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E4407B with 82357B: visa error timeout

Question asked by vooltool on Jan 21, 2014
Latest reply on Jan 22, 2014 by vooltool

I'm trying to communicate to a E4407B analyzer via USB GPIB 82357B. 

I open the Agilent Connection Expert, after i plug in  USB GPIB 82357B, and after i plug in the E4407B analyzer.
The Connection Expert do verify and find several instruments.
The E4407B have GPIB address 18.
When i send the *IDN? command, i get error  ! VI_ERROR_TMO: A timeout occurred Visa ErrorCode: 0xBFFF0015 (-1073807339).

Help me please, I dont know where find the problem. I did try increas the timeout, but nothing help.