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Low Level GPIB Communication with 2611B
I have a 2611B connected via a Keysight Technologies 82357B USB to GPIB adapter.
I'd like to communicate with the 2611B using low level GPIB commands, possibly without some other additional layer.
I have a small routine that just sends the command over GPIB and receives a string, but I first tried to use the Keysight Interactive IO tool.
If I send
*IDN?
I receive
Keithley Instruments Inc., Model 2611B, 4038432, 3.0.3
so the connection itself should work.
But even simple commands like
:SYSTem:LFRequency?
just result in a timeout.
! VI_ERROR_TMO: A timeout occurred
Visa ErrorCode: 0xBFFF0015 (-1073807339)
Can somebody tell me how to make the 2611B respond to my requests?
Thanks!