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Intermittent OPC timeout on E4407B

Question asked by seanj on Feb 25, 2011
Latest reply on Sep 12, 2014 by generald
Hi All,

I am trying to do a simple channel power measurement wth 25 averages at 10.525GHz. 

After the channel power measurement I run an *OPC? command to be sure it has worked.  I am seeing that intermittently the OPC will not complete and times out after 10 seconds.  The E4407B is being used in a customer system and we had thae customer on site.  The sequence ran fine for 20 runs and then failed for with an OPC timeout error.  This is most certainly not a good thing to happen in front of a customer.

I had been using an E4405B but recently changed to an E4407B.  I had hoped that maybe the OPC error was related to the E4405B, where is also appeared intermittently but this was not the case.

Does anyone know why I am getting these intermittent timeout errors?

Thanks,
Sean  

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