Port Extensions - Keysight N9912A User Manual

NA (Network Analyzer) Mode
NA Mode Settings

Port Extensions

Port extensions allow you to electrically move the calibration reference plane
on either port 1 after you have performed a calibration.
Phase measurements, and therefore Port Extensions, are NOT available on port
2.
Why use Port Extensions
Use port extensions if you are unable to perform a calibration directly at your
device because the location is not accessible. Perform a calibration at a
convenient place, then use port extensions to compensate for the time delay
(phase shift) to the desired reference plane. On the FieldFox, port extensions
does not compensate for the loss of the additional electrical length, nor any
mismatch errors beyond the calibration reference plane.
Also use port extensions if you have already performed a calibration, and then
decide that you need to add a length of transmission line in the measurement
configuration. Use port extensions to "tell" the FieldFox that you have added
the length to a specific port.
Port extensions and Electrical Delay differ in the following ways:
— Electrical delay is applied to a specific trace.
— Port extensions are applied to specific trace.
Port Extensions and Electrical Delay can be set independently. When both are
set, the delay adds together. Learn more about Electrical Delay in
Delay" on page
How to apply Port Extensions
— Press Meas Setup 4.
— Then
— Then
— Then
— Then enter time value using the numeric keypad, the
rotary knob. Press
You can also set Port Extensions by pressing Meas Setup 4 then
(settings).
5- 16
5-10.
Port Extensions.
Port Extensions ON.
Port1 Extension.
Enter or select a seconds (time) multiplier.
arrows, or the
Calibration
Keysight N9912-90001 User's Guide
"Electrical