Frequency Range; Scale Settings - Agilent Technologies FieldFox N9912A User Manual

NOTE Phase is unwrapped by comparing the phase from one data point to the next. If
the phase difference between two data points is greater than 180 degrees, or if
the phase of the first data point is greater than 180 degrees from DC, than the
phase measurement is probably NOT accurate. Increase the resolution setting to
ensure that the phase measurement is accurate.
In Smith and Polar formats, marker format can be changed to display (Mag &
Phase) or (R + jX). Learn how to set marker format on page 125.

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 54.
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
 After using the ▲|▼ arrows or the rotary knob, press Enter. The increment
 After using the keypad, select a multiplier key. Learn about multiplier

Scale Settings

Adjust the Y-axis scale to see the relevant portions of the data trace. The Y-axis is
divided into 10 graticules.
This setting can be changed at any time without affecting calibration accuracy.
How to set Scale
 Press Scale / Amptd .
 Then choose from the following methods:
1.
2.
3. Set Scale, Reference Level, and Reference Position
NA (Network Analyzer) Mode
and frequencies – Specify the beginning and end of the sweep.
Start Stop
and frequencies - Specify the center frequency and span of
Center Span
frequencies (half on either side of center).
the rotary knob.
setting of the arrows is based on the current span and can NOT be changed in
NA Mode.
abbreviations on page 18.
Automatically adjusts the Y-axis to comfortably fit the Min and
Autoscale
Max amplitude of the trace on the screen.
Autoscales all of the traces on the screen, useful only for
Autoscale All
multi-trace configurations.
Manually enter a scale per division to view specific areas of the trace.
Scale
o
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