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PSA - Speed of Measurement

Question asked by jn_mohit on Sep 21, 2007
Latest reply on Oct 1, 2007 by bwreed
I have PSA E4440A (3Hz - 26.5 GHz). I have an automation routine using VEE which does spectrum measurements well.

All I am trying to do is make basic tone measurements, I set RBW and VBW = 3KHz and Span to 100kHz and for all the frequencies that I want to measure the tone at, I move the center frequency, clear the average and read data back, here's the code

"FREQ:CENT "+CENT_FREQ+" Hz"
"AVER:COUN "+avg
"CALC:MARK1:X "+CENT_FREQ
"AVER:CLE"
"*OPC?"
---wait to hear back from SA ----
"CALC:MARK:MAX"
---wait 100mS
"CALC:MARK:Y?"
---wait 100mS
---Read Returned Data

I have similar code for Rhode FSQ/FSU etc and it takes much less time than PSA does so I wondering if there are any techniques to improve the speed. I do have the display turned off but still not much improvement.

Another problem is if I try to run this code fast without any delays, the PSA kinda ignores few command and I do not get correct readings. Hence I have to add the delays and increase the average count too.

Any suggestions would be helpful.  

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