Artifact Details

Title

SDS switch and selector modules

Catalog Number

102733587

Type

Physical object

Manufacturer

Xerox Data Systems, Inc. (XDS)

Identifying Numbers

Model number DB50 Printed in black ink at the top of the extraction handle.
Model number DX21 Printed in black ink at the top of the extraction handle.
Model number DX21.2 Printed in black ink at the top of the extraction handle.
Model number DX52 Printed in black ink at the top of the extraction handle.
Other number 10877D Stamped in black ink on the circuit side of the DB50 module.
Other number 110570G Stamped in black ink on the circuit side of the DB50 module.
Other number 111741B Stamped in black ink on the circuit side of the DB50 module.
Other number 137850D Stamped in black ink on the circuit side of the DB50 module.
Serial number 6346372 Printed vertically in black ink on the extraction handle of a QB53 module.
Serial number 865195 Printed vertically in black ink on the extraction handle of a QB53 module.
Serial number 95211223 Printed vertically in black ink on the extraction handle of a QB53 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 the active and passive components, consisting mainly of transistors, diodes, resistors, capacitors, and jumpers.

All the cards have various quality control stamps on one or both sides of the PCB.

This catalog number consists of the following logic module quantities and types:
DB50 1 Shift register
DX21 1 Comparator
DX21.2 1 Comparator
DX52 1 Shift register

Category

Component/module