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Read frequency points from E4407B Spectrum Analyzer

Question asked by aesimano on Jul 16, 2007
Latest reply on May 14, 2009 by miguez
I've been writing a program (C++) to interface with our E4407B analyzers over the GPIB bus using National Instruments hardware and .NET GPIB Language Interface. I'm able to control the analyzer and get the amplitude points over the GPIB bus, however I can't seem to find a simple way to get the frequency points.

I was hoping the instrument would supply pairs of frequency/amplitude data points (like one does for the amplitude correction), but it only seems to supply the amplitude points. I suppose I could "calculate" the frequency points using the start/stop frequencies and number of points (I'm using the maximum 8192) however I may get into rounding issues.

Please let me know if there is any way to get the frequency points in the analyzer span.

Best regards,