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Remote VISA timeout takes longer than expected


bbean

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Can someone help explain why the attached code takes longer than ~1 sec to execute if my network connection is down. As you can see in the NI Spy screenshot it takes >15 secs.

If the network is down I ASSume the 1000ms timeout should abort the VISA open. I know I shouldn't assume.

post-549-1168470539.jpg?width=400

:headbang:

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Can someone help explain why the attached code takes longer than ~1 sec to execute if my network connection is down. As you can see in the NI Spy screenshot it takes >15 secs.

If the network is down I ASSume the 1000ms timeout should abort the VISA open. I know I shouldn't assume.

post-549-1168470539.jpg?width=400

:headbang:

I had a similar problem a while back with "remote" FPGA open which is really just a special VISA open. The FPGA open/close/read/write timeouts can not be set. So, one solution was to use a VISA open with a custom timeout. I experienced the same problem and just gave up... Heres the post at NIs website.

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