VISA Problems with older Spectrum Analyzer

[SebObpacher]

Hi Maxime,

We are trying to modify PyGMI to control an older spectrum analyzer (Agilent 8560EC) via a prologix GPIB-ethernet adapter.

So far I have still problems with VISA.
When scanning via PyGMI for connected instruments I get two VISA addresses:

1. TCPIP0::169.254.75.200::Agilent8560EC::INSTR
2. ASRL10::INSTR

Next step would be to initialize the instrument which doesn't work.
I get an error inside the instrument driver:
"VI_ERROR_RSRC_NFOUND (-1073807343): Insufficient location information or the requested device or resource is not present in the system."

I tried different driver and VISA environments. At the moment I have installed NI software, including NI-VISA, Runtime engine and Labwindows, which seemed to work best so far. NI also wrote a driver (called hp856e) for the analyzer which is currently installed (the other NI software is required for their driver). However I’m not sure if I need this driver and the NI environment as the PyGMI documentation reclaims it would also be possible to write your own instrument driver.

I could also imagine, that there is a problem with the PPMS driver, as I don’t have MultiVu installed yet.
Unfortunately I wasn’t able to find MultiVu somewhere else but on Quantum Design Homepage (only for customers, which we aren’t).

Do you have any advice for me to solve the VISA-related problems?

Best regards
Sebastian