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vrf Timeout error driving 34980A

Question asked by VRFuser on Aug 11, 2008
  • Comment • 1
It really depends on your programming. In a case you set up the instrument first and then it repeat its measurement, at the same time you read back the data from its buffer to computer and  the reading rate is a little faster than the instrument measurement rate this similar issue will appear.  

 

If it is this case be sure the buffer has enough data before you want to read them back to PC each time/iteration.

 

As I remember the buffer in 34980A is in overwritten mode and may not be overflowed.

 

Best Regards,

Xiaoying

 

  _____  

From: Nick Payne [mailto:NickP@jaltek.com]
Sent: Monday, August 11, 2008 8:58 PM
To: PDL-LISTS,VRF (A-Lists,unix1)
Subject: [vrf] Timeout error driving 34980A

 

Hi,

 

I’m running a sequencer in a loop that is performing various measurements and switch operations but on the fifth iteration an error 811 is generated.

 

The functions called in the sequencer are common for each iteration so they have operated successfully for four times before the error is generated.

 

Is there a buffer within the instrument that has overflowed generating this error or does anyone have prior experience of this.

 

I have tried sending a *rst command at the start of each loop and an open all for each card and this has not worked.

 

Regards

 

Nick Payne



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