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Multiple calibrations

Question asked by nsm on Jun 12, 2012
Latest reply on Jun 13, 2012 by daras
Hi,

I am using a pulsed PNA-C with the Z5623A H81. I need to do return loss measurements of both the ports of the amplifier that I am measuring. I am doing the measurement through a switch matrix. All the measurements are done in an automated manner.

1. I first do an enhanced response cal and then save the cal as a .csa file.
2. Then I switch the matrix so that during measurement, I reverse the device. Then I do a 1 port cal.Save this as a .csa file.(A different file name than the previous one)
3. I find that when I do this, the enhanced response cal goes awry. What I mean by this is that, when I do the measurements, I do not get the same response that I get when I do only the enhanced response cal. I am wondering if the enhanced cal gets overwritten by the 1 port cal.

rgds  

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