NI 5680 Read Error

Question

I am reading from a NI 5680 RF power meter in a while loop and sometimes the ni568x Read vi returns error -1073807339 which is a timeout before operation completed problem. Normally a read takes approx. 100 ms and when the error occurs it is at approx. 1.5 s. Obviously even 1.5 s indicates a problem but I'm also not sure why it does not wait the 5 seconds embedded inside the read vi before returning an error. What might cause this problem?

Answer 1

I'm seeing the same problem: intermittent time-out after only 1.5 seconds.
Error -1073807339 occurred at ni568x Read.vi
Possible reason(s):
Error: (Hex 0xBFFF0015) Timeout expired before operation completed.
I'm attaching the VI that I used, with the defaults saved for one of the failure runs (ran 3x, failed on two of them).  Actually, I'll attach 2 VIs.  Another way I've seen this is a timeout (just over 1.5 seconds) during ni568x Configure Correction Frequency.vi, but this VI is written a little differently.
My machine is a Dell Precision 390.  I first saw this problem a long time ago, and it seems like it went away after a while. Maybe I started setting the number of averages to something other than 0.  I'll attach one more version of the VI that shows my results when I use 3 averages instead of 1.  I still get funny timing (most measurements take 250 ms, some take 1.5 s), but at least I don't get an error.  Maybe that work-around will help until the root cause is found and fixed.
Attachments:
Frequency Sweep and Measure (timeout on read).vi ‏36 KB
Frequency Sweep and Measure (timeout on configure).vi ‏34 KB
Frequency Sweep and Measure (3 avgs, timeout timing, but no error).vi ‏38 KB