AnsweredAssumed Answered

HP 83630L sweeper unleveled

Question asked by bardo0003 on May 9, 2013
Latest reply on Jul 19, 2013 by dhamilton
Was doing a calibration for return loss. 
Start at 73.5Ghz 
Stop at 8.2Ghz 
Output pwr at 0 db 
Cal d up without a hitch. 
I come back from lunch and I'm getting a "unleveled" reading now. 
It levels out again at -20dbm. 
Anyone see this problem before? 
I checked my output on the DUT to ensure I did not hit it with voltage and there is none present. 
Any help would be greatly appreciated!