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SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
Channel Measurements
When Channel Power is selected, the following settings are maintained from a
previous measurement: Center Frequency, Preamp ON|OFF, and RF
Attenuation.
Integration Bandwidth
When Channel Power is selected, vertical posts appear on the display to mark
the current Integration Bandwidth setting. The displayed Channel Power and
Power Spectral Density values are measured and calculated over the specified
Integration Bandwidth.
By default, the displayed frequency span is automatically coupled to the
Integration Bandwidth. As you change the Integration Bandwidth, the
frequency span is adjusted so that the vertical posts appear to NOT move.
However, when you manually change the frequency span, the Integration
Bandwidth is no longer coupled to the frequency span.
When a Radio Standard is selected, the appropriate Integration Bandwidth is
"Radio Standard" on
set automatically. Learn more about Radio Standards in
page
155.
To change Integration Bandwidth:
1. Press Meas Setup 4 >
Integrating BW
(Integrating Bandwidth)
2. Enter a value between 100 Hz and 5 GHz using the numeric keypad,
arrows, or the rotary knob.
3. Press Enter
Other Channel Power Settings
All relevant FieldFox settings are made automatically to ensure the highest
accuracy, such as ResBW, VideoBW, and sweep (SwpAcquisition) speed.
These, and all other SA Mode settings, can be changed manually in a Channel
Power measurement.
"Measurement Preset" on page
221.
— Learn about Measurement Preset in
— Learn about Averaging in
"Averaging" on page
221.
"RRC Weighting" on page
229.
— Learn about RRC Weighting in
Occupied Bandwidth
Occupied Bandwidth measures the power of the displayed frequency span and
displays vertical posts at the frequencies between which the specified
percentage of the power is contained. The frequency span between the two
vertical posts is the Occupied Bandwidth. The Occupied Power, the power that
is contained between the two posts, is also displayed in dBm.
Keysight N9915-90020 User's Guide
223
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