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DEC-8L-D0DA-D

July 1973

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Document:	DW08-A Bus Conversion (Positive) Installation Jul73
Order Number:	DEC-8L-D0DA-D
Revision:	0
Pages:	4
Original Filename:	DEC-8L-D0DA-D_DW08-A_Bus_Conversion_(Positive)_Installation_Jul73.pdf

OCR Text

DEC-8L-HODA-D

DWO08-A

BUS CONVERSION (POSITIVE) OPTION
INSTALLATION

DIGITAL

EQUIPMENT

INSTRUCTIONS

CORPORATION

MAYNARD,

MASSACHUSETTS

1st Edition, June 1969

2nd Printing, June 1970

3rd Printing, May 1971
4th Printing, November 1972
5th Printing, July 1973

The material in this manual is for informational
purposes and is subject to change without notice.
Digital Equipment Corporation assumes no respon-

sibility for any errors which may appear in this
manual.

The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts:
DEC

PDP

FLIP CHIP

FOCAL

DIGITAL

COMPUTER LAB

UNIBUS

DWOS8SA

BUS CONVERSION
(POSITIVE) OPTION
PURPOSE OF OPTION

[}

b. Connections and Installation
Determine the proper location for each

The DWOBA option provides the PDP-8/L Pro-

cable card either from Table 1 or from DEC

grammed Data Processor with the capability of

using options or peripheral equipment that re-

drawings D-MU-PDP8-L-18 and D-MU-DWO08A-MU (Module Utilization). These cables

quire negative logic levels.

should be fed through the openings in the side

of the PDP-8/L frame. The DWOSA ac power
cable should be plugged into an ac receptacle

in the rear of the PDP-8/L.

APPLICABILITY

This installation instruction is applicable to
any properly functioning PDP-8/L.

CAUTION
Use great care when installing the

PARTS LIST

cards in their respective connectors

The parts supplied with this option are listed in

to prevent breaking either the cards
or the connectors.

Table 1.

After all cable cards are installed and the
modules are checked to insure that they are
SPECIAL TOOLS AND TEST EQUIPMENT

properly seated in their connectors, the DWO08A
Bus Conversion option is ready for testing.

No special tools are required to install this
option.

To verify that the option has been

properly installed, the diagnostic programs

CHECKOUT PROCEDURE

listed in Table 2 of the Installation Instructions for the specific option are required.

a. Initializing

Before operating the power switch, check
the modules in both the PDP-8/L and the
INSTALLATION PROCEDURE

DWOBA to insure that each module and cable

is securely seated in its connector.
a. Unpacking

The DWOB8A Bus Conversion option is shipped
in a cardboard box.

Carefully open the box

and remove its contents.

Check each item

Turn the

power switch on the PDP-8/L ON (the switch
key vertical). The computer panel lights will
light in some random pattern, the fans in the

against the packing memo to insure that all

computer will come on, and the Teletype will
come on. (Refer to document DEC-8L-HRZA

hardware, software, and cables are there.

for detailed computer checkovt if necessary.)

The container and packing should be saved in
case it is necessary to return the bus conversion option for service.

b. Preliminary
Since the DWOBA option is not required

The DWOBA should be installed in the

unless some other option is connected to it, the

H960-B cabinet below the PDP-8/L (or BAOS

checkout procedure used from this point con-

if present) with a 1-3/4 in. filler panel be-

sists of testing the other options connected to

tween them.

the DWOBA.

c. Diagnostic Tests

The diagnostic tests for all options connected to the DWOBA should be performed at

the DWOBA Bus Conversion option.

If the
above tests show problem areas refer to docu-

this time.

ments DEC-8/L-HR1A-D and DEC-8L-HR2AD for the proper maintenance procedures to be

This concludes the installation and testing of

followed in correcting all problems.

Table 1
List of Parts Required for Option Installation
[Parts mounted in DWO8A Bus Conversion (Positive)]

Quantity

Module
Type
Number

Use

Location in
PDP-8/L
Row | Slot

Location in
DWOBA
Row | Slot

M101

Bus Data Interface

M507

Bus Converter

16-23

6
8

Mé650
Mé650

Negative Output Converter
Negative Output Converter

A
B

7-12
8-15

M907

Diode Clamp

M907

Diode Clamp

M903*

Connector (Flexprint)

A(B)

M903

Connector (Flexprint)

A(B)

M903

Connector (Flexprint)

A(B)

M903

Connector (Flexprint)

A(B)

M903

Connector (Flexprint)

A(B)

Location in

DF-32

WO1T1**

Signal Cable Connector

WO11

Signal Cable Connector

WOI11

Signal Cable Connector

1
1
1
1

wo11
WO11
WOI11
WOo11

Signal Cable Connector
Signal Cable Connector
Signal Cable Connector
Signal Cable Connector

(el
Cc
(e
C

12
13
14
15

A
A
A
A

16
17
18
19

wo11

Signal Cable Connector

WOo11

Signal Cable Connector

1
1

wo11
wo11

Signal Cable Connector
Signal Cable Connector

c
€

18
19

A
A

22
23

* M903 is for Flexprint; for coaxial cable use M904.
** WO011 is for coaxial cable; for Flexprint use W031.
Cable length, both input and output, must not exceed 23 ft (14 ft for Flexprint)
NOTE:

See Table 2 of Installation Instructions for specific option connected to the DWOBA.

- T

Row [ Slot