Keithley 197 GPIB board schema

[MiroS]

Hi everyone,

I am looking for schema of GPIB/488 board, model 1972-102-02D. Keithley  197 itself  seems to work, but GPIB is dead cold.

Thanks in advance!

[coromonadalix]

may help a bit

https://w140.com/tekwiki/images/f/f5/Keithley_1973-901-01C.pdf   62 pages,  many links and dud on the web,  no schematics

sadly no schematics, but part numbers

it refers to the classic 9914  ic  so many designs floats on the web,  normally comes with 2x  line buffers ic's


you have on ebay at least 3 books of this interface, ask the sellers if they have schematics inside them

good luck

[MiroS]

may help a bit

https://w140.com/tekwiki/images/f/f5/Keithley_1973-901-01C.pdf   62 pages,  many links and dud on the web,  no schematics

sadly no schematics, but part numbers

it refers to the classic 9914  ic  so many designs floats on the web,  normally comes with 2x  line buffers ic's


you have on ebay at least 3 books of this interface, ask the sellers if they have schematics inside them

good luck

I repeired this board, relay had weak cntacts. No idea what for is this relay, but it is switching power on GPIB board side.
I replaced it with random 5V relay and works now. I have no good replacement so it will fail again one day

Thanks!

[coromonadalix]

or may not  loll   

[zrq]

Are you in Poland? I'm taking one of my Keithley 197s apart for parts and I can send you my 1972 GPIB board for little. There are many dying electrolytic capacitors in it so I consider it is beyond economical repair, and I already steal it's CPU to recover an K617.
Just to cover the shipment from Switzerland (likely 9 euros) and maybe additional 10 euro to cover the bother to pack it up and for the trip to the post office.

Nevermind, just realized that you managed to fix it. Hope it can be a permanent solution.