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HP8753C with S-Parameter Test Set 85047 does not switch to 6GHz range

Question asked by radioman_te39 on Mar 12, 2014
Latest reply on Mar 12, 2014 by drkirkby
after replacing 8753C due to failing calibration, I found the replacement unit could not switch the frequency doubler on in the 85047 Test Set.
When I try to do this over GPIB, the red error message tells me, that there is an option missing,  but I can't seem to figure out which option that is.
Maybe I can move the hardware over from the old unit, to make it work up to 6GHz again ?