E4407B Spectrum analyzer Max Hold

[dksteel]

I am using the new LabVIEW 8.0 IVI drivers(GPIB) for the agilent E4407B Spectrum analyzer.  I have them up and working great but I need to put the spec. an. into max hold mode and for some reason I can't find a provided vi or a poperty node to do this.  I am sure that its probably there and I am over looking it, but I was wondering if anyone has a quick idea.  Thanks!

Dave

[Angela M]

Hello Dave,

I tried looking through the data sheet for this instrument, but I cannot find any reference to this max hold mode to which you are referring.  Is this setting known as something else?  What does the function do?  These driver functions are usually grouped, so if you know of another similar function that you are able to find, it may be in the same palette.

Regards,
Angela
Applications Engineer

[dksteel]

Angela,

Thanks for the reply.  On the front panel of the instrument you press the view/trace button then when the menu appears on the screen you select the max hold option.  This function keeps the maximum point of the trace after each sweep.  For frequency measurements its very handy to see what your spectrum looks like, especially for FSK signals, as it fills in the signal over a few sweeps.  I couldn't find it in the trace palette but I believe this functionality should be in there somewhere, I'm just overlooking it.  Thanks!

Dave 

[Dennis_Knutson]

What you could try is first looking in the manual to see if there is actually a remote command that performs the operation. Then, since you are using an IVI driver, download the CVI driver and look in the CVI source code to see if that command is in the driver. There should be a file with a .c extension that you can open in any text editor

[dksteel]

Dennis,

Thanks for the tip I was able to find it in the CVI driver and from there figure out where it was in the IVI driver.  Thanks again!

Dave

[dksteel]

Dennis,

Thanks for the tip I was able to find it in the CVI driver and from there figure out where it was in the IVI driver.  Thanks again!

Dave

[Dennis_Knutson]

For anyone that might need to use this in the future, what was the LabVIEW function name?

[dksteel]

The IVI function name is configure trace type.  Thanks again for the help

Dave