Artifact Details

Title

SDS HK77 index/sector decoder module

Catalog Number

102733834

Type

Physical object

Manufacturer

Scientific Data Systems (SDS)

Identifying Numbers

Model number HK77 Printed in black ink at the top of the extraction handle.
Other number 191045E Stamped in black ink on the circuit side of module serial number 6059349.
Serial number 1123065 Printed vertically in black ink on the extraction handle of a module.
Serial number 6059349 Printed vertically in black ink on the extraction handle of a module.

Dimensions

overall: 6 in x 7/8 in x 5 5/8 in

Description

These modules are PCBs intended to be inserted in a card cage. There is an extraction handle attached to the front of the card, on which a paper label containing the model number, serial number, and other information is printed.

Opposite the handle there are 47 bifurcated gold-plated contacts arranged in two rows. Mounted on the component side of the PCB are active and passive components, including transistors, diodes, resistors, and capacitors.

The card has various quality control stamps on one or both sides of the PCB.

Module serial number 1123065 does not have an 'other number' stamped on the circuit side of the board; "OK" is written in pencil instead.

Category

Component/module

Credit

Gift of History San Jose

Lot Number

X3872.2007