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Error running any example program on E4445A over GPIB in LabView

Question asked by mmich on Jun 14, 2012
Latest reply on Jun 14, 2012 by mmich
I keep getting the same error no matter what example program I run with the E4445A PSA.  (Attached is a screen shot of the error window.) When I run the measurements manually everything functions as expected, however when I automate it with labview I get the following errors:

+Possible reason(s):+

+Instrument reports:+
++622,"External reference missing or out of range"+
++101,"Frequency Reference Unlock"+
++0,"No error"+

Any help would be greatly appreciated, thanks.