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EK-KC780-TM-007

July 1984

131 pages

Original

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Document:	KC780 Family Remote Diagnosis Options Technical Manual
Order Number:	EK-KC780-TM
Revision:	007
Pages:	131
Original Filename:

OCR Text

EK-KC780-TM-007

KC780 Family
.Remote Diagnosis
Options
Technical Manual
KC780, KC782 and KC785

mamnama

EK-KC780-TM-007
JULY, 1984

KC780 FAMILY
REMOTE DIAGNOSIS OPTIONS
TECHNICAL MANUAL

KC780, KC782, and KC785

Digital Equipment Corporation

Maynard, Massachusetts

First Edition

October 1980

Second Edition
Third Edition

January 1982
October 1982

Fourth Edition November 1982
Fifth Edition August 1983
Sixth Edition March 1984
Seventh Edition June 1984
Copyright 0 1982,1983, and 1984
by Digital Equipment Corporation
All Rights Reserved
The reproduction of this material, in part or
whole,
is
strictly
prohibited.
For
copy
information, contact the Educational Services
Corporation,
Department,
Digital
Equipment
Maynard, Massachusetts 01754.
The information in this document is subject to
change
without
notice.
Digital
Equipment
Corporation assumes no responsibility for any
errors that may appear in this manual.
Printed in U.S.A.
The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts.
DEC
DEC US

DECnet
DECsystem-HJ

OMNIBUS
OS/8

DIGITAL

DECSYSTEM-20
DECwriter
DIBOL
EduSystern

PDT

IAS
MASSBUS

T"'\.; -- .; .... ~,

.UJ.'jJ.\-Q..L

PDP
UNIBUS
VAX

'r ",...-.

L.IVl.jV

r~,..,mrt

1'i:ll i:)

RSX
VMS

CONTENTS
CHAPTER 1

INTRODUCTION

1.1

Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1. 2

VAX-11/780 Series Systems Remote Diagnosis ••••••• 1-2

1. 3

DDC/RDC Host Computer System ••••••••••••••••••••• 1-4

1.4

DDC/RDC Operation Overview ••••••••••••••••••••••• 1-5

1. 5

M8017

1. 6

Modem Specifications ••••••••••••••••••••••••••••• 1-7

1. 7

Related Docrnnentation •••••••••••••••••••••••••••• 1-8

CHAPTER 2

FUNCTIONAL DESCRIPTION

2.1

Int rod uc t i on • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 2-1

2.2

The VAX-11/780 Series System Control Panel ••••••• 2-4

2.2.1

The Keyswitch •••••••••••••••••••••••••••••••••• 2-4

2.2.2

The REMOTE Indicator Light ••••••••••••••••••••• 2-5

2.3

Serial Line Interface •••••••••••••••••••••••••••• 2-5

2.3.1

M8017 Options •••••••••••••••••••••••••••••••••• 2-6

2.4

KC780 Family Remote Diagnosis Operation Sequence • 2-7

2.5

Console Terminal ••••••••••••••••••••••••••••••••• 2-8

CHAPTER 3

OPERATION

3.1

Introduction ••••••••••••••••••••••••••••••••••••• 3-1

3.2

A Typical Remote Diagnosis Session ••••••••••••••• 3-1

3.3

Intermittent Failure ••••••••••••••••••••••••••••• 3-6

3.4

Extended Monitoring •••••••••••••••••••••••••••••• 3-8

(-00,

-AA,

-YB)

1-1

Module Specifications •••••• 1-6

kc780-tc (007) 6/6/84
iii

CHAPTER 4

4.1
4.2
4.2.1
4.2.2

4.2.3
4.2.4
4.2.5

4.2.6
4.3

INSTALLATION

I n t rod uc t i o n • • . • • • • • • • • • • • • • • • • • • • • • • • • • • • . • • • . •
Site Preparation Requirements •••••••••••••••••••
System Configuration Package •.•••••••••••••••.
Mod em Location ••••••••••••••••••••••••••••••••
RJllC Standard Voice Jack (United States) •••••
Option Kits For Installation in Canada
Option Kits For Installation in Europe ••••••••
Site Management Guide •••••••••••••••••.•••••••
The KC780 Family Remote Diagnosis Kits ••••••••••

4-1
4-2
4-2
4-2
4-4
4-5

4-5
4-6
4-6

4.4

Opening the Kit ••••••••••••••••••••••••••••••• 4-7
Step-By-Step Installation Procedure ••••••••••••• 4-13

4.5

Mod em Test • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 4- 3 6

4.6

M8017 Off-Line Test
DDC/RDC System Test

4.3.1

4.7
4.8

4-37

.............................. 4-38

4.9

Customer Instruction ••••••••••••••••••••••••••••
Normal Operation Not Affected •••••••••••••••••
The User Guide ••••••••••••••••••••••••••••••••
The Site Management Guide •••••••••••••••••••••
DDC/RDC Demonstration Session •••••••••••••••••
Installation Acknowledgement Form ••••••••••••.•
Removing a KC780 Family Option ••••••••••••••••••

CHAPTER 5

TROUBLESHOOTING

5.1

Field Maintenance Philosophy ••••••••••••••••••••

5-1

5.2

M8 0 1 7 Te s t

......................................
Modem Signal Control in the LSI-11 ••••••••••••••

5- 1

Modem Failure •••••••••••••••••••••••••••••••••••
Failure Indications •••••••••••••••••••••••••••••
No System Identification Message ••••••••••••••
DDC/RDC Not Able to Connect •••••••••••••••••••

5-3
5-3
5-3
5-4

4.8.1
4.8.2

4.8.3
4.8.4
4.8.5

5.3
5.4
5.5
5.5.1
5.5.2

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iv

4-38
4-39
4-39
4-40
4-40
4-41
4-44

5-2

APPENDIX A GENERAL MODEM INFORMATION
A.1
A.2
A.3
A.4
A.4.2
A.4.3
A.5
A.6
A.7
A.8
A. 8. 1
A.8.2
A.8.2.1
A.8.2.2
A.8.2.3

Interface to Common Carrier Network •••...•••..•••
Modems - Canada
Modems - Europe •.•...••.••.•.•.•.•••••••...•••••
Modems - United States •.••.•••••.•.•.•••.••••..•
Racal Vadic Modem ............................ .
GDC Modem •••••••••••••••••••••••••••••••••••••
DIGITAL DF02/DF03 Modem ..•.••......•.•••..•.••
Modem Troubleshooting ...•..••••.•.•••.•••••.••.•
Modem Repair .•.••••.•...•...••.•.••••...•••.•.•.
FCC Regulations (USA) .•••.••••.•.•••.••••.•••..•
Modem Operation Characteristics •..•..••••••..••.
Definitions ••.....•••.••.....•••.•.•••••.•••••
Call Requirements •..•.•..•••.•...•••.••.••.•••
Automatic Call Answering •.•.•.•••••..••••••.
Establishing a Logical Connection
Call Termination (Abort Sequence)

APPENDIX B

WIRE WRAP WORKMANSHIP STANDARD

B. 1
B.2
B.3
B.4

Purpose
Definitions
Connections
Procedure

APPENDIX c

USER GUIDES

APPENDIX D

COMMUNICATIONS SWITCH

A. 4. 1

...........

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v

A-1
A-4
A-4
A-6
A-6
A-7
A-7
A-10
A-15
A-16
A-19
A-20
A-20
A-20
A-23
A-23

FIGURES
2-1

LSI-11 With KC780 Family Remote Diagnosis Option

3-1

The VAX-11/780 Series System Control Panel ••••••• 3-4

4:-1

KC 7 8 0 /KC 7 8 2 Ki t t i ng Sc heme • • • • • • • • • • • • • • • • • • • • • • • 4- 8

4-2

KC780 Family Option Kit Contents ••••••••••••••••• 4-9

4-3

LSI-11 Hardware Configuration ••••••••••••••••••• 4-14

4-4

Original LSI-11 Module Configurations ••••••••••• 4-15

4-5

LSI-11 Configurations With KC780 and KC782 •••••• 4-16

4-6

LSI-11 Configurations in 11/785 Systems ••••••••• 4-17

4-7

M8017-00, M8017-YB Jumper Configuration ••••••••• 4-23

4-8

M8017-AA Jumper Configuration ••••••••••••••••••• 4-24

4-9

M7944 Jumpers for KC780-DA or KC782-DA •••••••••• 4-25

4-10

M7264 to M7264-YA Rework •••••••••••••••••••••••• 4-31

4-11

KC780 and KC782 Installation Acknowledgement Form 4-42

4-12

KC785-BA Installation Acknowledgement Form •••••• 4-43

A-1

M8017

Interface • • • • • • • • • • • • • • • • •

A-2

Cabling Diagram •••••••••••••••••••••••••••••••••

A-3

Racal-Vadic Switch and Jumper Configuration •••••

A-8

A-4

GDC Jwnper and Switch Configuration •••••••••••••

A-9

A-5

DF02 Interface Board Jumpers for KC780-BA ••••••• A-11

A-6

DF02 Modem Board Jumpers for KC780-BA ••••••••••• A-12

A-7

DF03 Interface Board Option Jumpers ••••••••••••• A-13

A-8

DF03 Modem Board Option Jumpers ••••••••••••••••• A-14

A-9

Automatic Call Answering Sequence ••••••••••••••• A-25

A-10

Call Abort or Termination Sequence •••••••••••••• A-25

A-11

Call Initialization ••••••••••••••••••••••••••••• A-26

A-12

Call Abort or Termination Sequence •••••••••••••• A-27

B-1

Solderless Wrapped Connection ~n Wire Wrap Pin ••• B-1

B-2

Full Turn . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

B-3

Half Turn

B-4

Two Levels of Wire Wrap •••••••••••••••••••••••••• B-3

B-5

Defective Wire Wraps ••••••••••••••••••••••••••••• B-4

B-6

Loading the Wire Wrapping Kit •••••••••••••••••••• B-6

C-1

KC780 Family User Guide •••••••••••••••••••••••••• C-2

C-2

VAX-11/780 Remote Diagnosis Preparation •••••••••• C-4

D-1

Communications Switch

kc7802-tc (007)

(-00, -AA, -YB)

2-2

B-2

Docu~ent

6/6/84
vi

••••••••••••••••••• D-2

TABLES
4-1

Modem Specifications For RJllC ••••••••••••••••••

4-2

KC780/VAX-ll/780 Compatibility •••••••••••••••••• 4-12

4-3

M8017

5-1

Troubleshooting KC780 Family Options ••••••••••••

5-5

A-1

Modem Option States •••••••••••••••••••••••••••••

A-5

A-2

Signal Definitions •••••••••••••••••••••••••••••• A-21

kc7 8 0- tc ( 0 0 7)

4-5

(-00, -AA, and -YB) Jumper Configuration •• 4-20

6 /6 /8 4

vii

CHAPTER 1
INTRODUCTION
1. 1

SCOPE

This manual provides information for Digital Field Service
personnel who install, test, and maintain VAX-11/780 Series
systems remote diagnosis equipment. The material presented
supports the option maintenance philosophy which is module
swapping. It provides information needed to service the option at
that leve 1.
Chapter 1
INTRODUCTION - provides an overview of Digital
Remote Diagnosis and describes the relationships between the
customer, the Digital Remote Diagnosis Center (two acronyms are
used, DDC and RDC), and the local Digital Field Service office.
Chapter 2
FUNCTIONAL DESCRIPTION - describes the remote port
and the modem and their interfaces to the LSI-11, the DDC/RDC,
and to each other. Note that modem operation is covered in
greater detail in Appendix A.
describes typical operation and
Chapter 3
OPERATION operator involvement when remote diagnosis is used to resolve a
system problem. This chapter is primarily for use in customer
instruction following option installation.
Chapter 4
INSTALLATION provides information required for
site preparation and step-by-step instructions for installation
and testing of the option. It also includes the procedure for
removing the option.

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1-1

Chapter 5

TROUBLESHOOTING - describes troubleshooting of the
KC780 Family options and documents some known failure indications
and their causes.

Appendix A
GENERAL MODEM INFORMATION is a compilation of
modem information which applies to remote diagnosis. It also
includes excerpts of government regulations that users of remote
diagnosis equipment in the United States should be familiar with.
WIRE WRAP INSTRUCTIONS is a Digital Workmanship
Appendix B
Standard titled "Wire Wrap Instructions". It is reproduced in
this manual to remind or instruct the reader concerning the
correct installation of wire wrap jumpers on the M8017 module.
USER GUIDE DOCUMENTATION -

Appendix C

is a reproduction of

two "user guide" documents that are left on-site for customer
use. Those documents are included in this manual so that, if they
are not available otherwise,
purpose.

photocopies may be made

for

that

APPENDIX D

COMMUNICATIONS SWITCH -

is a reproduction of the

document
switch.

that

four-port

1.2

VAX-11/780 SERIES SYSTEMS REMOTE DIAGNOSIS

shipped

with

the

communications

Digital' s implementation of a system for providing a range of
customer services over the switched lines telephone network is
referred to as "REMOTE DIAGNOSIS". Some features of this system
are unique in the industry:
o

A telephone connection to the customer's computer is
used in the initial response to a request for repair
service. The Remote
a
reserved
connection into the customer's system, is dedicated
to that purpose.

kc780-cl(007)

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1-2

The

Digital

Remote

Diagnosis

computer can be used

Center

initiate

(DDC/RDC)

tests

and

host

control

them automatically. The application software uses
both

historical

information

about

the

customer's

system and dynamic test results to optimize the test
procedure.
o

The

DDC/RDC staff

includes response specialists and

experienced engineers who are especially trained to
monitor customer system operation and to diagnose
prob~ems

from their remote location.

The DDC/RDC and

the local Digital Field Service office work together
in response to a customer service request.

The KC780 Family options add
VAX-11/780

Series systems.

remote

diagnos~s

capability to

The option is logically inserted

between the console terminal and the processor. When the option
is installed, the console terminal I/O port is switch-controlled
so that it can function as a

remote diagnosis port.

port also provides DMA (Direct Memory Access)

The

remote

capability for use

by the DDC/RDC host computer.
ASCII
control

character
the

commands,

processor

entered
normal

the

operation.

console
The

terminal,

DDC/RDC

remote

operator uses the same commands when remote access is in effect.
A keyswitch on the processor control panel controls remote access
to the system. When the keyswitch is set to either REMOTE or
REMOTE DISABLE, all system control operations normally performed
at the local console terminal can be performed from the DDC/RDC
remote terminal.

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1-3

The DDC/RDC remote operator can:
o

Enter console

o
o
o

Enter and examine data in memory.
Examine the contents of registers.
Control, and communicate with, user and diagnostic

co~nands.

programs.

1.3

DDC/RDC HOST COMPUTER SYSTEM

The DDC/RDC host computer system is a major feature of Digital's
remote diagnosis service. The system stores statistical and other
historical

information about each customer system it services.

This data includes information required for testing, such as how
peripherals are configured, I/O addresses, memory size, hardware
and operating system revision status, and the names and phone
numbers of customer site personnel. When a DDC/RDC response
specialist enters a service request into the system, it uses that
data base and its auto-dial equipment to make a connection to the
customer's system and perform various tests. The host system
application
software
includes
programs
(scripting)
which
automatically control
customer's system.

the

running

diagnostics

the

During a service session, the host system reports on the results
of diagnostic tests
the status of those in
progress. It also provides the DDC/RDC remote operator with such
details as who the customer representative on site is and which
local Digital Field Service office has service responsibility. As
each service session is completed, the data base for that
customer system is updated. As a result, the DDC/RDC has a "case
history" which can be referenced for fault analysis or as an
indication of performance quality.

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1-4

1.4

DDC/RDC OPERATION OVERVIEW

Customers whose systems are equipped for

remote diagnosis enter

requests for service with the DDC/RDC.

The DDC/RDC

specialist

decides

test session or
local

either

start

re fer

the

cal 1 directly to

Digital Field Service office.

response

host-computer-controlled
the

responsible

If the problem is to be

handled by the DDC/RDC, the response specialist creates a repair
record on the host system, listing details about the problem. The
response

specialist

then

beg ins

the

and informs the local Digital

appropriate

Field

test

procedure

Service office that the

customer call was received and that testing is in progress.
A DDC/RDC engineer reviews test results and performs additional
host-computer-controlled
system through a
DDC/RDC

informs

tests

takes

remote console.
the

local

analysis of the problem.

direct

When testing

Digital

The local

Field

control

the

is complete,

the

Service

Digital

office

its

Field Service office

assumes responsibility for on-site repairs or service. Following
repair, the DDC/RDC may be asked to run a test to verify that the
problem has been resolved.
The final step in processing a customer service request through
the DDC/RDC is closing the report.

Information about the testing

procedures used and the specifics of the repair are added to the
historical records for that system.

This enables the DDC/RDC to

measure how well the procedures worked and provides a log of
service requests

for

each customer system.

Each time a

service

request is processed, the records of previous repair sessions is
available

the

response

specialist

most effective DDC/RDC action.

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1-5

help

selecting

the

1.5
The

M8017 (-00, -AA, -YB) MODULE SPECIFICATIONS
following

specifications are given

information only and

are subject to change.
Physical Characteristics
Dimensions:
M8017 Circuit Board

Board With Handle

Leng th:

21. 6 cm ( 8. 5 in)

22.8 cm ( 8. 9 in)

Height:

12. 7 cm (5.0 in)

13. 2 cm (5.2 in)

Width:

1. 3 cm (0. 5 in)

1. 3 cm ( 0. 5 in)

Cable Connection:

One 40-pin header connector

Module Type:
M8017-00

. . . . . . . . USED IN KC780-BA, -EA
KC782-AA

M8017-AA

. . . . . . . . USED IN KC780-BA, -DA, -EA
KC782-AA, -DA
KC785-BA, -DA

M8017-YB

. . . . . . . . USED IN KC780-DA
KC782-DA

M7944

MSVll-B • • • • USED IN KC780-DA
KC782-DA

M8044-EA

MSVll-DE

• • • USED IN KC780-DA
KC782-DA

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1-6

Electrical Characteristics
Power Specification:
Approximately 1.0 A @ +5 V +5%, 5.0 W
Approximately 150 mA@ +12 V ~5, 1.8 W
LSI-11 Bus Loading:

One bus load.

Environmental Characteristics
Temperature
Operating

5° C to 50° C (41° F to 122° F)

Not Operating

-40

C to 66

C (-40

F to 151

Humidity (Operating and Not Operating)
10% to 95%, maximum wet bulb 32° C
(90° F) and minimum dew point 2° C (35° F)
Altitude

1.6

Operating

2.4 km (8,000 ft)

Not Operating

9.1 km (30,000 ft)

MODEM SPECIFICATIONS

When a KC780 Family kit includes a modern made by a vendor,
manual for

that modern is shipped with it.

source of specification details for
Digital
are

part number

also

30-15949.

available

A-PS-3015949-0-0.

Appendix

information

that

from

purchase

is a

any modern identified by

Specifications
Digital

That manual

for

Purchase
this

modems

Specification,

manual

specification

vendor

provides

needed

for

all
field

installation and repair of these modems.
The model DF02 or DF03 modern, made by DIGITAL,

is also sent with

a manual,

DF03 User

DF02 User Guide,

EK-0DF02-UG,

EK-0DF03-UG which provides specifications for that modem.

kc780-cl(007)

4/26/84

1-7

Guide,

1.7

RELATED DOCUMENTATION

Information related to remote diagnosis can be found

in the

following documents:
o

KC780-B FIELD MAINTENANCE PRINT SET
MP-00704

KC780-D FIELD MAINTENANCE PRINT SET
MP-01082

KC780-E FIELD MAINTENANCE PRINT SET
MP-00744

KC782-A FIELD MAINTENANCE PRINT SET
MP-01610

KC782-D FIELD MAINTENANCE PRINT SET
MP-01611

KC785-B FIELD MAINTENANCE PRINT SET
MP-01888

KC785-D FIELD MAINTENANCE PRINT SET
MP-01889

KC780 CONSOLE INTERFACE TECHNICAL DESCRIPTION
EK-KC780-TD
Describes

the

VAX-11/780

Console

includes the M8017 remote port.

kc780-cl(007)

4/26/84

1-8

Subsystem

which

DLVll-E

AND DLVll-F

ASYNCHRONOUS

LINE

INTERFACE

USER'S

MANUAL
EK-DLVll-OP
Describes operation of the KC780 remote port.
o

VAX-11/780 DIAGNOSTIC SYSTEM USER'S GUIDE
EK-DS780-UG
Describes

the

organi za ti on

VAX-11/780

Diagnostic

resident

testing

and

System,
of

use

the

including

ROM

LSI-11

and

the

microdiagnostics, Direct I/O diagnostics, and Queue
I/O diagnostics for system testing.
o

VAX-11/780 SYSTEM MAINTENANCE GUIDE
EK-11/780-PG
Describes
procedures,

VAX-11/780

operating

troubleshooting,

and

maintenance

and diagnostics

single-source summary format.
o

KC785 TECHNICAL DESCRIPTION
EK-KC785-TD
Describes the KC785.

TERMINALS AND COMMUNICATIONS HANDBOOK
EB15486
Presents concepts of data communications.

Each KC780 Family kit that includes a vendor-manufactured
modem also includes a vendor-published manual that
describes installation and operation of that modem.

kc780-cl(007)

4/26/84

1-9

CHAPTER 2

FUNCTIONAL DESCRIPTION

2.1
The

INTRODUCTION
KC7812J

Family

interface

remote

installed as

diagnosis
a

remote

option

port

in the

serial

LSI-11

line

console

subsystem of VAX-11/780 Series systems. That port is connected to
an external modem

telephone

network.

customer

site

provide
The

remote access

telephone

dedicated

line

remote

through

the

public

that

port

the

diagnosis

and

not

intended for support of either voice communications or other
customer use of the remote port.
Figure

2-1

shows

the

VAX-11/780

Series

systems

with

the

function

LSill

KC7812J Family options added.
Two VAX-11-780 processors can be

interconnected

one VAX-11/782 system. When remote diagnosis is implemented,
identical

hardware

is added

internally to

each processor.

processors can be served by one modem when an
select switch (supplied in each KC782 kit)

Both

LQPX2 processor

is used. The KC7812J and

KC782 kitting scheme is explained in Paragraph 4.3.
Remote

access

the

VAX processor

enabled

disabled

according to the setting of the keyswitch on the front panel.

VAX-11/780 and VAX-11/782 only:
Software provided by the Remote Console diskette, RX4 in the
United

States and

Canada,

RX41

enable remote access.

kc7812J-c2 (007)

5/4/84

2-1

Europe,

is also

required

.----;.,..~ CLOCK CONTROL

1oaus ...~--......
MICROSEOUENCER

------......

VBUS

~---------------

CONSOLE/CPU
INTERFACE

r-------"'I
l 4K
;

CONTROL
PANEL

ROM

•r Q-BUS

''
LSl-11

RXV11
FLOPPY
CONTROLLER

DLV-11

RX01

TERMINAL

DLV-11
(OPT)

EIA CONNECTION
FOR REMOTE
TERMINAL

LSl-11 MEMORY
o BEFORE MAY 1984
VAX-11 /780 and V AX-11 /782 were shipped
with M7944 (MSV11-B) 4K with M7264 CPU
module.
o SINCE MAY 1984
All systems are shipped with M8044-EA (MSV11-DE)
48KB memory with M7264-Y A CPU module.

* MODEMS ARE INCLUDED IN KC780-BA and KC785-BA KITS ONLY
DIGITAL
REMOTE
DIAGNOSIS
CENTER
DDC/RDC

Figure 2-1

DATA
JACK

MODEM

LSI-11 With KC780 Family Remote Diagnosis Option

kc780-c2(007)

7/25/84

2-2

M8017-00 or M8017-AA
or M8017-YB ADDED
BY ALL OPTION KITS

KC782

V AX-11 /780 and V AX-11 /782 systems
shipped before MAY 1984 can have
KC780-DA or KC782-DA option kit
installed with either a second M7944 {4K)
or an M8044-EA (48KB) instead.

J
SECOND LSl-11
VAX-11/780

CONSOLE
SUBSYSTEM

M8017-00,-AA

KC780

PROCESSOR
SELECT

KC782

ONLY

kc780-c2(007)

7/25/84

2-3

KC780
OR.
KC785

IVAX-11/782 only:
IThe

LQPX2

processor

select

switch

determines

setting

which

~ssor is accessible. See also Appendix 6.

2.2

THE VAX-11/780 SERIES SYSTEM CONTROL PANEL

The LSI-11 monitors the state of switches on the VAX control
panel.

It reads the Miscellaneous Control Status

{MCS)

continually, first at power-up, and then each time it performs a
null loop. The control panel is shown in Figure 3-1.
2.2.l
The

The Keyswitch

five-position

keyswi tch,

located on

controls MCS register bits 0 and 1.

the

VAX control

panel,

The state of these bits

starts or controls specific LSI-11 operations as follows:
o

LOCAL
When the keyswitch is in LOCAL,
local

terminal

operator's

the console

terminal.

Both

the

LSI-11 enables the

terminal

Console

I/O

the

VMS

Program

I/O

modes are available. The remote port is disabled.
o

LOCAL DISABLE
When the

keyswitch

enables

the

terminal

terminal.

local

Console

I/O mode

LOCAL DISABLE,
as

the

is disabled.

referred to as "panel locked" mode.

VMS

the

LSI-11

operator's

This

often

The remote port is

disabled.
o

REMOTE
When the keyswitch is in REMOTE, the LSI-11 enables the
remote

port which,

turn,

the system. Both Console

enables

DDC/RDC access

I/O and Program I/O modes are

available to the DDC/RDC remote operator.

The local

console terminal is disabled as an initial condition but
it can be enabled by the DDC/RDC remote operator.
kc780-c2 (007)

5/4/84

2-4

REMOTE DISABLE
When the keyswitch is in REMOTE DISABLE,

the

LSI-ii

enables the remote port as the VMS operator's terminal.
DDC/RDC access to the system is limited to Program I/O
mode.

Console

enabled.

I/O mode

The local

terminal

disabled.
keyboard

Local

Copy

is disabled as an

initial condition but it can be enabled by the DDC/RDC
remote operator.
The Remote Indicator Light

2.2.2

When the keyswitch is set to either REMOTE or REMOTE DISABLE, the
red

REMOTE

indicator

light comes on.

This

indicates

the

on-site operator that the remote port is enabled and the DDC/RDC
has access to the system.

2.3
The

Serial Line Interface
LSI-11

has

two

includes an M7940
terminal.
M8017

terminal

module

for

ports.

The

basic

connection of

the

configuration
system

console.

In the installation of the KC780 Family option, an

(-00,

-AA,

or -YB)

module is added as the second,

remote

port.
VAX-11/780 and VAX-11/782 only:
The console diskette which
only the
option

local

console

added,

is shipped with

terminal

modified

port.

software

the

system controls

the

KC780

When

must

present

KC782

control

both the local and remote ports. This software is provided by the
Remote Console Diskette, RX4 in the United States and Canada or
RX41 in Europe, which is included in the option kit.
VAX-11/785 only:
The console diskette, RXlA, which is shipped with the VAX-11/785
system, controls the local console port. When the KC785 option is
added,

the

same console

diskette

controls

the

supports the United States, Canada and Europe.

kc780-c2(007)

5/4/84

2-5

remote

port

and

The

DLVll-E

and

DLVll-F

Asynchronous

Line

Interface

User's

Manual, EK-DLVll-OP! provides a complete technical description of
the M8017 module. All information needed for KC780 Family option
installation, such as M8017 jumper configuration, are provided in
this manual.

2.3.1

M8017 Options

Table 4-3 identifies the M8017 option jumpers by function and
shows their required inserted or removed states.
It also
identifies those jumpers which must be inserted or removed during
field installation. Figures 4-5 and 4-6 indicate jumper locations
on the boards and show their inserted or removed states for
KC780, KC782 and KC785 operation.
Appendix B, Wire Wrap Instructions, is included in this manual as
a reminder or to instruct concerning proper insertion of the
M8017 jumpers.

kc 7 a0 -c 2 <0 0 7 >

s/ 4 /8 4

2-6

2.4
A

KC780 FAMILY REMOTE DIAGNOSIS OPERATION SEQUENCE
typical

remote

diagnosis

session

exercises

the

following

functions:
NOTE
Refer to Appendix A (Table A-2) for more
information about the data communications
signals and
event sequences described
here.

When

the

keyswi tch

option asserts DTR

set

(Data

REMOTE,

Terminal

the

Ready)

KC780
at

the

Family
LSI-11

remote port which enables call answering. Note that in a
VAX-11/782 system,

the LQPX2 processor select switch

determines which processor is accessible.
2.

The

DDC/RDC

host

computer

calls

the

number

the

then asserts

DSR.

dedicated telephone line.
3.

The modem detects RI
(Data Set Ready)

(Ring

Indicator)

to indicate to the KC780 that the modem

has answered the call.
4.

The KC780 asserts RTS (Request To Send)

to the modem. The

modem responds by putting its answer mode carrier signal
on the line.
5.

The on-site modem receives the
modem at

the

DDC/RDC

(Carrier Detect).

and

then

carrier

responds
indicates

signal

from

the

by asserting

the option that

its carrier signal is on the line by asserting CTS (Clear
To Send) •

transfer

DDC/RDC

host

protocol

computer

messages
and

the

occurs

local

VAX.

between

the

A logical

connection is in effect when a valid protocol message has
been received from the DDC/RDC.

kc780-c2(007)

5/4/84

2-7

The DDC/RDC begins diagnostic testing of the customer's
system. The DDC/RDC may terminate the call, allow testing
to proceed, then call back to evaluate test results.

If the carrier from the modem at the DDC/RDC is lost
(e.g. they "hang up") , CD (Carrier Detect) is lost at the
on-site modem. This causes the option to begin its
(Data Terminal
termination sequence.
It clears DTR
Ready) , thus disabling access through the remote port.

2.5

When the termination sequence is completed, and if the
keyswitch is in REMOTE or REMOTE DISABLE, the KC780
asserts DTR (Data Terminal Ready) at the LSI-11 remote
port which enables call answering.

10.

When the operator sets the keyswi tch to LOCAL, remote
access to the system and call answering are disabled.
CONSOLE TERMINAL

Console Terminal operation is not affected by the presence of
remote diagnosis hardware. There is no conflict or interaction
between the KC780 Family option hardware and the setting of such
terminal features as baud rate, parity and data bits, etc.

kc780-c2 (-007)

5/4/84

2-8

CHAPTER 3
OPERATION

3.1

INTRODUCTION

The addrtion of a KC780 Family remote diagnosis option does not
affect normal VAX system operation. There are no changes to
normal operating procedures performed by the user. Havipg remote
diagnosis available does mean, however, that the user must be
prepared to work with the DDC/RDC in the event of a system
failure. A user who is familiar with remote diagnosis procedures
can help the DDC/RDC when they work together to restore the
system to correct operation. This chapter provides basic
information about those procedures which can be used for
instruction
of
customer
site
personnel
following
option
installation. The KC780 Family User Guide, Figure C-1, should be
used during that instruction.

3.2

A TYPICAL REMOTE DIAGNOSIS SESSION

A typical

remote diagnosis session involves the following
instructions and procedures. These are the steps which are
summarized in the KC780 Family User Guide. If the reported
failure can be isolated to a specific device, the session may be
limited to the steps required to test that device.
1. The system is running with the keyswitch in LOCAL or LOCAL
DISABLE when a hardware failure occurs.

kc780-c3(007)

7/26/84

3-1

2. The

on-site operator

request for service.

calls

the

DDC/RDC

and

enters

Reference to user guide information

may be helpful at this time:
a.

The KC780 Remote Diagnosis Option Family User
Guide
EK-KC780-UG

(Figure C-1)

Thi s i s an instr u ct ion a 1 doc um en t wh i ch wi 11 be
found
near
the
telephone,
attached
to
the
processor cabinet or

terminal or

highly visible location.
Site Management

in some other

It may be f q.ed in the

Guide as described below.

tells the user how to prepare the system for
remote diagnosis, how to call the DDC/RDC,
summarizes the remote diagnosis procedures.
b.

and

VAX 11/780 Remote Diagnosis Preparation
EK-11780-DC
(Figure C-2)
This document is also a user guide, published
especially for the Site Management Guide. The
Site Management Guide is a loose-leaf binder with
information
about
system
configuration,
status, maintenance history, etc. Within

FCO
the

binder there is a tab with the title "XI. Remote
Diagnostic
Console
(ROC)"
under
which
this
document should be filed.
c.

Miscellaneous Cards and Labels
To

provide

customers

with

information

about

calling the DDC/RDC, local DIGITAL offices may
attach cards or labels to processor cabinets,
supply cabinets, or in other obvious places for
that purpose. The information is usually limited
to a basic instruction to call
provides the telephone number.
3.

The

on-site

operator

with

the DDC/RDC and

remote

experience asks the DDC/RDC for instructions.

kc780-c3(007)

5/4/84

3-2

diagnosis

Any media with confidential or

valuable data

removed

from the system or otherwise protected.
5.

The

disk

mounted

volume,
on

the

which
load

includes

device

the

diagnostics,

put

on-line,

and

write

protected.

NOTE
The diagnostic library must be resident
on
a
disk
in
a
directory
named
[SYSMAINT]. This area may be on the
customer's system pack together with VMS
or it can be assembled on a separate
diagnostic pack or cartridge. If the
customer's system pack i$ nqt to be µ~~d
because of confidential or vital data,
then a separate Field Service VMS pack
should
be
prepared.
For
remote
diagnosis, it will be mounted and write
protected in place of the customer's
pack.

6. Each disk drive to be

scratch

pack

(must

tested
be

loaded with a

initialized

with

formatted
the

label

"SCRATCH") and put on-line, write enabled.
7. Each tape drive to be tested is loaded with a scratch tape
and put on-line, write enabled.
8. VAX-11/780 and VAX-11/782 only:
The Remote Console diskette RX4

(RX41 in Europe)

is loaded

and booted in RX01 drive 0.
a.

The

Remote Console diskette

in the

is MAINDEC ZZ-ESZBB

United States and Canada and ZZ-ESZFB in

Europe.
b.

Customers are

requested

Console diskette

for

all

having to reboot and, as a
machine state data.

kc780-c3(007)

5/4/84

3-3

use

only the

operations
result,

Remote

to avoid

losing the

Booting can only be done by turning power off at
the LSI-11,. then, with the diskette .loaded,
tu r n i n g po we r on •

·rhe AUTO RESTART switch on the VAX control panel is set to
the OFF position.
The control panel is shown in Figure
3-1.

10. VAX-11/782 only:
If the system is a VAX-11/782, the LQPX2 processor select
switch is set to select the processor which is to be
tested, A or B.
11. The keyswi tch is set to the REMOTE position (the REMOTE
indicator light will come on). Setting the keyswitch to
REMOTE transfers control of the system to the remote port
and remote access is enabled.
12. The modem
operation.

turned

on with switches set

for

LOCAL

OFF

ATTN

••••
-.,...-

AUTO
RESTART

RED

RUN

-.,-

GREEN

POWER
~

GREEN

REMOTE

-,-

normal

LOCAL
DISABLE

REMOTE
DISABLE

OFF

REMOTE

RED

INDICATOR LIGHTS

TWO
POSITION
ROCKER
SWITCH

FIVE
POSITION
KEYSWITCH

MOMENTARY
CONTACT
ROCKER
SWITCH

Tll:.OtU
M~t70

Figure 3-1

kc780-c3(007)

The VAX-11/780 Series System Control Panel

5/4/84

3-4

13. The DDC/RDC reviews the previous steps to determine that
the

system has been correctly

prepared

for

their

access

and testing.
14. The DDC/RDC calls the local

Digital

Field Service Branch

Office to report that their customer has entered a service
request and on-site service may be necessary.
15. The DDC/RDC takes control of the system. The option allows
the remote operator to boot the system, use Console I/O or
Program I/O modes, and enter the TALK state to communicate
with the on-site operator at the console terminal.
VAX-11/780 and VAX-11/782 only:
The DDC/RDC may ask that microdiagnostic diskettes be
loaded as testing progresses.
For example: Micro i l

(RX5) (RX4 2 in Europe)

t"1icro i2

(RX6) (RX43 in Europe)

Because

some

VAX-11/780

VAX-11/782

hardware

failures

may leave the system "hung", they may ask that the Remote
Console diskette,
booted.

Booting

RX4,

can

(RX41

only be

in Europe)

done

be loaded and

turning

the

LSI-11

DC-ON switch to OFF, then to ON.
VAX-11/785 only:
The DDC/RDC may ask that microdiagnostic diskettes be
loaded

testing

progresses.

For

example,

RX2A,

RX3A,

RX5, RX7, or RX8A.

16. The DDC/RDC host computer tests the system by running the
VAX

diagnostic

Direct

system,

including

Microdiagnostics,

I/O Diagnostics, and the Queue

necessary.

Terminal

communications

the

I/O Diagnostics as

are

echoed

the

console terminal, permitting the local operator to see the
type of testing being done and to monitor its progress.

kc780-c3(007)

5/4/84

3-5

1 7 • Ac t iv i t y i n the

Rx D and

Tx D ( Da ta

and

Data

Ou t )

indicators on the modem (if the modem is so equipped)
indicates DDC/RDC and system interaction as testing is in
progress.
In certain test conditions the DDC/RDC may start a test,
then "hang-up" as the test continues without their
attention. Another call is made later to evaluate test
results and continue the session. During the period of
testing without attention there is no modem activity.
DDC/RDC access to the system should not be interrupted
{which would occur if the keyswitch were turned away from
REMOTE or REMOTE ENABLE) unless there are instructions
from the DDC/RDC to do so.
18. The DDC/RDC reports test results and/or failure analysis
to the local Digital Field Service office. Control of the
system is returned to the on-site operator.
19. Following repair by local Field Service personnel, the
DDC/RDC may be asked to verify correct system operation.
20. When correct system operation has been verified,

system

control is returned to the on-site operator.

3.3

INTERMITTENT FAILURE

Al though the procedure described in Paragraph 3. 2 usually leads
to the solution of intermittent hardware failures, they may not
be detected by diagnostics. System software may exercise a
failing hardware component or may itself produce ambiguous error
indications. It is often difficult to re-create those indications
which, in turn, makes analysis more complex.

kc 7 a0 - c 3 ( 0 0 7 )

sI 4 /8 4

3-6

When diagnostic testing has been completed, it may be determined
that the reported system failure

is intermittent and/or involves

the operating system. The DDC/RDC can provide software expertise,
both

from

its own

staff

and

from other

DIGITAL

facilities.

Depending on the system software, and the software personnel who
are available to the DDC/RDC,

they work together to analyze and

solve the problem. Any procedure to isolate a system problem that
involves the customer's operating system is attempted only with
the customei's authorization.
If such a procedure is agreed upon, the DDC/RDC usually requests
that the user perform the following steps:
1.

Set the VAX keyswitch to LOCAL.

Remove scratch media and mount operating

system software

media.
3.

Boot the system.

the

system

VAX-11/7 82,

select switch to select the

set

the

LPQX2

processor which

processor
is

tested, A or B.
5.

Turn the keyswitch to REMOTE DISABLE. The REMOTE indicator
light

will. come

on.

Remote

access

the

system

enabled.

Give the DDC/RDC a system account number and password.

The DDC/RDC logs into the system. Terminal communications
are

echoed

the

local

console

terminal,

however,

the

keyboard is disabled to prevent the on-site operator from
interrupting the procedure.

kc780-c3(007)

5/4/84

3-7

When testing has been completed by the DDC/RDC, they log
off the system. The on-site operator takes control of the
system by turning the keyswitch to LOCAL.

The DDC/RDC calls the local Digital Field Service Office
to report test results.

10. Local

Field Service
procedure that best
schedule the service.

3.4

personnel
meets the

determine the
repair
customer's needs and

EXTENDED MONITORING

If test results indicate an intermittent failure condition, the
D DC/ R DC

can sch ed u 1 e ex tended test i ng and mo n i tor i ng o f system
operation. This procedure can include off-hours diagnostic runs
and other procedures designed to isolate such failures.

kc780-c3(007)

5/4/84

3-8

CHAPTER 4
INSTALLATION

4.1

INTRODUCTION

This chapter provides information needed by Digital Field Service
personnel for the following activities related to installation:
o Preparing the site.
o Ordering the dedicated telephone line (by the customer).
o Installing the option hardware (a step-by-step procedure).
o Connecting and testing the modem.
o Monitoring the initial DDC/RDC test of the system.
o Instructing customer site personnel.
The KC780 Family Remote Diagnosis option is installed only within
the terms and conditions of a maintenance contract. It remains the
property of Digital Equipment Corporation and is not for sale. If
the contract is terminated, the option will be removed. Paragraph
4.9 is a step-by-step procedure for removing the option.
The modem information provided in this chapter is limited to
specific details needed for site preparation and installation.
Appendix A includes general modem information that will be
especially useful for connecting to modems that are provided by
local telecommunications authorities.

kc780-c4(007)

7/26/84

4-1

4.2

SITE PREPARATION REQUIREMENTS

Because a KC780 Family kit is an add-on option to a VAX-11/780
Series system, only those prerequisites for installation of the
option itself are defined in this manual. These preparation steps
are important to successful installation and should be started as
soon as possible after it is known that the option is to be
installed.

4.2.1

System Configuration Package

Before installation, significant technical details about the
customer system must be sent to the DDC/RDC. These include such
items as ECO and FCO status, option configuration, power supplies
and controllers, cables,
baud rates, and the presence of
non-DIGITAL equipment connected to the system. These details are
readily available in the System Configuration Charts, EK-SMGDE-SC,
which are part of the Site Management Guide. They can be
photocopied and sent to the DDC/RDC.
When the DDC/RDC receives the system configuration package,
engineering personnel check it for technical details and missing
information; all details needed by the host computer must be
present. When the package is approved, the host computer data base
is updated, making remote diagnosis possible for that system.

4.2.2

Modem Location

It is recommended that locations for the modem, telephone company
equipment, and the connecting cables be determined before option
installation (see Appendix D). Telephone company personnel will
usually be able to install their equipment where the customer

kc780-c4(007)

7/26/84
4-2

wants

it.

dressing

A carefully planned
and

ensure

installation can

modem

visibility

facilitate

cable

operation

and

accessibility for maintenance. The customer may decide to install
a shelf, add a table, or otherwise make space available for that
hardware.
Some modem installation limitations are these:
a.

Visibility
When a DDC/RDC test session is in progress, activity in
the modem indicator lights is an indication of successful
host computer connection through the option remote port.
Al though such monitoring of a diagnostic session is not
necessary, it is recommended that the modem be installed
so

that

its

indicator

lights

are

visible

for

that

purpose.
b.

Access
The modem must

accessible

for

maintenance

purposes.

Many units have switches on the back which are used for
loopback

testing.

Al so,

maintenance

procedures

may

require that the digital I/O cable be.disconnected and a
test adapter attached.
c.

AC Power
An

receptacle,

external

the

VAX system,

must

provided for the modem. The modem may not be plugged into
the system power controller.
d.

Analog Interface Cable
The modem has an analog interface cable for connection to
the te 1 ephone network.
plugs

into an

RJllC

In the

United States,

standard voice

miniature four-pin connector.

kc780-c4(007)

5/29/84
4-3

this cable

jack which has a

Digital Interface Cable
The option kit includes a BC05D-25 or BC22F-25
long)

(25 feet

cable for connecting the modem to the remote port

at the VAX connector panel.
For KC782 only:
The KC782 option kit includes two BC22F-10

(10 feet long)

cables. A VAX-11/782 system may be connected to the LQPX2
processor

select

switch

and

modem

various

configurations using these cables in combination with the
BC05D-25 or BC22F-25 mentioned above.
In England, a BC99N cable

(which

diodes) must be installed to

includes protective

isolate the modem from the

option components. The BC05D-25, BC22F-25 or BC22F-10 may
be connected between the BC99N and the option hardware as
an ex tens ion.

4.2.3
The

RJllC Standard Voice Jack (United States)

30-15949,

DF02,

DF03

stand-alone modem,

included

the

option kit, must be connected to the telephone network through an
RJllC

data

jack

installed

the

telephone

company.

All

arrangements and costs for the installation and maintenance of the
RJllC

and

the

dedicated

line

are

t:he

responsibility

the

customer. The customer must provide the telephone company with the
following
(modem)

information about the data communications equipment

to be connected to the RJllC:

Manufacturer's name.

Model number.

Registration number.

Ringer equivalence.

kc 7 8 0- c 4 ( 0 0 7 )

6 /8 /8 4
4-4

When the District Console Allocation Coordinator (United States)
has determined which modem will be sent for the specific system,
those details are communicated to the local Digital Field Service
office. They can then give that information to the customer for
use in ordering the RJ11C installation. Table 4-1 provides those
details for the modems which are included in KC780 Family option
kits as of the publication date of this manual.

Table 4-1

4.2.4

Modem Specifications For RJ11C

Modem
Manufacturer

Model
Number

FCC Registration
Number

Ringer
Equivalence

GDC
VADIC
DIGITAL
DIGITAL

103A3
VA355P
DF02
DF03

AG697J-62418-DM-E
AJ496M-70263-DM-N
A0994Q-67693-DM-R
A0994Q-69391-DM-R

0.6, Type B
1 • 0' Type B
0.3, Type A
0.3, TYPE A

Option Kits For Installation in Canada

The KC780 Family option kits which are intended for installation
in Canada do not include a modem. The option must be connected
through a modem, Bell 103J or equivalent, installed by the
telephone company. All arrangements and costs for the installation
and
maintenance
of
telephone
company
equipment
are
the
responsibility of the customer.

4.2.5

Option Kits For Installation in the U.K. and Europe

Those KC780 Family kits which are intended for installation in
Europe do not include modems. The VAX LSI-11 remote port operates
in accordance with CCITT V.24, V.21, and V.28 recommendation. It
has B.P.O. approval in the U.K. and F.T.Z approval in Germany.
kc780-c4(007)

7/26/84
4-5

Appendix

especially

provides
useful

interface
for

maintenance in the U.K.

option

specifications
and

modem

will

installation

and

and Europe. The BC99N modem cable has

protective diodes which must be used
provided

which

in the option kit,

in the

but is added

u. K.;

in the U. K.

not

before the

kit is shipped to the customer site.
Site Management Guide

4.2.6

The Site Management Guide must be updated when remote diagnosis is
added

the

system.

The

Remote Diagnostic Console

binder

includes

divider

titled

"XI.

(RDC) ". A single sheet, "VAX-11/780

Remote Diagnosis Preparation", EK-11780-DC, should be filed behind
that divider. Figure C-2 is a copy of the document.

4.3

THE KC780 FAMILY REMOTE DIAGNOSIS KITS

Three KC780 option kit variations are available:
KC780-BA for installation in the United States.
KC780-DA for installation in the U.K. and Europe.
KC780-EA for installation in Canada.
Two KC782 option kit variations are available:
KC782-AA for installation in the United States and Canada.
KC782 DA for installation in the U.K. and Europe.
Two KC785 option kit variations are available:
KC785-BA for installation in the United States and Canada.
KC785-DA for installation in the U.K. and Europe.

kc 7 8 0 - c4 ( 0 0 7 )

6 /8 /8 4

4-6

For KC780 and KC782 only:
Figure

4-1

shows

the

KC780/KC782

option

kitting

includes a diagram of system interconnection.
provided

show the special

scheme

and

That figure

relationship between the KC780

and

KC78 2 kits.
Figure 4-2 identifies each kit component by description, part
number, and the quantity included in each kit.

NOTE
The

KC780

property
Corporation;

Family

option

Digital

DIGITAL asset tag

not

remains

the

Equipment
for

sale.

is attached to

A
the

BC03L-05 cable during installation. The
asset number on that tag

is used for

capital equipment inventory purposes.

4.3.1

Opening the Kit

Carefully open
components.

the

shipping

container

Check each component for

and

remove

the

option

possible damage.

If any

damage is present, it should be reported to the branch office
supervisor; if there are indications of shipping damage, that
should be reported to the responsible carrier also.

For KC780 and KC782 only:
Determine that the kit is complete by verifying it against Figure
4-2. Determine that the diagnostic diskette set is compatible with
the VAX-11/780 hardware/system revision level according
4-2.

to Table

The system identification message printed during console

program booting indicates the VMS version and reports any FLPA-WCS
mismatch.
kc780-c4(007)

6/8/84
4-7

DDC/RDC

TELEPHONE
NETWORK

MODEM

VAX-11/780

LQPX2
PROCESSOR SELECT SWITCH

Remote Diagnosis For Two
Independent VAX-11/780 Systems

VA X-11 /7 80 1 VAX-11/780
PROCESSOR A :
PROCESSOR B
1
Remote Diagnosis For Two
VAX-11-780'S Connected as
a VAX-11/782 System

FOR:

USE KIT:

CONTAINS:

An independent
VAX-11/780
system.

KC780-BA
KC780-DA
KC780-EA

All hardware required for one
VAX-11/780 system.

Processor A of
a VAX-11/782
system ..

KC780-BA
KC780-DA
KC780-EA

All hardware required for
VAX-11/780 Processor A in
a VAX-11/782 system.

Processor B of
a VAX-11/782
system.

KC782-AA

All hardware required for
VAX-11/780 Processor B when
Processor A has a KC780-BA or
KC780-EA.

Processor B of
of a VAX-11/782
system.

KC782-DA

All hardware required for
VAX-11/780 Processor B when
Processor A has a KC780-DA.

Figure 4-1

KC789 / KC782 Kitting Scheme

kc780-c4(007)

5/29/84
4-8

QUANTITY PER KIT
KC780
KC782
KC785
-DA -EA -AA -DA -BA -DA

DESCRIPTION

-BA

M8017-00 or
M8017-AA module

M8017-AA or
M801 7-YB module

M8017-AA module

M7944 module
( MSVll-B)
4K memory

. 0

OR
M8044-EA module
(MSVll-DE)
48KB Memory

*See Note on
Page 4-13.

DF 0 2 , DF 0 3 , or

30-15949
Stand-alone
modem

LQPX2
0
Processor Select
Switch

Figure 4-2

KC78i Family Option Kit Contents

kc780-c4 (007)

6/8/84
4-9

¥ ........... _ _ _
nmHJ'l'T'l'V
PF.R
.... _- K'T'T'

KC780
-DA -EA

KC782
-AA -DA

-·- -

KC785
-DA

DESCRIPTION

-BA

BC05D-25 or
BC22F-25
EIA Ex tension
Cable (25' long,

BC22F-25 only
EIA Extension
CABLE (2 5' long:

BC22F-l 0
0
EIA Extension
Cab 1 e ( l 0 ' 1 o ng '

BC03L-05
Filtered Cable
( 5 ' long)

74-21885
Adapter Plate

ZE016CY
Diagnostic Set

ZE022CY
Diagnostic Set

·~
·~

-BA

·~p
~

~
~
I .

Figure 4-2

KC780 Family Option Kit Contents (continued)

kc780-c4(007)

5/29/84
4-10

DESCRIPTION

.,..
,#19~~--

--~~~

~
a~nama

~BA

QUANTITY PER KIT
KC780
KC782
KC785
-DA -EA -AA -DA -BA -DA

. Mounting
Hardware
Package

H315
Modem Test
Adapter

····-

ASSET NO.

(

EQUIPMENT COA'°AATION

DIGITAL
Asset Tag

EN-0139?-07-N978 1
Installation
Ac knowledgemem t

EN-01780-07-N978 0
Installation
Acknowledgement

Figure 4-2

EK-KC780-'rM
Technical
Manual

EK-KC780-UG
User
Guide

KC780 Family Option Kit Contents (continued)

kc780-c4 (007)

5/29/84
4-11

-·

Table 4-2

KC789/VAX-ll/780 Compatibility (Does not apply to KC785)

RD Console
Diskette
Revision

v5.e0-c
V5.00-R

vs.00-c
V5.00·-R

VS.00-R

vs.00-c
VS.00-R

v5.e0-c
VS.00-R

v1.e0-c
V7.00-R

v1.e0-c
v1. crn-R

v1.e0-c
V7.00-'R

VMS
Release

1.5, 1.6

2.0

2.e, 2.1

2.e,2.1

2.e, 2.1,
2.2, 2.3

2.3, 2.4,
2.5

11/780
Hardware
Revision

03A

06, 86A

06, 96A

R, S, T,

R, S, T,
or U

3.e

4.e

or U

Hl,K

Hl, K

J 1, L

Jl, L

H3, M

23-021C6
23-022C6

23-021C6
23-£B9C6

23-021C6
2J-039C6

23-021C6
23-039C6
23-058C6

23-021C6
23-939C6
23-058C6

23-021C6
23-039C6
23-058C6

23-066C6
23-067C6
23-068C6

ZZ-EVNDX
Diagnostic
Revision

P or R

v5.e0~c

v,w,x,Y,z, v,w,x.Y,z
l.e

or 1.0

M8224 CS

REVISION
M8235 CS
Revision
and FPLA
Sockets
FPLA'S

REQUIRED

wcs
version and 0A-13
0c-11
0c-11
0D-12
0D-12
0D-12
0D-13
0E-10
Filename
WCS118.PAT WCS120.PAT WCS120.PAT WCS122.PAT WCS122.PAT WCS122.PAT WCS123.PAT WCSl.24.PAT.

SYS ID
Jumpers
Required ?

No**

Yes

* The -c suffix indicates CCITT operation; -R indicates U.S.A. operation.
** The System Identity Register jumpers are not needed for booting VMS release 1.5 or 1.6, howeverF
they are needed for release 1.6 to enable the error logger.

NOTE
For KC780-DA and KC782-DA in the U.K. and Europe
The kit you receive may not have an M7944 or M8044-EA module.
BEFORE MAY 1984
11 /780 systems had an M7944 4K memory module
in LS I-11 Slot 3, Row A/B. The KC7 80-DA and
KC782-DA kits added a second M7944 in Slot 3,
Row CID. (See Figures 4-4 and 4-5)
SINCE MAY 1984

All 11/780 family systems are being shipped
with an M8044-EA 48KB memory module in LSI-11
Slot 3, Row A/B instead of the M7944.

KC7S-O-DA and KC782-D-A optio-ns can be installed on systems which
have an M7944 in LSI-11 Slot 3, Row A/B, either by replacing it
with an M8044-EA or by adding the second M7944 (the module is to
be obtained locally if it is not provided in the kit). Systems
which have an M8044-EA in Slot 3, Row A/B do not require any
additional memory when. these options are added.

4.4

STEP-BY-STEP INSTALLATION PROCEDURE

This procedure provides instructions for the installation of KC780
Family option kits as follows:
o In the United States KC780-BA
o In Canada
KC780-EA
o In the U.K. & Europe KC780-DA

KC782-AA
KC782-AA
KC782-DA

KC785-BA
KC785-BA
KC785-DA

On the following pages, there is a formatted header block at the
right of each instruction step number • Each box in the header
block is reserved for a particular option kit variation. When the
kit number is printed in its box, the instruction step must be
performed. When the kit number box is blank, the step does not
apply. Figure 4-3 may be used for an overview of KC780 Family
option installation. The installation procedure references that
figure as a source of specific installation detail.

kc780-c4(007)

7/24/84
4-13

LOPX2
PROCESSOR SELECT SWITCH

'fO MODEM

TO VAX·11/780

PROCESSOR A -----~
BCOS0-25
OR
BC22F·25

TO VAX-11/780
PROCESSOR B

KC782 ONLY-

AC POWER

Figure 4-3

LSI-11 Hardware Configuration

kc780-c4(007)

5/29/84
4-14

ALSO SEE
FIGURE A2

ORIGINAL LSI-ii MODULE CONFIGURATIONS
ALL 11/780 and 11/782 SYSTEMS SHIPPED BEFORE MAY 1984

M7946

----l\!i\illllll!\ilf-------

M7940

M9400-YE

4
A

,-----,---------.---------.---------.---------.-----,
t

ALL 11/780, 11/782, and 11/785 SYSTEMS SHIPPED AFTER MAY 1984

-·--------------------------------------------M7940
2
2
M7946

~~]ltl•~~~~~~~

M9400-YE

3
4

----- ----------------------------------------D
c
B
A

-----,---------.--------- ---------·--------I

Figure 4-4

Original LSI-11 Module Configurations

kc780-c4(007)

7/26/84
4-15

LSI CONFIGURATIONS AFTER OPTION INSTALLATION
11/780 AND 11/782 SYSTEMS IN THE UNITED STATES AND CANADA

M7264 CPU MODULE
(M7264-YC with M8044-EA)

M7946

M7940

M7944 or M8044-EA

M8017-00, -AA

M9400-YE

4
I

---------,--------- ---------,--------I

11/780 AND 11/782 SYSTEMS IN THE UNITED KINGDOM AND EUROPE
(OPTION INSTALLED WITH M7944 4K MEMORY MODULE)

-----.--------------------------------------, :
M7264 CPU MODULE
-----.--------------------------------------2 :
M7946
M7940
-----.------------------------------------3
M7944
M7944
I

M9400-YE

M8017-AA, -YB

.----A
c
B
D
.----- ---------.--------- ---------.---------

3
4

I
I

11/780 AND 11/782 SYSTEMS IN THE UNITED KINGDOM AND EUROPE
(OPTION INSTALLED WITH M8044-EA 48KB MEMORY MODULE)
M7264-YC CPU MODULE

M7946

M8044-EA

.----'
I

M7940

M8017-AA or -YB

M9400-YE

,----- ---------,--------- ---------,--------I

Figure 4-5

LSI-11 Configurations With KC780 and KC782 Options

kc780-c4(007)

7/26/84
4-16

ORIGINAL LSI-11 MODULE CONFIGURATION
ALL 11/785 SYSTEMS

M7264-YC CPU MODULE
2

M7946

M7940

----------------------- ------------------- ----4
4
I

---------:--------- ---------.--------I

LSI CONFIGURATION AFTER OPTION INSTALLATION
ALL 11/785 SYSTEMS

------------------------------------------M7264-YC CPU MODULE
1

--~--

M7946

M7940

--------------------------------------------3
M8 0 4 4 -EA
\\\\\\\\ft\IQ\\f\tii.i\\\t
3
4

4
A

---------:--------- ---------:---------

Figure 4-6

LSI-11 Configurations In 11/785 Systems

kc780-c4(007)

7/3/84
4-17

STEP 1

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

Perform

the

following

I KC782 I KC782 I
I -AA I -DA I

preparatory steps

I KC785 I KC785 I
I -BA I -DA I

before

installation

begun:
o

Complete site preparation as described in Paragraph 4.2.

Examine kit contents as described in Paragraphs 4. 3 and
4.3.1.

Verify correct system operation.

STEP 2

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

Call the DDC/RDC and confirm that the System Configuration Package
( des c r i bed in Pa rag r a ph 4 • 2. 1 ) has been rec e iv e d and processed •
They want to know when an option installation is in progress and
if you will be requesting a system test (Paragraph 4.7) and/or a
demonstration for customer personnel (Paragraph 4.8).

kc780-c4(007)

5/29/84
4-18

STEP 3

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

Prepare

the M8017

(-00,

I KC782 I KC782 I
I -AA I -DA I

-AA,

-YB)

Table 4-3 and Figures 4-7 and 4-8.

module

for

I KC785 I KC785 I
I -BA I -DA I

installation using

In addition to verifying the

status of each jumper on the board, you must change the status of
some of the jumpers.

Those are indicated in Table 4-3

in the

column titled "JUMPER REMOVED OR INSERTED AT FIELD INSTALLATION".

STEP 4

I KC782 I
I -DA I

I KC780 I
I -DA I

Do this step if you will be installing an M7944 4K memory module.
(Do not do this step if you will be installing an M8044-EA module)
Prepare

the M7944

{MSVll-8)

for

installation as

4-9.

kc780-c4(007)

5/29/84
4-19

shown

in Figure

Table 4-3

MS017-00, MS017-AA, and MS017-YB Jumper Configurations

0
......J

JUMPER S1~ATE
FROM FAC1~0RY
IN
OUT

lSl
lSl

00
lSl

I
0

MS017-AA

M8017-YB
DESCRIPTION

x
x
x
x
x
x
x
x

These jwnpers are for
corresponding bits 3-12 of
the address word. Device
address 177S6X is set. Bits 0,
1, and 2 are hardwired on the
module to address the four
device registers as follows:
X=0 RCSR
X=4 XSCR
X=2 RBUF
X=6 XBUF

x
x
x
x
x
x

These jwnpers determine vector
generation during an interrupt.
An inserted jumper asserts the
corresponding address bit on
the LSI-11 bus. This jumper
configuration implements
interrupt vector address 3l~S
for receiver interrupts and
314 8 for tr an sm it t er inter r upt s •

FOR 300 BAUD ONLY
Remove R0
R0
Insert Rl
Rl
R2
Remove R2
R3

x
x
x

x
x
x
x

This configuration sets the
receiver and transmitter
for 300 baud (enables common
speed operation) •

Remove T0
Insert Tl

x
x
x

x
x
x
x

This configuration sets the
transmitter to 300 baud.
It i s r ed und ant to the "R"
_iwn..Q.ers.

x
x
x
x

This configuration sets the
receiver and tr an smi t ter
for 120:0 baud (enables common
speed ope r at i o n t •

A4
AS
A6

U1
N
\0
..........
00

MS017-00

x
x
x
x
x
x
x
x
x
x

......J

..........

JUMPER REMOVED
OR INSERTED
AT FIELD
INSTALLATION

A7
AS
A9
Al0

All
Al2
V3
V4

Insert V3

V6
V7

I
N
lSl

T0
Tl
T2
T3

Insert T3

FOR 1200 BAUD ONLY
R0
Remove R0
Rl
Remove R2
R2
R3

x
x

Table 4-3

7'"

...J

00
&

I
0
.i::.
&
&
...J

M8017-00, M8017-AA, and M8017-YB Jumper Conf igur at ions ( Continuedt

JUMPER STATE
FROM FACTORY
IN
OUT

JUMPER REMOVED
OR INSERTED
AT FIELD
INSTALLATION

FOR 1200 BAUD ONLY
T0
Remove T0
Tl
T2
Insert T3
T3

This configuration sets the
DF03 transmitter to 12HJ baud ..
It is redundant to the "R"·
j um_E_er s.

-E

1
2

x
x

Operation with 8 data bits
per character.

Programmable baud rate
function disabled •

x
x

Common speed operation
enabled.

BG
p

.i::.
I-'

DESCRIPTION

x
x
x
x
x
x
x

.i::.

M8917-YB

x
x
x
x
x
x
x

M8017-AA

x
x
x
x
x
x
x

'
'co

M8017-00

c
Cl

Remove BG

Disable Break Generation
Operation without parity
Does not apply
Parity type when "P" is removed.

x
x

Split speed operation
disabled.

Halt on framing error
disabled.

x
x

-B

Boot on framing error
disabled.

-FD

Data Terminal Ready is not
forced continuously true.

Table lt-3

0
-..J

JUMPER STATE
FROM FACTORY
- IN
OUT

M8017~00,

H8017-AA, and M8017-YB Jumper Configurations (Continued)

JUMPER REMOVED
OR INSERTED
AT FIELD
INSTALLATION

M8017-00

H8017-AA

M8017-YB
DESCRIPTION

I
0

..i:=

-FR

Request Ta Send is not
forced continuously true .

Request To Send is enabled

Force Busy is disabled.

M, M'I

Factory test junipers.
"M" does not exist on M8017-A.A.

.........
0
0
-..J

..._

!NIT
..i:=
I
I\)
I\)

M2, M3

Maintenance jumpers disabled

x
x

UART Clear signal enabled

DCOK

SD1
to
SD

SD1
to
DS

No change
required

x•

• FOR KC780-BA and KC780-EA
DATA SET REA~Y _IS DISABLED
SD1 to SD may be a jumper on
Side 1 or an intact etch between
those pins on Side 2.

SD1
to
SD

SD1
to
DS

Remove
SD1 to SD.
Insert
SD1 to DS

x•

• For KC780-DA,
KC785-BA, and KC785-DA.
DATA SET READY IS ENABLED
Change jumpers. Cut the etch on
side 2 between SD1 and SD if it
has not been cut.

MN-OMN-0

1-1-1-1-cca::cccc

JI:I:I:I:
Jl

FB •

FACTORY
USE
ONLY

~01 I-FR
~

FACTORY
USE
ONLY

BG
0

OOr-.tein'ltM

>>>>>>

-E o

:11::1
II: II I: ::I

l 0

2 0

Ell

~so

N-OCDa:>r-.u:un'ltM

<<<<t<(<(<(<(<(<(

-e/

'---___r_,---

MA-2789

Figure 4-7

M8017-00, M8017-YB

kc780-c4(007)

Jumper Configuration

5/29/84
4-23

::Sc1C: .

RS
R1

RO
TO
T1

T3
R2
R3

.ONIT)
(DCOK)

Figure 4-8

MA-8764

M8017-AA Jumper Configuration

kc780-c4 (007)

5/29/84
4-24

CCCJCJCJDCJCJ

==
===:::::J
== ====:J

c::c:
c c
L:::
c
- c:: £:::: -:...

l::=C
c

.. I

~ ~ 0~
9

~ ::J
--J

-·

~ ::J

-:J
::J
_:J

It: I

W4 W1

JUMPER

IN/OUT

W1
W2
W3
W4

IN
OUT
IN
IN

_:_j

-· =:i
-:J ::J

C:: L
r:_

---1

-:::: :::J

L-C
Ci:

.:: :::J
-

l::= L
L_

:::::J

FUNCTION

·1

MEMORY BANK SELECT 2

(400()().57776)
DISABLE BRPLY DURING REFRESH
MA-&613

Figure 4-9

M7944 Jumpers for KC780-DA or KC782-DA

kc780-c4 (007)

5/29/84

4-25

STEP 5

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

Refer to Figure 4-3. Check the universal I/O connector panel at
the lower right rear of the VAX to determine if the 25-pin EIA
connector on the BC03L-05 will mount directly to it. If not,
attach the 74-21885 Adapter Plate to the cable, using two 6-32 kep
nuts that are included in the mounting hardware package. On later
systems, the cable should be mounted instead to the CPU I/O panel
directly behind the LSI-11.

STEP 6

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

------- -------

I KC782 I KC782 I
I -AA I -DA I

------- -------

I KC785 I KC785 I
I -BA I -DA I

With two tie wraps, attach the DIGI'rAL Asset Tag to the BC03L-05
cable about four inches from the Berg connector.

STEP 7

I KC780 I
I -BA I

I KC785 I
I -BA I

Perform this step only if the modem in the kit is a model VA355P
made by Racal-Vadic. Determine that switches 6 and 7 on SW B are
in the c 1 o s e d ( oN ) po s i ti on ( Fig u re A- 3 ) • On most Ra ca 1-Va d i c
modems, these two switches will be in the open (OFF) position
incorrect! y.

kc780-c4(007)

5/29/84
4-26

The Racal-Vadic modem has a decal attached
of

the

unit.

provides

to the bottom surface

information about

switches for modem operation options.

setting

jumpers

and

The same information is in

the vendor-published manual which is shipped with the unit.

Since

tpe cover must be removed to check the status of the two switches
defined above,

it is recomnended that the status of other switch

settings and jumpers be verified at the same time. Except for

the

two switches,

the

all others should have

been set correrctl y at

factory.
Appendix

A of

this

manual

includes

additional

general

modem

i n f o rm at i on •

STEP 8

I KC780 I
I -BA I

I KC785 I
I -BA I

, I
I

is a model 103A3

Perform this step only if the modem

in the kit

made by General Data Comm Industries,

Inc. Remove the modem cover

and verify the status of option switches and jumpers. They should
have

been

set

correctly

vendor-published

manual

both

the

factory.

include

the

Figure

A-4

information

and

the

needed

check the states of those options.
Appendix

this

manual

includes

additional

information.

kc780-c4(007)

5/29/84
4-27

general

modem

CAUTION
FCC regulations prohibit the changing of
certain

data

customer

set

configurations

Installation

personnel.

solder straps or the cutting of printed
circuit clads by any but an authorized
GDC agent voids GDC's warranty on the
equipment, and is strictly prohibited.

STEP 9

I KC785 I
I -BA I

I KC780 I
I -BA I

Perform this step only if the modem in the kit is a model DF02 or
DF03 made by DIGITAL. The proper option states are preset at the
factory;

no on-site preparation is

installed is a DF03,
the

IN position

(for DF02)

required.

the model

to be

press the HS switch on the control panel to

to set 1200 baud operation.

and Figures A-7 and A-8

(for DF03)

Figures A-5 and A-6
and Table A-1 show

the functions and the required states of the option selection
jumpers. Both the DF02 or DF03 User Guide (shipped with the modern)
and Appendix A of this manual provide additional information.

kc780-c4(007)

5/29/84
4-28

STEP 10

I KC782 I KC782 I
I -AA I -DA I

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC785 I KC785 I
I -BA I -DA I

At this step, you will turn off system power and make the hardware
accessible for the installation:
a.

Open the front doors to provide access to the LSI-11 at
the lower left. Remove the left panel.

Turn off power to the LSI-11.

Turn the VAX keyswitch to OFF.

Turn the ac circuit breakers at the lower

left rear of

the cabinet to OFF.
e.

Release

the

quarter-turn

captive

retaining

screws

that

attach the blower plenum to the rear of the cabinet. Lift
up on both sides of the panel to remove it. This exposes
the rear of the LSI-11.
f.

Remove the bezel from the LSI-11 mounting box.

STEP 11

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

Disconnect the Berg connector/cable from the M7940 module in Slot
2, Row C/D of the LSI-11;

leave the module in place. Marking this

console terminal cable may avoid confusing it with the remote
cable which will be installed in Step 16.

kc780-c4(007)

5/29/84
4-29

The

following

steps

which

include

module

insertion

position

changes refer to the LSI-11.

STEP 12

I KC780 I
I -BA I

I KC780 I
I -EA I

I KC785 I KC785 I
I -BA I -DA I

I KC782 I
I -AA I

Move the M9400-YE module from Slot 3, Row C/D to Slot 4, Row C/D.

STEP 13

I KC780 I
I -BA I

I KC780 I
I -EA I

I KC782 I
I -AA I

Install the M8017-00 or -AA in Slot 3, Row C/D.

STEP 14

I KC780 I
I -DA I

I KC782 I
I -DA I

IF YOU WILL BE INSTALLING AN M7944
a. Move the M9400-YE module

(4K) MEMORY MODULE -

from Slot 3,

Row C/D to Slot 4,

A/B.
b. Install the M7944 module in Slot 3, Row C/D.
c. Install the M8017-AA or -YB in Slot 4, C/D.
kc780-c4(007)

5/29/84
4-30

Row

IF YOU WILL BE INSTALLING AN M8044-EA (48KB) MEMORY MODULE a. Move the M9400-YE module from Slot 3, Row C/D to Slot 4, Row
C/D.
b. Remove the M7944 module from Slot 3, Row A/B.
c. Install the M8044-EA in Slot 3, Row A/B.
d. Install the M8017-AA or -YB in Slot 3, Row C/D.
e. If the M7264 LSI-11 CPU module (Slot 1, Row A/B/C/D) is not a
-YC, rework it as follows:

~j~~
... ·
~'

~~'
--~~.

,~v·

~INSTALL A WIRE.WRAP
.JUMPER AT W4

--,

•

- ,~~~----

_=i

Figure 4-10

/REMOVE THE WIRE
WRAP JUMPER AT W2

M7264 to M7264-YC Rework
MA-0600-84

kc780-c4(007)

7/24/84

4-31

STEP 15

I KC780 I KC780 I KC780 I
I -BA I -DA i -EA I

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

Dress the BC03L-05 cable through the opening under the LSI-11
module

(near the power supply), out through the back, and to the

I/O connector

panel.

Plug

the Berg

connector

into

the M8017

module, making certain that the "THIS SIDE UP" label is away from
the side 1 surface of the board.

STEP 16

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

Connect the Berg connector

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

(which was disconnected in Step 11)

the M794B module in Slot 2, row C/D.

STEP 17

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC782 I KC782 I
I -AA I -DA I

Attach the BC03L-05 25 pin EIA connector
if needed)

I KC785 I KC785 I
I -BA I -DA I

(with the adapter plate

to the I/O connector panel at the lower right rear of

the VAX-11/780.

Four 6-32 kep nuts are

included

in the mounting

hardware kit for this purpose. On later systems, the cable should
be mounted

instead

the CPU

I/O

panel

LSI-11.

kc780-c4 (007)

5/9/84

4-32

directly behind

the

STEP 18

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

At this step all KC780 option hardware which mounts within the
processor cabinet has been installed.
a.

Install the blower plenum and fasten it.

b.
c.

Install the LSI-11 bezel.
Install the left panel.

STEP 19

I KC78e I KC780 I KC780 I
I -BA I -DA I -EA I

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

Put the modem in the location prepared for it (Appendix D may
apply). Note that there must be a separate ac power source for the
modem. Connecting the modem to the 869 Power Distribution Box is a
violation of U.L.

and other regulations and of system power

integrity. Connect the analog output cable from the modem into the
telephone data jack (e.g., RJllC in the United States).

kc780-c4 (007 j

5/9/84
4-33

STEP 20

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I
o

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

IF THE SYSTEM IS AN INDEPENDENT VAX-11/780:
Connect

the

BC05D-25

BC22F-25

cable

the

BC03L-05

connector that you mounted to the I/O connector panel in
Step 17. Run the BC05D-25 or BC22F-25 cable to the modem
and connect it there.

(For

installation in the u. K.

see

note which follows.)
o

IF THE SYSTEM IS A VAX-11/782:
Position the LQPX2 processor select switch on top of the
VAX-11/782. Connect a BC22F-10 cable from each VAX-11/780
I/O panel to the switch. Connect the BC05D-25 or BC22F-25
cable from the switch to the modem.

(For installation in

England, see note which follows.)

NOTE
For installation in the U.K., a BC99N cable
(which
has
protective
diodes)
must
be
installed to isolate any user device from
the telephone network. A BC99N cable is
added to each KC78e Family option kit in the
U.K. before it is shipped to the customer
site.
For a VAX-11/780 or 11/785 system, connect
the BC99N cable between the processor 1/0
panel
and
the
modem.
The
BC85D-25
or
BC22F-25 cable can be used as an extension
between the BC99N and the processor I/O
panel.
For a VAX-11/782 system, connect the BC99N
between the modem and the LPQX2 processor
seiect switch. The BCBSD-25 or BC22F-25
cable can be used as an extension between
the BC99N and the LPQX2 switch.

kc780-c4 (007)

5/9/84
4-34

STEP 21

I KC782 I KC782 I
I -AA I -DA I

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

this step,

can now

all

restore

option hardware
system power

and

I KC785 I KC785 I
I -BA I -DA I

installation
perform

is complete.

You

preliminary

system

lower

rear

testing:
a.

Turn the ac circuit breakers at

the

left

the cabinet to ON.
b.

Power up the LSI-11.

For KC780-DA in Europe, and for all

KC785's, the line time clock (LTC) switch must be on.
c.

For

VAX-11/780

diskette RX4

and

11/782:

Mount

the

Remote

Console

(RX41 in Europe)· in the RX01.

For VAX-11/785: Mount the System Console diskette RXlA in
the RX0 l.
d.

Power up the VAX system by turning

the keyswi tch to the

LOCAL position.
e.

Check the system identification message and verify that
the Console Version is as follows:
For

VAX-11/780

V7.00-R

(U.S.A.)

and

11/782:

or later.

V7.00-C

(CCITT))

Reference Table 4-3 for

compatibility details.
For VAX-11/785: V06-00-C or later.
f.

Examine memory location 0 to verify correct operation at
the local console terminal.

kc780-c4(007)

5/9/84
4-35

Boot VMS and log into the Field Service account (the BOOT
switch may

not

work

this

time

because

DEFBOO.CMD is

not set-up yet).
h.

Check the following in the [SYSMAINT] directory:
1.

CONFIG.COM is assembled correctly for this system.

DIAGBOOT.EXE is contiguous; if not, do the following:
a. $COPY/CONTIG DIAGBOOT.EXE DIAGBOOT.EXE
b. $PURGE [SYSMAINT]

See that all the necessary diagnostics are present
for the indicated release.
NOTE
If the customer's system pack is not to
be used for remote diagnosis because it
has confidential or vital data, then a
separate Field Service VMS pack should
be prepared. For remote diagnosis it
will be mounted (and write protected) in
place of the customer's pack.

4.5

MODEM TEST

Perform a preliminary test of the modem and dedicated telephone
line as follows:
a.

Turn the VAX system keyswitch to REMOTE.
For VAX-11/782: The LQPX2 processor select switch
enables remote access to either

kc780-c4(007)

7/26/84
4-36

If the modem is a DF03, make sure that the HS switch
on the control panel is in the IN position (1200
baud).·

Determine that the modem has ac power. Set the modem
switches for normal (not test) operation.

From another telephone, dial the number of the
dedicated telephone line. A ringing signal should be
heard, followed by a carrier signal which indicates
that the modem answered the call.

Hang-up.

If this test cannot be completed successfully, refer to Paragraph
A.5, Modem Troubleshooting.

4.6

M8017 OFF-LINE TEST

MAINDEC-11-DVDVA is 1used to test operation of the M8017-00, -AA,
or -YB module. The diagnostic is included on diskette ZJ-215-RY.
1.

Power down the system.
NOTE
Always
arrange
for
proper
system
shut-down
with
the
customer
before
beginning any troubleshooting procedure.

Disconnect the modem cable from the I/O connector at the
lower left rear of the VAX.
For VAX-11/782: The cable to be disconnected from the I/0
connector goes to the LQPX2 processor select switch.

kc780-c4(007)

7/26/84
4-37

Plug the H315 modem test adapter into the 1/0 connector
in place of the cable;

Power up the system; turn the keyswitch to LOCAL.

Load and run MAINDEC-11-DVDVA.

When the program has
complete.

Disconnect the H315 modem test adapter.
cable which you disconnected in Step 2.

4.7

run

successfully,

the

testing

Reconnect

the

DDC/RDC SYSTEM TEST

The DDC/RDC should be asked to check system operation following
option installation. Call the DDC/RDC and perform the procedure in
Paragraph 3.2 or in the KC780 and KC782 User Guide, Figure C-1,
"When Ma in tenanc e Diagnostics are to be run by the DDC/RDC". You
may want to ask site personnel to participate in the procedure.

4.8

CUSTOMER INSTRUCTION

Following installation of the KC780 option, site personnel must be
instructed in the use of the added remote diagnosis capability.
The instruction includes:
1.

Describe
the
added
remote
diagnosis
hardware
and
functions. Inform them that normal system operation is
unaffected and that their normal operating procedures are
not changed. (Paragraph 4.8.1)

kc780-c4(007)

7/26/84
4-38

Review the contents of the

User Guide

(Figure C-1)

and

see that they post or file it where it will be easy to
find. (Paragraph 4. 8. 2)
3.

Add
the
"VAX 11/780 Remote Diagnosis Preparation"
document (Figure C-2) to the Site Management Guide binder
behind the RDC tab. (Paragraph 4.8.3)
Assist them in calling the DDC/RDC and helping with a
remote diagnosis demonstration session. (Paragraph 4.8.4)

4.8.1

Normal Operation Not Affected

The addition of remote diagnosis hard-ware does not a£fe-ct system
operation. Site personnel will not be required to change their
normal day-to-day operating procedures. Keyswi tch positions OFF,
LOCAL, and LOCAL DISABLE will continue to be used exactly as
before.
Instruction in the use of the now-functional keyswitch positions
REMOTE and REMOTE DISABLE is required. The functions of these
keyswi tch positions are described in Paragraph 2. 2. 1. The only
visible hardware addition is the modem. Site personnel will have
little or no need to touch it, but they may want to monitor
activity in its indicator lights during remote system testing.

4.8.2

The User Guide

The Remote Diagnosis User Guide, Figure C-1, is a summary of site
personnel involvement in remote diagnosis procedures.

Review the

document with them, type in the DDC/RDC telephone number, then put
it where it will be easy to find when they need it (they may want
extra photocopies of it).

kc780-c4 (007)

5/9/84
4-39

The guide will help
diagnosis experience:

users

with

different

levels

remote

The user with little remote diagnosis experience or
knowledge can call the DDC/RDC and be led step-by-step
through the procedure.

The user can expect that the DDC/RDC wi 11 ask the basic
questions listed on Page 1, Steps 1 and 2, and be
prepared to respond.

The

user may read the

information on

Page

2 and

prepared for an easier interaction with DDC/RDC personnel
and the remote diagnosis procedure.

4.8.3

The Site Management Guide

A documer:it titled "VAX-11/7 8 0 Remote Diagnosis Preparation" is
reproduced in this manual as Figure C-2. It is another source of
information about working with the DDC/RDC and the user should be
shown where it is filed in the Site Management Guide.

4.8.4

DDC/RDC Demonstration Session

The most effective instruction, an on-line demonstration, should
be considered an important step in each KC780 Family option
installation. If site personnel were included in the initial
DDC/RDC system test (Paragraph 4.7), that may have provided enough
user
instruction.
If
not,
request
that
they
help
in
a
demonstration which you can schedule with the DDC/RDC.
Before a demonstration is started, see that site personnel
understand operation of front panel controls, how to find and
identify the diagnostic diskettes, and where to find information

kc780-c4(007)

5/9/84
4-40

about calling

the

DDC/RDC.

·rhey should

allowed

place

the

call to the DDC/RDC, load the diskettes, monitor the terminal, and
perform

other

procedure.

steps

which

are

part

the

remote

diagnosis

You may want to explain the activity in the modem

indicator lights,

but the modem does

not

need

user attention

except possibly to turn power on or off.
Site

personnel

who

have

received

this

instruction wi 11

confident about the remote diagnosis process. However, the DDC/RDC
expects calls from users with little experience and will provide
whatever help is needed.
of Figure C-1,

This is shown in the User Guide, Page 1

in which each of the

five steps of the procedure

begins "The DDC/RDC wi 11 • • • • "

Installation Acknowledgement Form

4.8.5
As

the

final

step

the

KC780

Family option

installation,

you

must have an authorized customer representative sign a receipt for
the hardware. The customer also acknowledges that the hardware is
the

property

Acknowledgement

Digital
Form,

Equipment

Corporation.

EN-01392-07-N978,

KC780-BA and KC782-AA option kit

for

Installation

included

that purpose

in the

each
United

States.
KI'r

FORM NUMBER

FIGURE NUMBER

KC780-BA

EN01392-07-N978

4-11

KC782-AA

EN 01392-07-N978

4-11

KC785-BA

EN01780-07-0000(7PJ)

4-12

Country-specific forms are used in countries other than the United
States.

The form is to be sent to the DDC/RDC after

filled-out and signed.

kc780-c4(007)

5/9/84
4-41

it has been

~o~oomo

DIGITAL EQUIPMENT CORPORAT~

VAX 11nso REMOTE DIAGNOSIS INSTALLATION ACKNOWLEDGEMENT

I, the undersigned, acknowlwdge receipt of Remote Diagnosis Kit (KC780),
Asset No ...............••......................•.•••.•.. for u1e on VAX 11 nSO,
Serial No ................................................•...•......•••••..•.......•...........

I recognize that this Remote Dllgnosis Kit 1lways remains the propeny of
Digital Equipment Corporation, 1nd egree not to remove or tamper with 1ny pan
of it, nor to disclose or make 1ny Plrt of it 1Vlilable to a third party.
I further acknowledge that I will 1llow Digital full and free 1ccess for the
purpose of removal of the Diagnosis Kit and restoration of the system to its
original condition if for any reason the Field Service Agreement should be
terminated.

Computer

Syst~

to t. IOCllt«l •t: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

Com1JM1Y------------------------------

Addr.SS---------------------------------------CtrY-------------- Sr«~---- Zip Ct>t# _ _ _ _ __
By Authorind
Repraent•riw ____________________ O.te _ _ _ _ _ __

Ntk-------------------------------------EN-01392·0'7·N9'78C'7251

Whi••-Cunonwr

Figure 4-11

kc780-c4(007)

C."9ry-arenef\

Ptna-D.D.C

KC780 and KC782 Installation Acknowledgement Form

5/15/84
4-42

mnmnomn
DIGITAL EQUIPMENT CORPORATION

111785 REMOTE DIAGNOSIS INSTALLATION ACKNOWLEDGEMENT
I. the undersigned. acknowledge receipt of Remote Diagnosis Kit (KC 785),
. Asset No.......................................................................................................................................... For use on 11n85
Serial No .......................................................................................................................................................................

1reeognizetnat-ffiis~emoteDiaghosisKif always remains-me property omrgrrotfqTJtpmentCOrporation.
and agree not to remove or tamper with any port of it. nor to disclose or make any port of it available to a third
party.
I further acknowledge that I will allow Digital full and free access for the purpose ot removal of the Diagnosis
Kit and restoration of the system to its original condition if for any reason the Field Service Agreement should be
terminated.

Computer System to be located a t : - - - - - - - - - - - - - - - - - - - - - - - CompanY-------------------------------~

Address --------------------------------~
C i t y - - - - - - - - - - - - - - - State - - - - - - - - Zip Code - - - - By Authorized Representltive - - - - - - - - - - - - - - - - - - D a t e - - - - - - -

Title

White -Customer Conary -Branch Pink -0.D.C.

Figure 4-12

KC785-BA Installation Acknowledgement Form

kc780-c4(007)

5/15/84
4-43

4.9

REMOVING A KC780 FAMILY OPTION

The following procedure must be performed when a KC780 Family
option is removed from a VAX system.

STEP 1

: KC780 : KC780 : KC780 I
-BA
-DA
-EA

: KC782 : KC782 :
-AA
-DA

I KC785 I KC785 :
-BA
-DA

At this step you will turn off power to the system and make the
hardware accessible for option removal:
a.

Open the front doors to provide access to the LSI-11 at
the lower left. Remove the left panel.

Power down the LSI-11.

Turn the VAX keyswitch to OFF.

Set the ac circuit breakers at the lower left rear of the
cabinet to OFF.

Release the quarter-turn captive retaining screws that
attach the blower plenum to the rear of the cabinet. Lift
up on both sides of the panel and remove it.

Remove the bezel assembly from the LSI-11 mounting box.

kc780-c4(007)

7/26/84
4-44

STEP 2

KC780

-BA

KC780 I KC780

-DA

-EA

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

Disconnect the Berg connector/cable from the M7940 module in Slot
2, Row C/D of the LSI-11; leave the module in place.

Note: Module position changes in the following steps are made
within the

LSI-11.

Refer to Figures

4-2,

4-3,

4-4,

4-5,

and

4-6

which shQW the various configurations of modules in the LSI-11 and
identify all KC780 family option components.

STEP 3

I
I

KC780

-BA

I
I

KC780 I KC780

-DA

-EA

I
I

KC782 I KC782 I

-AA

Disconnect the Berg connector

-DA

I
I

KC785 I KC785 I

-BA

(BC03L-05 cable)

M8 0 1 7 ( - 0 0 , -AA , o r -YB ) mod u 1 e fr om S 1 o t

STEP 4

I KC782 I
I -DA I

If there is an M7944 in Slot 3, Row C/D, remove it.

kc780-c4 (007)

5/15/84
4-45

-DA

and remove the

Row C/ D or

Row C/D.

I KC780 I
I -DA I

S1 o t

STEP 5
: KC780

: KC782 :

-DA

If the option was installed with an M8044-EA module (48KB memory)
added in Slot 3, Row A/B, remove the M8044-EA and replace it with
an M7944 module (4K). (An M7944 may not be available when you are
doing this; see note on page 4-13.)

STEP 6

: KC780

-DA

KC782

-DA

If you replaced an M8044-EA with an M7944 in Step 5, rework the
M7264-YC CPU module (Slot 1, Row A/B/C/D) as follows:
Remove the jumper (0 ohm resistor) at W9.
Remove the wire wrap jumper at W4.
Install a wire wrap jumper at W2.
Figure 4-10 shows the locations of these jumpers.

STEP 7

------------- ------KC780 l KC780 l KC780 l
-BA

-DA

-EA

------- ; ----·-------- ------KC782 I
; KC785 l KC785 l

l KC782

-AA

-DA

Move the M9400-YE Slot 4, Row A/B or Slot 4,
Row C/D.

kc780-c4(007)

7/24/84
4-46

-BA

-DA

STEP 8

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

Reconnect the Berg connector to the M7940 module

in slot

row

C/D (it was disconnected in Step 2).

STEP 9

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

Disconnect

the modem

cable

l KC782 I KC782 I
I -AA I -DA I

from

the

I KC785 I KC7~5 I
I -BA I -DA I

I/O connector

panel

the

lower left rear of the CPU cabinet.
For

VAX-11/7 82:

The

cable

disconnected

goes

the

LQPX2

processor select switch.

STEP 10

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

Remove the BC03L-05
it

present)

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

{with the 74-21885 adapter plate attached if

from

the

I/O connector

panel.

Pull

the

Berg

connector end of the BC03L-05 cable out of the LSI-11 and remove
the cable assembly.

kc780-c4(007)

5/15/84
4-47

STEP 11

I KC780 I
I -BA I

I KC785 I
I -BA I

If the modem was provided by DIGI'rAL, disconnect it from ac power.
a.

Disconnect the BC05D-25 cable from the modem.

STEP 12

I KC780 I KC780 I
I -DA I -EA I

Disconnect

the BC 050-2 5

I KC782 I KC782 I
I -AA I -DA I

(and/ or

the BC99N

I KC785 I
I -DA I

the

U. K.)

from

the

modem.

STEP 13

I KC782 I KC782 I
I -AA I -DA I

Remove the LQPX2 processor select switch and the three cables
attached to it.

kc780-c4 (007)

5/15/84
4-48

STEP 14

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC782 I KC782 I
I -AA I -DA I

I KC785 I KC785 I
I -BA I -DA I

At this step the KC780 option hardware has been removed.
a.

Install the blower plenum and fasten it

Install the LSI-11 bezel

Install the left panel

STEP 15

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

I KC785 I KC785 I
I -BA I -DA I

I KC782 I KC782 I
I -AA I -DA I

Power up the system and perform routine testing to verify that the
system is operating correctly.

STEP 16

I KC780 I KC780 I KC780 I
I -BA I -DA I -EA I

Verify
4-2.

that

you

have

all

option

components

Verify specifically that the

removed

according

DIGITAL Asset

Figure

Tag has been

(it is usually attached to the BC03L-05 cable during

installation).
returned

I KC785 I KC785 I
I -BA I -DA I

I KC782 I KC782 I
I -AA I -DA I

The kit components should be carefully packed and
the

local

Field

Service

office

Allocation Coordinator.

kc780-c4(007)

5/15/84
4-49

the

Di strict

CHAPTER 5

TROUBLESHOOTING

5.1

FIELD MAINTENANCE PHILOSOPHY

The KC780 Family option hardware includes either one module, or
two, connecting cables, and, in the United States, a modem. Since
field maintenance assumes module and modem swapping, servicing
the option i s not comp 1 e x • A1 so , s inc e the opt i on i s a remote
port connection within a system, it is unlikely that an option
component failure will affect system operation. Most failures
will be discovered when the DDC/RDC attempts a connection. As a
result, you will usually have their help when performing
corrective maintenance on the option.

5.2

M8017 TEST

After running LSI-11 basic CPU and memory diagnostics, KC780 or
KC782 troubleshooting should begin with the running of the M8017
Off-Line Diagnostic, MAINDEC-11-DVDVA as detailed in Paragraph
4.6. Failure of that test indicates a defective M8017 module:
a.

M8017 (-00 or -AA) LSI-11 Slot 3, Row CID in
KC780-BA, KC780-EA or KC782-AA in the United
States and Canada.

M8017 (-AA or -YB) in KC780-DA or KC782-DA in the
United Kingdom and Europe If the option was installed with an M7944 (4K
memory), the M8017 will be in Slot 4, Row C/D.

kc780-c5(007)

7/26/84

5-1

If the option was installed with an M8044-EA
(48KB memory), the M8017 will be in Slot 3,
Row CID
c.

M8017-AA LSI-11 Slot 3, Row CID in KC785.

You can troubleshoot the M8017 as follows:

NOTE
Always arrange for proper system shut-down
with the customer before beginning any
troubleshooting procedure.
CONTROL P
>>>HALT
>>>SET DEF OCTAL, WORD
>>>E/CONS 175610 •.••. This is the M8017 CSR. Refer to the
bit designation list which follows.
>>>SET DEF HEX.LONG •• Don't forget to do this when finished.
Bit
Bit
Bit
Bit
Bit
Bit
Bit
Bit

15
14
13
12
11
10

9
8

Dataset Interrupt
Ring Indicator
Clear To Send
Carrier Detect
Receiver Active
Dataset Ready *
Not Used
Not Used

Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0

Receiver Done
Receiver Interrupt Enable
Dataset Interrupt Enable
Not Used
Not Used
Request To Send
Data Terminal Ready
Not Used

*Used only with M8017-AA and M8017-YB in KC780-DA, KC782-DA,
and KC785-DA in the United Kingdom and Europe and KC785-BA in
the United States.

5.3

MODEM SIGNAL CONTROL IN THE LSI-11

All LSI-11's (in 111780's and 11/782's) shipped before April 1984
included a 4K RAM memory, M7944 module in Slot 3, Row A/B. Modem

kc780-c5(007)

7126184

5-2

signals were controlled by microcode on that module. The KC780-DA
and KC782-DA options added a second M7944 4K memory module in
Slot 3, Row CID, which extended modem signal control capability
as required for the European environment. Either of these modules
may be suspected when modem interface failure indications are
present.
The M7944 module has been replaced by an M8044-EA (48KB memory)
in Slot 3, Row A/Bin all LSI-11's (in 11/780's, 11/782's, and
11/785's) shipped since April 1984.

5.4

MODEM FAILURE

Information about modem operation, testing, options, repair, and
swapping can be found in Appendix A. Paragraph A.5, Modem
Troubleshooting, may be useful when modem faiiure indications are
present.

5.5

FAILURE INDICATIONS

Table 5-1 is a compilation of reported failure indications which
have been noted by the DDC/RDC.

5. 5. 1

No System Identification Message

If there is no console message at power-up or booting
a.

Check to see that the keyswitch is in LOCAL.

Check to see that

LSI-11

modules are

in the

correct slots (Figures 4-4, 4-5, and 4-6).
c.

kc780-c5(007)

Check to see that modules are seated and that
cable connectors are secure in their sockets.

7/26/84

5-3

5.5.2

DDC/RDC Not Able to Connect

a •

Check to see that the RX4

For KC780 or KC 7 8 2:
(RX41

Remote

Europe)

Console

diskette

console

diskette

booted in the LSI-11.
For

KC 785:

remote

required; load and boot Console Diskette RXlA.
b.

Check to see that the VAX keyswitch is in REMOTE.

Check

see

that

the modem

has

power

and

that

-AA,

-YB)

its cables are connected.
d.

Check
module

see

that

jumpers

(Paragraph

2. 3.1)

the
are

and

M8017

(-00,

configured
that the module

correctly
is

correct slot (Figures 4-4, 4-5, and 4-6).
e.

kc780-c5(007)

Perform the Modem Test, Paragraph 4.5.

5/30/84

5-4

in the

Table 5-1

Troubleshooting KC780 Family Options

Indication

Probable Cause

Comments

DDC/RDC not
able to
connect.

Wrong telephone
number.

Verify modem operation.
Dial the number of the
dedicated line.
You should hear a ring
signal, then
a carrier
signal.

DDC/RDC not
able to
connect.

Keyswitch not in
REMOTE.

DDC/RDC not
able to
connect.

Modem not set up
properly.

Reference Paragraph A.4
and the vendor published
operation manual.

DDC/RDC not
able to
connect.

Telephone line
noise, etc.

Advise telephone c-ompany ..

DDC/RDC not
able to enter
protocol.

Remote Console
diskette not
booted correctly.

RD diskette must be
booted by turning LSI-11
power OFF, then ON.

DDC/RDC not
able to enter
protocol.

M8017 not set up
correctly (or
defective).

Refer to Paragraph 2.3.1.

DDC/RDC not
able to enter
protocol.

Modem not set up
correctly (or
defective).

Vadic modem must have
Jumper B IN and switches
B6 and B7 ON; reference
Paragraph A.4.1.

Remote Access
not supported.

Incorrect diskette
in Drive 0 or not
booted properly.

For KC780 and KC782 only:
Diskette RX4 (RX41 in
Europe) must be mounted
on Drive 0 and booted by
a power-down, power-up
sequence; typing
"BOOT"
will not boot it.

Remote Access
not supported.

Failure on M8236
CIB module.

Most signals related to
remote logic are on CIB
board.

kc780-c5(007)

7/25/84

5-5

The M8017 Off-line test
is documented in
Paragraph 4.6.

APPENDIX A
GENERAL MODEM INFORMATION

A.l
All

INTERFACE TO COMMON CARRIER NETWORK
KC780 Family installations are dependent

telephone

lines

for their remote diagnosis functionality. There are many modem and
telephone

hardware

configurations,

all

controlled

by government

regulations which are not the same from country to country.
These remote diagnosis options are essentially identical. Because
additional modem control signals are required in Europe, there is
additional

logic in the KC780-DA and KC782-DA options. Paragraph

A.8 describes the operational characteristics required of modems
that are used with DIGITAL remote diagnosis devices.
Figure A-1 shows the option-to-modem interface and identifies
connector pin numbers and signal assignments.
Figure

A-2

shows

the

M8017-to-modem

configuration

used

for

the

KC780 Family options.
The M8017 remote port is connected to the modem through a BC03L-05
filtered cable (internal to the processor cabinet)
a BC05D-25 EIA

e~tension

in series with

cable.

When the option kit is installed in the U.K., use of the BC05D-25
EIA extension cable is optional.

It may be used to extend the

distance between the modem and the CPU an additional 25 feet.

kc780-aa(007)

6/1/84
A-1

M8017-00, M8017-AA,

XIU,

I
BIT•
·15

ft CSR
I

M8017-YB**

TTUllA
l.IVEL
CONVIRTllt

OATASIT
INTEftftU'1'
EIAITTL

CLEAR
TOSIND

CAIUllllR
DETECT

J1<

p (J1 ,.ERG

. TRA!m!l'T'TED DATA jftlDll!.K!

tl-t-<

DATA
10 SET READY

.u (

z (

I <<

22 (

OSET
INT ENI

SECONDARY ftECllVID DATA

IOATAllT ftEAOY ..

I <•( I
(

1a(

7 (

REQUEST
TOSENO

: SECOND••• Tll-rmo .,.••
REQUEST TO SEND

•

~ :'2"SIM?

DATA
, TERMINAL
RE.ADY

c
DDOATA
TERMINAL ftEADY

I·

~ : (
(

1•ECllVIODATA

AA
Al

SIA
CA

MODEM

M8017 (-00, -AA, -YB) Interface

7/26/84

I
'( I
~25 ( I
:zo( I
<3 ( I
~" (

lllTl!llLDCIC
llUU

NOTEWIRE ADD ON M8017-YB.
WIRE WRAP JUMPER ON M8017-AA

kc780-aa(007)

Sii

~llA

• CAILING CO,_ISTSOP A ICXDL41 "L.TEIH!O CAILi IN SilUES
WITH A ICtlN CAii.i !WHICH INCORllORATtS ,ROTICTIVI DIODES
A.NO IS USED ONLY IN TMI UNITIO KINGOOMI ANO/OR A llCOllD ·21
EXTENSION CAILI.
""AN M!D17 llCOMD AN Ml'!!01M'I WHEN DATA SIT READY IS
ADDED AS SHOWN.

Figure A-1

Cll

SECONDARY
3 TRANSMIT

RIUF

Gil

I (

l'ftOTICTIVI GROUND

I ( ( II
I
I

CLEAR TO SEND

WIRE ADD)
See NOTE
below

I (2

CARRIER DETECT

CINCH '1

"ING INDICATOR

T (

MODEM
EIA CllllCUIT
OISIGNATOR
IA

I
I
I
x ( I
I
.. ( I
~1
II
I

ft ING

CABLING*

A-2

VAX-11 /780 and VAX-11 !785

I
VAX-11 /780
OR
VAX-11/785

..--

I
I
I
1

OPTIONAL IN UNITED KINGDOM

LSl-11

BCOS0-25
OR BC22F-25

BC03L-05

BC99N

NLY

MODEM

RJ11C

DATA JACK

L----

REQUIRED IN UNITED KINGDOM

VAX-11/782
LOPX2
PROCESSOR C
A SWITCH
B

OPTIONAL IN UNITED KINGDOM

..--I
I __

I NOT SUPPL I ED

VAX-11/780
PROCESSOR A

VAX-11/780
PROCESSOR

--,

IN OPTION KIT
M_O_D_E_M_ _

LSl-11

BC03L-05

I _ _ _ _ JI

BC22F-10

I
I

DATA JACK

BC22F-10

MA-a.52-83

Figure A-2

Cabling Diagram

kc780-aa(~07)

6/1/84

A-3

GPO regulations

require

that a cable with

protective diodes

used to isolate the modem from the option connected to it. The
BC99N cable, which is used for this purpose in the U.K., is added
to the kit in the U.K. before it is shipped to the customer site.

A.2

MODEMS - CANADA

The kits for installation in Canada are identical to those for the
United States except that they do not include modems.

In Canada,

the customer must have the telephone company install a voice grade
telephone

line and

Bell

103AR modem

(or

equivalent).

All

arrangements and costs for the installation and maintenance of the
line and modem are the responsibility of 'the customer.
Table A-1 shows modem option states required for option operation.

A.3

MODEMS - EUROPE

European countries control the connection of data communications
equipment to their public telephone networks
Connection

approval

must

requested

in different ways.
through

their

telecommunications authorities such as the BPO in the U.K. and the
FTZ in Germany. The KC780 Family options operate in accordance
with CCITT .V24 and .V21 recommendations for interface sequences
and CC!TT .V28 recommendations for the electrical characteristics
of binary interfaces and has received both BPO and FTZ approval.

kc780-aa(007)

6/1/84
A-4

Table A-1

Modem Option States

PREDETERMINED STATE

DESCRIPTION

ON STATE

Originate/Answer

Au_tomatic::/Answer
Data Set Ready (CC) in Analo_g Loop

OFF STATE ~NOITION

x
x

Loss of Carrier Disconnect LCD)
Abort Tuner (ABT): Shall allow Data Set
Disconnects when handshaking does not take
place.
Delay Time:
17.0 Sec. minimum
30.0 Sec. maximum
. ·-

. -·

·-· -··---·--··-·---·--

---·--·· -·-·----·--··--···- ·-···

x
~
·--·· ..

-··-·

·-

··L=..·-=

----··--·-·.

Receive Space Disconnect (RSD)

~d Space Disconnect (Immediate)

Transmit Reversals in Manual Analog Loop

Answer Mode Indication (CE)

Early Data Set Ready (CC) Indication:
Shall cause Data Set Ready (CC) to be asserted
when the ••Moctem•• is connected to the switched
network rather than when the called· station's
carrier is detected.

x
x
x
x

Make Busy (CN Circuit)
Fail safe State of CN
Common Ringer
RTS Control

DTE Mode

DTR Control

DTE: Mod~

Analog Loop

DTE Mode

Disconnect (Unattended)

DTE Mode

Shall be

CB-CF (Com/Sep)

$eparate
Shall be

Grounding AA/AB COM/SEP

Common

Remote Telephone Operation (REM OPR)

Remote

kc780-aa(007)

6/1/84
A-5

When the kit does not include a modem, the modem must be provided
by

the

telecommunications authority of
m~de.

installation is
describes

the country

in which

This manual, and this appendix specifically,

the option-to-modem

interface

sufficient detail

permit the installation of any compatible modem.
Table A-1 shows the modem option states required for KC780 Family
option operation.

A.4

MODEMS - UNITED STATES

The

KC780-BA

and

KC785-BA option

kits,

for

installation

the

United States, include a DIGITAL DF03 stand-alone modem (or DF02,
or a vendor product, 30-15949). Stand-alone here means that it is
not designed to be installed in a rack or other chassis.
These modems are factory-configured for remote diagnosis operation
as

defined

Digital

Purchase

Table

A-1

shows

the modem

with

the

KC?80

family

Specification

option

options.

states

A-PS-3015949-0-0.

required

Paragraph A.8

for

provides

operation
a

signal

level description of remote diagnosis modem operation,

including

call

and

answering,

termination.

establishing

logical

call

In addition, each modem is shipped with a manual

which has specific operating detail.
A.4.3 provide

connection,

information which is

Paragraphs A.4.1, A.4.2, and
specific

to each of the four

types of modems.

A.4.1
The

RACAL VADIC MODEM

KC780-BA option

VA355P,

FCC

kit may

include

registration

number

Racal Vadic modem,

model

AJ496M-70263-DM-N.

Field

installation of this stand-alone unit includes a check to see that
option jumpers and switches are correctly configured, plugging its
cab 1 es

into a c

power and to the RJ 11 C data

the BC05D-25 digital I/O cable to it.

kc780-aa(007)

6/1/84
A-6

j a ck ,

and connect in g

Figure A-3 indicates the IN/OUT, ON/OFF states of the jumpers and
switches and shows their locations on the board. Most switches and
jumpers will be correct as tbey were set at the factory, however,
it is probable that switches B6 and B7 will be incorrectly set to
the OFF position.
A.4.2
The

GDC MODEM

KC780-BA

kit

may

include

GDC modem,

model

103A3,

FCC

registration number AG697J-62418-DM-E. Field installation of this
stand-alone unit includes a check to see that option jumpers and
switches

are

correctly configured,

plugging

its

cables

into

power and to the RJllC data jack, and connecting the BC05D-25
digital I/O cable to it.
Figure A-4 indicates the IN/OUT, ON/OFF states of the jumpers and
switches and shows their

locations

on the board.

All of the

jumpers and switches will probably be correct as they were set at
the factory.
A.4.3

DIGITAL DF02/DF03 MODEMS

The KC780-BA kit may include either a DF02 or DF03 modem
(made by DIGITAL);

The KC785-BA kit includes a DF03 modem.

These

modems have FCC registration numbers as follows: A0994Q-67693-DM-R
for

DF02

and

A0994Q-69391-DM-R

for

DF03.

Field

installation

these stand-alone units involve only plugging its cables into ac
power and to the RJllC data jack, and connecting the BC05D-25
digital

I/O cable into

it. For the DF03 modem,

the HS switch on

the control panel should be set to the IN position (1200 b/s). The
required option state jumpers are set at the factory;
preparation of the modems are required.

kc780-aa ( 007)

6/1/84
A-7

no on-site

RAYCAL·VADIC MODEM
OPTION
JUMPER

CONFIGURATION
OUT

JUMPER
IN

A
B

•

•
•

•
•
•

F
G
H

G H

L-'-

C.,,:t:.

ll l

-........
c;;;;...
L

lll.

,. . l LL

C·
IC
~
~

'f'

Figure A-3

Racal-Vadic Switch and Jumper Configuration

kc780-aa(007)

6/1/84

A-8

1!1 OUT

1!J IN

I- 0
CD (.J
c:( ..J.

Cl> Cl> ~ 0

(/) a: - (,J

r..~I~ ~IILfl~

YES~·~ J ~_:J
S3
CC OFF
IN

ANLP

I AUTO
ANS

REM

QPR
NORM

o~f-

etch cut
MA.2788

Figure A-4

GDC Jumper and Switch Configuration

kc780-aa(007)

6/1/84

A-9

Figures A-5 and A-6 indicate the locations of jumpers on the two
DF02 boards. The DF02 Modem User Guide, EK-0DF02-UG, which is
shipped with the modem, provides additional information about DF02
jumper configuration.
Figures A-7 and A-8 show locations of jumpers/switches on the two
DF03 boards. The DF03 Modem User Guide EK-0DF03-UG, provides
additional information about DF03 jumper configuration.

A.5

MODEM TROUBLESHOOTING

Instruction

manuals

which

are

included
with
modems
have
troubleshooting and testing information. These provide specific
instructions
for
setting-up
test
modes
and
explain
test
procedures. The information provided here is generally applicable
to any modem which is compatible with the KC780 family remote
diagnosis options.
The M8017 (-00, -AA, or -YB) may be tested off-line
MAINDEC-11-DVDVA which is resident on diskette ZJ-215-RY.

using

The basic modem test is:
o Call the number of the dedicated telephone line.
o Hear the ringing signal.
o Hear the carrier signal (indicating that the modem has
answered the call.
o Hang-up.

kc780-aa(007)

6/1/84
A-10

00
W8

W1
W2
W3
W4

W9
W10
W11
W12
W13
W14

ws
W6
W7

I §

R36 ~

;

I
I

----------..

TABLE OF OPTION JUMPER
OR SWITCH STATES
REQUIRED FOR KC780
FAMILY OPTIONS
(SET AT THE FACTORY)

D~D~ ~

our

IN
IN

Yv3
W4

OlJT

W7
\\5
YB

our

W12

OLJT
OLJT
OLJT
OUT

R36
DF02 Interface Board Jumpers for KC780-BA

6/4/84
A-11

OLJT

W13

kc780-aa(007)

our

W10
W11

W14

Figure A-5

our

'h5

D DD
D

D
D

~
W7

TABLE OF OPTION JUMPER
OR SWITCH STATES
REQUIRED FOR KC780
FAMILY OPTIONS
(SET AT THE FACTORY)

W1
W1.
W.3
W4
\W

W7
\W

Figure A-6

GROUND
-+fN
-+fN

GROUND
IN
IN
IN

DF02 Modem Board Jumpers for KC780-BA

kc780-aa(007)

6/4/84
A-12

TABLE OF OPTION JUMPER
OR SWITCH STATES
REQUIRED FOR KC780
FAMILY OPTIONS
(SET AT THE FACTORY)

W1
W12/S1-2
W13/S1-3
W14/S1-4
W15/S1-5
W16/S1-6
W17/S1-7
W21/S2-1
W22/S2-2
W23/S2-3
W24/S2-4
W25/S2-5
W26/S2-6
W27/S2-7

IN
OUT/OFF
OUT/OFF
IN/ON
OUT/OFF
OUT/OFF
IN/ON
IN/ON
OUT/OFF
OUT/OFF
OUT/OFF
IN/ON
OFF/OUT
OFF/OUT

uuuuuu
MIC-1599

Figure A-7

DF03 Interface Board Option Jumpers

kc780-aa ( 007)

6/4 /84

A-13

, MA-0448-83

TABLE OF OPTION JUMPER
OR SWITCH STATES
REQUIRED FOR KC780
FAMILY OPTIONS
(SET AT THE FACTORY)

D
000

00000

W11/S1-1
W12/S1-2
W13/S1-3
W14/S1-4
W15/S1-5
W16/S1-6
W17/S1-7
W18/S1-8
W21/S2-1
W22/S2-2
W23/S2-3
W24/S2-4
W25/S2-5
W26/S2-6
W27/S2-7
W28/S2-8
W29/S2-9
WJ0/52-10

OUT/OFF
OUT/OFF
, IN/ON
OUT/OFF
OUT/OFF
OUT/OFF
IN/ON
OUT/OFF
IN/ON
IN/ON
OUT/OFF
OUT/OFF
IN/ON
IN/ON
OUT/OFF
IN/ON
OUT/OFF
OUT/OFF

00 00000 00000

MA-°"9-83

Figure A-8

DF03 Modem Board Option Jumpers

kc7 8 0-aa ( 0 0 7)

6 /4 /8 4
A-14

indications:

This basic procedure may produce
a.

IE a busy signal is heard, incorrect jumper or switch
configuration of the M8017 or the modem are probable
causes. Step 3 of the Installation Procedure, Paragraph
4.4, provides detailed M8017 set-up information; this
appendix provides modem set-up information. If the modem
was not provided by DIGITAL, determine that the correct
type inodem was installed.

If the ringing signal continues and the modem does not
answer with a carrier tone, that could indicate a modem
wi th no po we r • It co ul d a l"so ind i cat e any fa i 1 u re o f the
VAX system to assert DTR to the modem or from having the
keyswi tch in a LOCAL instead of
DISABLE position.

A.6

REMOTE or

REMOTE

MODEM REPAIR

Modem repair is also subject to government regulation. A modem for
connection to

telephone

line may be

repaired only by the

manufacturer or an authorized agent. As a result, unit swapping is
routine when a modem which was provided by DIGITAL fails. Both
DIGITAL and customer personnel should know that the telephone
company must be notified if an installed modem is replaced by a
unit which has a different F.C.C. registration number (United
States). The Digital Field Service Representative will tell
customer personnel about any such change and provide then with the
information which they must have for the telephone company (Table
4-1) •

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A-15

A.7

FCC REGULATIONS (U.S.A.)

Vendor modems which are provided by DIGI'rAL come with a manual
that includes excerpts of government (F.C.C.) regulations which
apply to users of that equipment. Excerpts that apply to the users
of KC780 family options are provided in the following paragraphs.
The customer is responsible for corn pl iance with these regulations.
Site personnel should know that they may have to perform specified
actions in the event of modem or telephone line problems.

FCC RULES SECTION 68.104 - MEANS OF CONNECTION

" (a) General
Except for telephone company-provided ringers and except as
provided in subsection (c), all connections to the telephone
network shall be made through the standard plugs and standard
telephone company-provided jacks, or equivalent, described in
Subpart F., in such a manner as to allow for easy and
irrunediate disconnection of the terminal equipment. Standard
jacks shall be so arranged that, if the plug connected
thereto is withdrawn, no interference to the operation of
equipment at the customer's pr em is es which remains connected
to the telephone network, shall occur by reason of such
withdrawal.
(b)

Data Equipment
Where a customer desires to connect data equipment which has
been reg i st ere d in a cc o rd an c e w i th Sect i o n 6 8 • 3 0 8 ( a) (4 ) ( i )
or (ii), he shall notify the telephone company of each
telephone line to which he intends to connect such equipment.
The telephone company, after determining the attenuation of

kc780-aa(007)

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A-16

such telephone line between the interface and the telephone
company central off ice, will make such connections as are
necessary in each standard data jack which it will install,
so as to allow the maximum signal power delivered by such
data equipment to the telephone company central office to
reach but not exceed the maximum allowable signal power
permitted at the telephone company central office."
STANDARD DATA JACKS

The Standard Data Jacks with which the FCC-registered model ( s) of
the data set covered in the attached technical ~artual ~ill connect
are listed and briefly described in the manual.

FCC RULES SECTION 68.106 - NOTIFICATION TO TELEPHONE COMPANY

"Customers connecting terminal equipment to the telephone network
shall, before such connection is made, give notice to the
telephone company of the particular 1 ine ( s)
to which such
connection is to be made and shall provide to the telephone
company the F.C.C. Registration Number and the Ringer Equivalence
Number of the registered terminal equipment or
registered
protective circuitry."

FCC REGISTRATION NUMBER AND RINGER EQUIVALENCE NUMBER

The FCC Registration Number and Ringer Equivalence Number are
contained on the label on the registered equipment.

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A-17

FCC RULES SECTION 68.108 - INCIDENCE OF HARM

"Should
the

terminal

telephone

equipment cause harm
company

shall,

where

the

telephone

practicable,

network,

notify

the

customer that temporary discontinuance of service may be required;
however, where prior notice is not practicable, the telephone
company may
a c t i on

temporarily
r ea so n a b 1 e

discontinue

the

service

forthwith,

c i r c um s tan c es •

ca s e

such

s uc h

temporary discontinuance, the telephone company shall (1) promptly
notify the customer of such temporary discontinuance,

(2)

afford

the customer the opportunity to correct the situation which gave
rise to the temporary discontinuance, and
of his

(3)

inform the customer

right to bring a complaint to the Commission pursuant to

the procedures set out in Subpart E of this Part."

FCC RULES SECTION 68.110
COMPATABILITY OF THE TELEPHONE NETWORK AND TERMINAL EQUIPMENT
" ( b)

Changes

Telephone

Company

Facilities,

Equipment,

Operations or Procedures
The telephone company may make changes in its communications
facilities,

equipment,

operations or

action

reasonably

required

business

and

not

incompatible
facilities,

the

inconsistent

regulations in this Part.
expected

where such

operation

with

the

its

rules

and

If such changes can be reasonably

render

any

with

telephone

require

modification

procedures,

customer's

terminal

cmnpany
or

equipnent

communications

alteration

such

terminal equipment, or otherwise materially affect its use or
performance,

the customer shall be given adequate notice in

writing,

allow the

customer

uninterrupted service."

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A-18

opportunity

maintain

FCC RULES, SECTION 68.218 (b) - INSTRUCTION TO USER

"(2)

• registered terminal equip1nent or protective circuitry
may not be used with party lines or coin lines.

(3) •
when trouble is experienced the customer shall
disconnect the registered equipment from the telephone line
to determine if the registered equipment is malfunctioning
and.
if the registered equipment is determined to be
malfunctioning,
the
use
of
such
equipment
shall
be
discontinued until the problem has been corrected.
(4) • • • the user must give notice to the telephone company in
accordance with the requirements of Section 68.106."
A.8

MODEM OPERATION CHARACTERISTICS

The
foll~wing
paragraphs
define
the
required
functional
characteristics of modems used with DIGITAL remote diagnosis
devices. Those devices operate with the following characteristics:
o

300 baud serial data communication

1200 baud serial data communication

Asynchronous (start/stop) character framing (one start
bit, eight data bits, no parity bits, one stop bit)

o
o

Full duplex
Automatic answer

Automatic disconnect

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A-19

DEFINITIONS

A.8.1

Table A-2 defines the signals recognized by the remote diagnosis
device and modem. The table provides the signal name, the EIA
RS-232C circuit name, the CCI'rT V.24 circuit number, the position
on the 25-pin D-type connector, and the signal definition.

CALL REQUIREMENTS

A.8.2

The following paragraphs describe call answering and termination
event sequences.

A.8.2.1 AUTOMATIC CALL ANSWERING - Automatic call answering
enabled as follows (Figures A-9 and A-11):

Set

the

front-panel

keyswi tch

REMOTE/DISABLE position.

either

the

REMOTE

Console device signals DTR and RTS are

cleared and data line TxD is inhibited (held at binary 1). Modem
signals RI, DSR, CTS, and CD are cleared and data line RxD is
inhibited (held at binary 1). DTR is asserted by the console
device and call answering is enabled.
With DTR asserted, the modem attempts to answer the phone when it
detects at least one RI signal. When the phone is answered, the
modern asserts DSH. Once the console detects DSR, DTR may not be
deasscrted for five seconds, unless the console has also detected
CD. The assertion of DSR must be detected by the console device
within

seconds,

the

call

terminated.

Once

DSR

detected, the console asserts RTS.
The modem responds to the assertion of RTS by placing its carrier
signal or answer tone on the line. When a carrier signal is

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A-20

Table A-2

Signal Definitions

Name

RS-232C

V.24

25-pin

Definition

GND

, 01

Protective ground. This signal provides
a path between the remote diagnosis
device and the modem for the discharge
of spurious potentials, sue h as static
electricity.

GND

, 02

Signal ground. This signal provides a
reference level for the data and control
signals that follow in this table.

TxD

103

Transmit data (console to modem). This
signal contains the serial bit stream to
be sent from the console to the calling
s-ta-t i-o-n-.

RxD

104

·Receive Data (mod em to con so 1 e) • This
signal contains the serial bit stream
received by the modem from the calling
station.

RTS

105

CTS

106

Clear· to send (modem to console). This
signal is asserted by the modem to
indicate that it has successfully placed
its carrier signal on the line.

DSR

107

Data set ready (modem to console). This
signal indicates to the console that the
telephone
has
been
answered
(the
telephone is "off hook").

DTR

, 08/2

Data terminal ready (console to modem).
This signal is asserted by the console,
enabling telephone answering when a ring
occurs.

125

Ring indicator (mod em to console) . This
signal is monitored by the console to
determine when a ring occurs (when a DDC
host is attempting to call the system).

109

Carrier detect (modem to console). This
signal is asserted by the modem to
indicate that the calling station's
carrier signal has been detected.

kc780-aa (007)

6/5/84

Request to Send (console to modem). This
signal is asserted by the console
causing the carrier signal to be placed
on the line. Called the station's answer
mode carrier.

A-21

received from the calling station, the modem responds by asserting
CD and then asserting CTS (700 +300 ms later). Note, however, that
whenever CD is OFF, RxD is held at binary 1. The CD and CTS
signals must be detected by the console device within 20 seconds
of the assertion of RTS, or the call is terminated.
Once the console receives CD and CTS, a dialogue between the
console and calling station is initiated. This dialogue, or
logical connection, (described more fully in Paragraph A-5)
consists of a series of data transfers via RxD and TxD, and must
be successfully completed before further communications can
proceed.
TxD and RxD
conditions:

are

subject

the

following

restrictions

and

With signals RTS, CTS, DSR, and DTR asserted, data may be
transmitted on TxD until any of these four signals is deasserted.
While these signals are asserted, TxD is held at binary 1 when
there is no data transmission. If any of signals RTS, CTS, DSR, or
DTR are deasserted, data flow is inhibited and TxD is returned to
binary 1.
logical connection must be completed within 20 seconds of the
detection of DSR by the console device, or the call is terminated.
During a logical connection, loss of any one of signals DSR, CTS
or CD, or the receipt of a space condition (binary 0) on RxD for
more than one second will also cause call termination.
A

Once a logical connection is completed, call answering is
considered complete, a valid connection is in effect, and remote
diagnosis communications can proceed.
Note, that during call answering, but before logical connection,
loss of any one of signals DSR, CD, or CTS for more than 500 ms

kc7 8 0- aa

nm 7)

6 /5 /8 4
A-22

results in call termination. Signal glitches less than 500 ms are
ignored until a logical connection is established.
A.8.2.2

ESTABLISHING A LOGICAL CONNECTION

Once the modem asserts CD and CTS,

the console device recognizes

data received on RxD only if these data are in the form of a
protocol message. The protocol is a modified subset of the DIGITAL
Data
Communication
Protocol
(DDCMP)
for
ASCII
serial
communications. Successful receipt of a protocol message packet
from the calling station (the DDC/RDC) within 20 seconds after the
modem asserts DSR constitutes the establishment of a logical
connection.

A.8.2.3

CALL TERMINATION (ABORT SEQUENCE)

A call

is terminated during a call answering

routine

if key

signals are not detected within the established time frame, or are
lost. Call termination can also be accomplished by the DDC host
(by removing its carrier signal, which results in the loss of CD)
or by a local operator (setting the keyswitch to LOCAL) via the
console device. Refer to Figures A-10 and A-12.
Once

termination

initiated,

the

console device

inhibits the

data flow on TxD and deasserts DTR and RTS. A "Connection Lost"
message is printed on the system console terminal. The modem then
monitors the states of signals RI, DSR, CTS, CD, and RxD.

These

must be cleared to successfully complete the call termination.
DTR remains deasserted for two seconds following termination,
before being reasserted to again enable call answering. In
addition, during this two second delay period, RTS must remain
cleared and data cannot be placed on TxD. Note that DSR and CTS
must be cleared by the modem before DTR and RTS can be reasserted.

kc 7 8 0- aa ( 0 0 7 )

6 /5 /8 4
A-23

call

keyswitch

termination
in

the

was

initiated

by placing

the

VAX system

LOCAL

position,

DTR

RTS

are

deasserted. Call answering

and

forced

is not enabled until

the switch is

returned to the RE.MOTE/DISABLE or RE1vtOTE position,

where DTR can

be asserted.

kc 7 8 0- aa ( 0 0 7 )

6 /5 /8 4

A-24

-- - ____n~--~n~------------------------- I
-1
______________________
-DTR

CSR

~i-------------------------------

RTS

I MAX20S.

....,__
co

MAX 20 S.

..._

CTS

MAX 205.

RxO

VALID P.ROTOCOL
MESSAGE

TxO

Figure A-9

Automatic Call Answering Sequence

__,.

.._,__

CTR
CSR

JlJl.Jl.

---------

I MIN 2 s. I

~Z~-------

Ri- ·---2?Z~~----

--- RTS

-- ~Z~---
-- ~~Z~~--co

CTS

-- ~Z~------ ~~------------------RxO

TxO

Figure A-10

Call Abort or Termination Sequence

{* Both Figure A-9 and A-10 assume KC780 family option on the
left, modem on the right;

the VAX system keyswitch is assumed to

be in a REMOTE position.)

kc780-aa {007)

6/5/84
A-25

DTRIS
ASSERTCO

SET TIMER FOR
20 SECONDS

SET TIMER FOR
20SECONDS

ASSERT
ATS

VALID
CONNECTION
ESTABLISHED

Figure A-11

Call Initialization *

(* It is assumed, on entry, that the VAX system keyswitch is in a
REMOTE position and that RI, DSR, CD, CTS, and RxD are clear.)

kc 7 8 0- a a ( 0 0 7 )

6 /5 /8 4
A-26

CALL
TERMINATION
INITIATED

INHIBIT
TxO

WAIT

2 SECONDS

OE-ASSERT
DTR AND ATS

ASSERT

DTR

PRINT
"' CONNECTION
LOST''

MESSAGE

YES

Figure A-12

Call Abort or Termination Sequence

(* It is assumed that the VAX system keyswitch is in a REMOTE
position.)

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A-27

APPENDIX B
WIRE WRAP INSTRUCTIONS

B.l PURPOSE
This appendix is intended to assist the user who installs or removes wire wrap jumpers. It describes and
illustrates the preferred procedures and standards for producing high-grade solderless wrapped jumper
wire connections.
·
B.2 DEFINITIONS
The following terms are used in discussing wire wrapping:
Solderless wrapped connection- This connection consists of a helix of continuous, solid uninsulated
wire tightly wrapped around a wire wrap pin to produce a mechanically and electrically stable connection. In addition to the length of uninsulated wire wrapped around the wire wrap pin, a half turn of
insulated wire is wrapped around the pin to ensure better vibration characteristics (Figure B-1 ).

TAPERED TIP ON
THE PIN (APEX)

END TAIL

CORNER OF THE PIN

WRAP OF
INSULATED WIRE

No. 30 AWG WIRE
REFERENCE CORNER
11-4974

Figure B-1

Solderless Wrapped Connection on Wire Wrap Pin

A turn of wire - A turn of wire consists of one complete, single, helical ring of wire wrapped 360 degrees
around a wire wrap pin, intersecting four corners of the pin. Thus, a connection having "n" turns in
contact with the wire wrap pin will intersect the reference corner "n + l" times (Figure B-2).

A half turn of wire - A half turn of wire contacts three of the four corners of a wire wrap pin (Figure
B-3).
End tail - An end tail is the end of the last turn of wire on the wire wrap pin.

B-1

WIRE CONTACTS ALL FOUR CORNERS,
ANO CONTACTS THE REFERENCE
CORNER TWICE.
11-4975

Figure B-2

Full Turn

WIRE CONTACTS
THREE CORNERS
OF PIN

11-4976

Figure B-3

Half Turn

8.3 CONNECTIONS
Turns are counted along the edge of a reference corner (Figure B-1 ). There should be seven to nine ·
turns of insulated wire on the. wire wrap pin. Each turn should be adjacent to the next turn; one turn
should not be wrapped over another turn. The end tail may extend tangentially away from the wire
wrap pin, but should not extend more than one wire diameter.

If a second level of wire wrap is placed on a wire wrap pin, the bare wire of the second level wrap
should not overlap the first level wrap. The first turn of the insulated wire of the second level wrap
may, however, overlap the last turn of the first level \Hap (Figure B-4).
The wire used for the jumpers should be good quality wrapping wire. DIGIT AL uses the following
specifications for the jumpers installed at the factory:
Conductor
Gauge
30 AWG solid
Material
Silver-coated copper
Diameter
0.0257 + 0.0008 cm or -0.0003 cm (0.0101 + 0.0003 in or - 0.0001 in)

B-2

,, -4977

Figure B-4 Two Levels of Wire Wrap

Insulation
Material
Vinylindene flouride
Outside Diameter
0.048 ±0.003 cm (0.018 ±0.001 "in)

U .L. Style No.
1423
DC Resistance/304.8 m (1000 ft)
113.6 ohms
NOTE
This wire should not be used for solder applications.
Figures B-1 and B-4 show recommended solderless wrapped connections. Figure B-5 illustrates connections that should be avoided.
B.4 PROCEDURE
To install a wire wrap jumper, proceed as follows:
1.

Cut a piece of 30 A WG wire 5. 7 cm (2-1/4 in) longer than the distance between the two wire
wrap pins.

Strip 2. 7 cm (1-1/16 in) off each end of the wire.

B-3

OVER WRAP
(PILE WRAP)

END TAIL TOO LONG

INSUFFICIENT INSULATION

IMPROPER SPACING AND
OVER TAPER END

111

BENT WRAP- POST

OPEN WRAP

I I

INSUFFICIENT TURNS

OVERLAP

I I

SPIRAL WRAP
,, - ~031

Figure B-5

Defective Wire Wraps

B-4

Insert the wire into the wire wrap bit far enough for the insulation to enter the feed slot
(Figure B-6).

Loop the wire through the anchoring notch.

Place the tool on the wire wrap pin and actuate the rotating spindle (bit). This should
produce eight turns of bare wire and one-half to two turns of insulated wire on the wire wrap
pin.

Load the free end of the wire into the wire wrap bit and wrap the other wire wrap pin.

Use an unwrapping tool to remove a wire wrap jumper. A jumper may be snipped out to break the
electrical connection, but when it is desired to reuse the wire wrap pin the remaining wire should be
removed carefully. Pulling the wire off may bend the pin and dent the pin corners. Therefore, it is
recommended than an unwrapping tool be used to remove jumper wire wraps.
Place the tool over the wire wrap pin and insert the end tail of the wrap into the unwrapping tool bit.
Carefully unwrap the wire- and discard it. Jumper wi-res s-h-0uld not be r-eu-se-G.

If it is desired to place ·a second level wrap on a wire wrap pin, care should be taken not to overlap the
first wrap. If there is insufficient space left on the wire wrap pin for a second level wrap, remove the
first level jumper and install a new one lower on the pin. A wire wrap joint that is installed too high on
the pin should not be forced to a lower level; it should be unwrapped and replaced with a new one at
the lower level.

B-5

STATIONARY
----SLEEVE
- - - - - ROTATING SPINDLE
(BIT)
_ _ _ _ _ _ WIRE ANCHORING
11
NOTCH

WIRE INSERTED

TOOL TIP

WIRE ANCHORED

WRAP-POST
INSERTION

TYPICAL
CONNECTION

,,_ 5038

Figure B-6

Loading the Wire Wrapping Kit

B-6

APPENDIX C
USER GUIDES
A customer user of DIGITAL remote diagnosis needs only a few
instructions to work with the DDC/RDC successfully. The DDC/RDC is
always ready to give the customer any instruction needed.
As a result, the KC780 User Guide is a two-page document; it is
reproduced in this manual as Figure C-1. The option kit includes
it as part number EK-KC780-UG and it is stocked by Publishing and
Circulation Services in Northboro. After showing it to the
customer, you may post the guide, give it to the customer for use
as a stand-alone document, or you may file it in the Site
Management Guide behind the tab titled "XI. Remote Diagnostic
Con so 1 e ( RD C) " •
Fi g u re C- 2 i s a rep rod u ct ion of form EK- 11 T8-0 ~DC wn i c l1 i s a 1 so
filed in the Site Management Guide binder behind the same tab.

kc780-ac(007)

7/26/84
C-1

I
TO REQUEST REPAIR SERVICE, CALL:

DOC/ADC TELEPHONE NUMBER

THE DIGITAL REMOTE DIAGNOSIS CENTER
provides remote diagnosis service 24 hours a day, 7 days a week. for all RD contract systems.
You should report all types of hardware failure:
Processor or Peripheral
Identified or Suspected
Hard or Intermittent

WHEN YOU CALL:

The DDC/RDC will ask you to identify:
Yourself
Your company
The site address
A phone number where you can be reached
The system type and serial number
(System Type _ _ _ Serial Number _ _ _ _ _ _ __

The DDC/RDC will ask you about the problem:
What symptoms were (or are) present?
What error messages were printed on the terminal?

The DDC/RDC will tell you:
How to prepare the system for remote diagnosis.
For additional details. see next page.

The DDC/RDC will:

The DDC/RDC will inform the local DIGITAL Field Service Representative of test results.
DIGITAL will complete the repair on site.

Begin the appropnate test procedure almost immediately.
Notify the local DIGITAL Field Service office that your system
is under test.

The DOC/ADC will verify that the system has been repaired if requested to do so by the local
DIGITAL Field Service Representative.

WAIT FOR THE DDC/RDC TO TEU YOU HOW TO PREPARE THE SYSTEM FOR TESTING.
Important failure data may be lost if their instructions are not followep. Although the DDC/RDC will guide you through
!he various testing procedures, the foiiowing descriptions ot typical sequences may be helpful.

Figure C-1

1982, 1984 Di9ita1 Equipm9nt Corpontion. AP Rights R-...d.

KC780 Family User Guide

kc780-ac(007)

6/6/84

C-2

(Sheet 1 of 2)

WHEN MAINTENANCE DIAGNOSTICS ARE TO BE RUN BY THE DDC/RDC:
The DDC/RDC may ask you to:
See that the modem has power and is set for "normar· operation.
Dismount or protect media containing sensitive data.
Identify location of [SYSMAINT] diagnostic library.
Mount scratch media on units to be tested.
Set AUTO RESTART switch to OFF.
Set keyswitch to LOCAL
For VAX-11 /780 or VAX-11 /782
Load and boot Remote Console diskette in RX01 drive 0: USA - RX4
Europe - RX41
For VAX-11/785
Load and boot System Console diskette RX1 A in RX01 Drive 0
For VAX-11 /782
Set the LOPX2 processor select switch for the processor to be tested.
Turn keyswitch to REMOTE.
The DDC/RDC will connect via its host computer and begin testing.
Modem indicator lights may be active as testing procee-ds.
The system terminal may echo DDC/RDC and CPU dialog.
The DDC/RDC may ··talk"' to you at the system terminal.
You may be asked to load a diskette
For VAX-11 /780 or VAX-111782: USA - RX5 or RX6
Europe - RX42 or RX43
For VAX-11 /785: RX2A. RX3A. RX5. RX7. or RXSA.
After testing. the local DIGITAL Field Service Representative will complete the repair.
The local DIGITAL Field Service Representative may request the DDC/RDC to verify normal operation.

WHEN DDC/RDC ACCESS TO.THE OPERATING SYSTEM IS PERMITTED
The DDC/RDC may ask you to:
Mount operating system media and boot the system
For VAX-11 /782. set the processor select switch for remote access.
Turn the keysw1tch to the REMOTE DISABLE position; the DDC/RDC may ask that the REMOTE position be selected
to permit them to do crash dumps and other operating system related data testing. The keysw1tch position should
not be changed until requested by the DDC/RDC.
Provide DDC/RDC with an account number and password.
The DDC/RDC will log-in and begin testing.
The system terminal will echo all DDC/RDC and CPU dialogue.
The system terminal keyboard will be disabled.
The DDC/RDC may "talk"' to you at the system terminal in REMOTE.
After testing, the local DIGITAL Field Service Representative will comple(e the repair.
The local DIGITAL Field Service Representative may request the DDC/RDC to verify normal operation.

PREVENTIVE MAINTENANCE
Preventive maintenance diagnostic sessions which will include DDC/RDC testing (also extended monitoring for
iotermittent failure) will be scheduled by the local DIGITAL Field Service Representative subject to customer
approval.

DIGITAL-SUPPLIED MODEMs
The remote diagnosis hardware may include a DIGITAL supplied MODEM. The direct connection of these devices to a
dedicated telephone line is regulated by governmental authority.
THE CUSTOMER IS ULTIMATELY RESPONSIBLE FOR COMPLIANCE
WITH APPLICABLE REGULATIONS
DIGITAL-supplied modems which fail are usually exchanged, not field repaired. Only the manufacturer or authorized
agents may repair such equipment. The customer is responsible to ensure that the telephone company is notified when
an exchange involves units which are electrically different and/or have differing registration numbers.

FOR ADDITIONAL INFORMATION. SEE:
The RDC section of the Site Management Guide

Figure C-1

KC780 Family User Guide

kc780-ac(007)

6/6/84

C-3

(Sheet 2 of 2)

llC- 11710cOC·OCn

VAX 11/780 REMOTE DIAGNOSIS PREPARATION
This section is intended to provide the information necessary for the user to utilize Remote Diagnosis.
the Service Response Group (SRG). and the Digital Diaposis Center (DOC) to identify a system
malfunction.

Ir 1 sysaem malfunc:tioll is detected. ,...ceed u follows:
I)

Contact the SRG via the,,.. hot line.. telephone.

Provide the following information to the SRG:
a1
b.
c.
d.
e.
f.
g.

Caller·s name and phone number
System type and serial number
Company (customer name)
Equipment location (address)
Description and frequency of your problem
Phone number and extension where you can be reached
Operating system software type and version

At this point if remote diagnosis is applicable. the SRG will 101 your call with the DOC and
inform your local branch field service office that remote diagnosis testing is being performed on
your system.

If you are asked to set up your system for remote diagnosis. follow the appropriate procedure as
described belov..

When the DOC has diagnosed the problem. the local branch field service office will be contacted
with the DOC engineer"s recommendation for correcting the problem.

PREPARING A VAX 11 /780 FOR REMOTE DIAGNOSIS
First, some highlights: The DOC assumes that the remote diagnosis console Ooppy is mounted in the
front end. The Ooppy number is 'RX4,t 11.1780 REMOTE
CONSOLE FLOPPY". If this Ooppy is NOT booted in the LSI. the DOC cannot connect to your
machine via the remote pon of the LSI front end. If this is the case. the floppy must be booted in the
LSI front end before the DOC connects.
flopp~ drive and booted in the LSl-11

The DOC also assumes that the system disk pack (or an assigned diagnostic disk pack) is ready. online. and write protected if VMS is not running. This pack has a diagnostic area (SYSMAl~T) that
~·ill be used by the DOC to load and run diagnostics. If VMS is running. the DOC may v•ant to run
on-line diagnostics or error logt?er dependin@ on the severity or the malfunction. The system disk pack
or assigned diagnostic pack need not be write protected in this case.
I.

STAND ALONE REMOTE DIAGNOSIS ON Jli780 (VMS NOT RUNNING)
a. Determine whether the remote console floppy is booted in the LSI. This can be accomplished by turning the access key switch (on front console) to REMOTE. If it is not the
remote console floppy that is booted the system will repon .. Remote access not supported ..
(I)

If the console floppy is NOT booted - place ·RX4/ REMOTE CONSOLE FLOPPY"
in the floppy drive and turn the LSI power switch OFF then back ON - this will
automatically boot the LSI with the Remote Pon protocol and type some information
and end with a • • prompt. Proceed with the next step.

Xl-11780-1

Figure C-2

Site Management Guide Insert (Sheet l of 2)

kc780-ac(007)

6/6/84

C-4

(2) If the floppy has been previously booted in the LSI - proceed with the next step.
b.

c.
d.
c.
2.

Write protect the system disk pack (keeping on-line and ready) if this pack has the diagnos-_
tic (SYSMAINT) area on it, or mount the assigned disk pack with the (SYSMAl!'tl) area
on it in a drive and write protect it.
Place the AUTO RESTART switch (on the front console) to the OFF position.
Rotate the access key to REMOTE (on the front console) - the REMOTE indicator will
light.
The VAX 11 /780 is now ready for remote diagnosis.

ON-LINE REMOTE DIAGNOSIS OF 11/780 (VMS RUNNING)
a. Determine whether the remote console floppy is booted in the LSI.
(1) If NOT, the DOC cannot connect to your 11 /780 via the remote diagnosis pon in the
front end. Call the DOC at this point for further instructions.
(2)

b.
c.
d.

If the floppy has been previously booted in the LSI proceed to the next step.

Rome the access key s·v.·m:n {on front console} nn'hc R·EMOTE DtSAB-LE POS+Tt0~ the REMOTE indicator ~-ill light.
Leave all system disks in their normal state.
The VAX l l /780 is now ready for remote diagnosis.
NOTE
I~ EITHER CASE (VMS RD.;NJ~G OR 'OT1

IF THE DOC CA,NOT ACCESS THE DISK TO
LOAD DIAG~OSTICS. YOl" WILL BE CO'TACTED OVER THE CO"SOLE TER!\11,AL
AND MA\" BE ASKED TO l'SERT S0~1E
FLOPPIES I~ THE LSI TO EXHA,CE DIAGNOSIS

If you have any questions about preparing for a remote diagnosis session or encounter any problems in
implementing the procedure - please call the DOC for assistance.

Xl-11780-2

Figure C-2

Site Management Guide Insert (Sheet 2 of 2)

kc780-ac(007)

6/6/84

C-5

APPENDIX D
COMMUNICATIONS SWITCH DOCUMENT

This appendix ·is a reproduction of the document which is shipped
with the 30-21661-01 Four-Port Communications Switch. The
document part number is EJ-25436. The switch is an optional
accessory which makes it possible to provide RSD services for
multiple processors using a single modem.

kc780-ad(007)

7/26/84
D-1

COMMUNICATIONS SWITCH
FOR USE WITH
REMOTE SERVICES DELIVERY OPTIONS
Communications switching can be used to satisfy a wide range of customer requirements for Remote Services
Delivery ( RSD). It is no longer necessary that each system have its own modem and dedicated telephone line. A
multiple system site can be served by one phone line and one modem or various configurations of switches, modems,
and phone lines.
• Can be used on systems that have· RSD options with stand-alone modems.
• No change to system hardware: A cable connects each RSD option port to the switch; another cable connects the switch common to the modem.
• Can be used on systems located within

aradius of 150 feet from the modem.

• Configuration can be designed to serve site requirements and can be changed or upgraded easily.

SITE PREPARATION
I.

Determine where the switch unit is to be installe~ an operator will control RSD access to each system from that
location.

Determine where the modem and the telephone data jack will be installed

Determine that required cabling lengths are in accordance with the Cable Configuration Chart on page 2.

INSTALLATION PROCEDURE
l.

Prepare each processor with its RSD option installed and its RSD port connector accessible.

Connect the switch-to-modem cable from the switch unit connector labeled COMMON to the modem

3. Connect the system-to-switch cable from the RSD port on each system to a switch unit connector labeled A. B,
C. or D.
4.

Note that usually no connection is made to the switch unit connector labeled MONITOR

OPERATION
l.

When a system is to be accessed for RSD. set the communications switch to the position for that system before
the telephone connection is made.

Do not change the switch setting while RSD activity is in progress; the carrier signal will be lost and the system
RSD option will terminate RSD access.

Figure D-1

DIGITAL EQUIPMENT CORPORATION

Communications Switch Document (Sheet 1 of 2)

kc780-ad (007)

6/6/84
D-2

MENU ITEMS

SYSTEM TYPE

PART NUMBER

ONE KIT REQUIRED
PER PROCESSOR

11/730
111750
11/44
111780
11/782 (two kits)

KC730-BA
KC750-DA
KBDOI-BA
KC780-EA (USA) or KC780-DA (EUROPE)
KC780-EA (USA) or KC780-DA (EUROPE)
KC782-AA {USA) or KC782-DA (EUROPE)

Kits contain
processor-to-RSD
EIA port hardware only.

MODEM

DF03-AA (300/1200 Baud)

EIA PORT SWITCH

30-21661-01 (Four-Port)

CABLE CONFIGURATION
SYSTEM-TO-SWITCH
CABLE CAN BE:

IF SWITCH-TO-MODEM
CABLE IS:

10'

25'

75'

150'

(BC22F-10)

10'

(BC22F-25)

25'

(BC22F-75)

75'

(BC18E-A5)

150'

PROCESSOR

F"OUR•PORT
SWITCH

EJ-25436

MODEM

page 2

Figure D-1

Communications Switch Document (Sheet 2 of 2)

kc780-ad(007)

6/6/84

D-3

EK-KC780-TM-CN1
PRELIMINARY
NOVEMBER 1984

TECHNICAL DOCUMENTATION
CHANGE NOTICE

This

Change

revision

007

Notice

provides

KC780

Technical

revised

to 008,

When the manual
changes.

the
is

.;-

-~- -

information

·---- ----~·-··-:-~

Manual,
it will

that

updates

EK-KC780-TM.
include these

'Tb J .s doc 1i men t wa-s----r--e-t-e-a-se-a--tu Man u f a c tu r i n q i n

p~;i~iminary form ·so it could be shipped with KC780

kits as soon as possible.

digital equipment corporation • maynard, massachusetts
11/12/84

- 1 -

EK-KC780-TM-CN1

o Page 4-5,

Table 4-1

Table 4-1 is changed to include the new DF112-AA modem that
is now being shipped

in KC780 kits.

The new version of

the

table follows.
RINGER
MODEM

MODEL

FCC REGISTRATION

EQUIVALENCE

MANUFACTURER

NUMBER

GDC

103A3

AG697J-62418-DM-E

0. 6, Type B

VADIC

VA355P

AJ496M-70263-DM-N

1. 0, Type B

DIGITAL

DF02

A0994Q-67693-DM-R

0. 3, Type A

DIGITAL

DF03-AA

A0994Q-69391-DM-R

0. 3, Type A

DIGITAL

DF112-AA

A0994Q-13634-DM-E

0. 3, Type B

o Page 4-Y,

Figure

4-~

Figure-4-2 will be changed to show that the new DF112 modem
is now being shipped in the KC780 kits.

o Page 4-28,

Installation Step 9

Information about the new DF112 modern will
the

DF112:

The

proper

option

states

are

included.

preset

For
the

factory; no on-site preparation is required except mechanical
assembly.

The manual

this

shipped with

the modem tells

how to do the assembly.

11/12/84

2 -

EK-KC780-TM-CN1

you

o Page 4-39,

Paragraph 4.8.1

Information about the new DF112 modem will be included. Since
the KC780 does not use the new features of the DF112 yet, set
the front panel switches as follows:
All switches except HS {High Speed) out.
HS switch out for 300 baud operation.
HS switch in for 1200 baud operation.

o Page A-5,
Table A-1,

Table A-1
and the paragraphs that refer

changed to show that it is only applicable
Vadic modems.

11/12/84

3 -

it, will be

to the GDC and

EK-KC780-TM-CN1