Agilent Technologies FieldFox N9923A User Manual page 24

NOTE Learn more about Display Format at the FieldFox Supplemental User‟s Guide:
http://na.tm.agilent.com/fieldfox/help/
This setting can be changed at any time without affecting calibration accuracy.
How to select a NA Format
 Press Measure 1.
 Then
 Then choose from the following:
In Smith and Polar formats, markers can be changed to display (Mag & Phase) or
(R + jX). Learn how to change marker format on page 79.
Frequency Range
Set the range of frequencies over which you would like to make measurements.
When the frequency range is changed after a calibration is performed, the cal
becomes interpolated. Learn more on page 51.
How to set Frequency Range
This can be done in two ways:
 Press Freq/Dist
 Then choose from the following:
1.
2.
 Follow each by entering a value using the numeric keypad, the ▲|▼ arrows, or
24
Format [current
Displays magnitude in dB
Log Magnitude
o
Displays positive values only. Y-axis: Unitless (U) for ratioed
Linear
o
measurements; Watts (W) for unratioed measurements.
Used mainly for S11 and S22. Displays unitless reflection data.
VSWR
o
Phase Displays phase in degrees. The trace „wraps‟ every 360 degrees, from
o
+180 to –180, for easy scaling.
Used mainly for S11 and S22. Displays series resistance and
Smith
o
reactance.
then...
More
o
Used mainly for S11 and S22. Displays magnitude and phase of the
Polar
o
reflection coefficient.
Used mainly for S21 and S12. Displays signal transmission
Group Delay
o
(propagation) time through a device in seconds. The Group Delay aperture is
the current Smoothing aperture. Default is 1.5 % of the X-axis.
Learn how to set Smoothing aperture on page 27.
o
Learn more about Group Delay measurements at the FieldFox
o
Supplemental User‟s Guide:
Start and Stop frequencies – Specify the beginning and end of the sweep.
and frequencies - Specify the center frequency and span of
Center Span
frequencies (half on either side of center).
the rotary knob.
setting].
http://na.tm.agilent.com/fieldfox/help/
N9923A FieldFox User's Guide