Re: Limits of the Port Extension on the Cal screen for calibrating at end of cable
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You mention port extensions but then in the post you refer to calibration ,? I just want to point out that those are different things !
When you do a calibration on a VNA you move the reference plane to the reference plane of your connector/cal standard no other adjustments are needed.
Port extensions are a software correction that are normally used to move the reference plane AFTER a calibration has been performed , this is typically done when you work with fixtures or other situations where a calibration is not practical
or possible
?
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From: [email protected] < [email protected]>
On Behalf Of Karin Johnson via groups.io
Sent: Thursday, May 26, 2022 11:46 AM
To: [email protected]
Subject: [HP-Agilent-Keysight-equipment] Limits of the Port Extension on the Cal screen for calibrating at end of cable
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Hello Group:
I have an 8753C and am wondering what the upper limit on cable length would be if I place the cal standards at the end of a cable to do remote measurement of S11.?? In other words I am using SOL, with the cal standards placed at the end of a 100 foot length
of RG-213.? Theoretically placing the measurement plane at the end of the cable.? I have already done this and the results seem to be accurate relative to an actual measurement at the that physical place.
I hope I have explained this issue sufficiently.?
Regards,
Karin Johnson??
BTW: I have had an account on the Keysight forums in the past and have recently tried to login to that site, but It won't let me.? Possibly password have changed, and I cannot create a new account.? I have posted with Keysight support and hope they return the
email.?
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