I have HP8594A spectrum analyzer and i am trying to back up Correction Contansts but analyzer appears to reset when Edit Fflatness is initiated.
More info :
Following service manuals instructions, using -37 Hz password, "srvc" appears on the left down corner, next if i push "VERIFY TIMEBASE" the Timebase Number appears and everything seems to going well but if i push "SERVICE CAL" to retrive Flatness Data a warning message appears "FACTORY CAL DATA CAN BE LOST".
If i continue pressing "EDIT FLATNESS" the analyzer reset and retern to normal use contition.
Can you help me please??
Thank you in advance.