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34461A Relative dB measurement

Question asked by Arnoldus on Aug 21, 2014
Latest reply on Sep 30, 2014 by tayezisk
I need to measure a relative level change in dB using the NULL facility.
But when I measure eg -6.00 dBm and press NULL, I expect a reading of 0.00 dB, 
but the meter shows a very fluctuating value around -100 dB! 
(An ACV value can be NULL-ed fine.)

Anybody has a solution for this?

Edited by: Arnoldus on Aug 22, 2014 10:02 AM  

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