Keysight N9915-90020 User’s Guide 221
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
Channel Measurements
— With Units = CHAN selected, the FieldFox chooses either the uplink or
downlink band, and displays that range of frequencies. You can then tune
within that Standard using Start CHAN, Stop CHAN, or Center CHAN. The
X-axis annotation indicates the frequency range.
When you first select a Channel Measurement, then select a Radio Standard,
the BW, Offset, RRC, Integration BW, and Span settings are changed to those
of the standard. In addition, Res BW can also change when set to
‘Auto(couple)’. However, center frequency is NOT changed unless you first
select Units = CHAN.
Measurement Preset
Measurement Preset allows you to easily reset any of the channel
measurements to its default settings. The Center Frequency, Preamp ON|OFF,
RF Attenuation, Markers, Limits, and Radio Standard settings are NOT reset.
How to select Measurement Preset:
—Press Preset
> Mode Preset
Averaging
By default in ALL Channel measurements, averaging is enabled and set to
display the average of the last 15 measurements. When enabled, this average
setting is automatically making the following ‘averaging’ settings in order to
provide the most accurate power measurements:
— Averaging Type is set to Power.
— Trace State is set to Average.
— Detector is set to Average.
— Count is set to 15.
Any of these settings can be changed manually during a Channel
measurement. Learn more about these settings starting in
“Average Type” on
page 204
.
To change Averaging:
1. Press Meas Setup 4
.
2. Then
Average Enable ON OFF OFF effectively sets the Average Count to 1.
3. Then
Average Count
4. Enter a value between 1 and 10,000 using the numeric keypad,
arrows, or the rotary knob.
5. Press Enter
.
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