Proper data types for XY Graph?

[altenbach]

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SynergyMike wrote:

To altenbach - ok, what I want is to have the X axis say, for example, 500-1000 MHz and then if the analyzer is changed to 200-500 MHz, have the X axis read that instead - how would I update the axis on a Waveform graph based upon output from the analyzer?

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You can change the offset and multiplier at any time programmatically by using the appropriate property nodes for the waveform graph. Let me know if you need more details.

[Dennis_Knutson]

SynergyMike,

Just look at the context help for a graph. If you can read the start frequency and delta frequency (and you should), you don't need  to have anything except a bundle function. 

 

You don't mention the make and model of the analyzer or whether you are using a driver. If you aren't, did you look for one or look at drivers for other spectrum analyzers?

Message Edited by Dennis Knutson on 10-09-2008 07:29 PM

[SynergyMike]

Thanks for all the help, guys!  I'm finally on the right track - I wired the error in/out nodes together in the proper order and eliminated the sequence structure altogether.  I also dumped the XY Graph creation module in favor of bundling the two arrays into a cluster.  FYI, I am using Rohde and Schwarz test equipment, of which we have quite a few (not surprising, since Synergy's owner is also partner of Rohde and Schwarz).  R&S has a few VIs available, but only a couple for the instruments I am working with and the VIs I tried just didn't work (hung indefinitely). 

Back when I was using LabWindows/CVI at my last employer I had tried a VI for an HP spectrum analyzer with similar non-results, so I decided to take a more "direct" approach using the GPIB read and write blocks.

Regards,

Michael