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VISA problems with ancient test equipment?


 

Hello,
my HBIB system works with 8568B spectrum anaylyzer, 8970A, 34401A and others.

However I fail to connect a 5350B to my system. Diag 80 (HPIB diagnosis) shows no errors. Also tried ddifferent HPIB cables with no change.
The counter is not found with Keysight Connection Expert. I get an VISA BFFF0012 error when I try to connect within WinGPIO software.

Before digging into the hardware of the HPIB interface within the counter, I assume that VISA is not working with "old" test equipment, as I have same problem with 5343A counter.

Is there workaround? Any ideas are appreciated.

Regards Ernst

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