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XX-A3BAF-67

July 1975

20 pages

Original

1.8MB

Document:	DU11 RevD Engineering Drawings
Order Number:	XX-A3BAF-67
Revision:	000
Pages:	20
Original Filename:	http://bitsavers.org/pdf/dec/unibus/DU11_RevD_Engineering_Drawings_Jul75.pdf

OCR Text

DUll
.~Drawlngs
Digital Equipment Corporation

The material herein is for information purposes only
and is subject to change without notice. Digital
Equipment Corporation assumes no responsibility for
any errors which may appear herein.
These drawings and specifications herein are the
property of Digital Equipment Corporation and shall
not be reproduced or copied or used in whole or in
part as the basis for the manufacture or sale of items
without written permission.
Copyright &' 1975, Digital Equipment Corporation

~ ill iIt \alII ~~~§..;!~~

.,-

IIClUINCI

-nt.s .... _ SP£CIFICATUIIS. II:I£IH, ME TIt( PIOP£ITY OF DIGITAl £QUIMIT COIPOMTI. AID SHALL
lit' • . . - a D • COPIED. USED II .....£
Ii HIT AS THE IASIS FOR TIlE ....G_ OR SAlE OF
..,. 1ftw.J _ITTD fIE_SSI.. COPYIIIMf
973, DIGIT. £QUIPMEIIT ~TI.·

DRAWING DIRECTORY
CUSTOMER PRINT SET INDEX

,r B-DD-DUll-9f

SINGLE LINE PGM SYNCH INT
DUII-DA,EA FIELD INSTALLATION
AND ACCEPTANCE PROCEDURE
ACCESSORY LIST
PGM SYNC INTE~E
CABLE MODEM BC91SC
MODEM TEST CONNECTOR
TTL TO BELL SYSTEM :301 & 30~
HIGH SPEED MODEN CABLE
CABLE INTERFACE BD./~ I

A-SP-DUil-_~4

A-AL-DUll-91-3
D-csoM1822-91-1
D-UA-BC91SC-91-91
n-CS-H31S-lJ-l
O-CS-M595-0-1

_ _lei

MFG. PRINT SET
ACCEPTANCE PROCEDURE
TEST PROCEDURE

,,.

THIS IS PRINT SET I I I I~

Nt.", liT

UNIT

A-SP-OUII-O -I
A-S P- DU I 1- 0 - 2

VARIATIONS

VAR

D-UA~8 CfJIW- 0-0

D..,.CS-M910-Q-1

TITLE

1 2 3 4

Du11-0

SINGLE LINE PGM SYNC INT.

DUII-DA

SINGLE LINE PGM SYNC INT
CURRENT MODE

DU11-EA

SINGLE LINE PGM SYNC INT CURREN,] IX
MODE

•

> «
a:

•

UlED ON OPTIONIIIODEL

K. DAVIS

rr,

o;t

DUll

~~.
).~\.. 1):....;;( .

/c '/~/sJ

~NG.

l .. fa~73

ic; 800 80 000 80
0 0
fA
...!..
:;
J..
...a:
::>
0

'"c r--v _tt.
~

<:;t
r"-

;rnA
LJZ:·

::J
0

\.iJ

~ <...... ~ 'r:::

DRB 106

~(/ 0~~~

0
...!...

DATE

%
U

OlIN..

m u

r'-

"EET

3
/

9-14-3
~TE

DAgh
1/072
f7J

~A~

'~A"""-- --'iiI ~2(. ~

nTLE

SINGLE LINE
PGM S YNCH . INT •

SIZE CODE

B
DIST

NU.ER

DUll-¢

I I I I I I

REV

~Ull

SINGLE LINE PGM
SYNCH

0-UA-DU11-.-.

PGM SYNCH
IN'l'IRFACE
n-CS-M7822-,f1-1

CABLE ,MODEM

BC'SC
D-UA-BC'SC-,-/8

a>.·ftST
COMNECTOR
D':'CS-H315-,f1-1

TTL TO BEl.L SYSTEM

301 ~ 303
D-CS-M595-rl}-1
D-UA-BC(i}IW- fj-D
o-CS - M970- 0 -I

TITU

ORB 107
DEC 16-(325)-1062-3-N871

. . . .111
f,lN\;r. ..~ lINE
pt;M ~- YNCH. tNT.

. .1T2OP

DUl1-/6

REV

CUSTOMER
PRINT SET

____________________~E_L~E_C_T_RI~C_A_L____________________________~____ ~.:r

ti
e
I
~

i .

0f'I'1ON

NO
OF
DRAWING NO.

1
X
'X

*'1

D-UA-DUII-I~1J
A-SP-DUll-~-l
A-SP-DUll-~-Z

" ,

OlICRIPTION

"1\/ IHT

•
I
STWr..T.R LINE PGM S YNCK INT
SINGLE LINE PGM SYNCH. INT.
ACCEPTANCE PROCEDURE
~ 12
TEST PROCEDURE
'~lr-~~A~C~C=E=SS~O~R~Y~L~I~S~T~------------+------+-+~~~~----------------~--~~----------------------------~--~

6
PGM SYNC INTERFACE
~ I
X-Y COORDINATE HOLE LOCATION
y~",
tASSY/DRILLING HOLE LOCATION
\~'tI--+~M~O~D~U=L~E~E~C~O~H=I~S~T~O~R~Y~~--~--~----'-~~+-+-+-~------------------~~--~-----------------------------4----~
I

D-AH-M7822-(1-5
B-MH-M7822-~-6~~1

~~~~-~--+---ii-------r--

. caAWINO NO.

""./FLE
OATE

A 4

A-AL-DUll-~-3
X
X
2
D-CS-M7822-RJ-l
X
.t:,-+--+--+-+-t-=--+--=K;.....-..;;;C'O-M7822-~-4

- --

DATE

DESCRIPTION

OPTION

iNO."u

REV SHT

MECHANICAL

---f"'"

-+---~-------------------_,~l'~/-~-----~----4-~~4-~~-+------------------~--+---+------------------------------4----~

~X-+--+--+--I~-3-+--D~-UA--BC-~¢-!5C-¢-"--r.fi/-.,-<---4+~ . CABLE MODEM BL;,b~-_:~-~------+--4-.:.''+'-I--I-'"=3--+-D-'--U--A---B-C......,:',.-,!S,.-C--...,.......J6._,..,..---+-.-+--I-+-C-A-B-LE-,-M-O-DEM--B-C-J6-=-S-C-----+----4I
~--4--+-4---1--+---------,·";~t S~, ~&'/
x

D-CS-H315-.0-1
K-CO-H315-¢-4

'-- -

-------.----------~~--~------------------------------~--~
-------------------------r-+---+-------------------------------r---~

'# \,i,

"
MODEM TEST COJll'lECTOR
, X - Y COORDINA?lg,;, l=,iO"""L=-=E=--=LQ:--C::-:CA=-=-=T=-'"'I=-=O=N- -

~-+-+~~~~C~-~AH~-~H~3~15~-~7.-~5-----+--~'~--AS--S-Y-/D~R-I-L-L-I--NG~O~L-E~LA--¥~O~UT~--~-----~-+-~+-r-~~------------------~+---r---------------------------~----~
-·-J,~-+~-+-+--::B-_-::-:MH:::::-_-:::H=3-;1-;;;5:-_-~~-~6,------+-.J--=-1-+-~MO~D:"'::;U~L~E;'='::::::E~C~O~~H~I;""S";T::':;O:"::R:::Y;"-==-='::'=":::"::--·- -_.,
---~_+_+~~_+-~~-----------------~~+_--+_-----------------------------4~--~

I--+--f--l--i---f---+----------.------+---+--+--------------------,-- '"--, -,----,-..- ,--

-- r - - > - - - - - - - - , -.. -------1f--~-+_-------------------~I__-_t

r-+--~~~--+-----------------~-+--~--------------------------------- -----~-+-+-+-~~~-----------------~~-+---+-----------------------------~~--~
1--1f---j~_4_+-+-----------,-----+--_+_-_+_-,-- -,----,- >-,-- --I------" ".- -,---------t.-~-~----------------,--_+---_I

'*"

O-CS-M595-0-\

T'IL TO BELL SYSTEM 301 & 303

__~_+-~I~~~-+i__--------------~_+--~------------------------__~--~
--+-----------+---4--+---------------+----t
~___i-t_t_+-+_---------+__+-_+_-----------------.4__-,_-__
+-+_-+-_________________+-__--I

~X~:-+~1-+-~~D~-~U~A~-~B~C~0~'w~-~O~--O~_r#~~'~~H7IG=H~S~P7.E~E~O~M~O~O~E~M~C~A~BLE
0 CS-M97Q-Q-1

; #-

CABLE

'NTERFACE

Bo..'*'

___ -l-+- _,

-,--_,.&-+--t------i,_,_,,,____________

.-_ .

=--~~-~---= -- -- -j~=::-~-1+'
:=:~::=:=:==:===--~~~~~~~~~~~~~~~~'~_+I'-~----_----------~__--_-_-=~~___
il· :.

--H-,+-+-+---+-------,--

'-"-"'.,,------1----+-.-+----

1---11f---+--+--+--+-+-----------------l--~----I__,------,---____ ,

, ____ ,

-,,--,

-- --~
~---.
-------------'
---+1'
=E=~==:=--n-----~~=--,-:'-,
~---'-'-~
~"--i--+-+ -~,--------.±
-

I ~:~~
[
CODES

-----------------------+----'"

x =

PRINT OF OOCUMENT INa.UDED

C _

INCLUDES All PRINTS INDICATED ON DOCUMENT

5 ::: CONFIDENTIAL AUTHORIZED SIGNATURE REQUIRED

DFB lOR
DEC

IN PRINT SET

16-Cl.l~)·I062-2B-R97?

---

t I

- -,------4--4--4-------------------+---1
,-------,-----+---+---+-----------------+--~
"'----~-+--~---------------------+-----I

--.. ---- r-'+-----+------------------+---i

• t tt

- ---- ---- -+-"--f-----+-----------------+-----f

- ••
- -.

- ,-,-----+--+--+-----------------+-----1

,- - - , - - , - - - - - + - + - + - - - - - - - - - - - - - - - - - - - t - - - - t

+ +

.. , _,_, ___ ,_ ____

t---I1f--l--i--+--f.-+--------------+---.;----+- -'--, - - - - - - - - - - - - - ,-,,- " t---1f--l--i---l--f.---+---------,-----t--t---+-------------,---- -, -- -,
i
t---<!f--l--i--+--f.-+---'----------'---t'---- ---,-

-,,--------+--1f-----1f--------,------------+---t

+ t

--~--+--,~ - -, "

1+ j

-1
j

,-,,--- -,-----+~-~------------------+---t
~,------------~----~~-~

_,, ____ ,_______ +---+_ - - + - - - - - - - - - - - - - - - - + - - - - - 1

SIZE CODE

TITLE

SINGLE LINE
PGM SYNCH

lHiEl 3 OF

•

NUMal"
DUll-~

REV

ENGINEERING SPECIFICATION
DIGITAL· EQUIPMENT CORPORATION
TITLE

MAYNARD. MASSACHUSETTS

ENGINEERING SPECIFICATION

DATE 18/24/73

TITLE

co~nNUAnON SHEET

DUll-DA, EA Field Installation and Acceptance Procr ure

PROCEDURE
DESCRIPTION

REV

ECO CHANGE

APpn BY

This document is divided into two sections, the fi .t section
deals with the field installation of a DUll-DA or Z\, the second
section covers the customer acceptance of the opticl.

DATE

The installation section covers the configura·tion c; juaper. and
switches on the module itself. It also has helpful hints that
could save aggravation. All references to mod. . . are to the Bell
2'1 series for the DUll-DA, and to the Bell 3,3 for the DUll-BA.
No attempt has been made to cover other modems, although .any have
the same characteristics as those cited.
Throughout this document the term DUll, without a t~ffix, refers
to both the DA and SA version. Where inforaation p,~tains
specifically to one version only the appropriate suffix will be
added.

Index

I.,

Module Configuration

1.1.,

Unibus Address

1.2.'

Interrupt Vector Address

1.3.,

Miscellaneous Jumpers

1.4.,

Mounting Information

Field Installation
~

1.5.,

Power Requirement and Unibus Loading

1.6.,

Environmental Specifications

1.7.,

Preliminary Testing

1.8.,

Testing with Diagnostics

1.9.'

Systems Test

2.'

Customer Acceptance

1..

Module Configuration
The DUll module M7822 is configured for the cu.toaer's system
by cuttinq jUJIPers on the module and by settinq the switch
pack. In IIOst Ca.e. only the Unibus address and interrupt
vector addre•• need to be reconfiqured althouqh all juapers
will be defined.
.

1.1.,

Unibus Addre.s
The DUll Qaibus address fall. into the floating address space.
The fir.t DUll
floatin9 a6dre.s is 16'... This would be
the .4ddr__ of i:fiefirat DUll in· a syateaif the sy.tem con.isi:ed of no other davic.. that preceded the DUll in the
floati1lCJ addre•• IICh_. In this floatinq address .cheme the
DUll use. four addre..
.tartin~ on a zero boundary and
is prec...... by the DOll (i.e., 160040-&). Once the position
of the DUll has bMn d.t.~"" in the floating addre.s scheme,
the Unibull addre•• i. selected by t!ae rocker switohe. on the

.pace.

117122.

1.1.1

Settinq the Unibus Addr •••
S"itch pack (SP1) coauol. the UnilNs addr ••• of the DUll.
Onc. the Unibus ...t4re•• haa Hen "eterained, .et the rocker
.witche.
foll0W8. Por a 109ioa1 (1) OIl the Unibus
addr••• lin., .et tile rocker ..,itch that corr••poads to that
particular W-t ~ tM orr position. A switch is in the OPF
po.ition ...... the rooker i. depre••ed 011 the orp·;.ide of the.
.witch.

1-r1~1

ENGIN EERING SPECIFICATION

CONnNUAnON SHEET

•••••••-

Example:
To select an address of 160010 switches 1 through 9 would
be in the ON position, switch, would be OFF. No~e that
the number of switch does not correspond to the b1t
position on the Unibus, i.e., SW, doesn't sample BUS

1.3.0
Dra"", •

TITLE

A'.

1.2.0

1.2.1

1.3.,

Interrupt Vector Address
The DUll Vectors also fall into the floating interrupt
vector space. The first vector of the floating , scheme is
address 3". This would be the vector of the f1rst DUll
in a system that consisted of devices which di~ not pr~Cede
the DUll in the floating vector scheme. In th1s float1ng
vector scheme the "ll-W precedes the DUll. Each DUll in
a system occupies two interrupt vectors.
Setting the Interrupt Vector
The vector is determined by the position of jumpers W9
through W14. During an interrupt sequence a BUS 0 line
will be asserted as a logical (1) if a jumper is in place.
As cited earlier the DUll occupies two vectors. Only the
first vector need be considered and it must start on a Zero
boundary. The second vector is simply controlled by Wt-W14
and BUS 0 '2 which is controlled by the hardware.
Example:
To select a set of vectors, 3" and 3,4, cut jumpers .9-Wll
and W14. Jumpers W13 and W12 remain in.

J....

1f5

,
•

Jumper.
W2

W14
w13
W12
wll
WlO
W9

Function
This jumper is normally OUT. If this
jumper is in, the receiver logic will
synchronize on one sync character instead of the recommended two.
This jumper is normally IN. If this
jumper is left out, Bits 1-3 of the
RXCSR won't be cleared by Master Reset
or BUSINIT. In some cases the connection
with the Data Set may be required to
be excluded from the effects of Master
Reset or Bus Init.
Sets Vector Bit 8 when installed
Sets Vector Bit 7 when installed
Sets Vector Bit 6 when installed
Sets Vector Bit. S.when installed
Sets Vector Bit 4 when installed
Sets vector Bit 3 when installed

Hote:

SHEET _3_ OF _9_

!\i!!ction
'nits juaper is nomally h. If this juaper
i. eut pin UU of the __q header (noraally
SIIe RBC or ulluHld) will be diaconnected fro.
the BIA receiver. In other tbaJa the .pecified 1IOd. . . this pin My be connected to
~ift9 other tban SBC RBC in which ca.e it
_y IDe ......ary to r~ve the juaper.
'rhb jUlllper is noraally IR. I f this jwaper
is ...t, pin FF of the llerq header will be
4Iiacoaaected fro. the BIA driver. Bis pin
i. nGaMlly connected to the SBC XIII'r or an
unutMld lead of the lIOdea. In.adella other
thaa tbeae .pecified, i t lllay be nece.ary
to remove this j~.

.16

This jumper is nor.ally OUT. Only jA systems
where the voltage on pin AUl is at BV RIIS
should this jumper be in.talled. A
filter should also be installed in this case.
Refer to the installation section of the
DUll maintenance manual.

Ga".

If any of the aiscellaneou. juapers have been chanqed with
the .xception of IUS and WI', new parAlleter. llU.t be

entered into the diagnostic proqraa throuqh it's keyboard
monitor.
1.4.0

MOunting Inforaation

1.4.1

DUll-DA
The DUll-DA i. coapatible with all small peripheral
controller slots (SPC) to date, with the exception
of tho.e internal to the KAll.

NUMBER
DEC 16-(3111-1022-flt370

'lhi. jumper is noraally lB. V15 shollH only
be rellOve4 if the proce.sor beine u.~ i. a
!tAll witbout a mll option. Por all other
processor., ·this jwaper is in.

NUMBER

DU11-,-4

DU11-,-4
DEC FORM NO
DRA 108

If'

V15

Miscellaneous Jumpers--Modify only at customer's request
with the exception of W15 , W16 ~ WI4 -W,.

Drawing'

••CI'ltAWOiI

....

0011-....

DEC FORM NO
DRA 101

DEC 18-(311)-1022-flt370

SHEET _4_ OF _9_

ENGINEERING SPECIFICATION
TITLE

CONTINUATION SHEET

ENGINEERING SPECIFICATION
TITLE

Consideration must be given to the routing of the BC05-C
cable or cables. If more than one OUll-OA is mounted
in a system unit it would be desirable to have the system
unit mounted as close as possible to the port in the cab
provided for the cables.

IC & Pin
E16 _ 1

Refer to drawing O-UA-OUll-~-~ for the position of the
module in a system unit.
1.4.2

1.5.~

OUll-EA
The OUll-EA is compatible only with the OOll-B unit.
This system unit must have the appropriate ECO installed
for correct operation. Slots 2 or 3 are the only slots
which the OUll-EA can use in the DOll-B. To install a
OUll-EA into a OOll-B refer to Drawing O-UA-OUll~-_ for
the position of the modules. INSURE. THAT 0011-8 E.CO :3 IS
INSTALLED IN THE. 00 liB,
,
,
Extreme care should be used ~n the rout~ng of the BC~l-W
modem cable. INSTALL JUMPE.RS 202 AND 301 IN M970 ALL OTHER
JUMPE.RS OUT.
Power requirements and Unibus loading.

1. 5.1

Each ~Ull places one bus load on the Unibus as defined by
the peripherals and interfacing handbook, i.e., one BUS
Receiver and 2 BUS Drivers per line.

1.5.2

OUll-OA power rp.quirements
+5V @ 1.8 amps
+15V @ .04 amps
-15V @ .07 amps
OUll-EA power requirements
+5V @ 2. I amps
+15V @ .07 amps
-15V @ .2 amps

1.5.3

*Note:
1. 7.2

Voltage
+5v)+or -250 MV
-12V)+or -600 MV

Function
TTL & MOS supply
E16 16
MOS & EIA level converter supply
*E12 14
EIA level converter
supply
If W16 is in place, the voltage on E12 14 will be +8V,
+lV or -500 MV.
Verification of address recognition logic
With the following test loop the correct operation of the
address decoding logic can be verified.
STR:

MOV @ tsn, ~
ADD t" (~), execute. the DATI, OATO
JMP @ tSTRI on the DUll adrs logic

STR:

200

13700
177570
62710

000000
137
200
With this loop toggled in at adAres. 200.

1.6.0

Environmental Specifications
+lO°C to +50°C with a relative humidity of from 20% to
95% (without condensation).

1.7.~

Preliminary Testing

1.7.1

Voltage Checks
With the DUll plugged into the back panel check the voltages
at the following points. A 453 scope should suffice if
it's calibrated.

Load address 200.

Place the first register address of the
DUll into the console BWR.

Pres~

With a scope monitor point E6',6 on the M7822, the
following wavefor.a should be Observed. Mote that the
tiaing given aay not be exactly accurate because of
differences ift ayst.aa.

the start key.

+3V
~

[&-oF-I· -I
C

A-300llS to 1.5 usec
. . 500JlS to 2 usee
C-300l1S to 1.5 u.ee

ITl~l

NUIIBER
OUll-~-4
DEC FORM NO DEC 16-(381)-1022-N370
ORA 108

- _._-----.- -----

SHEET _5_ Of _9_

-_._._ _---•.

ENGINEERING SPECIFICATION
TITLE

1.7.3

1.7.4

CONTINUATION SHEET

DlC PO. . 110 OK . . ,• •t-.........,.
DRA 1(:'

_IIIIII • • •~
TITlE

Verification of the Unibus, Bus 0 line drivers
A.
B.
C.

With same loop used in 1.7.2 load the PARCSR address
(Sel. 2) into the console SWR.

Start the program. With the first scope probe
verify the LD PARCSR one shot at E68l2. This
output should be low for at least 65_NS (Refer
Fig. A).
Sync on channel one of the scope, with the second
probe verify that BUS SSYN is being inhibited for
at least 35~NS after the rising edge of the LD
PARCSR pulse. (Refer Fig. A)

B.
C.
D.
B.

1.7.5

LHd . . . . . 210

Place ___ tIDIOP addre•• iato the . . . (8el.6).
Plaoe abaDe1/8OOpe p~obe on
Place c:MImel 2 ecope prGIbe on EStiS.
Pruaftart...a verU,t:h. UlIin9 a. per !'iqure A.

Verification of . . .ter ....t

Te.tift9 wi~ 4i-.neat:ic••

1.8.1

DUll-DA
With the le,seC cable connected to the M782l .adul. and the
opposite 8114 of the cable terllinated by t:he BllS t . .t connector, .tart te.ti... with DIDU-M. All diagllOstic. fraa DZDU-M
to DIDU-FA ahoull. run in the external Mde. At lea.t 3 pa •• e.
of . .ch 4iawnostic sbould be . .de. This conclude. DU1I-DA
teati... , r ..... the 8315 conftector and plug the
into
the

LO PARCSR
(E68l2)

1IacI_.

SSYN EN
(E5905)

A
__ NS
B is greater than 350NS but less than 1.2 u.s
~l

If the .ad. . in question i. something other than those cited,
in.tallation te.ting is concluded here.
With the ci~ed .ad... , plug the Burndry connector of the
BC,l-W into the SYNC connector of the data set. Thjs
concludes DUll-EA testing.

NUMBER

NUIIBER

SHEET _7_ Of _9_

ac...-c

DUll-M
Starting with DIDU-AA through DIDU-FA, run all diagnostics
with the diagno.tic runnint ift the int.rnal maintenance aode.
At least 3 ...... of each diqno.tic .hould be ....e. Connect
the Berg connector of the -=,l-W into the M97, JaOdule. If
the mod_ is not a Bell 3,] or 3,1, special cables might be
required to connect to the lIOdea. This must be done through
the local office and ia not part of the DUll-EA installation.

DUll-~-4

DU11-.8-4
!)EC fORM NO DEC 16-(381)-1022'-l'lS70
ORA 101

B'....

1.8.,

1.8.2

(Channel 2)

r.o.d ti. . . .UC DDU-M, r.fu to the operatill9 in.tructions
of u.. I.k~t:1o . . . . .1eet: a84 loop on Te.t fl. Vuify
the -_tptt Of U. ..,.,- Oft. .bift (B64l3). '!'his CMitP'lt
.bou14 ... Uue fO&' , ua:. WhU. t:his out:put is true, sIn
. . (BStIS) .....14 . . fal...

Figure A
(Channell)

INlET _,_ OF _,_

R....t: thi. _ _ ~eced_. for t:M LD ...... one shot, Fig. A
ana dM uat.at iafoaMd_ ,1. .11 is the _ _ wit:h the exception of th8 .ttaal' ..... aa4 pin de.ignation••

Press Halt
Press Start to issue CLR in the ~Ull
Examine the last DUll register, TXOBUF, (Sel. 6)
The contents should read back as all ones. This
proves that all ~Ull unibus D line drivers turn on.

Verification of Slave Sync inhibit delay

CONTINUATION SHEET

DEC FORM NO DEC 16-(311)-1022-N370
DRA 108

SHEET _8_ OF _9_

--------------------------------------------------------------------~----~
CONTINUATION SHEET
ENGINEERING SPECIFICATION
TITLE

1.9.0

Systems Test

1.9.1

Using the DECX11 DUll moduleOUA_
run all DUll's on the
system.Up to 8
DUll's may be exercised on a system. At
least 3 passes of each DUll should be made.

2.0

Customer Acceptance

2.1.0

DUII-DA

Customer acceptance is based on the satisfactory conclusion
of Steps 1.8.1 and 1.9.1.
2.1.1

DUI1-EA
Customer acceptance is based on the satisfactory conclusion
of Steps 1.8.2 and 1.9.1.

SIZE CODEl
SP

DEC FORM NO
ORA 108

DEC 16-(381)-1022-N370

NUMBER

DUll-,0-4
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REV

OF _9_ _

MAYNARD, MASSACHUSETTS

ACCESSORY LIST
MADE BY
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K.DAVIS
10/26/73
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QUANTITY /VARIATION

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DIGITAL EQUIPMENT CORPORATION

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LINES TO EIA PINS 14 Il 16
B, 202- SECONDARY TRANSMIT Il RECEIVE DATA
LINES TO EIA PIN 1180 12

A. EIA -

C. :301 -

D. 811 -

ALLOW OPERATION OF RING AND DATA
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BELL 811 B RESTRAI~T FUNCTION IS
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;':1

J I

L I

E. BUSY- BELL 811 B FORCE BUSY FUNCTION ANDED
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