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HP8753B Firmware 3.00 calbration lost

Question asked by gianradio47 on Feb 7, 2015
Latest reply on Feb 14, 2015 by gianradio47
My HP8753B seems to be in order except that after doing any type of calibration and saving to a user register the constants are only saved during power on. If power is turned off and turned on again even after few seconds calibration is lost . A flag by the user register shows re-save so it seems to remember that there has been a save.
On the other side the VNA remembers which calibration Kit has been selected and  is in use
I changed the super-cap few months ago.  
 

Thanks,
Gianfranco  

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