 4 copies) of ITEP message (size = 50 bytes

each to the transmit buffer list (250 bytes now assigned).

SE E=Z/S=30/C=4

Assigns 5 copies (original + 4 copies) of all ZEROS. MSG size is 30

bytes.

Assigns 1 message, 64 bytes long.

SE T=A/S=64

A typical command string would be:

DCLT>(A)?CE

DCLT>(A)?CT

DCLT>(A)?’SE T=Z/S=30/C=2
DCLT>(A)?SE T=C/S=64/C=2
DCLT>(A)?SE T=A/S=128

DCLT>(A)?SE T=1/S=45/C=1
DCLT>(A)?SE E=Z/S=30/C=2
DCLT>(A)?SE E=C/S=64/C=2
DCLT>(A)?SE E=A/S=128

DCLT>(A)?SE E=1/S=45/C=1
or

DCLT>(A)?SE E=T

Clear Expect Buffer

Clear Transmit Buffer

Table 5-3

Message Commands (Cnm)

Message Commands
3.

Show Command (SH)

Used to print out the status of associated buffer area.

Command Format:

SH T to Show Transmit List and
SH E to Show Expect List

Examples:

DCLT><A>?SH T
MSG:TYPE=ZEROES/SIZE=30
MSG:TYPE=ZEROES/SIZE=30
MSG:TYPE=ZEROES/SIZE=30
MSG:TYPE=CCITT/SIZE=64
MSG:TYPE=CCITT/SIZE=64
MSG:TYPE=CCITT/SIZE=64
MSG:TYPE=ALPHA/SIZE=128
MSG:TYPE=ITEP/SIZE=45
MGS:TYPE=ITEM/SIZE=45
MODE=ACTIVE/PASS=00000
/STATUS/CHECK/NOECHO/NOMODEM

DCLT>(A)?’SH E
MSG:TYPE=ZEROES/SIZE=30
MSG:TYPE=ZEROES/SIZE=30
MSG:TYPE=ZEROES/SIZE=30
MSG:TYPE=CCITT/SIZE=64
MSG:TYPE=CCITT/SIZE=64
MSG:TYPE=CCITT/SIZE=64
MSG:TYPE=ALPHA /SIZE=128
MSG:TYPE=ITEP/SIZE=45
MGS:TYPE=ITEM/SIZE=45
MODE=ACTIVE/PASS=00000
/STATUS/CHECK/NOECHO/NOMODEM

5-10

Table 5-4

Statistical/Utility Commands

Command Functions:
Allows special utility routines to be executed. Four basic commands are available, listed as follows for both
PDP-11 and VAX-1] unless otherwise noted.

Command Types

Description

HELP(H or ?)

Used to print a summary of DCLT commands on the console.

PRINT (P)*

Enters a DCLT sub~lav¢l routine called REPORT (RPT>) where various com-

mands are available to print statistical data. Some commands are common to all
devices, others are device specific (see Table 5-5).
HELP OR ?

Prints HELP information for RPT>.

LOG

Prinis the DCLT event log.

BASE/FULL

Prints entire base table.

BASE/ERROR

Prints only error counters in base table.

BASE/OFFSET=NNN

Prints single location (NNN) in base
table.

EXIT

Returns to the previous level (DCLT>
or DR>/DS).

TRIBUTORY STATUS
SLOT NNN/SW

Prints tributary status slot data where
NNN is the decimal tributary address
and SW is one of the following switches:

ERROR

Only error slots are printed.

FULL

All tributary slots are printed.

OFFSET = NN

Only tributary status slot whose offset is
NN is printed.

GLOBAL STATUS/SW

Prints global status information. Switches are the same as for TSS.

*The PRINT command is also available on PDP-11s at the DR> level. Also, a similar command called
SUMMARY (SUM) is available on VAX-11s at the DS> level. SUM performs the same function as
PRINT, accessing the RPT> sub-level routine.

DUMP(D) PDP-11
ONLY

Prints contents of memory locations specified on
console from starting address (SSSSSS) up to ending address (EEEEEE).
Optional switch/B may be used to print in BYTE format.

EXIT(E)

Returns to previous program level.

5-11

Table 5-4

Statistical/Utility Commands (Cont)

Examples of Statistical Commands

DCLT> (A)?’H or (?) Prints HELP information for DCLT>.

COMMAND HELP FILE
DCLT CMDS:
CLEAR OR SHOW EXPECTLIST OR TRANSMITLIST
PRINT
DUMP START-END/B
EXIT
SET EXPECTMSG OR TRANSMITMSG=TYPE/SIZE=N OR /COPY=N
SET EXPECT=TRANSMIT
TYPE=ONES,ZEROES,1ALT,OALT,ITEP,CCITT,ALPHA
OR “OPR SPCD=A,-Z,SP,TAB,0-9, IN QUOTES”
RUN MODE=MTYP/LOOP=LTYP/CHECKS,STATUS,ECHO,PASS=N
MTYP=TRAN,REC,ACT,PAS, TAL,LIS,DOWN
LTYP=INT,CAB,LOC,REM
DCLT=>(A)?P
TYPE H OR ? FOR HELP
RPT>(A)? B/E

LOCATION CONTENTS DESCRIPTION
7373

004

NAKS-MSG NO BUFFERS CUMUL

17402

007

REPS RECD CUMUL

RPT>(A)?B/0=27
LOCATION
17417

CONTENTS
006

DESCRIPTION
STREAMING TIME OUT COUNT

RPT>(A)’H

DCLT REPORT CMDS:
LOG - PRINT DCLT EVENT LOG
EXIT - EXIT REPORT LEVEL
HELP - PRINT THIS MESSAGE
BASE/ERROR - PRINT ONLY ERRORS
BASE/FULL - PRINT ENTIRE TABLE
BASE/OFFSET=NNN - PRINT SINGLE LOCATION

The command list is
device dependent.
Example shown is for
DMC/DMR.

5-12

My,

Table 5-4

Statistical /Utility Commands (Cont)

STARTING ADDRESS

DCLT>(A)’D(DUMP)17420 - 17430
I__.I,._J
ENDING ADDRESS

MKV84-1324

This command is for PDP-11s only. For VAX-11
use SET BASE or EXAMINE commands.

DPV

DUPII

BASE/OFFSET=NNN (B/O=NNN)

BASE/FULL(B/F)

BASE/ERROR (B/E)

TRIBUTARY STATUS SLOT NNN/SW
(TSS NNN/SW)
GLOBAL STA

DMR

HELP(H or ?)

EXIT(E)

DMV

LOG(L)

DMP

DMC

RPT>COMMAND

Report Commands/Device Matrix

Table 5-5

TUS/SW (GSS/SW)

5-13

5.2.4 Event Log Overview
|
Significant events thatoccur during program execution are logged into the EVENT LOG.
The most recent
45 events can be printed by executing a PRINT command at the DCLT> prompt level.
For VAX-11 it is
also possible to obtain the error log at the DS> prompt level by typing SUMMARY (SUM).
Typical event
log messages are shown in Table 5-6.

Table 5-6

Type

DCLT Event Log Messages

Example Format

TXQ | | Time of Event |

| Name |

| Number of Bytes |

0:01:27 TRANSMIT MSG QUEUED

ADDR OF MSG=004312

MODEM STATUS: CTS

| First Byte Address ]

BYTE COUNT=12

DSR

DCD

RTS

SQD

1 |

| Modem Status |

TXC

Same format as TXQ, except for name change: Transmit Message Complete.

RXQ

Same as above, except for name change: Receive Space Queued.

RXC

Same as above, except for name change: Receive Message Complete.

CMP |

| Time of Event |

Name

0:0:02

DATA COMPARISON STARTED

ADDR OF MSG=004326 RX BYTES=512 COMPARE BYTES=512
|

]

| First Byte Address |
CML

Number of Bytes

Bytes Expected |

Same format as CMP, except for name change: Data Comparison Length Error

CMD | | Time of Event |

Name

0:14:44

DATA COMPARISON DATA ERROR

ADDR OF MSG=004604 BYTE COUNT=58 NO. OF CMP ERRS=50
|

| First Byte Address |

Number of Bytes

| Number of

MKV84-1325

5-14

Table 5-6
Example Format

ERR

Time of Event |

Type

DCLT Event Log Messages (Cont)

| Name
|

1:01:01

DEVICE ERROR

100100

]

| Register Contents |
Time of Event |

EOP

Name |

0:01:03
PASS=4

END OF PASS
ERRORS=0 NOBUFFS=0

| Pass Count | | Error Count|

rol Outs |
| Number of ContFER
set. *
INI

| with NO BUF

Time of Event |}

Name

}

00:00:00
DEVICE INT AND SETUP
MODE = ACTIVE/LOOP=CABLE/PASS=00001

l
|

/STATUS/CHECK/NOECHO/MODEM
|

Mode-Type of Loopback | | Run Parameters |
and pass count

MSC | | Time of Event |

0:00:00

- Old Status |

| Name

MODEM STATUS CHANGE

MODEM STATUS HARD ERROR

MODEM STATUS:

CHANGED TO:

MODEM STATUS:

CTS

DSR DCD

RTS

SQD

CTS

DSR

DCD

RTS

SQD

| New Status|
* The NOBUFFS function is for DMC/DMR only. This feature is device
dependent and varies.

5-15

MKV84-1326

5.2.5 Running PDP-11/DCLT
When the DCLT program is started, the diagnostic supervisor will prompt
the user for hardware information by typing:
|
|
CHANGE HW (L)?
The “L” in brackets indicates the type of response required, “L” indicates
that a logical answer (“Y”’for
yes or “N” for no) is needed. In this case, the user must respond with a
“Y” after a start command unless
the hardware information has been “preloaded” using the SETUP utility.
Next, the supervisor will
prompt:

#UNITS (D)?
The “D” indicates that a decimal response is needed. The DCLT program
will not use more than one unit
and therefore will not accept any response greater than “1”. Typical
PDP-11/DCLT procedures are
provided in Table 5-7.
This example is typical for DMC/DMR; however, P table questions are option-depe
ndent and may differ.
Refer to option specific section in Chapter 2 for details.

Table 5-7

Typical PDP-11/ DCLT Diagnostic Parametters

Question

Description

CHANGE HW(L)?

Enter Y

#UNITS(D)?

Enter 1

UNIT FULL DUPLEX OPERATION:(L)Y?

Enter <CR> for Full-Duplex; Enter NO fol-

lowed by <CR> if Half-Duplex. To use
default values, enter Control Z (AZ).
DEVICE CSR ADDRESS:(O) 1601707

INTERRUPT VECTOR ADDRESS:(O) 300?

Requires OCTAL response; input correct CSR
address followed by <CR>.
Enter <CR> if vector is 300. If different,

enter correct vector followed by <CR>.

INTERRUPT PRIORITY:(O) 5?

Enter <CR> for BRS. If different, enter correct value followed by <CR>.

DEVICE OPTION TYPE: (if applicable)

Input correct octal number corresponding to
the user’s application followed by CR

END OF DCLT P TABLE QUESTIONS - START DCLT RUN MODE

THIS IS DCLT.TYPE“H”OR“?’FOR DETAILS
MODE=ACTIVE/PASS00001
/NOSTATUS/CHECK/NOECHO/NOMODEM
DCLT>(A)?

)

Running VAX-11/DCLT

5.2.6

The VAX-11 Data communication Link Test (DCLT) Programs are level 2 programs that execute either
under VMS (on-line) or in standalone mode. The DCLT programs require the standard VAX-11 system
attaching for the device to be tested. Table 5-8 details typical VAX-11 DCLT program operation.
Hardware device parameters are required after the device is attached (refer to the Typical VAX-11 DCLT
Hardware parameters. Table 5-9). The event flags utilized by the DCLT program help to describe the
internal configuration of the hardware and/or special program functions. These event flags are dependent
on the specific device and are listed in a device specific DCLT table.
NOTE

The prompt DS> indicates a VAX-11 Diagnostic
Supervisor Command is required.

Table 5-8 Typical VAX-11 DCLT Program Operation
Example

Command Function

1.
2.

DS>ATT DW780 SBI DWO 3 4 or

ATTACH the UNIBUS interface

DS>ATT DW750 CMI DWO bus, or

(UBA or UBI) to the system.

DS>ATT DW730 HUB DWO

DS>LOAD EVDMC (Example shown is

Load appropriate DCLT program.
ATTACH the device to the

system.

DS>ATT DMC11 DMC/DMR)

NOTE

This command now enters the hardware parameter
information for the device (refer to the Table 5-9 for
Typical Hardware Parameters). When the various
hardware parameters are qualified, the program
returns to the supervisor level of operation and the
following steps must be followed:

5.
6.

SELECT the devices that have
been attached to the system. -

DS>SELECT ALL or
DS>SELECT DWO and

DS>SELECT XMO

SET the appropriate event

DS>SET EVENT 1

Now the program may be

DS>START

flags

started by the START command.

Table 5-9

Typical VAX-11 DCLT Hardware Parameters

Questions

Description

DEVICE LINK?

Link the option to the UNIBUS interface by entering the logical name

of the interface (this is, DWO0).
2.

DEVICE NAME?

Establish a logical device name (this is, XMO0). The logical name is
generally the same one used by the operating system and the actual

unit number (this is, 0-7 or A-Z).
3.

CSR?

Enter the device CSR address.

VECTOR?

Enter the device Vector address.

BR?

Enter the correct device priority level (normally BR 5).

.
£

NOTE
The command Line Interpreter (CLI) format for the
device also can be linked together on one line as
shown in the attached command for the UNIBUS
interface above.

5.2.7 Interfacing DCLT Node-to-ITEP Node
When DCLT is used to communicate with ITEP, both nodes must be in compatible modes as listed
in
Table 5-10.

Table 5-10

DCLT-to-ITEP Compatible Mode

ITEP Node

DCLT Node

ONE-WAY-OUT
ONE-WAY-IN
INTERNAL LOOP
EXTERNAL LOOP

RECEIVE OR LISTEN
TRANSMIT OR TALK
ACTIVE
ACTIVE OR PASSIVE

The following conditions also apply:
®

Be sure to set the Tx Buffer at both nodes to the same value

Do not send ITEP message 3 to the DCLT node if it is in the LISTEN mode

Be sure to set the ITEP node SWR 4=0.

MMM%

5.3

INTERPROCESSOR TEST PROGRAM (ITEP)

ITEP is a software tool to test the communications link between two devices. To run ITEP on any of the
supported devices, the ITEP Monitor DZITA must be loaded along with the correct ITEP overlay (device
specific).

ITEP features:

)

Communications between two devices over remote or local links

Interfaces with Merrimack turnaround system

Uses programmed or operator generated messages

Monitors transmitted and/or received messages with optional print capability

Operates in one of four basic modes:
Receive only
Transmit only

One Way In
One Way Out
Internal Loopback
External Loopback

Receive followed by Transmit
Transmit then idle Receive.

Table 5-11 lists each of the overlays currently available to support the options indicated. Table 5-12 details
the switch register options which select specific operational variations available with ITEP.
Table 5-11

ITEP Overlays

Program Designafian

Description

MAINDEC-11-DZITA
MAINDEC-11-DZDCO
MAINDEC-11-DZDHL
MAINDEC-11-DZDJD

ITEP Monitor
DCI11 Overlay
DH11 Overlay
DJ11 Overlay

MAINDEC-11-DZDLO
MAINDEC-11-DZDPO
MAINDEC-11-DZDQO
MAINDEC-11-DZDUO

DL11 Overlay
DP11 Overlay
DQI11 Overlay
DUI11 Overlay

MAINDEC-11-DZDVO
MAINDEC-11-DZDPF
MAINDEC-11-DZDZB
MAINDEC-11-DZDMO

DV11 Overlay
DUPI1 Overlay
DZ11 Overlay

MAINDEC-11-CZKMO

KMC11/DMCI11 L/U Overlay

DMC11/DDMRI11 Overlay

5-19

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5.3.1

SW paramters must be identical in both systems

[oad/Start receive system first

Enable modem auto answer (if available)

Load/Start transmit system.

Table 5-13

Typical Load/Parameter Input Procedure

Procedure/Parameter

Description

L ZITAD?

Load ITEP monitor

R XXXX?

Enter and run selected overlay where:
XXXX = overlay mnemonic
Example: DH11 = ZDHL

INTERFACE TYPE XXX?

Enter <CR> (except for DN11 or DH11), see program docu-

ment for details.

XXX = OPTION SELECTED

BUS ADDRESS - 176510?
VECTOR ADDRESS = 000300?

PRIORITY = 000200?

Enter <CR> for default or appropriate address followed by

<CR>

Enter <CR> for default or appropriate address followed by

<CR>

Enter <CR> for default or appropriate value followed by

<CR>

000200 = BR4 (DEFAULT)
000240 = BRS5
000300 = BR6

PARAMS #1 000000?
PARAMS #2 000000?
PARAMS #3 000000?

Enter <CR> for default value or enter
desired parameter value in each case,
followed by <CR>. Refer to Table 5-14 for parameter sum-

SET SWITCHES

Set up Switch Registers as desired (see Table 5-12) followed by

PLEASE MAKE CONNECTION

Confirm that link is established.

mary. Some parameters are not used on some options.

<CR>.

(DIAL NUMBER)

5-21

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5.4 LINK TESTING
The following figure provides a graphic overview of a general application flowchart for link testing.

Link Testing Flowchart (Sheet 1 of 4)

LOCAL
REMOTE

INTERFACE

Cm-wm'*:‘)“z
LOCAL
REMOTE

MODEM

A~ )

COMM

PANEL

INTERFACE

TELCO CE> %
o

—

LINE

—

POINT-TO-POINT LINK
1. INTERNAL (MAINTENANCE) LOOPBACK LEVEL

2. ON-BOARD LOOPBACK W/ PORT TEST CONNECTOR
3. CABLE LOOPBACK PRIOR TO COMM PANEL
4. COMM. PANEL LOOPBACK

5. CABLE LOOPBACK AT MODEM INPUT
6. ANALOG LOOPBACK MODE IN LOCAL MODEM
7. DIGITAL LOOPBACK MODE IN REMOTE MODEM
8. SYSTEM LOOPBACK FROM END NODE
ME-2803A

5-24

Link Testing Flowchart (Sheet 2 of 4)
COMM LINK TESTING FLOW CHART
(GENERAL APPLICATION)

IN INTERNAL

LOOPBACK

CORRECTIVE

PATH

TEST NODE

THIS

INSTALLATION
(BOTTOM-UP
APPROACH)

START

{

PATH

OR
INSTALLATION
TEST
;

TEST ENTIRE

| (LEVEL 1)

LINK IN

END

MODE

END

RUN
INTERFACE

PASS

COMPLETE

DIAGNS

SOFTWR

TEST LINK

TEST NODE

W/ ON-BOARD

CUSTOMER

IN EXTERNAL

(LEVEL 8)

SYS-TO-SYS

MODE

PASS
COMPLETED

(TOP-DOWN
APPROACH)

IN REMOTE

| (LEVEL

LOOPBACK

(LEVEL 7)

(DL) MODE

TEST CONNECTOR

END

END
PASS

LU.

RCVS &

PASS

DRVS ARE

COMPETE

COMPLETE

BAD

RUN

BOTTOM-UP

APPROACH

AT REMOTE

COMM STA.

[ ves
TEST LINK

TEST LINK

IN CABLE

IN LOCAL

(LEVEL 3)

LOOPBACK AT

LOOPBACK

COMM. PANEL

LOCAL

END

INTERFACE

PASS
COMPLETE

TO-COMM
PANEL

BAD

MODEM
OR TELCO
LINE
BAD

TEST LINK

TEST LINK
IN COMM,

BACK MODE

REMOTE

OK
?

CABLE

PANEL LOOP-

(LEVEL 6)

(AL) MODE

IN CABLE

(LEVEL 4)

LOOPBACK AT

| (LEVELY)

MODEM INPUT

MK-2B038B

5-25

Link Testing Flowchart (Sheet 3 of 4)

END‘

LOCAL
COMM

END

PASS

PANEL

PASS

COMPLETE

MISCONFIG.

O?K

TEST LINK
IN CABLE

LOOPBACK AT

MODEM

COMPLETE

‘

LOCAL

TEST LINK
IN COMM.

PANEL LOOP-

(LEVEL 5)

MODEM INPUT

HAS

PROBLEM

p—
.

(LEVEL 4)

BACK MODE

LOCAL

COMPLETE

MODEM

COMPLETE

CABLE
BAD

OK
?

TEST LINK

IN LOCAL

LOOPBACK

IN CABLE

(LEVEL 6)

(AL) MODE

LOOPBACK AT

COMM. PANEL

PASS

MODEM

LOCAL

Q?K

PROBLEM

COMPLETE

PASS

HAS

LOOPBACK

(DL) MODE

comm

PANEL

COMPLETE

MISCONFIG

O?K

TEST LINE

IN REMOTE

(LEVEL 3)

OR BAD

TEST NODE

IN EXTERNAL

| (LEVEL 7)

W/ON-BOARD

TEST CONNECTOR

)

(LEVEL 2)

—
MK-2803C

5-26

Link Testing Flowchart (Sheet 4 of 4)

END
PASS

END

PASS

COMPLETE

TEST ENTIRE
LINK IN
SYS-TO-SYS
MODE

|
|

| (LEVEL 8)

TEST NODE
IN INTERNAL
LOOPBACK

(LEVEL 1)

MODE

LU.

COMPLETE
OK

RCVS &

APPROACH
AT REMOTE
COMM

DRVS. ARE
BAD

STA.

BRING

RUN

INTERFACE
DIAGS

CUSTOMER
SOFTWR.

MK-2803D

5-27

CHAPTER 6

SPECIAL TOOLS AND EQUIPMENT

6.1

INTRODUCTION

This chapter provides brief descriptions of various special tools and test equipment available to aid in
troubleshooting and testing Digital Equipment Corporation Communications configurations. The following
are presently available and being used:

[DS Model #60 Interface Monitor/Breakout panel.

AstrocomTM, Minicheck Data Transmission Test Set.

6-1

6.2

BREAKOUT PANEL
The Model 60 Breakout Panel is a multipurpose tester that provides access to RS-232-C signals. It
features:

Switchpacks and patchable jumper pins (one for each line) allowing signal interruption and/or
rerouting;

12 LED’s to monitor certain key functions; and
Two additional LEDs to check voltage levels greater than +3.5 V at any line (jumper
selectable).

A
_

CURRENT INTERFACE FOR BELL 301300 M
o

NN
O SELECT

.1
Sl

G AN
o REREST

TR
8% | w

Ew
ol

GENG DATR

DRYR ST SEADY
T

B
et b

5 1=
o

e nuw

ote
DATE

Lo Bt

Mk e

Fabeie

g ]

el Do

=
-

EIA INTERFACE MOMITOR AND BREAKOUT PANEL

MKV84-1669

Model 60 Breakout Box

6-2

6.3

MINICHECK

The Minicheck tester generates four patterns, checks for errors, displays number of errors, and displays
the status of the RS-232-C interface signals.

TEST PATTERN SELECT:

DISPLAY: TWO DIGIT ERROR
COUNT, RD, CO. CTS +V

o SPACE--TRANSMITS CONSTANT
SPACE SIGNAL

& -V TEST

BATTERY INDICATOR

« RANDOM--TRANSMITS 511

« DECIMAL POINT = LOW BATTERY

CHARACTER RANDOM PATTERN

o MARK--TRANSMITS CONSTANT
MARK SIGNAL

e ALT--ALTERNATES MARK &

SPACE SIGNALS
RTS: ON = TX & RX

OFF = TERMINATE

DTR: ON = KEEP CONNECTION
OFF = TERMINATE

S5
’

ERUOR

MRE

|
;

SPEED SELECT:

« ASYNC1 = 300 b/s

« ASYNC 2 = 1200 b/s
« EXT = SYNC UP

DISPLAY RESET
« RESETS ERROR

TO 24 Kb/s

DISPLAY TO ZERO

TEST POINTS (12):

FORCE ERROR

TRANSMIT DATA (TD)
RECEIVE DATA (RD)
REQUEST TO SEND (RTS)

« FORCES 1 ERROR
PER BLOCK IN RANDOM
MODE

CLEAR TO SEND (CTS)
DATA SET READY (DSR)

« POWER ON/OFF.

GROUND (GND)
CARRIER ON (CO)

SERIAL CLOCK TRANSMIT (SCT)
SERIAL CLOCK RECEIVE (SCR)
DATA TERMINAL READY (DTR)
RING INDICATOR (R)
TEST (TEST)
MKV84-1668

Minicheck Tester

6-3

6.3.1
Operational Tests
There are three basic test configurations and one Minicheck self-test
I.

Testing one modem with one Minicheck

Testing two modems with one Minicheck

Testing two modems using two Minichecks

procedure, specified as follows:

Test Procedure
Step 1

Disconnect modem from operating device and connect Minicheck tester to

Step 2

Apply power to Minicheck and modem, and set Minicheck speed to the
same speed as the
modem. For test configuration 3, make sure that both Minicheck
tests are set to the
modem speed.

Step 3

Set RTS and DTR to the ON position. For test configuration 3 place
one tester RTS to
ON and the other to OFF. To test the opposite direction, reverse the
RTS settings and

modem.

repeat the test procedure.

Step 4

For test configuration 1, place modem in analog loop, if available. In
test configuration 2,
place the remote modem (one without tester) in REMOTE TEST. For
test 3, go to step S.

Step 5

Select the desired test pattern in test configuration 3, the test pattern
must be the same at
both testers.

6.3.2 Test Results
Configuration 1 and 2.
1.

CO and CTS indicators should be ON.

RD indicator should be:

ON for MARK pattern,
OFF for SPACE pattern,
Dimly lighted for ALT pattern,
Flickering for RANDOM pattern.
3.

Error count after initial synch should be stable.

Check status of interface leads by:
Using an Oscilliscope, or

Connecting the TEST lead to the desired interface lead. Results are
indicated in the +
TEST — area of the displays (plus sign lighted for MARK: minus lighted for
SPACE).

6-4

Configuration 3

Minicheck with RTS ON:

CO indicator OFF,

Error count free running unless SPACE pattern selected,

Check interface signal status (see test results, configuration 1 and 2, step 4).

Minicheck with RTS OFF:
o ®

CTS and RD indicators ON,

CTS indicator OFF,
CO indicator ON,
RD indicator should be:

1)
2)

3)
4)

6.3.3

ON for MARK pattern
OFF for SPACE pattern

Dimply lighted for ALT pattern
Flickering for RANDOM pattern.

Error count after initial sync should be stable.

Check interface signal status (see test results, configuration 1 and 2, step 4).

Minicheck Self-Test Procedure

.
2.

Connect test points RD to TD, DTR to CO and RTS to CTS.
Apply power to the tester and place RTS and DTR to the ON position.

Select desired test pattern.

Set speed-select to 1200 (ASYNC 2).

Test Results

Same as Configuration 1 and 2, steps 1 through 3.

CHAPTER 7

EIA/CCITT DATA

7.1

INTRODUCTION

This chapter provides a summary listing of each of the signal functions associated with each of the EIA
and/or CCITT standards which are supported by the communications devices contained in this manual.
The connector pin assignments (at the modem) for each signal are also included. Table 7-5 provides a cross
reference showing the relationship between each of the supported standards.

7-1

Table 7-1

RS-232-C Interface Pin/Signal Designations

Circuit

Direction

Function

1
2
3
4
5

AA
BA
BB
CA
CB

To Modem
From Modem
To Modem
From Modem

Protective Ground
Transmitted Data
Received Data
Request to Send
Clear to Send

6
7
8
9
10

CC
AB
CF
—
—

From Modem
(From Modem)
(From Modem)

Data Set Ready
Signal Ground
Data Carrier Detector
(Positive DC Test Voltage)
(Negative DC Test Voltage)

Unassigned
Secondary Carrier Detector

From Modem

12
13
14
15

—
SCF

From Modem

SCB
SBA
DB

From Modem
To Modem
From Modem

Secondary Clear to Send
Secondary Transmitted Data
Transmitter Clock (Internal)l 14

SBB

From Modem
From Modem

Secondary Received Data

18
19
20

SCA
CD

To Modem
To Modem
To Modem

Receiver Dibit Clock
Secondary Request to Send
Data Terminal Ready

From Modem
From Modem
To Modem
To Modem
To Modem

Signal Quality Detector
Ring Indicator
Data Rate Selector
External Transmitter Clock
Force Busy

21
22
23
24
25

CG
CE
CH/CI
DA
CN

Receiver Clock

CCITT Circuit
Equivalent

101
103

104
105
106

107

102
109
|

122
121

118

119
115

120
108.2
110
125
111/112
113

RS-232-C Voltage Standards
Measured at the Receiver Circuit:
Data:
—25V<LOGICAL / 1<—3V(MARK)
+25V>LOGICAL / 0>+3V(SPACE)

Control:
—25V<LOGICAL / 0<—3V(NEGATION)
+25V>LOGICAL / 1>+3V(ASSERTION)

www%

7-2

Table 7-2

RS-422-A/RS-423-A Interface Pin/Signal Designations
Circuit
Equivalents

RS-232

CCITT

112

Send Data (+)
Send Timing (+)

BA
DB

103
114

From Modem
To Modem
From Modem
From Modem
To Modem

Receive Date (+)
Request to Send (+)
Receive Timing (+)
Clear to Send (+)
Local Loop

BB
CA
DD
CB

104
105
115
106
141

DM
TR
RR
RL
IC

From Modem
To Modem
From Modem
To Modem
From Modem

Data Mode (+)
Terminal Ready (+)
Receiver Ready (+)
Remote Loop
Incoming Call

CC
CD
CF
CE

107
108.2
109
140
125

SF/SR

To Modem

111

17
18
19
20

TT
TM
SG
RC

To Modem
From Modem
To Modem
From Modem

SPARE

SD
ST
RD
RS

To Modem
From Modem
From Modem
To Modem

Send Data (—)
Send Timing (—)
Receive Data (—)
Request to Send (—)

26
27
28
29
30

RT
CS
IS
DM
TR

From Modem
From Modem
To Modem
From Modem
To Modem

Receive Timing (—)
Clear to Send (—)
Terminal in Service
Data Mode (—)
Termonal Ready (—)

31
32
33
34
35

RR
SS
SQ

From Modem
To Modem
From Modem

Receiver Ready (—)
Select Standby
Signal Quality

36
37

SB
SC

From Modem
To Modem

Standby Indication
Send Common

Direction

Function

From Modem

Signal Rate Indicator

SD
ST

To Modem
From Modem

6
7
8
9
10

RD
RS
RT
CS
LL

11
12
13
14
15

Circuit

SHIELD

SPARE

2
4
5

22
23
24
25

NS
TT

To Modem
To Modem

Protective Ground

Select Frequency

Signal Rate Select

Terminal Timing (+)
Test Mode
Signal Ground
Receive Common

New Signal
Terminal Timing (—)

126
113
142
102
102b

116
110

117
102a

Table 7-3

CCITT/V.35 Interface Pin/Signal Designations

Circuit
Equivalents

CCITT
Circuit

Direction

101

B
C
D

102

105
106

To Modem
From Modem

E
F

107
109

H
J

108/1
108/2
125

From Modem
From Modem
To Modem
To Modem
From Modem

R
T

104

From Modem

104

From Modem

Function

RS-232

RS-449

Request to Send
Ready for Sending

AB
CA
CB

RS
CS

Data Set Ready
RCYV Line Signal Det

CC
CF

DM
RR

Protective Ground

115

From Modem

115

From Modem

114

From Modem
From Modem

P
S

103
103

U
W

113
113

Signal Ground

Connect Data Set
Data Terminal Ready
Calling Indicator
Received Data A
Received Data B

Receive Timing A
Receive Timing B

RD
RD

RT
RT

To Modem
To Modem

Transmit Timing A
Transmit Timing B

Transmit Data A
Transmit Data B

ST
SD
SD

To Modem
To Modem

Terminal Timing A
Terminal Timing B

7-4

Table 7-4

RS-366 ACU Interface Pin/Signal Designations
ACU

Direction

Designation

Function

I
2
3
4
5

To ACU
From ACU
To ACU
From ACU

FGD
DPR
ACR
CRQ
PND

Frame Ground
Digit Present
Abandon Call, Retry
Call Request
Present Next Digit

From ACU

7
8
9
10

11
12
13
14
15

16
17
18
19
20
21
22
23
24
25

Power Thdicator

PWI

From ACU
From ACU

Signal Ground
Not Used
+ DC Test Voltage
— DC Test Voltage

From ACU
To ACU
To ACU

DSS
NBI
NB2

Not Used
Not Used
Data Set Status
Number Bit Weight 1
Number Bit Weight 2

To ACU
To ACU

NB4
NBS8

From ACU

DLO

Table 7-5

EIA Interchange
Circuit

SGD

Number Bit Weight 4
Number Bit Weight 8
Not Used
Not Used
Not Used
Not Used
Data Line Occupied
Not Used
Not Used
Not Used

EIA/CCITT Standards Equivalency

CCITT Interchange Circuit

Definition
Standard (DCE
to DTE) With
out Connector

Recommended
CCITT Interchange
Connector

CCITT V.28

CCITT V.24

ISO 2110

RS-449

CCITT V.10/X.26

CCITT V.24

ISO 4902

RS-422-A

RS-449

CCITT V.11/X.27

CCITT V.24

ISO 4902

N/A

CCITT V.35

CCITT V.24

ISO 2593

EIA Electrical
Characteristic
Standard

Definition
Standard (DCE
to DTE) with
Connector

CCITT
Electrical
Characteristic
Standard

RS-232-C

'RS-232-C

RS-423-A

7-5

CHAPTER 8

VENDOR MODEM PRODUCTS

8.1

INTRODUCTION

This chapter contains a summary of the operational characteristics of some of the more commonly used
modems and the option variations available with each of them.

Also included is the DIGITAL recommendation for configuring each of the options for optimum
performance.

Table 8-1
Device

Characteristic Summary for Selected Modems
Auto

Remote

Type

Speed

Answer

Dial

Testing

Line

Operation

103J)

0-300 b/s
(ASYNC)

Yes

With
801

Yes

Switched

Half-Duplex or
Full-Duplex

108

0-300 b/s
(ASYNC)

Series 2000
or 3002

Full-Duplex
(2 Wire)

113

0-300 b/s
(ASYNC)

“Yes

Yes

Switched

Half-Duplex or
Full-Duplex

0-300 b/s
(ASYNCQC)

No
~

2400 b/s
(SYNC)

Yes

With
801

113A

201C

202S

1200 b/s

NO CONDITIONING 1800
Bits/SC2
CONDITIONING

(2 Wire)

ACU

(2 Wire)

Yes

Manual
Originate

Full-Duplex
(2 Wire)

Yes

With

801
ACU

Switched or
3002 Private
Channel

ACU

Yes

Switched

Yes

(ASYNC)

8-1

Switched

Series 2000
or Private
Line Series
3000

Half-Duplex
(2 Wire)
Full-Duplex

(4 Wire)

HDX (2 Wire)

Table 8-1

Device
Type

Speed

Characteristic Summary for Selected Modems (Cont)

Auto
Answer
Dial

Remote
Testing

Line

Operation

202T

Same as
202S

Yes

2 or 4 Wire
Series 3000
Private Line

HDX (2 Wire)
FDX (4 Wire)

208A

4800 b/s
(SYNC)

Yes

4 Wire 3002

FDX (4 Wire)

4800 b/s
(SYNC)

Yes

208B

Private Line
With
801

Yes

Switched

HDX (2 Wire)

3002 with DI
Conditioning

FDX (4 Wire)

ACU
209A

1-9600 b/s
Channel, or
1-7200 b/s
and
1-2400 b/s
Channels

Yes

2-4800 b/s
Channels
or

4-2400 b/s
Channels
(SYNC)
212A

0-300 Bits/S
ASYNC or 1200
Bits/S CHAR
ASYNC or 1200
Bits/S Bit
SYNC

Yes

With
801
ACU

Yes

402C

0-600 Bits/S

Yes

With
801
ACU

Yes

Switched
2000 or 3002
Private Line

HDX (2 Wire)
or
FDX (4 Wire)

500A
DSU

2.4K, 4 8K
9.6K, 56K
SYNC

Yes

4 Wire DDS

FDX, HDX

501A
DSU

9.6K, 56K
SYNC

Yes

4 Wire DDS

FDX, HDX

510A
DSU

2.4K, 4.8K

Yes

4 Wire DDS
Multiport

FDX, HDX

8-2

FDX (2 Wire)

Table 8-1
Device

Characteristic Summary for Selected Modems (Cont)
Auto

Remote

Operation

Type

Speed

Answer

Dial

Testing

550A

56K SYNC

N/A

4 Wire DDS

ANALOG

S551A

56K SYNC

N/A

4 Wire DDS

ANALOG

CSuU

CSU

Modem Options

Table 8-2

DIGITAL

Recommendation

Modem

Option

Designation

103J

Receive Space

Yes

Send Space

Yes

Loss of Carrier

CC Indication

Early

CB and CF

Separate

CC Indication

Auto Answer

Yes

Failsafe State

Off

Tip/Ring

Ground

Common

\%
W

In
Out
In
Out
In

Disconnect

Indications

for Analog Loop

of CN Circuit

Make Busy

108

To Be Supplied

113B

Common Ground
CB/CF Indication

CN Control
Tip/Ring Force Busy
Data Terminal Control

X
Y
Z

of Disconnect

8-3

Table 8-2

Modem Options (Cont)

Modem

Option

Designation

DIGITAL
Recommendation

201C

Ground

Common

Transmitter Timing

Auto Calling

By ACU

As required

Auto-Answer

Under DTR control

Ring Indication

EIA RS-232 on pin 22

Line Interface

4 wire private (FDX)

Carrier Control

Switched, 7 ms delay

New Sync

Not used

Carrier Detector

Sensitivity
202S

VA"

Receive Data Squelch

~Internal
N

—24 dbm private wire

—44 dbm switched net
156 ms

Soft Carrier Turnoff

24 ms

Clear to Send Delay

180 ms

Fast Carrier
Detection

Out (23 ms)

Received Data Clamp

In (required)

Local Copy Primary
Channel

Out

Reverse Channel

ZC
ZD

As required
(In or out)

Local Copy
Reverse Channel

Out

Auto-Answer

Transmit Only

Out

CC Indicator In
Analog Loopback

Off

Ground

P
|

Common

8-4

Table 8-2

Designation

DIGITAL

Recommendation

801 ACU

As required

4 Wire Full-Duplex

Full-duplex

2 Wire Half-Duplex

See Reverse

Half-duplex only

Soft Carrier Turnoff
Clear to Send Delay
Fast Carrier
Detection

Receive Data Squelch

156 ms

recommended with
controller with full
modem with 2780
software package.

24 ms

Channel Below

180 ms

zZz

202T

Option

Out (23 ms)

Received Data Clamp

In (required)

Local Copy Primary

Out

Channel

Reverse Channel

In (as required)

ZC
ZK

Out
4 Wire operation

Local Copy
Reverse Channel

Out

Carrier Detector

Out

Continuous Carrier

Out

Compromise
Equalization

ZU
ZV

by installer)
Minimum (to match
channel characteristics)

Ground

Common

Reset

Alternate Voice

Maximum (determined

Out (as required)

w >

Modem

Modem Options (Cont)

8-5

Table 8-2

Modem Options (Cont)

Modem

Option

Designation

208A

Transmitter Timing

DIGITAL

Recommendation

Modem Provides
transmitter clock

Carrier Control

XB
XA

Request to Send

One Second
Holdover

209A

Continuous RTS (as

Switched RTS

Enabled (recommended
for use with continuous carrier, selected above)
Disabled (recommended
for use with multipoint master station)

New Sync

Not used

CC Condition in
Analog Loopback

DSR asserted in
Analog loopback

Alternate Voice

Data auxiliary set
installed
No data auxiliary set

Automatic Retrain

Must be installed

Compromise

Must be disabled

Equalizer

Transmitter Timing

Internal

Auto Call

As required

CC Condition in
Analog Loopback

CC on when analog
loopback button is
pressed

Auto Answer

Yes

Transmitter Timing

Internal

Provided

Carrier Control

required)

208B

Continuous carrier
(as required)
Switched carrier

P
|

Switched
o

Table 8-2

Modem

Option

Modem Options (Cont)

Designation

DIGITAL

Recommendation

Request to Send

Switched

Elastic Store

Out

Slaved Transmitter

Out

Data Set Ready (CC)

CC On

Control

Timing

Condition in AL Mode
(Form Use in Test 4)

AA not connected to

Grounding

212

Tip/Ring Make Busy

Out

CC Indication

CN Circuit

Out

Transmitter Timing

Internal

1200 Baud Operation

ASYNC /Start-Stop

Character Length

10 Bit

Receiver Respond

Loss of Carrier

Out

Receive Space

CB and CF

Separate

Send Space

Auto-Answer

Answer Mode

Off

Analog Loop

Digital Loop

Disconnect

Indications

Disconnect

Indication

8-7

Table 8-2

Modem Options (Cont)
Designation

DIGITAL
Recommendation

—

Speed Mode

Dual

)

Interface Speed
Indication

Signal Ground to
Frame Connect

Modem

Option

801-C AUTO CALLING UNIT

TYPE: DUAL FREQUENCY (TOUCH TONE) OR
DIAL PULSE
LINE: VOICE GRADE SWITCHED
CONDITIONING: ANY
SPEED: DIALS AT UP TO 10 DIGITS/SECOND
INTERFACE: RS366
Table 8-3

Option

Call Termination

801-C ACU Options

Designation

Zor A

DIGITAL

Recommendation

After DSS via CRQ or

G or ZD

After DSS via data set

ACR Timer

Stop timer when DSS sets

DSS Transfer

Answer tone detection or at
‘EON’ code

Answer Detection

W
X
S
T

Detect end of answer tone
Detect beginning of answer tone
Detect 2025 tone
Detect 2225 tone

Ground Start

A%
Y

In
Out

Data Set Answer
Detection

Without ‘EON’

Circuit

2 wire

DLO Lead

4 wire loop start

4 wire ground start

/M
ZL

801 only control
801 -and dataset control

8-8

|
—

CHAPTER 9
DATA COMMUNICATIONS

TROUBLESHOOTING

DATA COMMUNICATIONS TESTING WITH “DCLT” A COOKBOOK APPROACH
The typical Wide Area Network configuration is shown below. This may also be a Short Haul Network
when the systems are connected together via integral modem devices (DMR11, DMP11, DMV11), in
which case the distribution panels will be connected via coax cable rather than modems. Modem eliminators (and modem splitters for multipoint) are also commonly used interconnecting devices.

The Data Communications Link Test (DCLT) is a high level diagnostic and is not intended to diagnose a
specific failing module, DCLT will allow diagnosis of a specific component in the network (Comm
interface, cable, distribution panel or modem). For example; DCLT will not isolate which of the two
modules of a DMR/C/P11 is bad, but it will indicate that the option is bad. Module swap or run the repair
level diagnostics to determine which FRU is the failure.
Some tests (digital loopback and the link test) will require a person at both ends of the link and
coordination between them regarding DCLT run parameters/data and test sequences.
The following is a cookbook approach to diagnosing networks using DCLT.

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SYSTEM PREPARATION FOR TESTING

In the PDP11 environment DCLT is a standalone Diagnostic Supervisor based diagnostic, and thus
requires shut-down of the customer’s operating system. Run the appropriate PDP11 DCLT diagnostic and
answer the questions regarding: device address, vector, BR level and mode of operation. Once this is
complete, the operation will be under the DCLT> prompt.

In the VAX/VMS environment, DCLT is a Level 2 diagnostic and can run online. In most cases the
problem communications device will be running under DECnet. This means the device is allocated to
DEChnet and not available to the Diagnostic Supervisor for testing. The problem device must be deallocated from DECnet. This will shut down the customer’s communications link. In the multipoint environment
this could effect many systems (not all of which may have a problem). Make sure the customer is aware of
your intentions and the ramifications. The following procedure can be used to deallocate the defice from
DEChnet:

$ MCR NCP

NCP> SHOW KNOWN CIRCUITS
NCP> SET CIRCUIT XXX-N STATE OFF

NCP> SHOW KNOWN LINES

|
NCP> SET LINE XXX-N STATE OFF
NCP> CLEAR CIRCUIT XXX-N ALL
NCP> CLEAR LINE XXX-N ALL
NCP> EXIT

'This will show all the CIRCUITS,

Iselect the appropriate one.

'This will show all the LINES,

Iselect the appropriate one.

'The device is now deallocated

'from DECnet and the Diagnostic
'Supervisor/DCLT can be run.

WHERE: XXX =

DEVICE TO BE TESTED (DMC -A DMRI11 is also called DMC, DMP, DMF)

N =

DEVICE NUMBER TO BE TESTED. In the multipoint environment there will
generally be several circuits present, one for each tributary. These will be in the
form of XXX-N,Z (where N = DEVICE NUMBER TO BE TESTED and Z =
TRIBUTARY CIRCUIT NUMBER).
NOTE

In the Multipoint environment where the DMP11 is
used as the Control Station there can be several
circuits assigned to it (DMP-N,Z), one for each
tributary. All of the circuits must be set OFF and
CLEARED.

The appropriate VAX Diagnostic Supervisor should be run, the necessary ATTACH commands answered,
and EVENT FLAGS set for the communications device (and mode) to be tested. Use HELP files as
necessary. SELECT the device to be tested and RUN the appropriate DCLT diagnostic for that device.
Once started, operation will be under the DCLT> prompt.

The following commands will restore the operation for the device under DECnet VMS:
$ MCR NCP

NCP> SET CIRCUIT XXX-N ALL

'Repeat this for all circuits

NCP> SET LINE XXX-N ALL

'Repeat this for all lines that

'that were cleared.
'were cleared.

NCP> EXIT
$

9-3

POINT-TO-POINT NETWORK PROBLEM ISOLATION
A BOTTOM UP APPROACH
|
The following diagrams indicate the level of network function being tested and any necessary loopback
connectors or test buttons that need to be used. The DCLT command string
given, will execute the

required test.

For DOWNLINE LOAD testing insure that all module switch and jumper settings (and M9312
where
applicable) are correct. There are several TECH TIPS that address this area as well as the option
User’s
Guides.

NOTE
The following test sequences should be performed on
each system until the problem area is located.

In the DCLT command strings the /PASS= can be
given any desired value. A value of —1 loops forever).

The following tests require full-duplex mode of operation.

INTERNAL LOOPBACK

SYSTEM | ~ev o __{ PANEL
COMM

DISTRIBUTION

MODEM

DCLT> R M=A/L=|/CH/PASS=10
(INCLUDE THE /PROTOCOL (/P) SWITCH FOR THE DUP11 AND DPV11)
MKV84-1252

MODULE “EIA” LOOPBACK

| SYSTEM

DEVICE |

comm |

PANEL

DISTRIBUTION

l ODEM
MODI

(INSTALL MODULE LOOPBACK CONNECTOR)

DCLT> R M=A/L=C/CH/PASS=10

(INCLUDE THE /PROTOCOL (/P) SWITCH FOR THE DUP11 AND DPV11)
MKV84-1253

9-4

ANEL LOOPBACK

| SYSTEM | coMM
DEVICE |

DISTRIBUTION ‘

PANEL

AOD

,MOQEM

DCLT> R M=A/L=C/CH/PASS=10

(INCLUDE THE /PROTOCOL (/P) SWITCH FOR DUP11 AND DPV11)
(INSTALL CABLE TEST CONNECTOR)
ON DISTRIBUTION PANEL, FOR

INTEGRAL MODEM (COAX CABLES) PUT
PANEL IN “HDX" OR DEPRESS TEST
BUTTON.)
MKV84-1254

CABLE LOOPBACK

COMM

SYSTEM | hevice

IDISTRIBUTION

PANEL

DCLT> R M=A/L=C/CH/PASS=10

(INCLUDE THE /PROTOCOL (/P) SWITCH FOR THE DUP11 AND DPV11)
(CONNECT THE APPROPRIATE CABLE LOOPBACK CONNECTOR
TO THE END OF THE CABLE. FOR COAX CABLE LINKS,

CONNECT THE TWO REMOTE ENDS TOGETHER, PROVIDED THAT
THE MAX CABLE LENGTH IS NOT EXCEEDED)
MKV84-1255

9-5

ANALOG LOOPBACK

cverer,
SYSTEM
|| COMM
“=0

PANEL

DISTRIBUTION

_
}—-—- MODEM
f——»

DCLT> R M=A/L=C/CH=PASS=10
(INCLUDE THE /PROTOCOL (/P) SWITCH FOR THE DUP11 AND DPV11)
(THIS TEST IS NOT APPLICABLE TO COAX CABLE LINKS.
PLACE MODEM INTO “ANALOG LOOPBACK" MODE, BE
SURE THE MODEM ASSERTS “DATA SET READY" WHEN
IN THIS MODE.)
MKV84-1256

DIGITAL LOOPBACK

MUST BE A

sysTem | COMM

pevice

DISTRIBUTION

FULL DUPLEX-LINK

PANEL

| voem |

DCLT> R M=A/L=C/CH/PASS=10

(INCLUDE THE /PROTOCOL (/P) SWITCH FOR THE DUP11 AND DPV11)
(THIS TEST IS NOT APPLICABLE TO COAX CABLE LINK,
THE MODEM LINK “MUST” BE FULL DUPLEX FOR THIS TEST.
PLACE THE REMOTE MODEM INTO “DIGITAL LOOPBACK"

MODE.)
MKV84-1257

NOTE
Up to this point, DCLT has been run in the FULL
DUPLEX (FDX) mode. The next two tests will
allow communication between two systems in a manner similar to their normal customer application.
Thus, it may be REQUIRED that DCLT be reset to
run in the HALF DUPLEX (HDX) mode, if that is
the actual physical communication link mode of
operation. On a PDP/LSI-11 this will require a
complete restart of DCLT. On VAX systems
EVENT FLAG #1 must be changed.

9-6

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01=SSVd/HJ/v=N 4 <110d

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9-7

MULTIPOINT NETWORK PROBLEM ISOLATION
"
Isolation of MULTIPOINT problems can be very difficult. Begin from a NETWORK wide picture.
Are
ALL the tributaries down? If YES, then it would likely be a problem at the Control Station
system. It
could also be due to any one of the tributaries hogging the network (asserting constant carrier). The latter
problem will require a check at each system to see if its modem is asserting carrier, or by reconnecting
coax cables to bypass individual systems. If only one tributary is down then the problem is likely at that
particular system. If several tributaries are down then the interconnecting medium may be suspect.
In all
cases the communications link medium may be suspect. In all cases the communications link
medium
(modems, telephone system, coax cables) should be suspected as a potential problem until proven
otherwise. See chapter 6 of the DMPI1 Synchronous Controller Technical Manual for a multipoint
troubleshooting flow chart.

If the problem has been isolated to an individual system, that system is investigated as though it were an
individual node in a point-to-point network. Taken as such, the tests described in the previous
section
(Point-To-Point Network Problem Isolation) can be used to isolate the problem area. The INTERNAL
LOOPBACK through the ANALOG LOOPBACK tests are the valid ones to run. It would also be valid
to
run the LINK TEST in point-to-point mode between the Control Station and one of the tributaries.
The following describes the DCLT commands needed to run a multipoint link test. This will check out the
integrity of the network. If the individual systems functioned when tested as described above, then running
the DCLT multipoint link test can help show problems related to the modems and telephone system
or
long runs of coax cable. This type of testing will require someone be present at all the systems to run
DCLT and coordinate the test parameters and results. The person at the Control Station must
coordinate/assign ADDRESS for the tributaries and provide them to the people who will be running DCLT
on
those systems. It may be convenient to use the same tributary addresses the customer has assigned.

If not already done, follow the procedure outlined in the System Preparation For Testing section. Answer
the DCLT initialization questions which will be a multipoint network. The particular system is or is
not the
Control Station, as appropriate.
DCLT MULTIPOINT UNIQUE COMMAND SUMMARY
Command

Description

TRIB EST=x,y,z (T E=)

Establish list of tributary address to be tested (where x, y, Z are
the tributary address numbers).

TRIB SHOW (T S)

Show list of Established tributaries.

TRIB KILL=x (T K=)

Delete an address from the list of tributaries to be tested
(where x is the tributary address to be deleted.
i

Once DCLT has been initialized to the multipoint Control Station or Tributary mode, execute the
following commands as appropriate:

CONTROL STATION COMMAND SEQUENCE
DCLT> TRIB SHOW

DCLT> TRIB EST=x,y,z

'No tributaries should be established,
"f so kill them.
'Establish all tributaries to be tested
tat RUN time.

TRIBUTARY STATION(S) COMMAND SEQUENCE

'No tributaries should be established,

DCLT> TRIB SHO

if so kill them.

'Establish ONLY the single address of

DCLT> TRIB EST=x

'this tributary.

The RUN command to be executed on all systems after the TRIB EST commands have been executed.
DCLT> R M=A/L=C/CH/PASS=10

The /PASS= switch can be given any desired number (—1 is continous). Use the /PROTOCOL switch for
the DUPI11 and DPV11.

ADDITIONAL DCLT FUNCTIONALITY

The following is not a complete list of all available DCLT commands. Those previously shown and those
which follow are the most commonly used. Refer to the individual diagnostic listings for more complete
DCLT command descriptions and examples.

SIZE AND TYPE COMMANDS

MESSAGE
(ITEP type).
The default DCLT message size is 58 bytes long and is the QUICK BROWN FOX message
of 512
maximum
a
be
can
length
message
The
changed.
be
can
type
and
(length)
size
message
the
Both

bytes long. The message types are summarized below.
Default

Length

Description

ZEROS (Z)

ALL ZEROS (000000000 .........ccooeveeeeenens creernreneanne )

ONES (0)

e .)
s
ALL ONES (11TT1TT1TT coiiiiie

1ALT (1)

ALTERNATING ONE/ZERO (101010101010101..)

OALT (0)

ALTERNATING ZERO/ONE (010101010101010..)

CCITT (©)

512 CCITT RANDOM BIT PATTERN

ALPHA (A)

ALL THE ALPHA/NUMERIC CHARACTERS

ITEP (I)

QUICK BROWN FOX.....ccccovvennene. reeeneesreeeereesaeseans MESSAGE

Type

and/or telephone
The ZEROS and ONES message types are useful to detect problems when modems
messages ar¢
systems are sensitive to data patterns and as a result loose sync. The ALPHA and ITEP
patterns.
followed
easily
are
these
as
bytes,
characters/
dropped
for
look
to
scope
data
a
using
useful when
finding
in
help
a
be
can
message
larger
a
ve
send/recei
to
as
so
Also using the maximum buffer size (512)
use of a 512 byte
problems. When trying to troubleshoot the DECnet DAP CRC error problems, the
buffer and use of the /CHECK (/CH) switch (described below) is necessary. Expect to see DATA
COMPARISON errors as a symtom.

9-9

To change the message size and type use the following commands:

Command

Description

SHOW T

SHOW the current message buffer characteristics for the Transmit
(T) and
Expected (E) SHOW E buffers. The Expected buffer is the message
the DCLT

expects to receive.

CLEAR T
CLEAR E

CLEAR will reset the contents to the TRANSMIT (T)
and EXPECTED (E) message buffers to default condition (58
byte ITEP
message).

SET T=m/S=1
SET E=m/S=1

SET will define the contents of the Transmit (T)
and Expected (E) message buffers. Where M is the message type
as decribed
above, and L is the message length (from 1 to 512).

SETE=T

SET the Expected (E) buffer equal to the Transmit (T) buffer.
NOTE
The first time a SET command is given after a
CLEAR command or when DCLT is first run, the
new message type and size will OVERWRITE the

default message. SET commands given thereafter
will add the new message into the buffer along with
the existing one(s).

It is recommended that the Expected buffer and the Transmit buffer
message type and size always be
equal to each other in all systems under test, especially when doing
link tests and multipoint. When
executing any type of loopback test (internal, cable, etc.) both message buffers
must be the same. Buffers
made up of several messages of the same or different type and size do not
provide greater testing ability.
After a Clear T or a Clear E the default condition of the buffers is
the 58 byte ITEP message.
RUN MODE COMMAND SWITCHES

Switch

Description

/CHECK (/CH)

Enables a byte-for-byte comparison for the actual received data
against the
Expected list.

/NOCHECK

Disables received data comparison.

/STATUS (/S)

Prints a status message which indicates the current DCLT operation
while the
RUN command string is executing. Use of this function slows the activity
on the
link being tested. If this switch is added to the RUN command strings used
in the
troubleshooting examples in previous sections a typical error free status
message
is:

(/NOCH)

INI RXQ TXQ TXC CMP EOP (repeated until pass count = 0).
Where:

INI -

DEVICE INITIALIZATION (only occurs once)
"

9-10

"y,

RXQ -

INITIALIZE RECEIVE DATA BUFFER

TXQ -

INITIALIZE TRANSMIT DATA BUFFER

TXC -

TRANSMIT DATA BUFFER COMPLETELY SENT

CMP-

ACTUAL RECEIVED DATA COMPARED AGAINST

EOP -

END OF PASS

EXPECTED DATA

/NOSTATUS
(NOS)

Disasbles status messages.

/MODEM (/M)

Prints modem signal change interrupt messages.

/NOMODEM

Stopps printing modem signal change interrupt

(/NOM)

messages.

/LOOP=x

Selects the type of loopback method to be used.

(/L=x)

Where X can be:
I - INTERNAL

C - CABLE (or another system running DCLT)
/PROTOCOL

Use only for those devices not supporting (/P) DDCMP protocol in microcode
(DUP11, DPV11). This switch causes DCLT to simulate DDCMP protocol in
software. When using the DMF32, DDCMP protocol is used by default and can
NOT be disabled. Because of the enhanced error reporting/logging of DDCMP it
should be used in all cases.

/NOPROTOCOL
(/NOP)
/DOWNLINE
Line (/D)

Disables the use of DDCMP protocol only for those

devices that do not support it in microcode (DUP11, DPVI11).
Will cause a downline load of a program that will

print the QUICK BROWN FOX ....... message on the remote systems terminals.
Refer to the various TECH TIPS and the device Users Guides for the special
device and boot rom setups necessary for downline loading.

PRINTING THE ERROR COUNTERS (DDCMP ERROR COUNTERS)

DCLT records the DDCMP protocol error counters. This information can be very useful while
troubleshooting. Because DDCMP provides automatic retry and recovery from errors on the communications physical link (modems, telephone system, and coax cables) many problems will be transparent.
However, by looking at the DDCMP ERROR COUNTERS after what may appear to be an error free run
of DCLT, problems on the physical link (modems, telephone system, coax cables) may show up. Generally
a coax cable link will be error free. While modem/telephone based system links can vary dramatically in
error rate, especially on dial-up links. The overall effect of large numbers of DDCMP level errors is
reduced network throughput.

Type the following to get a printout of the DDCMP counters.
DCLT> PRINT

1Give the PRINT command to DCLT.

9-11

DO YOU WANT DDCMP ERROR SUMMARY
[(NO), YES]
'Answer YES to get the DDCMP
lerror summary.
A DCLT EVENT SUMMARY oprintout can also be set.
This information is not useful for general
troubleshooting. Use CTRL C to get out of the EVENT SUMMAR
Y printout if desired.

DATA COMMUNICATIONS TROULBESHOOTING USING
DEChet
DECnet has some very powerful troubleshooting features
and capabilities. DECnet can be used online to
isolate problems regardless of the operating system. In many
cases the communications link can be tested
while the customer is using DECnet, and possibly even using
the very same link to be tested. Troubleshooting online with DECnet uses the actual application software
to verify link operation. Online troubleshooting with DECnet is more accurate than off line diagnostics.
Another advantage is the user will only have to
know how to use a single program and set of commands
to test any of the DECnet supported devices,
regardless of whether they are asynchronous, synchronous, Ethernet,
point to point, or multipoint.
DECnet is a high level tool, and does not have the ability
to provide fault isolation to the FRU. DEChnet
can isolate failing components in the network (interface
, cables, distribution panel, modems, software
installation, etc.).
Detailed information on all DECnet features, commands
and error messages will not be presented here.
Only those commonly used for troubleshooting are presented
. For more detailed information refer to the
DECnet System Manager’s Guide for the appropriate

operating system.

The DECnet prompt is NCP>, the Network Control Program.

DECnet DEVICE NAMING CONVENTIONS

DECnet CIRCUIT AND LINE DEVICES

Mnemonic

Description

DL11-C,E and DL-11-W Single line asynchronous interfaces

DLV

DLVI1I1E Single line asynchronous interface for Q-BUS Systems

DMC

DMCI11, DMRI11 Synchronous interprocessor link interfaces

DMF

DMF32 Synchronous line port

DMP

DMPI11 Synchronous interprocessor link interface

DMV

DMV 11 Synchronous interprocessor link interface for Q-BUS
Systems

DUP

DUPI1 Synchronous line interface

DZ11 Asynchronous multi-line multiplexer interface

UNA

DEUNA ETHERNET communications link interface

9-12

LINE IDENTIFIER CONVENTIONS
Line identification tal ces on one of the following formats:
DEV-c or DEV-c-u
WHERE:

DEV C

—_—

device mnemonic as described above.

a decimal number (0, 1, 2, etc.) designating the devices hardware
controller.

decimal unit or line number (0, 1, 2, etc.) to be used if the device is a
multi-line controller (DZ11 for example).

EXAMPLES:

DMC-0, DMF-2, DMP-1, UNA-0

CIRCUIT IDENTIFIER CONVENTIONS

CIRCUIT identification takes on one of the following formats:
DEV-c, DEV-c-u, DEV-c.t or DEV-c-u.t
WHERE:

DEV C

—

device mnemonic as described above.

a decimal number (0, 1, 2, etc.) that designates the hardware
controller

a decimal unit or CIRCUIT number (0, 1, 2, etc.) that is used with
multi-line controllers (DZ11 for example)

a decimal number (0, 1, 2, etc.) that identifies an individual tributary
on a multipoint circuit (do not confuse this with the tributary
address) (DMC-1, DMV-0, DMP-0.1, DMV-1.1, UNA-0 for
example)

NOTE

Throughout the rest of this document DEV-c will be
used in examples of DECnet command strings. In
actual use, substitute an identifier as required.

EXECUTOR, CIRCUIT, LINE STATES AND CHARACTERISTICS

It is important to know the state and characteristics for the DECnet link being tested. This information is
useful even if not using DECnet. It will be useful for other diagnostics such as DCLT or NIE. The
following is not a complete list and description of all the EXECUTOR, CIRCUIT and LINE PARAMEbe
TERS that may be used under DECnet. The following is a list of those parameters which will generally
comfor
Guide
Manager’s
System
DECnet
the
to
Refer
process.
ing/testing
troubleshoot
the
to
useful
plete information.

NOTE

Get the customer’s approval before using DECnet
for troubleshooting and testing the network.

9-13

Get the following information before beginning troubleshooting and testing with
Information Needed

WHY

LINE

to be sure DECnet knows it exists

STATE

DEChnet.

DUPLEX

to see if the link is possibly active with a customer application

to determine what kind of test to run and any necessary changes that
may need to be made before testing is possible (half duplex lines must

PROTOCOL

be changed to full duplex to do loopback testing).

to see what type and running mode the link is (multipoint, point to
point, ETHERNET).

if this is a multipoint control station testing may effect a LARGE
number of other systems, be sure the customer is aware.
if this is a multipoint tributary change the mode to point to point
before doing loopback testing.

CIRCUIT

STATE

to be sure DECnet knows the CIRCUIT exists

to determine the current operational state to determine if customer
activity exists.
ADJACENT
NODE

to get node addresses/names through which to loop data during
testing.

EXECUTOR NODE

get node address/name for testing use.

STATE

to determine if DECnet is enabled, and thus testing can be done.

CIRCUIT LINE STATES AND SUBSTATES
State

Substate

Description

OFF

NONE

the CIRCUIT/LINE exists, but is not enabled for use.

ONE

the CIRCUIT/LINE exists and is available for normal use.

SYNCHRONIZING

the CIRCUIT/LINE is in the hardware initialization cycle.

STARTING

the CIRCUIT/LINE is in the protocol startup sequence.

REFLECTING

the CIRCUIT/LINE is in use for passive loopback testing.

AUTOLOADING

a downline load has been requested by a remote system.

a manual downline load of a remote system has been started by the

host system.

SERVICE NONE

CIRCUIT/LINE is reserved for service functions.

9-14

LINE CHARACTERISTICS
Meaning

Parameter

CONTROLLER
NORMAL
LOOPBACK

DUPLEX

device is in the normal DECnet operational mode

the device internal hardware loopback is enabled (valid for devices,

DMC, DMF, UNA)

HALF

the device is in the HALF DUPLEX (HDX) mode

FULL

the device is in the FULL DUPLEX (FDX) mode

PROTOCOL

DDCMP CONTROL
DDCMP DMC

DDCMP POINT

this is a multipoint control station

this is a point to point line emulating a version of DDCMP compat-

able with DMCl1s

this is a point to point DDCMP link

DMP TRIBUTARY this is a tributary station in a multipoint network

LAPB |

this is an X.25 level 2 protocol link

ETHERNET

this link is a connection to an ETHERNET

HARDWARE ADRS

valid for ETHERNET devices only - ETHERNET hardware
device physical address

CIRCUIT CHARACTERISTICS
Parameter

Descriptim

STATE

ON - CIRCUIT available for normal use or service operations
SERVICE - CIRCUIT available only for service operations
OFF - CIRCUIT is disabled for all operation

TRIBUTARY

ADJACENT NODE

adrs — hardware address of a tributary station (must the if LINE
PROTOCOL is point to point)

node # (name) - address and name of system on other end of the

link (all nodes are adjacent on an ETHERNET)

9-15

EXECUTOR CHARACTERISTICS

Parameter

Description

NODE

node # (name) — address and name of node

STATE

ON - DECnet enabled for normal use

OFF - DECnet disabled for all usage
PHYSICAL ADDRESS

NCP

~—~,

adrs — valid only when ETHERNET link(s) in use - this is the
ETHERNET address of this system.

COMMANDS

Show Command String

Shows

NCP> SHOW KNOWN LINES

'status of all lines known to DECnet

NCP> SHOW LINE DEV-c

'status of only one particular line

NCP> SHOW KNOWN LINE

Icharacteristics of all lines known to
'DEChnet

NCP> SHOW KNOWN LINE DEV-c

!characteristics of only one
'particular line

NCP> SHOW KNOWN
CIRCUITS

'status of all CIRCUITS known to
'DEChnet

NCP> SHOW CIRCUIT DEV-c

Istatus of only one particular line

CHARACTERISTICS

NCP> SHOW KNOWN CIRCUIT
CHARACTERISTICS

Icharacteristics of all circuits known

'to DECnet

NCP> SHOW CIRCUIT DEV-c
CHARACTERISTICS

'characteristics of only one
'particular CIRCUIT

NCP> SHOW EXECUTOR

'show status of the EXECUTOR node

STATUS

DECnet ERROR LOGGING
DECnet has an error log (ERROR COUNTERS) which records information concerning

errors, process errors, etc. Proper use and understanding of the DECnet

DDCMP level

o~
"

error logging system is crucial to

effective troubleshooting and testing. The counters log information in four (4) categories;
CIRCUIT,
LINE, EXECUTOR, and NODE. the CIRCUIT and LINE counters are the generaly
the most useful in
troubleshooting. The error counters should be zeroed before each test is executed
and examined at the
completion of each test. Examination of the error counters should provide an indication
of the cause of the
problem and its location. The following describes the various error counters that
are most useful, and lists
those command strings used to examine and zero the counters. For a complete description
of the error

counters refer to the DECnet System Manager’s Guide.

,N’w

9-16

p—

CIRCUIT COUNTERS
CIRCUIT DOWN

Indicates the number of circuit failures. These can be caused by
a hardware problem, communications equipment problem
(modem, telephone system, etc) or the CIRCUIT or LINE being
manually shut down by the operator.

INITIALIZATION
FAILURE

Indicates the number of times the circuit failed to initialize with
the remote systems routing software (a SHOW CIRCUIT DEV-c
would indicate it as ON if successful and ON - STARTING if it
had not initialized yet).

BYTES RECEIVED

A count of the number of bytes of data received by the local

node over the circuit.

BYTES SENT

The number of bytes of data sent by the local node over the

DATA ERRORS
OUTBOUND **

A count of the number of errors that normally result from the
data sent by the local node being received in error at the remote
node. This counter is a count of all the DDCMP NAK messages

circuit.

received from the remote node.

DATA ERRORS
INBOUND **

A count of the number of errors that result from data being sent
from the remote node and being received in error at the local
node. This counter is a count of DDCMP NAK messages sent by
the local node to the remote node. This counter may include the
following specific qualifiers if they contribute the errors:
NAKSs sent, header block check error

NAKSs sent, data field block check error
LOCAL BUFFER ERROR

This counter indicates the number of local buffer errors that normally result when the local buffer is too small for the received
message or no buffer is available to store the message.

REMOTE BUFFER ERROR

This counter indicates the number of times the remote node buffer is too small or unavailable for the message sent by the local
node.

LOCAL REPLY
TIMEOUTS **

This is a count of the number of timeouts at the local node due
to a failure of the communication link while data is being sent, or
timeout of the local node’s reply timer. This is a count of
DDCMP REP messages sent by the local node.

REMOTE REPLY TIMEOUTS**

This counter indicates the number of timeouts that normally
result from a loss of communications and the remote node having
data to send or the remote nodes reply timer expiring. This is a
count of DDCMP REP messages received from the remote
node.

9-17

SELECTION
INTERVALS ELAPSED

SELECTION TIMEOUTS

This counter is valid only for half duplex (HDX) and multipoint
links. This is a count of the number of times a multipoint station
is selected or the number of times an HDX link has been turned
around.

This counter indicates the number of selection timeouts that normally result from:
Loss of communication with a remote node

Data errors to or from that remote node

Inappropriate value for the select timer
Use the SELECTION INTERVALS ELAPSED counter as a
statistical base when evaluating this counter.

NOTE
These errors generally indicate a problem on the

communications medium (coax cables, modems, telephone lines, etc.). Note if the errors occur in both
directions or just one. On multipoint links all associated circuit counters must be examined to isolate the
problem. If multipoint link is via a telephone network it would be useful to have access to a telephone
circuit map to isolate various locations.

LINE COUNTERS

REMOTE PROCESS ERRORS

This counter records the number of DDCMP R errors that
occurred at the remote system and resulted in a DDCMP error
message (NAKS for header or data CRC errors) received at the
local node. Selection Address Errors and Streaming tributary are
also included.

LOCAL PROCESS
ERRORS

This is a count of the number of DDCMP errors that have
occured at the local system and have resulted in a DDCMP error
message sent to the remote system.

BLOCKS SENT,
INITIALLY DEFERRED

For ETHERNET links only. This is the total number of times
that a frame was deferred -on its first transmission attempt.

BLOCKS SENT,
MULTIPLE COLLISIONS

For ETHERNET links only. A count of the number of times a
frame was successfully transmitted on the third or later attempt
after normal collisions on the previous attempts.

BLOCKS SENT,
SINGLE COLLISIONS

For ETHERNET links only. A count of the number of times a

message was successfully transmitted on the second attempt after

a normal collision on the first attempt.

COLLISION DETECT
CHECK FAILURE

For ETHERNET links only. Indicates the approximate number
of times that a collision detect was not sensed after a
transmission.

9-18

Indicates the number of times the hardware lost a frame because

DATA OVERRUN

it was unable to keep up with the data rate.

SYSTEM BUFFER
UNAVAILABLE

Indicates the number of times that no system buffer was availa-

ble for an incoming message.

Command Strings

Description

NCP> ZERO KNOWN CIRCUIT
COUNTERS

1Zeroes (clears) all the CIRCUIT
counters known to DEChnet.

NCP> ZERO CIR DEV-c
COUNTERS

1Zeroes (clears) the CIRCUIT counters
'for DEV-c only.

NCP> ZERO KNOWN LINE
COUNTERS

1Zeroes (clears) all the LINE counters
'known to DECnet.

NCP> ZERO LINE DEV-c

1Zeroes (clears) the LINE counters for

NCP> SHOW KNOWN CIRCUIT

IShows the CIRCUIT counters for all

NCP> SHOW CIR DEV-c

IShows the circuit counters for DEV-c

NCP> SHOW KNOWN LINE

IShows the counters for all LINES

NCP> SHOW LINE DEV-c

IShows the LINE counters for DEV-c

COUNTERS

'DEV-c only

Icircuits known to DECnet.
'only.

'known to DEChnet.
'only.

CHANGING CIRCUIT AND LINE MODES OF OPERATION

Sometimes it is necessary to change the mode (DUPLEX, PROTOCOL, CONTROLLER) of operation of
the line and circuit. If the line is in Half Duplex (HDX) mode and loopback testing is desired, (internal,
cable, modem analog loop) the mode must be changed to Full Duplex (FDX). The operator can not do a
modem digital loop on an HDX link. If the line and circuits are in the Multipoint Tributary mode
(DDCMP TRIBUTARY) and loopback is desired, change the mode of the line and circuit to point to point
(DDCMP POINT). CONTROLLER LOOPBACK mode (device internal loopback) is valid ONLY for
device type: DMC, DMV, DMP, DMF, UNA.

The following command strings may be used to make necessary changes, and then return the system to
normal conditions.

NOTE

Ensure that the “DECnet Permanent Data Base”
contains all the correct operating parameters that
the customer needs for his application to function
properly! If it does not, then do not to make any
changes without consent.

9-19

To change the Line Mode to Full-Duplex, type the following: (does not apply to device type UNA)

'Turn LINE DEV-c off

NCP> SET LINE DEV-c

STATE OFF
NCP> SET LINE DEV-c
DUPLEX FULL STATE ON

'Set the LINE to full duplex and

NCP> SHOW LINE DEV-c
CHARACTERISTICS

'Verify that full duplex is set by
'looking at the LINE characteristics

'turn it back on

To change line mode to full duplex, type the following: (RSX DEChnet only)

NCP> SET LINE DEV-c STATE OFF
NCP> SET CIRC DEV-¢c STATE OFF
NCP> CLEAR LINE DEC-c ALL
NCP> SET LINE DEV-c DUPLEX FULL
To return to Half-Duplex mode, type the following:

NCP> SET LINE DEV-c

STATE OFF
NCP> SET LINE DEV-c DUPLEX
HALF STATE ON
NCP> SHOW LINE DEV-c
CHARACTERISTICS

"Turn LINE DEV-c off
'Restore the LINE to half duplex and
'turn it back on.
'Verify that the LINE is set to half
'duplex.

To change the protocol from Multipoint to Point-to-Point type the following: (Not possible for RSX)

NCP> SET CIR DEV-c.t
STATE OFF

'Set the multipoint CIRCUITS of OFF.
'"If this is a multipoint control
'station then repeat this command as
'necessaay for all the CIRCUITS
'(tributaries) for DEV-c.

NCP> CLEAR CIR DEV-c.t ALL

'Clears out the circuit parameters.
'If this is a multipoint control
'station then repeat this command as
'necessary for all the circuits
'(tributaries) for DEV-c. Be sure to
'keep track of which circuits (the “t”
'numbers) are cleared so they can
later be restored.

NCP> SET LINE DEV-c STATE

OFF
NCP> SET LINE DEV-c
PROTOCOL DDCMP POINT STATE
ON

"Turn the LINE off.

'Change the LINE mode to point to
'point and turn the LINE back on. If
'this is an HDX LINE and loopback
'tests are desired then it can also be
'changed to FDX as well at this time.
T
.

9-20

'Use the following command string
linstead: NCP> SET LINE DEV-c DUPLEX
'FULL PROTOCOL DDCMP POINT STATE ON

NCP> SET CIRCUIT TRIBUTARY

'Create a point to point circuit.

NCP> SHOW LINE DEV-c
CHARACTERISTICS

'Verify that the correct duplex and
Iprotocol are set.

NCP> SHOW CIRCUIT DEV-c

'Verify that the TRIBUTARY address

1 COST 1 STATE ON

CHARACTERISTICS

lis “1”

To set protocol back to Point-to-Point, type the following:
NCP> SET LINE DEV-c

'Turn the line off.

NCP> SET CIRCUIT DEV-c

'Turn the circuit off..

NCP> CLEAR CIRCUIT DEV-c

'Clear out the old circuit parameters.

STATE OFF

ALL

NCP> CLEAR LINE DEV-c ALL

'Clear out the old line parameters.

NCP> SET LINE DEV-c ALL

'Restore the original line parameters.

NCP> SET CIRCUIT DEV-c.t
ALL

'Restore the original circuit
'parameters. If this is a multipoint

'control station, then repeat this
'command as necessary to restore all
'the circuits (tributaries) that were
'initially cleared in the above
'procedure.

To put the line device into “Controller Loopback”, type the following: (Valid only for device types DMC,
DMF, DMP, and UNA) (If RSX must be version 4 or higher).
NCP> SET LINE DEV-c

"Turn the LINE off.

NCP> SET LINE DEV-c
CONTROLLER LOOPBACK

'Enable CONTROLLER LOOPBACK mode and
'turn the line back on. Note that if

STATE OFF

STATE ON

'the line is not FDX then it will have
'to be made so at this time as well.
'Use the following command instead:

NCP> SET LINE DEV-c DUPLEX FULL CONTROLLER LOOPBACK STATE ON

NCP> SHOW LINE DEV-c

CHARACTERISTICS

'Verify that the LINE is in CONTROLLER
'LOOPBACK.

9-21

To return to normal operation, type the following:

NCP> SET LINE DEV-c

"Turn the line off.

NCP> SET LINE DEV-c
CONTROLLER NORMAL
STATE ON

'Return device to normal operation and
'turn the LINE back on. Note that if
'the line was originally HDX then it
'will have to be returned to that mode
'as well at this time. Use the
'following command instead:

NCP>
SET
LINE
DEV-c
DUPLEX
CONTROLLER NORMAL STATE ON
NCP> SHWO LINE DEV-c

HALF

'Verify that the line is in
'CONTROLLER NORMAL.

CHARACTERISTICS

CREATING A PSEUDO NODE
A PSEUDO node is a logical representation of a system, not a physical system. The PSEUDO

necessary tool for loopback operations (controller internal, cable, modem analog/digital loop,

node is a

etc). When

testing a system in this manner it is no longer connected to another system (node). By creating
a PSEUDO
node on the system that is in the loopback mode, the operator now has another logical system
(node) to
which to send and receive data. To create a PSEDUO node type the following:

NCP> SET NODE name
CIRCUIT DEV-

'Creates a PSEUDO node called Name on
the designated CIRCUIT Name can be what ever is
desired, such as TEST NCP> SET NODE TEST CIRCUIT DEV-c.

NCP> SHO CIRCUIT DEV-¢c

This will show the status for CIRCUIT DEV-c and the
PSEUDO node name should show up under the Loopback
Name column.

To delete a PSEUDO node, type the following:

NCP> CLEAR NODE name ALL

'Clears out the PSEUDO node called
'name.

DECnet TEST COMMANDS
DECnet testing (provided the LINE and CIRCUIT modes are correct) consists of using the various forms
of the LOOP command. The following outlines the more commonly used forms of the LOOP command
and provide some examples. Refer to the DECnet System Manager’s Guide for complete information.
FORMAT

[ CIRCUIT CIRCUIT-ID
LOOP

| EXECUTOR

LINE LINE-ID

NODE NODE-ID

COUNT

m?éESD

WITH

ZEROS

LENGTH

MKV84-1260

9-22

WHERE

circuit-id, line-id

As described in the “DECNET DEVICE NAMING

CONVENTIONS” section.

COUNT

Specifies the number of blocks to be sent (from 1 to 65,535).

LENGTH

Specifies the length (in bytes) of the block to be sent. This

WIDTH

Specifies one of three types of binary information to be sent;

If the parameter is omitted only one (1) block is sent.

parameter must be less than 50 for a device type of DMC. If
this parameter is omitted, a block length of 128 bytes is used.

MIXED - alternating ones and zeros
ONES - all ones (1)
ZEROS - all zeros (0)
If omitted, a combination of ones and zeros (MIXED) is sent.
EXAMPLE COMMANDS

NCP>

LOOP EXECUTOR COUNT 10
"Tests the local DECnet software for
'10 passes.

NCP> LOOP NODE name COUNT 5
LENGTH 50 WITH ONES
NCP> LOOP CIRCUIT DEV-c

'Loops 5, 50 byte, all ones messages

'through node name.
'"Loops the default message across the
'CIRCUIT through a loopback device
'(another node, test connector, modem
'in analog loop, etc.)

DECnet TESTING PROCEDURES
The following outlines a bottom up approach to testing a DECnet communications problem. Each test is
standalone and does not rely on any previous or following tests. Thus, the operator may begin anywhere
appropriate to the problem and fall back or proceed forward as necessary. The examples shown use the
default test message conditions, refer to the DECnet TEST COMMANDS section to see how to alter the
default message. The tests are a list of procedures which will make use of the information and command
examples provided in previous sections. In some cases the actual DECnet (NCP) command will be shown.
If a failure occurs while testing, take the appropriate corrective maintenance action based on where the
failure occurs.

Examine the error counters after testing. They should generally be zero. If the communication medium is
via modems or the telephone network is dial up lines, some errors should be expected. The operator should
consider the number of bytes sent/received against the number of errors logged and determine if there is a
problem with the telephone line and/or modem. Bear in mind that on dial up lines the number of error
conditions will vary each time the connection is made.

9-23

Test the local DECnet software. No communications hardware is tested here.

DECNET SOFTWARE TEST

| comm

DISTRIBUTION

| DECNET DEVICE

PANEL

TEST PATH

NCP> LOOP EXECUTOR
MKV84-1261

Test the communications hardware interface (device). This is a test of the device up to point just before
the interface external receivers and drivers.

DEVICE TEST

|
| comm
DECNET
| pevice

I DISTRIBUTION
PANEL

TEST PATH

MKV84-1262

Set this line to controller loopback. Insure that is also full duplex.

Zero the error counters for this circuit.

Show status for this circuit. The State should be ON and the Adjacent Node column should
indicate the name of this node.

Examine the error counters for this circuit. They should be zero. If this passes, the device is
operational.

Create a PSEUDO node for this circuit.

Use the name selected for the PSEUDO node:

NCP> Loop Node name
7.

Examine the error counters for this circuit. They should still be zero. Repeate steps 6 — 7 if

necessary.

9-24

Return the line to its normal operating mode. See step #1.

Clear out the PSEUDO node that was created.

The following procedure tests the EIA receivers and drivers, distribution panel, I/O cable and local
modem.

SYSTEM LOOPBACK TEST

DECNET comm |

DEVICE |

fl COAX CABLE LOOPBACK

DISTRIBUTION
PANEL

CABLE TEST CONNECTOR

MODEM IN ANALOG LOOPBACK

TEST PATH

(BE SURE IT ASSERTS “DSR")

] REMOTE MODEM IN DIGITAL LOOPBACK
. (ONLY VALID FOR FULL DUPLEX)

MKV84-1263

Ensure the line is in full duplex mode.

Install the appropriate test connector (or depress the loopback/test switch) on the distribution

panel.

Zero the error counters for this CIRCUIT.

Show status for this circuit. The State should be ON, and the adjacent node column should

Examine the error counters for this circuit. They should be zero.

Create a PSEUDO node for this circuit.

Use the Name selected for the PSEUDO node:

indicate the Name of this node.

NCP> Loop Node name

Examine the error counters for this circuit. They should still be zero.

Proceed to the next stage of loopback as appropriate:
a.

Loop the coax cable back on itself.

Install the cable loopback/test connector on the end of the cable that plugs into the
modem.

9-25

Repeat steps #7 and #8. If testing a coax cable link or a modem eliminator proceed to the next
test. If testing modems then continue with the next step.
Set the local modem to analog loopback mode. Insure that it still asserts DSR.
Repeat steps #7 and #8. If the modem link is full duplex then proceed. If not go to the next test
procedure.
Set the remote modem to digital loopback mode. The local modem should be in its normal
mode.
Execute the process in steps #7 and #8.
15.

Clear the PSEUDO node that was created.

The following test procedure checks the DECnet to DECnet communications path between two systems.
The diagram shows a point to point system, but this test is still applicable for:
-

A multipoint control station to a multipoint tributary.

—

A multipoint tributary to another multipoint tributary.

Any two nodes on a ETHERNET.

Show status for this CIRCUIT TO INSURE THAT THE LINK IS OPERATIONAL BETWEEN
THE TWO NODES (STATE = NO).
ZERO the error counters.

NCP> LOOP NODE name

'name is the name or node address of
'the adjacent node.

Examine the error counters, they should be zero.

9-26

YT L-¥BANN

13NOJ3d

HLVd J0v8d001

WNIQ3W

SNOILVYIINNIWINOD

1anvd | 3013

9-27

DH11 INSTALLATION

DH11 OPTION

DH11 General Description

The DH11

is a 16 line asynchronous multiplexer that interfaces the PDP-11 UNIBUS to up to 16 serial

lines, each operating with individual parameters.
DH11 Features

Program selectable speeds up to 9600 b/s;
Programmable character lengths, stop bits, and parity;
Half- or full-duplex;

Full modem control; and

EIA RS-232-C, and/or 20 mA operation.
DH11 Reference Documentation

Refer to following documents if the level of content in this section is insufficient:
QOMA DHII Asynchronous 16-Line Multiplexer Technical Manual - EK-DHQMA-TM
DM 11-BB Modem Control User’s Manual - EK-DM11B-OP
DH11 Engineering Prints - B-D-DH11-O-N.

DHI1-1

DH11 INSTALLATION

QMA DH11 Components List

Table DH-1

Option/Parts List

QMA Components List

Description

Factory Installed Options
(See Note 1)
DH11-AP/DP

Field Upgrade Options
(See Note 2)

DHI11-M

RS-232-C Interface

1 - G727
1 - H8611
1 - M796
1 - M920
1 - M4540

Grant Continuity Card
BergTM Test Connector
UNIBUS Master Control Module
Internal Bus Connector
Crystal Clock Module

1 - M5906

Priority Sel. and EIA Conv. Module
Modem Control Module

1 - M7147
1 - M7277
I - M7278

Current Address and Address Sel.

1 - M7279

FIFO Buffer Module (Silo)
Multiple UART Modules
Line Parameter Control Module

Registers and Byte Control Module

2 - M7280
1 - M7288
1 - M7289

System Control and Receiver Scan Mod

1 - M7807

EIA Level Convert Module
Interrupt Control Modules
Resistance Network
9-Slot Wired Backplane Assembly
Power Harness

2 - M7821
1 - 1318784
1 - 7009180
1 - 7009561
DHI11-N

20 mA Interface

Sames as DH11-M without
M7147 and M7807

NOTE
Factory installed options may only be obtained

when the system is being originally configured.

Upgrade options require a base option and cabinet kit.

DH11-2

DH11 INSTALLATION

Table DH-2

DH11 Cabinet Kit Contents

NVAAT
AT AT AT T TS
5555558

c‘?

CONTENTS

%945’ ey AL @%9 )

YLV

BC08S-07

LTLTLTR

BCO8SH10

BCO8S-15

BCO8R-15

H315

HNERERE

H317-B

1]1]1

1] 1

H861

NEREEEREREREE

H3007

2212

H9544-SJ

21212

1.
MKV84-1306

Table DH-3

QMA DHI11 Power Requirements/UNIBUS Loading

Voltage Rating

Maximum

Minimum

Backplane

UNIBUS

Option

Volts

Amps

Voltage

Pin No.

DHII-M

+50

10.8*

15.25

+5.00

C9A2
A7BI
C9B2

13 AC

DHII-N

+5.0
+15.0
—15.00

8.600
100
.340

+5.25
+15.75
—15.75

+5.00
+14.75
—14.75

C9A2
A7BI
C9B2

2 DC
13 AC

+15.0
—15.0

400
.645

+15.75
—15.75

+14.75
—14.75

* Add 0.2A if last option on UNIBUS (UNIBUS terminator consumes 0.2 A)

DHI11-3

3 DC

DH11 INSTALLATION

Table DH-4

Power/UNIBUS Loading

Voltage

Option

DHII-AAABAC

Without DM11-BB
With DM11-BB

Rating
(Approximate

Maximum

Minimum

Backplane

+5 Vdc@8.4 A*

+5.25

+5.0

C9A2

Values)

+5 Vdc@11.2 A*
-15 Vdc@240 MA

Voltage

+5.25
—15.75

Voltage

+5.0
—14.75

Pin No.

C9A2
C9B2

UNIBUS

3 UNIBUS Loads
(2 UNIBUS Loads

without DM11-BB

DHI11-AD
With Modem

+5 Vdc@10.8 A*
+15 Vdc@400 mA

+5.25
+15.75

+5.0
+14.75

C9A2
A7BI

Control

-15 Vdc@645 mA

—15.75

—14.75

C9B2

3 UNIBUS Loads

DHI11-AE
Without Modem

+5 Vdc@8.6 A*
+15 Vdc@100 mA

+5.25
+15.75

+5.0
+14.75

C9A2
ATBI

2 UNIBUS Loads

Control

-15 Vdc@340 mA

—15.75

—-14.75

CI9B2

DMI11-AA

+5 Vdc@4.0 A

+5.25

+5.0

A4A2

Distribution
Panel

+15 Vde@2.0 A
-15 Vdc@2.0 A

+15.75
—15.75

+14.75
—14.75

A4N2
A4B2

NO UNIBUS
Loads

*Add 0.2 A if last option on UNIBUS (UNIBUS Terminator consumes 0.2 A).

DHI11-4

DH11 INSTALLATION

Installation Flowchart

OBTAIN CUSTOMER

SPECIFIC INFORMATION:
e

A
’

SYSTEM PLACEMENT

START

DEVICE PLACEMENT

UNIBUS LOADING

QMA DHI11

POWER
REQUIREMENTS

PREINSTALLATION

e CUSTOMER

CONSIDERATIONS

APPLICATION

REQUIREMENTS:

I.E. DEVICE ADDRESS,
VECTOR ADDRESS, ETC.
ALL

DO NOT INSTALL OPTION ]

VARIABLES
OBTAINED

UNPACK AND VERIFY ALL

COMPONENTS RECEIVED

INSPECT BACKPLANE FOR
IN
INSTALL
SHORTS.

| CABINET WITH PROPER
SOURCE
POWER
.

REQUIRED

PERFORM

RESISTANCE

CHECKS ON BACKPLANE,
APPLY

POWER

AND

VERIFY VOLTAGES, TURN
POWER OFF

MKV84-1307

DHI11-5

DH11 INSTALLATION

u?’r"’ww

CONFIGUREDH11 “DATA"
MODULES

FOR

CuUS-

TOMERS REQUIREMENTS.

INSERT

H8611

MODULE

AND

M7277 — ADDRESS

TEST

CONNECTORS IN M5906
INSTALL

ALL“"DATA” MODULES IN

BACKPLANE.

ALSO

M7821 - VECTOR (A02 +
P~

A06)
-

M796 — VERIFY 100 PF

CAP.

INSTALLA G727 IN SLOT

EO2.

Y
PERFORM

RESISTANCE

CHECKS ON BACKPLANE,
APPLY

POWER

AND

VERIFY VOLTAGES
A
-

EXECUTE DH11

DIAGNOSTIC IN

PDP11 -ZDHM** WITH
MCU LOGIC TEST

EXTERNAL MODE AND

DISABLED

OBTAIN THREE PASSES

<SW10 = 1>,

WITHOUT ERROR

DH11 TEST

PASSES!|
THIS MODE

CHECK BOARDSEATING,

MODULE
CONFIGURATION, OR
REPAIR DH11.

MKV84-1308

DHI11-6

"y,

DH11 INSTALLATION

DH11 MODEM

CONTROL
BEING USED?

TURN OFF POWER,

__J

CONFIGURE M7807
MODULE AND REMOVE

pbm11-BB ADDRESS +
"7\

VECTOR

G727 FROM SLOT EO2.

ATTACH 4 MCU CABLES

(BCOBR'S) TO M7807
AND M7147/M7808
MODULES AND INSTALL
IN DH11 BACKPLANE

PERFORM RESISTANCE

CHECKS ON BACKPLANE
APPLY POWER AND
VERIFY VOLTAGES

U
MKV84-1309

DHI11-7

DH11 INSTALLATION
"y,

ATTACH H861C TEST

CONNECTOR AT MCU
CABLE ENDS AND

PDP11 — ZDHM** WITH

EXECUTE DH11

DIAGNOSTIC IN
EXTERNAL MODE AND

MCU LOGIC|ENABLED

<SW10=0>

OBTAIN THREE PASSES
WITHOUT ERROR

PDP11 — ZDHK** TEST 0

EXECUTE DH11

DH11 TEST

DIAGNOSTIC AND OBTAIN

PASSES

THREE PASSES WITHOUT

THIS MODE

ERROR

CONFIGURE: H3007 DIST.
-

PANEL FOR MODEM

REQUIREMENTS AND
INSTALLATTACH 2 DH11
DATA CABLES <BCO6S>

TO M5906 MODULE AND

REMOVE H8611 TEST

CONNECTORS

REPAIR MCU LOGIC

AND/OR CABLES

MKV84-1310

wmwmm%

DHI11-8

DH11 INSTALLATION

MARK EACH CABLE END

FOR SOURCE AND

DESTINATION.

CORRECTLY FOLD AND
ROUTE ALL CABLES AND
|

ATTACH TO H3007
o
.

EXECUTE DH11

DIAGNOSTIC IN
EXTERNAL MODE WITH
H315 INSTALLED FOR

[

poP11 - ZDHN""@ 210
(SINGLE LINE TEST)

SINGLE LINE TESTING
(ETA LINES ONLY) AND

OBTAIN THREE PASSES
‘WITHOUT ERROR

DH11 TEST

PASSES
THIS MODE

CHECK OR CHANGE
|

DATA CABLES, DIST.

PANEL SWITCHES CABLE l
CONNECTIONS

MKV84-1311

DH11-9

DHI11 INSTALLATION

EXECUTE DH11

PDP-11-ZDHN ** @ 214

DIAGNOSTIC IN ECHO
TEST MODE AND OBTAIN

NOTE:

THIS TEST SHOULD ONLY

THREE PASSES WITHOUT

ERROR

BE DONE FOR TERMINAL
'

DH11 TEST
PASSES
THIS MODE

BUILD AND EXECUTE
DEC/X11 WITH THE DH11
MODULE AND OBTAIN

THREE PASSES WITHOUT

LINK VERIFICATION

CHECK ALL SPEED AND
CABLE CONNECTIONS OF

TERMINAL LINK

- -{ PDP11 — CXDH**

ERROR

\DEC/X11
TEST
PASSES

CHECK SYSTEM

'CONFIGURATION

MKVB4-1312

DHI11-10

IS DH11

L NE/
f
20MA

Y
A

EXECUTE ITEP LINK TEST |
PROGRAM

PDP11 — ZITA®*
ZDHL**

| CHECK CONFIGURATION

LINK

TEST
PASSES

1 OF LINK FOR ISOLATION
OF THE FAULT

RETURN SYSTEM TO

NORMAL CUSTOMER
CONFIGURATION,
INITIATE CUSTOMER
ACCEPTANCE
MKV84-1313

DH11-11

DHI11 INSTALLATION

DHI11 Backplane Module Placement

G7360
Al

M5906

PRIORITY

M971

SELECT
CABLE
B|

CABLES

DATA

CABLE
NOTE &

wmo20

M7288

PRIORITY |

AND
B|

EIA

LEVEL
“T‘— CONV.
7

A |_caBLE

M7821

M7289

M7277

M7278

INTR.CNTL

VECT

—JCONNECTOR|pPARAMETER
CONTROL
NOTE

SELECT

AND
4

M7279

INPUT-

‘
108

|
SYSTEM
CONTROL

EXTERNAL | AND

DATA
CABLE

B CLOCK
NOTE 6

M7280

|
|

CURRENT

GATING

ADDRESS

anD

AND

BYTE

RECEIVE
ADDRESS | counT
SCANNER | SELECT* | Reg.

FIFO

MULTIPLE

BUFFER

UART

LINES

| MULTIPLE

M405
£ | EXTERNAL

A CLOCK
NOTE
6
M4540
gl

DHMN

SYSTEM
CLOCK

VIEW FROM MODULE SIDE

* REQUIRES JUMPER SELECTION

DH11-12

DHI11 INSTALLATION

DH11-AA, AC
WITH

DH11-AD
WITH

DH11-AD MCU

DM11-BB MCU

2
M7247

CABLES

c
2

M7821

M920

NPR

CONTROL

NPR

UNIBUS

MASTER

‘

f
CABLE
|

M796 |.\, BUS

M7247

CABLES

_{ conTroL | conTROL |

;

MUX

8-15

E| CONTROL | ADDRESS
AND

__| SCANNER

CONTROL

M7147

M7807

CABLES

MUX

AND

UNIBUS
SCANNER
CONTROL || CONTROL
LINES

0-7

SELECT*

LINES

8-15

ADDRESS

crsng

M105

M7246
|

LINES
‘

CONNECTOR|

MUX

LINES
Al

SELECT®

M7821

INTR.CNTL.

VECTOR

SELECT *

G727

'_‘

CONTINTY

NOTES:

—

NOTE 1

| ‘

l l

I |

BACKPLANE SHOWN WITH G727 INSTALLED AS WOULD BE THE
CASE IF IT WERE A DH11-AA, AC, OR AE WITHOUT MODEM CONTROL.
|F FIRST UNIT IN EXPANDER BOX, REPLACE M920 WITH
BC11A CABLE.

IF LAST UNIT IN BOX, REPLACE M920 WITH BC11A CABLE WHEN

EXPANDING TO NEXT BOX.

IF LAST UNIT ON UNIBUS, REPLACE M920 WITH M930 TERMINATOR.

FOR DIAGNOSTIC CHECKOUT OF DH11-AA, AB, AC, REPLACE M971

MODULE SLOTS PROVIDE FOR ADDITIONAL CLOCK RATES.

(BO7) WITH M974 TURNAROUND MODULE.

MK-2612

DHI11-13

DH11 INSTALLATION

M7277 Module:
e

Slot 4

| wa

=71
ws

m&JMWB

]

|
W8

W11

Wiz

wio

[

we
:

WK
- 2586

Resides In Floating Address Space (See Chapter 2)

Device Address Ranks 2

DHI1 Data Control Device Address Jumper Selection

MSB

L5B

114
| 13 12'11[10'9'8[7'6'5'4

3'21

0 I 0

JUMPERS
T

N
i

JUMPER

NUMBERs

RN B

]

‘

|W12fwit|wiojwe | we|

‘

w7 | we | ws | wa

DEVICE

ADDRESS

760000

ouT

ouT
ouT
ouT

ouT

ouTiouT

760060
760100

ouT

760120

OUuTlouT
ouTjOUTIOUT]

760140
760160

|
ouT
ouT
oUT{OUT

760220
760240
760260

ouT
ouT
ouT

ouToOUT

jour

ouT

760020

760040

760200

T60300

760400

ouT

ouTtlouT

ouTlouTjouT
OUT]

760500

—

760600

760700
761000

NOTE: JUMPER OUT RESPONDS TO LOGICAL ONE ON THE UNIBUS.
MK-2698

DHI11-14

DH11 INSTALLATION

DM11-BB Modem Control Device Address Jumper Selection
M105 Module:

Slot El

The DM11-BB Resides In Fixed Address Space Starting At 770510.
w12

w11

wm\
W

—

we——"

W4/
w3

MK-2803

Jumper Selection

MSB

IfilM

13 12‘11

! I 1]

'
.

JUMPER

Numser

JUMPERS

“

|
1.

|Wi2]wit

ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT:
ouT
ouT
ouT
ouT
ouT
ouT

ouT

]
I

I
|
|

I
!

I
I

]

o oo

|
I

]
I

i
'

3|2

6I5

gla

LSB

]

[

DEVICE

| NUMBER

{wio | we | wa | w7 | we | ws | wa | W3 | appgess | oF uniT

ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT JouT
ouT
ouT jouTt
ouT
ouT JouT|ouT
ouT
outlout|ouT
ouT
ouT |ouT
ouT |ouT
ouT
ouT
OuUT
ouT
ouT

|ouT
|ouT
|oUT
|ouT
|ouT

ouT |ouT

ouT

770500
770510
770520
770530
770540
770550
770560
770570
770600
770610

ouT]

|ouT|
ouT|
|ouT]
out|

ouT
ouTt [ouT|

OuUT{
ouT
ouT |ouT
ouT|ouT |ouT}|

770620
770630
770840
770650
770660

770670

|1ST
|2ND
|3RD
|4TH
|5TH
|6TH
|7TH
|8TH
|9TH
|10TH

|11TH
|12TH
|13TH
|14TH
|15TH

|16TH

MAX #/SYS.

NOTE: JUMPER OUT RESPONDS TO LOGICAL ONE ON THE UNIBUS.
MK-2604

DH11-15

DH11 INSTALLATION

DHI11 Data Control/DM11-BB Modem Control Vector Address Jumper Selection
M7821:

Slot A6 For Data Control

Slot F1 For DM11-BB Modem Control

W9 - Normally In, Except For PDP11/15s or 20s.

[
BH—

e
w7

M7821

—

M7821

UP TO REV C

i gP

REV D OR LATER

MK-2579

DHI11-16

DHI11 INSTALLATION

Priority Plug Placement

DHI11-AA, AB or AC - G7360 Module, Slot A 7

DH11-AD, AE - M5906 Module, Slot AB7
TRANSMIT
PRIORITY

/ PLUG

\—

RECEIVE \&
]

PRIORITY
/PLUG

L, J2
MKVBA- 1631

DHI11-17

DH11 INSTALLATION

Data Control Vector Selection

M7821 Module, Slot A6
MSB

mlm

wnlm

0 l ojolo l 0|

LSB

109

a]visla[-ala

WJUMPEHSW’/‘D ol
T

2110

JUMPER

VECTOR

NUMBER | W8 | W7 | W6 J W5 | W4 | W3 Jw2 | \orcree
N 1IN

300

IN | IN
IN | IN

N | IN

320

TRECE

330

N | IN

YRR
TRETE

B
B

TREE

RTRED

fin

in
N

IN | IN
NN

310

IN
N

340
350

360

370

400

500

600

700

* W2 MUST ALWAYS BE IN: XXO = RECEIVE / XX4 = TRANSMIT
NOTE: JUMPER INSTALLED PRODUCES LOGICAL ONE ON THE

UNIBUS.

AR 2ERT

DM11-BB Modem Control Vector Selection
M7821 Module, Slot F1
MSB

LSB

1413120111109

ojolofofo|o]|o

8{7l6l514|3I2
je——iUMPERS
T

JUMPER

NUmBer

| W8 | W7 | we

———| 0 | 0
]

ws | wa

|
VECTOR

fwa|wz

| YEEEOR

IN | IN

300

IN | IN

110

IN|

304

IN | IN

IN | IN
in | in
IN | IN
iN | IN
N | IN

iNbin]

310
314
320

IN
IN

IN|

IN | IN
TRICE

IN | IN
TV

T IN

BIN

in | N b N

TRECE

IN T IN

ELY

TRECE

ITRER

340

344

IN]

350
384

TRENE

324
330
R

360
364

370

RU R
400

500

N | IN

600

TRETREL

700

NOTE: JUMPER INSTALLED PRODUCES LOGICAL ONE ON THE UNIBUS.
BAK- 2608

DHI11-18

DH11 INSTALLATION

DH11-AD Modem Control Device/Vector Address Jumper Selection
M7808 Module, Slot CDEF 1

Wit

W18

W12~
W9

Wm\

W14~
W8

W5 \

wis

W2 —_

ME-2800

‘DH11-19

DH11 INSTALLATION

M7807 Device Address Jumper Selection

MSB

LSB

|15|14

l 1 l 1

"’

12|11
[

|
NUMBER

gla

6'5

JUMPERS
'

JUMPER

| W8

]

JW14 ] w11 | wo

I
|

fwi0 | w17

ouT

3|2

:-} ojlojo |

]

)

|wie | wi3|

w12 | wis

' DEVICE

ouT

NUMBER

ADDRESS | OF UNIT
770500

770510

|1ST
|2ND

770520
770530
770540
770550
770560
770570
770600

|3RD
|4TH
|5TH
|6TH
|7TH
|8TH
|9TH

OUT}
ouT
OUT |OUT|

770610
770620
770630
770640

|10TH
[11TH
|12TH
|13TH

OUT|]

770650

|14TH

770660

|[15TH

ouT

OouT |

OUT |

ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT
ouT

ouT
ouT
ouT
ouT
ouT
ouT
ouT
OuUT
ouT
OUT
OuUT

ouT
ouT
ouT
OUT
ouTtjourt
ouTjouT
OuUT jouT|ouT
OUT JOUT | OUT

ouT

|OUT
|ouT
|ouT
|ouT

ouT

OUT

|oUT

ouT

OUT

|OUT

OUT | ouT

ouT

OUT |OUT

OUT|OUT

|OUT |
OUT|

|OUT}

|ouT

|ouUT|

770670

|16TH
MAX #/SYS.

NOTE: JUMPER OUT RESPONDS TO LOGICAL ONE ON THE UNIBUS.
MEK- ot

DH11-20

DH11 INSTALLATION

M7807 Vector Address Jumper Selection

LSB

MSB

l’mlm 13 1z|11l109 8 7,6I5 4 3|zl1|0|
Ioloo ulnlu 0 w%.lumpms—————-olnlul
i
|

L
R

]

JUMPER

. @

VECTOR

NUMBER | W1 | W5 | WA JWE|W7|W3)W2) AppRESS
IN | IN
N | oIN
N | IN
N | IN
N | IN
N | IN
N | IN
N | IN
oin LN
NP
in | N N
NN N
LN LN
N
inbin
N
RETE KR
IN

v
v

N
in

IN
N | N

IN
IN
N | IN
LN
N

N
ALY
v
v

IN
IN
N | IN

N
i

300
304
310
314
320
324
330
334
340
344
350
354
360
364

370
374
400

500

600

N | IN
NN

bin
i

200

NOTE: JUMPER INSTALLED PRODUCES LOGICAL ONE ON THE UNIBUS.
MK-2606

DH11-21

DH11 INSTALLATION

DM11-AA Distribution Panel Module Placement

EIA LEVEL CONVERSION
TURNAROUND

DATA AND MODEM CONTROL

CONNECTOR
STORAGE

(DM11-DC)

)

ARND

‘

‘
‘

TURN

LNILN

;847 ; 6

ARND

15114

13[12811|10|l9

‘

LNILNILN|LNRLN|LN

CABL

12-15]

8-11

M594 | M594 |

"M971]
8-11

M594 | M594

|LNRLN|LN|LN|LN

LINES|

|al3]|2]1]0

4.7

7|6

DM1 1'%52“‘:”‘

‘

H8e

t‘N

DATA LINES ONLY

(DM11-DB)

‘

21,2019,18,17,16,15,14,13,12,11,10,9

M974

EIA LEVEL CONVERSION

FOR MODEM CONTROL

(DM11-DB)

[

DTR-RTS JUMPER CARDS
OR

1 4-7

LINES

TURN|

| 0-3

ARND|

/El

| 12-15]

P
B

| 0.15

DATA CABLE

INPUT/QUTPUT

COMPONENTS

M974

SLOT LOCATION

1 - M596 OR M5960

4 LINES

fuines

OPTION

TURNAROUND
|

-DIAGNOSTIC ONLY-

Mo73
-

DATA ONLY

DH11-AA
AC‘
-

CABLE CARDS FOR

20mA LEVEL CONVERSION

| 0-3

JLINES |

DATA LINES ONLY

M971)

[ MO71]

VIEW FROM MODULE SIDE

\
20mA LEVEL CONVERSION

M971]

20mA MATE-N-LOK
CABLE CARDS

B6 THRU B21

1 - M594
EIA LEVEL CONVERTER

B4,B5,A4,A5

4 - W04

DM11-DB
EIA LEVEL CONVERSION

DTR-RTS PULL UP CARDS

A6 THRU A21

4 - BCO1R

EIA CABLE CARD

4 LINES

ASSEMBLY

" DATA ONLY

‘

B6 THRU

B21

‘

4 - M970
CABLE CARDS
4 - BCOSC

EIA CABLES

B6 THRU B21

ONTO M970

4 - M594
OM11.DC

.. g:gafivm co NVERTER

EIA LEVEL CONVERSION

‘

4 LINES

Raoaae CARD

DATA AND

MODEM CONTROL

A6H THRU A21

B6 THRU B21

4 - M970

(DM11-BB MCU REQD)
4-

CABLE CARDS

B6 THRU B21

BCOSC

ONTO M970

EIA CABLES

MK- 26893

DH11-22

DH11 INSTALLATION

M596/M5960 Jumper Selections

" ¥

-cg- (- | m— |

—

1
@{

- o

wWae

M596

o1 —wa
OmOa—

— W3

W____%._wz

M5960

JUMPERS

SLOTS

B22 | B23 | A22 | A23 | ms96 | ms9e0

HINES

| a

12 | wa

13 | w2

2o | 6| | 10|
3

| 11

‘

15|

REMOVE JUMPER

| FOR SPEEDS ABOVE

150 BPS ON THE

ASSOCIATED LINE

MK-2608

DH11-23

DH11 INSTALLATION

BCO1R/M970 Modem Control Jumper Selection

A. BCOIR
,

L“"“W 202

-m/flt______ EIA

s
W o

202

m._..____‘_i
e
s
S

——— 811

\]M ELA

T~ BuUsY

erpe—
| 8

BUSY

“m'*\\

EIA CONNECTOR
PIN NUMBER

REQUEST TO SEND @:
FORCE BUSY

(MODEM)

iausv

o)e

SERIAL CLK RX

(17)

ggc& mfzogfixm

EIA
Ay

SEC RX DATA

SEC TX DATA

BELL 202

0 o—0

SECTXDATA

(73)

17N

JUMPER

@-—-—o—c

DATA TERMINAL

DM11-DC

BUSY

ouT

oUT

ouT

oUuT

EIA

ouT

811

ouT

(LOGIC)

202

o«

EIA

* 301

DM11-DB

F1 |? TO/FROM
BACKPLANE

RING

READY

Ul L

EIA

301

> J2

TO/FROM

EIA CABLE

BACKPLANE
PIN NUMBER

————-

202

301*

e S Se

> M2

* 301

0—0

R2 |

* 301 JUMPERS ARE NOT USED

ON M9700 CARD (BCO1R)
MK-2808

DH11-24

My,

DH11 INSTALLATION

H317-B Distribution Panel Jumper Configuration

RNRNRRNNK

DESCRIPTION

JUMPERS

TYPE

BELL OR

PODONOOO=NWEY

EQUIV

103A

300 BAUD FULL DUP

103E,G,H

300 BAUD FULL DUP

103F

300 BUAD FULL GUP

113A

202C,D

1800 BUAD 1/2 DUP

8118

LOW SPEED TWX

EIA

'RS232
— C (SEE BELOW)JOUT,

U R

- MODEM

JUMPERS

ks ol s

RNWHBOIONROO
=MW

3\
A

OO0 O00

000000000000

CINCH
CONNECTOR
TYPICAL 16 PLACES

PIN25TO 4-———-—l

JUMPERS

PIN11TO 14

JUMPERS

PIN 12 TO 16

JUMPERS

PIN12TO 17

JUMPER CONFIGURATIONS ARE TYPICAL FOR ALL 16 LINES.

_gg1g;

ONLY THE JUMPER NUMBERS VARY (SEE TABLE 2-4)

U 0-3

DATA 0O-7

~W36—
-W34-

—W45—
—W37—
—~W44—

~W35—
—W43—

J17

DTR COMMON (+5V)

RTS COMMON (+5V)

W42

__RTSO00

W43 ___RTsO1
W44 RTs02

W48 RTSO03
W46 RTso4
W47 RTSOB
WAa8

RTS06

W49 RTSO07

MKVB84-1314

DH11-25

DH11 INSTALLATION

W%
%%
W

H317-B Distribution Panel Jumper Configuration (Cont)

EIA CONNECTOR
PIN NUMBER

REQUEST TO SEND 40

‘

< FF,REE&P*

FORCE BUSY 25 ooo-—o———-J
BUSY

SEC RX DATA 17

811

(811)

SEC RX DATA 12 op

(BELL 202)

SEC RX DATA 16

‘

» X,DW&A*

EIA

(EIA)

SEC TX DATA
11

(BELL 202)

SEC TX DATA 14

EIA

(EIA)

<+ZBY&C

* CONNECTOR/PINNINGS

VARY, DEPENDING ON

LINE NUMBER

\
(SEE

Be)

o{a»JOQ

o |

O 114

MCU 8-11

DATA 8-15

[

LEYELE:

©fgEzszs
o 00

1LO J14

1L,

MCU 12-15

J14

3323

1.0 114

‘

[

00 00 €0 TM~

J21

il
e

DTR COMMON (+5V)

RTS COMMON (+5V)

DTRO9
DbTR10
brR1d

RTS 09
RTS 10
RTS 11
RTS 12
RTS 13

¢W DTR 12
e

[

i dddld

‘

S
W85
W86

00 I~ (O LD

= HE I

‘

DH-3)

IJEW‘cgémimhl»wafimgcJ«gdmittiJ15

TABLE

DTR13

DTR 14

RTS 14

DTR 15

RTS 15
MKVE84-1315

DHI11-26

DHI11 INSTALLATION

H317-B Modem Signal Jumper Selection

Table DH-5

H317-B Modem Signal Jumper Reference

EIA Sémmimry

Request to

Modem

Receive (Pine 16)

Send (Pin 4)

Signal

Line #

Connector

Jumper

Connector

Jumper

00
01
02
03

FF
R
EE
P

W6
W5
W10
Wil

X
D
W
A

w3
W8
Wi2
W16

W18

w20

06
07

EE
P

W26
W30

W
A

w28
W32

Pin No.

No.

w22

Pin No.

No.

W59
W63

w
A

W53
W57

14
15
16
17

FF
R
EE
P

W67
W71
W75
W79

X
D
w
A

W69
W73
W77
WSl

00
01

X
D

W4
W9

z
B

w2
W7

w2l

W19

w33

W3l

10
13

02
03

05
06

11
12
14

15
16
17

W
A

Wi3
W17

Y
C

W6l
W65

Wil
W15

w23
W27

W25
W29

‘B
Y

W54

W52

W66

W64

w170

D
W

D
W
X

D
W
A

W58
W62

W74
W78
W82

B
Y

B
Y
C

DHI11-27

J16

J19

EE
P

Connector

J18

W51
W55

12
13

Panel

W24

Distribution

W56
W60

W68

W72
W76
W80

J21

J16

J18

J19

J21

DH11 CABLING

)

DH11 Cabling
This section contains cabling diagrams for DH11-AA or AC with DM11-BB Modem
Control and the
DH11-AD, AE with DH11-AD Modem Control. These diagrams also show correct
test connector placement. Details of each DH11 cable are provided in Chapter 3; test connector
information is included in

Chapter 4.

NOTE
Refer to Tech-Tip #11 for Diagnostic testing and

cabling.

DHI11-AA, AC/DM11-BB Cabling

¢
{

WMCY
1218

{B2)

{

SATA

DATA CABLE
BC08S

‘:H‘ |

A CDO2JYY

018

"W:BQ:&:*;W

A2 (CDO242)

(81

NOTE 2

(CDO1J1)
!% 81A3 (807)
B2 eMBBED SIDE UP

;i% ~—— s20c001J2
‘

NoTE: §

‘\”

]

‘

RIBBED

BUBOED___ |

82-CDO1J2 MCU 1215
A3-CDO1J1 MCU 8-11

A2 e BIBBED

A2-CD02J2 MCU 4.7

Al o BIBBED

Tre
)

A1-CDO2J1 MCU 0-3

L
SMOOTH
__ 81.807 DATA 0-15

‘\

l
|

DATA CABLE

RIBBED SIDE UP

TO M871y

:
m‘2:.STRIBUT!
BUTION

)
M%

FOLD DATA CABLE

TO CREATE HALF TWIST
50 THAT ALL CABLES

DATA

CABLE

IT IS BETWEEN B2 AND A3.

MKV84-1633

DHI11-28

DH11 CABLING

DISTRIBUTION PANEL LOCATION
B1-807

- DHYY LOGIC LOCATION

AZ-CDORI2

AV-CDO2JY

#2-com .2

" A3-COOT

807
SMOOTH SIDE |

SEE NOTE 3

[ OH1 1AM, AC

' | DATA CONTROL

BRU NOTE Y

N, iNPUT/OUTPUT

(Al

MCY
03

“‘i

\ cO021
L

]

M7247

CONTROL MUX LINES 0-7

mM7247
€001

L 8-15
MUX LINES
CONTRO

’

NOTES:

1. TO INSTALL BOOBS CABLE TO MB71-807:

#) REMOVE G7380-A07 WM””‘! -~

b} ROUTE CABLE DOWN THRU MODULES
WWWWWMWW
AGAINST BOARD.

) REINSTALL MODULES REMOVED.

2. mmmmmmmmmmw & CO0Z:

5108

T BOARD.

3. CIRCLED ITEMS INDICATE LABELS WHICH
END.
AT CABLED
MUST BE ATTACH

DH11-29

DH11 CABLING

DH11-AD, AE/DH11-AD Modem Control Cabling

J20

RIBBED SIDE UP

J21

RIBBED

C-FO1J2 TO J21_ MCU 12-15

Jig RIBBED
417

RIBBED

J1g

RIBBED

C-FO1J1 TO J19 MCU 8-11
C-F02J2 TO J18 MCU 4-7

Jig RIBBED
smMooTH

C-FO2J1 TO J16 MCU 0-3
ABO7J2 TO J17 DATA 0-7

SMOOTH_ AB0741 TO 420 DATA 8-15

LINE 15

H317-B
DISTRIBUTION

PANEL

H315

TEST CONNECTOR

INSERT CABLES SO
THAT RIBBED SIDE

FACES OUT

(ALL 6 CABLES)

SMOOTH

FROM DH11

TEST CONNECTOR

MUD'J-;LES

MKV84-1316

DHI11-30

DH11 CABLING

FOLD AND PLACE J17 BCO8S CABLE SO THAT IT 1S BETWEEN J18 AND J19
CABLES. ALSO FOLD AND PLACE J20 BCO8S CABLES SO THAT ITIS ON TOP.
ALL CABLES SHOULD BE RIBBED SIDE UP.
J16 J18 J17 J19 J21
RIBBED
SIDE
UP
RIBBED

SIDE

DOWN

21
[——

«
A"

| ABO7-J2 TO J17

\‘\5N

CDEF02-J1 TO J186

AB07-J1 TO J20

]

Y &

CDEF02-J2 TO J18

CDEFO1-J1 TO J19

’

CDEF01-J2 TO J21 ON
THE DISTRIBUTION

RIBBED

1. TO INSTALL M7807 AND

M7147 OR M7808 CABLES:
a)REMOVE M7821 FROM A02
AND M796 FROM BO2.
b)ROUTE CABLES DOWN

THROUGH MODULES.
¢)CONNECT CABLES TO MODULES
RIBBED SIDE OUT.

NOTES:

d)REINSERT M7821 AND M796.
CIRCLED ITEMS INDICATE LABELS
WHICH MUST BE ATTACHED AT
CABLE END.

DH11-AD

M7147 OR M7808

MODEM CONTROL

MUX AND SCAN

CONTROL LINES 0-7
(CDEFO2)

L
M7807

MUY AND SCAN

CONTROL LINES 8-15
{CDEFO1)
MEVES-1317

DH11-31

QMA DH11 CABLING

H3007 Distribution Panel Component Locations (Front View)

MOUNTING SCREWS

SWITCHPACK

LAYOUT

1) 0

(CLOSED)

m 010

(OPEN)

(IDENTICAL

8 PLACES)

MOUNTING SCREWS
MK-4487

DHI11-32

QMA DH11 CABLING

H3007 Switch Selections
25 PIN

r———

H3007
ISWITCHPACK|
I swi
oo

| SW8

FRAME GND

;

SW10

|
|

} BUSY

SW 5
|| Sw4

| sws

O—t,

} Swe

SUPREC _
|
‘

SUP TRANS

D SUBMINIATURE
ON_H3007

O
14

Ve
|
SW2

—()
11

TRANSMIT DATA

RECEIVE DATA

CLEAR TO SEND

SIGNAL GND

CARRIER
|

RING INDICATOR

DF02/

bo)

DFO3/

H315

DEC

COMMENTS

103J

212A

2028

TESTING

TERMINAL

OFF

NORMALLY OFF

2
3

*
*

ON
*

*
*

SEC XMIT DATA
SEC RECV DATA

RECEIVER CLK

BUSY

DTR

RTS

SWITCH

OFF

FRAME GND —

. *DON'T CARE
MKVB4-0267

DHI11-33

QMA DH11 CABLING
AT “’*%%
Ve
ABO7-J1 TO BJY
|

CDEF02-J1 TO AJ10

ABO7-J2 TO AJ9

CDEF02-J2 TO AJ11

CDEFO1-J1 TO BJ10

CDEFO1-J2 TO BJ11

e bISTRIBUTION
PANEL

LIl riBBED

NOTES:

1. TO INSTALL M7807 AND

M7147 OR M7808 CABLES:

a)REMOVE M7821 FROM AQ2
AND M796 FROM BO2.

M7147 OR M7808

b)ROUTE CABLES DOWN

MUX AND SCAN

THROUGH MODULES.

CONTROL LINES 0-7

¢)CONNECT CABLES TO MODULES

DH11-AD

MODEM CONTROL

J
E

(CDEFO2)

RIBBED SIDE OUT.

d)REINSERT M7821 AND M796.
2. CIRCLED ITEMS INDICATE LABELS
WHICH MUST BE ATTACHED AT

CABLE END.

M7807
MUX AND SCAN
CONTROL LINES 8-15

(CDEFO1)
MKWVB4-1318

DHI11-34

QMA DHI11 CABLING

QMA DHI11 Distribution Panels Cabling (Interior View)

H9544 SJ

A-J10 TO CDEFO2-J1

BJ10 TO CDEFO1-J1

B-J11 TO CDEF0O1-J2

A-J11 TO CDEFO2-J2

B-J9 TO ABO7-J1

A-J9 TO ABO7-J2

MKV84-1319

DH11-35

DH11 DIAGNOSTICS

DH11 Diagnostics

Four Diagnostic programs are available to support the DH11 in PDP-11 systems. These diagnostics are
listed in Table DH-6.

Table DH-6

DH11 Diagnostics

Diagnostic

PDP-11

Function

Diagnostic Name

Systems

Checks Dhl1
Functional

DHI11 Diagnostic

(C)ZDHM**

Checks DH11
Line Logic

Data Reliability Test

(C)ZDHN**

Checks DH11
Modem Control

Modem Control
Diagnostic

(D)ZDHK
**

DHI11

Interprocessor Test

Logic

Link

Testing

Program (ITEP)
ITEP Monitor
DH11 Overlay

(D)ZITA**
(D)ZDHL**

Ny,

DH11-36

DH11 DIAGNOSTICS

CZDHM Diagnostic Summary - The CZDHM includes 44 tests to verify all of the functional logic and 4
additional tests for limited modem control testing. Each line may be tested separately, up to a total of 256
lines. Comprehensive error reports are available for complete fault isolation (see program document).

CZDHN Diagnostic Summary — The CZDHN is a general purpose test and exerciser that consists of
the following three independent subprograms:

Subprogram 1 - Data Reliability Test (Starting Address 200). Checks up to 16 DH11s, all lines

Subprogram 2 - Single Line Echo Test (Starting Address 214). Provides the capability to
compose messages sent to an attached terminal or messages echoed from the terminal.

Subprogram 3 — Data Patterns/Cable Tests (Starting Address 220). Provides a variety of data
patterns to be transmitted and turned around using an H315 Test Connector at the cable end.

one at a time, using various combinations of line parameters.

NOTE

To use default parameters, start at address 204.

DZDHK Diagnostic Summary - The DZDHK is a Modem Control diagnostic that consists of the
following four test groups:

Group 0 - Tests all scanner and line multiplexer functions.

Group 1 - Tests a single line using modem cable and H315 test connector.

Group 2 - Connect-Disconnect test for 103A modems.

Group 3 - Connect-Disconnect test for 202C modems.

Running DH11 Diagnostics — Two procedures (One for running CZDHM and CZDHN: one for DZDHK)
for running DH11 diagnostics are provided as follows.

CZDHN and CZDHM diagnostics can be executed automatically using the internal autosizer routine by
setting SWR Bit 0=0. These diagnostics can also be executed manually (where operator intervention is
needed to enter correct parameters), by setting SWR 0=1. CZDHM can also be executed without the
modem control tests by setting SWR 10=1.

Running CZDHM and CZDHN Diagnostics — The following summarizes running DH11 diagnostics.

Tables DH-7 through DH-10 provide descriptions of the parameter inputs for each of the diagnostics.

DH11-37

Table DH-7

Typical CZDHM/CZDHN Diagnostic Parameters

Parameter Question

Description

Type No. of addresses (octal)
between vectors (10 or 20)
10 CR

Enter 10 or 20 followed by <CR>. If
modem control vectors are interleaved with DH11 vectors, CZDHN only enter 20.
For standard DH11 contiguous vectors enter 10.

Type SCR address for first
DH11
<CR>
Type Vector Address for first

DHI11

<CR>

Type device selection parameter

<CR>

Enter the device address in DH11
octal of first device followed by <CR>.
Enter the Vector address for the

first DHI1 followed by <CR>.
Enter octal number encoded as
follows.

Bit00=1 Test DH11 #00
BitO1=1 Test DHI11 #01
Bit02=0 Do not test DH11 #02
111

Bit15=1 Test DHI1 #15

Examples:
177777T<CR> Test all 16 DHI11’s
100000<CR> Test only DHI11 #17(8)
000005<CR> Test DH11 #00 and 02
If a <CR> only is entered the program will default to
the last device select parameter entered. If this is the

initial load it will default to 000003 (DHI11 #00 and
01).
Type Line Selection Parameter
<CR>

Enter line number(s) in octal (same
format as device selection above).

If a %::CR:> return only is typed the program will

default to 16. Lines for all programs except CZDHN
subprograms 2 and 3, which default to line 00.

—

If more than one DHI1
is tested, the same combination of lines will be tested on all DH11’s selected.

DH11-38

DH11 DIAGNOSTICS

Table DH-8

Additional Parameter Inputs for CZDHN Subprograms 2 and 3

Parameter Question

Description

Do you want to change “LPR”
<CR>
(Y or N)?

Enter Y for YES or N for NO
If this is the first pass and NO is entered, the program
will default to: 9600 baud, 8 bit characters, 1 stop bit
and odd parity; otherwise it will default to the previous LPR selection and the program proceeds with
FILLER CHARACTER prompt below.

TRANSMITTER SPEED?
RECEIVER SPPED?

If yes, program proceeds with next prompt.

Enter one of 13 available speeds for transmit and
receive followed by <CR>. For 134.5 baud, do not
enter decimal point.
Enter desired number followed by

CHAR LENGTH (6, 7, or 8)?

<CR>.

<CR>

Enter desired number followed by

NO. OF STOP BITS (1 or 2)?

<CR>.

<CR>

Enter desired condition O followed
by <CR>=0DD E followed by <CR>=EVEN

PARITY SELECTION (E,O, or
<CR>
<CR>?

Enter just <CR> for NO parity

<CR>

FILLER CHARACTER?

FILLER COUNT?

<CR>

Enter desired filler character followed by <CR>. For
NULL filler just enter <CR>.
Enter 1, 2, 3 or 4 followed by <CR>. Enter just
<CR> for 0.

DH11-39

DH11 DIAGNOSTICS

Table DH-9

Additional Parameter Inputs for CZDHN Subprogram 2

Parameter Question

Description

NOTE
The following parameter questionaire applies only to
subprogram 2. Refer to Table DH-9 for continued
subprogram 3 parameters.
SEND MODE - (Y OR N)Y<CR>

Enter Y for yes or just <CR> for no. If yes, the
following prompt appears. If no, the program assumes
ECHO mode (see below).

TYPE SEND BUFFER - TERMINATE

At the console, type in any
characters you wish to send to the test terminal.
Always start the buffer with CR, LF.

WITH CONTROL-C

Example:

CR, LF
THE QUICK BROWN ... DOGS BACK CONTROL-C

Remember to end the buffer with CONTROL-C.
Once the buffer is sent, the program will repeat the
procedure beginning with the prompt TYPE LINE #
(00-17 OCTAL)
<CR>

SEND MODE - (Y OR N) N<CR>

Program assumes ECHO mode.

Testing Line 00 - Go type
in on test line

At the test terminal, type in any
characters you wish to echo through
the DH11 back to the terminal.

TYPE:{CONTROL-C TO EXIT]
[CONTROL-E TO ECHO BUFFER]

To echo complete message, terminate with

CONTROL E.
To return to console, type CONTROL-C.

At the test terminal verify that the echoed characters
match the original.

DH11-40

DH11 DIAGNOSTICS

Table DH-10

Additional Parameter Inputs for CZDHN Subprogram 3

Parameter Questi(mf

Description

<CR>

BUFFER SIZE (1-512)

Enter decimal number of buffer size. Enter <CR>

only for default buffer size of 256.
Enter the desired data pattern
described below.

PATTERN TYPE? (A, U, D, R, S,
B or <CR>?

A ALTERNATING 1/0
U BINARY UP COUNT
D BINARY DOWN COUNT

SET SR7=1 TO LOCK ON PATTERN

R RANDOM DATA
B TYPED IN BUFFER
S SINGLE CHARACTER
<CR> SEQUENCE OF A, U, D, ANDR

If A, U, D, R or <CR> is entered, the program will
transmit, receive and data check the selected pattern.
If SR7=1 the program will loop on the selected pattern, otherwise the program returns to the:
BUFFER SIZE (1-512) prompt
If B is selected, the following prompt appears.

Enter any characters that you wish

TYPE IN TEST BUFFER -

to use as the data pattern followed by CONTROL-C.
The program begins when CONTROL-C is entered.

TERMINATE WITH CONTROL-C

If S is selected as the pattern type, the following
prompt appears.

TYPE SINGLE TEST CHAR

<CR> Enter any single character followed by <CR>. The
program will fill the buffer with the selected character
and begin execution.

NOTE

Running DZDHK Diagnostics - The DZDHK diagnostic is used to check various functions of DH11
Modem Control. Typical parameter selections are
provided in Table DH-9. Start program at address
200 with SWRO0=1.

VECTOR ADDRESS

<CR>

Enter the correct vector address followed by <CR>. If
entry is incorrect, program will type “?” and repeat
prompt. If entry is not the device under test, program
halts.

DH11-41

DH11 DIAGNOSTICS

Running DZDHK Diagnostics - The DZDHK diagnostic is used to check various functions of DH11
Modem Control. Typical parameter selections are provided in Table DH-11. Start program at address
200 with SWRO=1.

Table DH-11
Parameter Question

DZDHK Diagnostic/Parameters
Description

CONTROL REGISTER ADDRESS
<CR>

Enter the correct 6 digit control

rect, program will type “?” and repeat prompt. If reg-

ister address is non-existent, the program halts.
LINE SELECT
PARAMETER

<CR>

Enter line number in octal followed by <CR>.

BITO0=1 Test line #00
BITO1=1 Test line #01
BIT02=0 Do not test line #02

TBITISmI Test line #15
Examples:

177777<CR>Test all 16 lines
100000<CR>Test line 17(8) only
000005<CR>Test lines 00 and 02

TEST -

Enter 3 digit number for the Test Group desired followed by <CR>
Test Group 0=000
Test Group 1=100
Test Group 2=200
Test Group 3=300

Refer to examples of each selected test and additional
parameter as required.

For Test-000 <CR> - The program prints the title;“16 LINE SCANNER TEST” and begins testing.

Turnaround test connectors are not needed for this test.

For Test-001 <CR> - The program prints the title followed by one additional parameter prompt:

SINGLE CABLE TEST LINE
NUMBER
<CR>

Enter the correct line number being
tested followed by a <CR>. An H315 test connector
must be attached to the Modem Cable for the selected
line.

DH11-42

DH11 DIAGNOSTICS

Table DH-11

DZDHK Diagnostic/Parameters (Cont)

Description

Parameter Quemtiom

For Test-002 <CR> and Test 003 <CR> - The program prints the title and the following parameter
prompts.

Enter the line number that will

103A or 202C Connect-Disconnect

originate the call (0-17 octal) followed by <CR>.

Test

ANSWER LINE -

Enter the line number that will answer the call (0-

<CR>

17 octal) followed by <CR>.

Enter the line number that will answer the call (0-

<CR>

DIAL ANSWERING -

17 octal) followed by <CR>.

You have about 5 minutes to make connection

DIAL ANSWERING DATA SET*

between the two data sets. Follow the procedure
below.

Press any key at the terminal. This causes the pro-

TYPE TTY KEY TO DISCONNECT

gram to begin the disconnect sequence. When the
sequence is completed, the following message 1s
printed, indicating successful completion.

Indicates DONE, no errors.

103A or 202C TEST COMPLETE

SPECIAL CONTROL FUNCTIONS:
¢

CONTROL-C - Escape from current test and select a new test.

CONTROL-V - Changes vector and register address.

CONTROL-D - Changes line number.

*Procedure for line connection:

Place answering data set in AUTO-ANSWER mode.
Place originate data set in TALK mode.
Dial answering data set from originate data set.

Wait for tone, then press DATA button. Data indicator should light on both data sets.
NOTE

The program now waits for interrupts from the
modem control. If the connection was properly
established the program will print the following
prompts.

DH11-43

DH11 MAINTENANCE AIDS

DH11 Register Bit Assignments
Register bit assignments for the DH11 are shown below.

SYSTEM CONTROL REGISTER 00 (READ/WRITE)

R «
R «
|
R
lf/w IONLVI
R/W,i} R/W , R/W IONWI
R/WIR/W
!omw

05
1

B
e
L FAVLY)
§

|
i

LAY

STORAGE
MEMORY

TRANSMITTER

INTERRUPT

MAINTENANCE

ENABLE

STORAGE

EXTENSION

MASTER

INTERRUPT

CLEAR

MEM

SELECTION

| RECEIVER

NON-EX

TRANS &

LINE

INTER ENABLE

INTER

NON-EX

MEM INTER

RECEIVER

MEMORY

INTERRUPT

* THESE BITS ARE READ/WRITE
WHEN BIT 09 IS SET

ENABLE
MKVE4-1320

DATA

OVERRUN |

VALID DATA
PRESENT

T[
T— |
Ny

HEEEER

—

LINE NUMBER

paRiTY

NEXT RECEIVED CHARACTER

ERROR
rraming
ERROR
MK-2832

LINE PARAMETER REGISTER 04 (WRITE ONLY)

HALF DUPLEX/

—

TRANSMITTER

\———-\’_...._J

RECEIVER

SPEED

CHARACTER

SPEED

FULL DUPLEX

PARITY

LENGTH

ENABLED

AUTO-ECHO

ODD PARITY

ENABLE

TWO STOP
BITS
MK-2833

CURRENT ADDRESS REGISTER 06 (READ/WRITE)
16

WHEN WRITTEN = LOADS RAM
WHEN READ = CURRENT ADDRESS OF TRANSMIT BUFFER
MK-2834

DH11-44

DH11 MAINTENANCE AIDS

10 (READ/WRITE)

BYTE COUNT REGISTER

OO0

CONTAINS THE TWO’'S COMPLEMENT OF THE NUMBER OF CHARACTERS TO BE TRANSMITTED
MEK-2835

BUFFER ACTIVE REGISTER 12 (READ/WRITE)

SET ONE BIT FOR EACH LINE = TRANSMIT GO

MK-2838

BREAK CONTROL REGISTER 14 (READ/WRITE)

SET ONE BIT FOR EACH LINE = BREAK CHARACTER

MK-2837

SILO STATUS REGISTER 16 (READ/WRITE)

|
H

|
|
READ ONLY
i

SILO FILL LEVEL

"*"‘“""'V“‘“"“

READ EXTENDED

|
i

I
R/W
]

]

SILO ALARM LEVEL

MEMORY

|
SILO
MAINTENANCE

k2838

DH11-45

DH11 MAINTENANCE AIDS

DH11 Tech Tips/FCO Index
This section provides tabulated listings of all Tech-Tips and FCOs issued to date on

Table DH-12

the DH11 option.

Tech Tip Index

o~
Speed

Tech

Bulletin

Tip No.

Title

Erroneous Clearing or RTS

DHI11 UNIBUS Loads

DHI11 Parity Errors

DHI11 Parity Operation

DMI11/DHI11 Installation

H739 Loss of Output Voltage

M5960 or M596 Used Above 150 Baud

DM11/DH11 Glitches on INIT

DHI11 Peripherals Handbook Error

Modem Control Programming

DHI11 Revised Checkout Procedure

Power Up Problem with M7838 (DH11-AE)

Power Short Circuit in DH11/M7821

DM11-BB Byte Instructions

105

DHS11/CSS Ext. Clock Option Cabling Error

105

DHI11 Power Harness Shorting

105

ngram Difference with M7147 vs. M7808

160

Data Tester/Turnaround

173

No.

DH11-46

DH11 MAINTENANCE AIDS

Table DH-13

DHI11 FCO History Chart

Reason

Module

FCO No.

Date

M7821

C0001

APR 72

M7278

D0002

JUN 73

DO0003

JUN 73

Quick Check

Eliminates ground
noise.

Parity always

enabled.

By etch from E74,

pin 8 to FF2

Etch trimmed.
Between E74,

pin 7 and pin 8.

touching E74,
pin 7.

M7277

B0003

FEB 74

INIT timing with

E66 is 7440.

MOS or solid state
memory may fail

DZDHC on PDP-11/45,

or PDP-11/50s.

M7821

S0005

JUL 75

Grant line reflec-

tions cause double

Added 180 ohm

R11 & R12 by El.

grants.

M7277

R0006

DEC 75

INIT timing with

E8 is 74121

solid state

C89 is 100 mfd.

Bus data to B

Added wire

memory may fail
DZDHC on PDP-11/70.

DHI11

S0008

SEP 76

INIT line cross

DO8U1 to FO2D1.

talk.

DHI11

S0011

SEP 76

M7277

R0008

NOV 76

M7807

R0004

APR 78

M7808

R0005

MAY 78

DHI11

S0012

DEC 78

Unused inputs &

Wiring A02H2-to-

Required when DHI11

9602 added at E2.

Lines 8-16 Line

R34, thru R37

AO02E1 grounded
on A02 (M7821).
used on PDP-11/34s.

Status unstable.

#10 V regulator

A02C2 & AO02E1to A03C2.

are removed and
R24=10K ohm.

Ré6 thru R9

failure

deleted.

Transitions on Modem

M7147 installed

lines

DH11-47

in backplane slot
C-F2.

DHUI11 INSTALLATION

DHU11 OPTION

DHU11 General Description

The DHU11 option is an asynchronous multiplexer which provides 16 full-duplex asynchronous serial data
channels on UNIBUS systems.
DHU11 Features

256-entry FIFO buffer for received characters, dataset status changes, and diagnostic

information

NPR or programmed transfers on transmit

64 byte FIFO for output data, each channel

RS-423-A/V.10/X.26 and RS-232-C/V.28 compatible

Full-duplex point-to-point or auto-answer dial-up operation

Programmable split speed per line

Total module throughput of 15000 characters per second

Automatic flow control of transmitted and received data

Self-test and background monitor diagnostics

DHU11 Reference Documentation

Refer to the following documents if the level of content in this section is insufficient:
e

DHUII Technical Manual - EK-DHU11-TM

DHUII User Guide - EK-DHU11-UG

DHUII Print Set - MP01794

DHU11-1

DHU11 INSTALLATION

DHU11 Components
A factory installed DHUI11 is refered to as a DHU11-AP. A field upgrade consists of a DHU11-M
(M3105) and the appropriate cabinet kit from Table DHU-1. Contents of the available cabinets are listed
in Table DHU-2.

Table DHU-1

Cabinet Kits

Cabinet Kit

For

CK-DHU11-A1l
CK-DHUI11-TF
CK-DHUI11-AE
CK-DHU11-TE
CK-DHUI11-AD
CK-DHUI11-AF

Non-FCC-compliant cabs (19 inch rack)
Orion-U rack and stack box
VAX-11/730/750 kernal systems
Orion-U system cabs
Expansion Cabinets
VAX-11/725

CONTENTS

BCO5L-03

BCO5L-06

BCO5L-07

BCO5L-10

H325

11111

H3029

212122

H3030

111

H3277

H9544-SJ.

70-20928-01

MKV84-0679

DHUI11-2

DHU11 INSTALLATION

Power Requirements/UNIBUS Loading
Table DHU-3

Option

M3105

Voltage Rating
Volts
Amps

Maximum
Voltage

Minimum
Voltage

Backplane
Pin No.

UNIBIS
Loads

+5.0
+15.0

+5.25
+15.60

+4.75
+14.40

Al1A2
CluUl

2.5 AC
1.0 DC

-15.0

Device Placement

Power Requirements/UNIBUS Loading

6.000
0.400

0.400

—15.60

—14.40

F1B2

The DHU11 (M3105) may be installed in any HEX height UNIBUS SPC slot.

DHU11-3

DHU11 INSTALLATION

DHU11 Installation Flowchart

( STi\RT )

OBTAIN CUSTOMER SPECIFIC INFORMATION:

SYSTEM PLACEMENT
DEVICE PLACEMENT

UNIBUS LOADING

PREINSTALLATION

POWER REQUIREMENTS

CUSTOMER APPLICATION

CONSIDERATIONS

REQUIREMENTS

I.E. DEVICE ADDRESS,

VECTOR ADDRESS, ETC.

ALL

DO NOT INSTALL

VARIABLES

OPTION

OBTAINED

UNPACK AND VERIFY ALL

COMPONENTS RECEIVED

APPLY

POWER,

SELECTED

VERIFY

SPC

BACK-

PLANE VOLTAGES, THEN
TURN POWER OFF

y
CONFIGURE

M3105

NORMALLY BR5 AT E121

CUSTOMER

VECTOR ADDRESS AT E60

REQUIREMENTS

DEVICE ADDRESS ATE173

;
CUT NPG JUMPER PINS

| CA1 & CB1 OF SELECTED
SPC BACKPLANE SLOT.
N

MKV84-0680

DHU11-4

DHU11 INSTALLATION

CONNECT BCOS5L CABLE
TO J1-J4 OF M3105

INSTALL M3105 MODULE,
.

PERFORM

CHECKS ON BACKPLANE,

APPLY

RESISTANCE

POWER

AND

VERIFY VOLTAGES.

Y
INSTALL

APPROPRIATE

DISTRIBUTION

PANEL

LOOPBACK CONNECTOR
MODE (H3029 OR H3277)

ol
e

EXECUTE
.

DIAGNOSTICS

(ONE PASS EACH)

PDP11

VAX

ZDHU?

EVDAH

ZDHV?

EVDAI

ZDHW?
ZDHX?

RESEAT/REPLACE BCO5L
CABLES

M3105

DIST.

PANEL

MKV84-0681

DHU11-5

DHU11 INSTALLATION

INSTALLING
IN A VAX
y

BUILD & EXECUTE DEX/11

EXERCISER WITH XDHU?
|

MODULE INCLUDED. ONE
PASS

.
-

PLACE BCO5L CABLES IN
NORMAL H3029 SOCKET

y
CONNECT TO EXTERNAL
EQUIPMENT.

INITIATE

CUSTOMER ACCEPTANCE

MKV84-0682

DHU11-6

DHU11 INSTALLATION
CZDH?? Troublesh ooting Flowchart
(

)

smrr
I,‘

CONNECT
DHU11 IN
CONFIG.A

(STEP A)| ALL LINES IN
FROM

SWAP CABLES
CONFIG. C.
REPEAT STEP A

LOW CHANS
O HIGH
YES

REPLAGE

EST

SWAP CABLES

M3105

CONFIG. D.

N DIVIDUAL

REPEAT STEP A

LINES

[YES

CONFIG. B. RUN

| N

|resTs 22 1O 26 ON |
LINES TO BE TESTED

REPLACE

REP

STAGGERED

LOOPBACK CONN

REPLACE
H325

[

SWAP CABLES
CONFIG. D.
REPEAT STEP A

ERF1

EPLACE ASSOCI-

TED DISTRIBUTION
ANEL

|
¥

EXTERNAL

HECH

LINE CHECKS

|
|

REPLACE

\
LOOPBACK CONN

CABLE ¥

l
Y

MODEM LOOPBACK
OR TERMINAL ECHQ

J1 OR J3 l

HIGH CHANS | |
47

OR 12-15
i

LOW CHANS

STAGGERED

- I

LOOPBACK

STAGGERED
LOOPBACK
CONNECTORS

CONNECTORS

-3

OR 12-15

20RJ4 |

CONFIGURATION A

J1 OR J3

OORS
10R9
20R10
30R 11

- l
J2 OR J4 |

40R 12

5O0R13
6OR 14
70R 15

CONFIGURATION D

CONFIGURATION B

MKVE4-0683

DHU11-7

DHU11 INSTALLATION

DHU11 Switch Settings

MSB

LSB

s [7]e

ot SWITCHES oe—d 1700

N
N
T

l E6O

NUMBER

SWITCH

112|3}4|5]6

OFF | OFF

NOTE:

OFF | OFF

SWITCH EBO-7 TO 10

OFF | OFF

MUST BE OFF

OFF

OFF | OFF

0 | O

\mmmmnsrmm

THE STATE OF TXIRQ.H WHICH
INDICATES:

OFF | OFF

OFF | OFF |OFF |OFF | OFF

OFF

1 TX INTERRUPT

300

OFF

OFF | OFF |OFF
OFF | OFF |OFF
OFF
OFF | OFF |OFF | OFF

0 RX INTERRUPT

VECTOR

N
o

310

320
330

340
350
360
370

400

OFF

‘

500

OFF | OFF

600

OFF |OFF | OFF

700

OFF = SWITCH OPEN TO PRODUCE A LOGICAL 1

M3105

MSB

LSB

17116 | 15 114 113 mI " IWI 2 I Bl 7i fil 5} 413121110
-

SWITCHES

clojojo
|

LE’N

NmBer | ']

SWITCH

23| 41516789

ADDRESS

OFF

760020

SWITCH £173-10
MUST BE OFF

oFF

OFF

OFF |OFF
OFF

OFF

INTERRUPT PRIORITY SWITCHES

BR LEVEL

DEVICE

STATE
OF SWITCHPACK E121

e BR SELECTION

STEAL
>

GRANT

SELECTION

sS4

OFF

S10

760100

160200

760300
760400

OFF

760500

OFF | OFF

760600

OFF | OFF | OFF

760700

OFF

761000

OFF

762000

OFF |OFF

763000

OFF
OFF

764000
770000

OFF = SWITCH OPEN TO RESPOND TO A LOGICAL 1

MKVBA-0E84

DHU11-8

DHU11 CABLING

DHU11 Cabling

DHUI11 normal anfid Test Connections from M3105 to H3029

BACK OF
H3029
DISTRIBUTION
PANEL

CHANNELS _
8 TO15

NOTE:

STAGGERED LOOPBACK CONNECTORS
ARE NOT POLARIZED
BCOS5L-xx CABLES CAN BE INSTALLED
EITHER WAY AROUND

H325
LINE LOOPBACK
TEST CONNECTOR

3 ,[ J4 CHANS 12-15
| U3

STAGGERED

CONNECTORS

—

CHANNELS
0707

CHANS 4-7

bonend

_ :__3

25-PIN D-TYPE
CONNECTORS

M3105

MODULE

— ;

LOOPBACK

CHANS 9-11

‘é
P
z

CHANS 0-3

)

NORMAL CONNECTION

wm))

TEST CONNECTION

FRONT OF H3029
DISTRIBUTION PANEL

MKVB4-0685

DHU11-9

DHU11 CABLING

DHUI11 Connections from M3‘105 to H3029 and H9544S)J

STAGGERED
LOOPBACK
CONNECTORS
*

CHANNELS

PIN A

8-15

BACK OF

H3029

RED LINE

TO A
RED LINE

TO A

‘

f—

H325

H-{J4

CHANS 12-15

D J3

CHANS 8-11

LINE LOOPBACK

TEST CONNECTOR

3
Q.

M3105

MODULE

[] J2 CHANS 4-7

‘

ANEL

(1J/[1
\

D J1

CONNECTOR

‘

[

VS g

PIN A

BERG

CONNECTOR

RED LINE

l[’J 3506000 oo /
i

CHANS 0-3

T0 A
]

b TYPE

¥y

[

‘

NORMAL CONNECTION

me) TEST CONNECTION

‘

N
NOTE:

CHANNELS

STAGGERED LOOPBACK CONNECTORS

0-7

ARE NOT POLARIZED
1/0 PANEL FRAME
TYPE H9544-SJ

BCOS5L-xx CABLES CAN BE INSTALLED
EITHER WAY AROUND

(FOR 19 in RACK)

MKVB4.0686

Pan

DHU11-10

DHU11 DIAGNOSTICS

DHU11 PDP11 Diagnostics

The DHU11 has a built in GO/NOGO self test. This test starts immediately at power up and after a bus
or device reset. Successful completion is indicated by the green LED going OFF/ON/OFF before coming
ON permanently. The Background Monitor Program carries out tests when the DHU11 is not engaged in
other tasks. It will report to the host processor and extinguish the green LED when a failure occurs.
The following diagnostic supervisor diagnostics form a Functional Verification Test. They must be
|

executed in alphabetic order.
ZDHU?
ZDHV?
ZDHW?
ZDHX?

After successful completion of the above tests, you should run the DECX/11 exerciser with module
XDHU? installed.

Running DHU11 Diagnostics — Table DHU-4 summarizes running PDP-11/DHU11 diagnostics.

DHUI11-11

PDP-11/DHU11 DIAGNOSTICS
Table DHU-4
PROMPT

DR>

Typical PDP-11/DHU11 Diagnostic Parameters

Operator must

respond

Parameters

by typing one or

more commands;

for example,

Description

DR> STA

CHANGE HW (L)? Y

The program will ask if any hardware changes are required
and the number of units to test.

# UNITS(D)? 1
UNIT 0

CSR ADDRESS: (0) 160460?
160340

INTERRUPT VECTOR ADDRESS:
(0) 3107 340

ACTIVE LINE BIT MAP: (0)

Enter the appropriate CSR address.

Enter the appropriate Vector address.

Enter an octal number with bits set

1777777

to indicate which lines to test.

INTERRUPT BR LEVEL: (0) 5?

Prompted by CZDHU? only.

TYPE OF LOOPBACK
(I=INTERNAL, 2+H3029 OR
H3277, 3=H325, 4=MODEM
5=KEYBOARD ECHO): (0) 2? *

Enter number to indicate the desired
loopback type.

CHANGE SW (Ly? v
REPORT UNIT NUMBER AS EACH
UNIT IS TESTED: (L) Y?
REPORT NUMBER OF BITS
TESTED IN DMA ADDR TEST:
(L) Y?
EXTENDED ERROR REPORTING:
(L) N?

NUMBER OF INDIVIDUAL DATA
ERRORS TO REPORT ON A
LINE: (D) 0?

NOTE

Not all diagnostics prompt for all the loopback
modes.

DHU11-12

VAX-11/DHU11 DIAGNOSTICS

Running VAX-11/DHU11 Diagnostics - Tables DHU-5 and DHU-6 summarize running VAX11/DHU11 diagnostics. There are two diagnostics available: EVDAH - online diagnostic (level 2R) and
EVDALI - standalone diagnostic (level 3). EVDAH is supported by online help facility EVDAH.HLP.
by online help facility EVDAI.HLP. VMS operating system must be version V4.0 or
EVDALI is supported
later and the Diagnostic Supervisor must be version V6.13 or later.
Table DHU-5

Typical VAX-11/DHU11 Program Operation

Command Function

Example

$ ALL TYAO
$ ALL TYAI
$ RUN E*SAA

ALLOCATE lines to be tested
EVDAH only
RUN the Diagnostic Supervisor

LOAD appropriate

DS> LOAD EVDAI or EVDAH

ATTACH the UNIBUS
interface to the
system bus

DS> ATT DW780 SBI DWO 3 4, or
DS> ATT DW750 CMI DWO, or
DS> ATT DW730 HUB DWO

ATTACH the device

DS> ATT DHUI11

SET appropriate

DS> SET EVENT FLAG(S) n,n,n

SET TRACE if you

DS> SET TRACE

START the program

DS> START

diagnostic

to the system. *

event flag(s)

desire a printout
of the tests as they
are executed

with the start

command
NOTE

This command now enters the hardware parameter

information for the device (refer to Table DHU-6
for Typical Hardware Parameters). When the various hardware parameters are qualified, the program
returns to the supervisor level of operation.

DHU11-13

VAX-11/DHU11 DIAGNOSTICS

Table DHU-6

Typical Hardware Parameters for EVDAH and EVDAI

Command/Parameter

Description

DS> ATT DHUI

Attach the DHU11

DEVICE LINK? DW0

The option is linked to the UBA

DEVICE NAME? TY
A

The option is named TYA

CSR? 760440

The CSR address is selected from floating UNIBUS address space

(range 760000-777776) (lowest 760440)
VECTOR? 300

Vector address if floating (range 300-776)

BR? 5

BR interrupt level is 5 (range 5-6)

DS> SEL TYA:

Select Unit Under Test

Table DHU-7

EVDAH Event Flags

Event

Test

Function

4 & 5

When set, the program is suspended after each channel is tested.

1to3

When clear, only the first DHU11 selected is tested.

When set, all DHUs tested in selected order.
4 &5

When clear, only the first DHU11 selected is tested.

When set, program is suspended before each module is tested.

DHU11-14

—

)

DHU11 MAINTENANCE AIDS

DHU11 Register Bit :Assignmems

TBUFFAD2 (BASE + 14)
15

TXMIT

ENABLE

DMA

TXMIT DMA ADDRESS
(BITS 16 - 21)

START

TBUFFCT (BASE + 16)

R/W
L

R N

]

DMA CHARACTER COUNT
|
(WHEN VALID, HOLDS No. OF CHARS. STILL TO BE SENT)

SET BY MASTER RESET

CLEARED BY MASTER RESET

CLEARED BY BINIT, POWER-UP OR POWER-DOWN
BUT NOT BY MASTER RESET
MKV84-0687

DHUI1-15

DHU11 MAINTENANCE AIDS

CSR (BASE)
15

R/H/v*d R

TRANSMIT
LINE NUMBER

m‘?"\éflfi&_,& TRANSMIT
BN

H/WJWW

TX
DIAGNOSTICS
ACTION | FAILURE

RW|RW|rRW|RW]

RCVE

L"mg :
(RXIE)'-

RCVE DATA

DMA ERROR

INDIRECT ADDRESS REG POINTER
(CHANNEL No.)

MASTER

AVAILABLE

RESET

RBUF (READ BASE + 2)

DATA

FRAMING

VALID

ERROR

RECEIVED

RECEIVE

CHARACTER

LINE NUMBER

qfl

DATASET

OVERRUN

PARITY

ERROR

(FROM HIGH BYTE
OF STAT)

STATUS FLAGS

AR
i

DIAGNOSTIC INFO

TXCHAR (WRITE BASE + 2)
15

TRANSMIT

DATA VALID

CHARACTER
MKV84-0688

DHU11-16

DHU11 MAINTENANCE AIDS
LPR (BASE + 4)
1

VvV

TRANSMIT

STOP

SPEED

PARITY

CODE
RECEIVE

EVEN

CODE

CHARACTER

LENGTH

PARITY

SPEED

DIAGNOSTIC

ENABLE

STAT (BASE + 6)
1

R i R

DSR

DCD
RI

(RING

ALWAYS 0
CTS

INDICATOR)

LNCTRL (BASE + 10)

R/W

R/WFR/W/IR/WH/WR/WMNR/WR/WWWR/W

RTS

DTR

MODE

FORCE.

TYPE

ENABLE

BREAK

XOFF

DMA

MAINTENANCE | OAUTO
LINK

ABORT

1AUTO

TBUFFAD1 (BASE + 12)

TXMIT DMA ADDRESS
(BITS
O - 15)
MKVB4-0689

DHU11-17

DHU11 MAINTENANCE AIDS
. J,y‘“%»

DHU11 Tech-Tip/FCO History

Table DHU-8

Tech
Tip No.

Speed
Bulletin
No.

Title

Table DHU-9

FCO No.

DHU11 Tech-Tip Index

Date

DHU11 FCO History

Reason

Quick Check

DHU11-18

DHV11 INSTALLATON

DHV11 OPTION
DHV11 General Description
The DHV11 option is an asynchronous multiplexer which provides eight full-duplex asynchronous serial
data channels on Q-bus systems.
DHV11 Features

Eight full-duplex asynchronous data channels

DMA or single character programmed transfers on transmit

256 entry FIFO buffer for received characters, dataset status changes, and diagnostic
information

RS-423-A/V.10/X.26 and RS-232-C/V.28 compatible

Full-duplex point-to-point or auto-answer dial-up

Programmable split speed per line

Total module throughput of 15000 characters per second

Automatic flow control of transmitted and received data

Qle6, Q18, and Q22 bus compatible

Self-test and background monitor diagnostics

Programmable test facilities

Single quad-height module (M3104)

All functions are programmable, except for device address and vector selection which are
implemented in switches
V

DVH11 Reference Documents

Refer to the following documents if the level of content in this section is insufficient.
e

DHVI1I Technical Manual - EK-DHV11-TM

[SI-11 Sysstems Service Manual - EK-LSIFS-SV

Terminals and Communications Handbook — EB-20752-20

DHV11-1

DHV11 INSTALLATION

Microcomputers and Memories — EB-20912-20

DHVII Print Set - MP01793

DHVII Maintenance Card - EK-DHV11-MC

DVHI11 Components
The DHV11-M module kit consists of an M3104, DHV11 module and a DHV 11 Technical Manual. Select
the necessary cabinet kit from Table DHV11-1.

Table DHV11-1

DHV11 Cabinet Kits

CONTENTS

BCO5L-01

BCO5L-1K

|
-

H3277

90-06021-01

90-06633-00

H3173-A

H325

74-286441

WIW
=
N
=

BCOS5L-2F

2
1

8
8
1

MKV84-1233

Device Placement
The DHV11 (M3104) can be mounted in any LSI-11 bus compatible backplane such as H9275. LSI-11
configurations apply and must be followed.
Power Requirements/LSI Bus Loading

Table DHV11-2

Power Requirements/LSI Bus Loading

Voltage Rating

Maximum

Minimum Backplane

Bus

Module

Volts

Amps

Voltage

Pin No.

M3104

4.300

+5.25

+4.75

AA2

2.9 AC

+12

0.475

+12.75

+11.25

AD2

1.0 DC

DHVI11-2

)

DHV11 INSTALLATION

DHV11 Installation Flowchart
(’

C START )

OBTAIN CUSTOMER

SPECIFIC INFORMATION
SYSTEM PLACEMENT

DEVICE PLACEMENT

PREINSTALLATION
CONSIDERATIONS

BUS LOADING
POWER
REQUIREMENTS

e CUSTOMER
APPLICATION
REQUIREMENTS:

I.LE. DEVICE ADDRESS,

ALL

VECTOR ADDRESS, ETC.

VARIABLES

OBTAINED

—"| DO NOT INSTALL OPTION
N

UNPACK AND VERIFY ALL

| COMPONENTS RECEIVED

Y
APPLY POWER, VERIFY

SELECTED BACKPLANE
SLOT VOLTAGES, THEN
TURN POWER OFF

CONFIGURE M3104

DEVICE ADDRESS E58 & E43

. MODULE FOR CUSTOMER ||

REQUIREMENTS

VECTOR ADDRESS E43
|

JUMPERS W1 & W2

O
MKV84-1234

DHVI1-3

DHV11 INSTALLATION

INSTALL M3104 MODULE
PERFORM RESISTANCE

CHECKS ON BACKPLANE
APPLY POWER AND

VERIFY VOLTAGES.

¢
INSTALL H3173-A
DISTRIBUTION PANELS

INSTALL 2 BCO5L-XX

CABLES BETWEEN
|

M3104-J19 J2 AND J5

| OF DISTRIBUTION PANELS

EXECUTE DIAGNOSTICS
CVDHA? CVDHB?, AND

CVDHC? OBTAIN 3 ERROR

FREE PASSES

RESEAT MODULE AND

CABLES OR CHANGE

MODULE, CABLES OR

DISTRIBUTION PANELS
A

MKV84-1235

DHV11-4

DHV11 INSTALLATION

BUILD & EXECUTE

DECX/11 EXERCISOR
WITH MODULE CXDHV?

CONNECT EXTERNAL

EQUIPMENT. INITIATE
CUSTOMER ACCEPTANCE

MKV84-1236

DHV11-5

DHV11 INSTALLATION
iy

M3104 Switchpack/Jumper Locations

LOW CHANNELS (0-3)

DIAGNOSTIC LED

Qo2
BERG CONNECTOR

DUART SC2681
(CHANNELS 2/3)

;

HIGH CHANNELS (4-7)

BERG CONNECTOR

DUART SC2681
(CHANNELS 0/1)

DUART SC2681
(CHANNELS 6/7)

PROC 2

8051

24MHz

3.6864

0sc

MHz QSC

DUART SC2681
(CHANNELS 4/5)

PROC 1

8051

M3104

ADDRESS

ADDRESS AND

SELECT

l Es8

VECTOR SELECT

H§

Ea3

]

cC3ac,
W2

BACKPLANE CONNECTORS
W1 - INTERRUPT ACK GRANT
W2 - DMA GRANT

IN FOR H9270 AND H8275 BACKPLANES
OUT FOR H9273 AND H9276 BACKPLANES

MKV84-1237

DHVI11-6

DHV11 INSTALLATION

DHV11 Device Addre:ss Selection
|

<— MSB__

16 15I*n4 13 12|11 10 gla 7|65
SWITCHES
'
1,"1 1

SWITCH

NUMBER

3|2 1|
:oloo

ES8 553 E58|E58 |E58 | E58|ES8| ES8| E43
7

5| 6

ADDRESS

ON
ON
ON | ON

17760020
17760040
17760060
17760100

17760200

ON | ON

17760300

17760400

|on

17760500

ON | ON

17760600

ON | ON | ON

17760700
17761000

ON|

17762000

ON | ON
'ON

o
0

DEVICE

LSB

17763000
17764000

17770000

ON|

ON = SWITCH CLOSED TO RESPOND TO A LOGICAL 1 ON THE BUS
MKV84-1238

DHV11-7

DHV11 INSTALLATION

DHV11 Vector Address Selection

MSB

LSB

15114 | 13 12|11

0 l 0

3 l 2

— SWITCHES ———————>l 1701

T
|
|

|
E43-2

SWITCH

NOT USED

NUMBER

E43|E43|E43E43
3|

E43| E43
7

VECTOR

ADDRESS

ON | ON

310

ON | ON

320

ON | ON

330

ON | ON

350

|ON | ON

ON | ON

360

JON | ON | ON

370

ON | ON

300

ON | ON

ON | ON | ON
ON | ON | ON

340

400

500

ON | ON

600

700

|ON | ON

ON = SWITCH CLOSED TO PRODUCE A LOGICAL 1T ON THE BUS
MKV84-1239

DHV11-8

DHV11 CABLING

; v h>

DHV11-9

1531 X2v8d001

3dAL G NId S¢

SHOLO3INNOD

|ea]

DHV11 DIAGNOSTICS

DHV11 Diagnostics
DVH11 Q-Bus Processor Family Diagnostics
The DHV1I has a built in GO/NOGO self test. This test starts immediately at power
up and after a bus
or device reset. Successful competion is indicated by the LED going OFF/ON/OFF
before coming ON
permanently.

The Background Monitor Program carries out tests when the DHV11 is not engaged in other
tasks. It will
report to the host processor and extinguish the LED when a failure occurs.

The following diagnostics form a Functional Verfication Test. They run under the diagnostic
supervisor.
They should be executed in alphabetical order.

CVDHA?
CVDHB?
CVDHC(C?
After successsful competion of the above tests, you should build and execute a DECX/11
exerciser with
module CXDHV?? installed.
|
‘
Running DHV11 Diagnostics — Table DHV11-3 summarizes running PDP-11/DH11
V

DHVI11-10

diagnostics.

DHV11 DIAGNOSTICS

PDP-11/DHV11 DMGNOSTICS
Table DHV11-3

Typical PDP-11/DHV11 Diagnostic Parameters

PROMPT DR> Operator must respond by typing one or more commands; for example,

STA/PASS:NNNN/TEST:NNNN

Description

Parameters

DA> STA

CHANGE HE (L) Y

The program will ask if any hardware changes are required

and the number of units to test.

#UNITS (D)? I
UNIT O

CSR ADDRESS: (0) ? 160460

Enter the appropriate CSR address.

160500

INTERRUPT VECTOR ADDRESS:

Enter the appropriate vector address.

(0) 300? 340

ACTIVE LINE BIT MAP: (0)
3777 377

TYPE OF LOOPBACK
(1=INTERNAL, 2=STAGGERED,
3=25 PIN CONNECTOR
4=MODEM): (0) 2?7

INTERRUPT BR LEVEL: (0)
47

Enter an octal number with bits set

to indicate which lines to test.
Bit 0 = line 0
Bit 1 = line 1

Enter number to indicate the desired

Loopback type.

This parameter not prompted by CVDHA?
Enter the number equal to the BR
level of the device.

CHANGE SW (L)? Y

REPORT UNIT NUMBER AS EACH
UNIT IS TESTED: (L) Y? —

NUMBER OF INDIVIDUAL DATA
ERROR TO REPORT ON A LINE:

(D) 07 —

DHVI11-11

DHV11 Register Bit Assignments
Register bit assignments for the DHV11 are shown in the following diagrams.

CLEARED BY MASTER RESET

SET BY MASTER RESET

—

CLEARED BY BINIT, POWER-UP OR POWER-DOWN
BUT NOT BY MASTER RESET

MKV84-1241

CSR (BASE)
15

H/R/WJ R]|

R|IR|R|RI|

R[]

R R/’WJR/W

RW |RW |RW | W

RCVE

DIAGNOSTICS

TRANSMIT

ACTION | FAILURE

L":&B

LINE NUMBER

m,fi"éfmgw TRANSMIT
'

INDIRECT ADDRESS REG POINTER

(RX!E)LE

RCVE DATA

DMA ERROR

(CHANNEL No.)

MASTER

AVAILABLE

RESET

MKV84-1242

RBUF (READ BASE + 2)

R1R]R]RIR|]R]R|R|R|]R]|]R|R|IRIRI|R

I|R

RECEIVED

DATA

VALID

FRAMING

ERROR

OVERRUN
ERROR

RECEIVE

LINE NUMBER

CHARACTER
qfl
DATA SET

PARITY

(FROM HIGH BYT

STATUS FLAGS OF STAT)

ERROR

c%n

DIAGNOSTIC INFO
MKV84-1243

DHV11-12

DHV11 MAINTENANCE AIDS

TXCHAR (WRITE BASE + 2)
15

WIW

llllillll
TRANSMIT

TRANSMIT

DATA VALID

CHARACTER

MKV84-1244

|
LPR (BASE
+ 4)

)

7
V
VvV
74
VA
rw lrw lew [rw [Rw [rRw | Rw [RW | RW | RW | RAW
/
/
A
A

TRANSMIT

STOP

SPEED

PARITY

CODE

ENABLE

CODE

CHARACTER

EVEN

RECEIVE

LENGTH

PARITY

SPEED

DIAGNOSTIC

MKWVv84-1245

STAT (BASE + 6)

| R

‘

(RING

8
R

ALWAYS 0

DCD

DSR

CTS

INDICATOR)
MKV84-1246

DHV11-13

DHV11 MAINTENANCE AIDS

TBUFFAD1 (BASE + 12)
15

R/WIR/W|RW|RW]R
| RW|RW|RW|RW
/W|R/
|RW|RW|RWI|
W|RW
RWI|RW
pa
2
pu
Z
pa
Z
Z
|
pa
Z
pa

MKV84-1248

TBUFFAD2 (BASE + 14)
15

'RW

RW |

‘

R'W | R/W R/W/R/WH/W R/W
/!

TXMIT

DMA

ENABLE

TXMIT DMA ADDRESS
(BITS 16 - 21)

START

MKV84-1249

LNCTRL (BASE + 10)
15

R/W

RTS

DTR

MAINTENANCE

OAUTO

MODE

LINK

FORCE.

TYPE

DMA
ABORT

BREAK

XOFF

R/W

ENABLE

1AUTO

MKV84-1247

TBUFFCT (BASE + 16)

RW | RrRW |RW|rRW|RW|RW|RWI|RWI|RW

DMA CHARACTER COUNT
(WHEN VALID, HOLDS No. OF CHARS. STILL TO BE SENT)

MKV84-1250

DHV11-14

DHV11 MAINTENANCE AIDS

DHV11 Tech-Tip/FCO History
Table DHV11-4

DHV11 Tech-Tip Index
Speed

Tech
Tip No.

Bulletin
No.

Title

Table DHV11-5

FCO No.

Date

DHV11 FCO History

Quick Check

Reason

DHVI11-15

Communications Options

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