TitleSDS HK77 index/sector decoder module
ManufacturerScientific Data Systems (SDS)
|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.|
Dimensionsoverall: 6 in x 7/8 in x 5 5/8 in
DescriptionThese 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.