Keysight N9923A, User Manual, Page: 50 / 276

50 Keysight N9923-90001 User’s Guide
NA (Network Analyzer) Mode
NA Mode Settings
— Enter a time value using the numeric keypad, the arrows, or the rotary
knob.
— Press a multiplier key. Learn about multiplier abbreviations in
“Multiplier
Abbreviations” on page 34
.
Electrical Delay can also be set using the
Mkr->Delay
feature. Learn how on
“Marker Functions” on page 183
.
Phase Offset
Phase offset mathematically adjusts the phase measurement by a specified
amount, up to 360°. Use this feature in the following ways:
Improve the display of a phase measurement.
This is similar to the way you
would change the reference level in an amplitude measurement. Change the
phase response to center or align the response on the screen.
Emulate a projected phase shift in your measurement.
For example, if you
know that you need to add a cable and that the length of that cable will add a
certain phase shift to your measurement, you can use phase offset to add that
amount and simulate the complete device measurement.
You can set the phase offset independently for each measurement trace.
How to set Phase Offset
— Press
Scale / Amptd
— Then
More
— Then
Phase Offset
— Enter a value in degrees using the numeric keypad, the arrows, or the
rotary knob. Press
Enter
Averaging
Averaging helps to reduce the effects of random noise on a measurement. You
specify the number of measurements to be averaged. The more measurements
averaged, the greater the amount of noise reduction. An average counter is
shown in the left edge of the screen as
Avg <n>
where <n> is the number of
measurements that are averaged.
Averaging can be set before or after calibration. When set before calibration,
each calibration standard is measured <n> times and averaged. More time is
needed to perform the calibration, but there will be less noise in the resulting
error terms which means that subsequent measurements will also have less
noise. In addition, noise is further reduced by continuing to average after
calibration.
How to set Averaging
— Press
BW 2
.