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HP 3488A Teardown, Dismantled for Parts [Hackaday]
[IMSAI Guy] has an old HP 3488A Switch Control Unit that he wants to dismantle for parts ( see video below the break ). The 3488A is pretty simple as far as HP test equipment goes — a chassis that can hold various types of relay cards and is programmable over GPIB. He notes up front that these are plentiful and inexpensive in the used test equipment market.
Around the back of the unit is a card cage that accepts up to five option cards providing
- 4×4 matrix switching
- on/off SPST switching
- switching signals to a common bus
- VHF switching
- Digital I/O signalling
