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HP8591A Unstable measuring

Question asked by ON4IMMDirk on Apr 17, 2012
Latest reply on May 25, 2012 by tabbott

I have a HP8591A spectrum analyzer.When i put a 1Ghz signal in to input the signal jump from 800Mhz to 980 Mhz , very unstable .The calibration failed with "Cal signal not found" The CAL Output works on a other spectrumanalyzer HP8591 E.

Any one cant help me 


Edited by: ON4IMM Dirk on Apr 23, 2012 10:44 AM