Keysight N9927-90001 User’s Guide 163
SA (Spectrum Analyzer) Mode
SA Mode Settings
— Press
System 7
— Then
Preferences
— Then
Preferences
— In the table, select Battery Saver. Press
Edit
then
Battery Saver ON OFF
To suspend InstAlign: (Learn more in
— Press
Cal 5
— Then
Amptd Alignment OFF
Resolution Bandwidth (Res BW)
In SA Mode, the Res BW provides the ability to resolve, or see closely spaced
signals. The narrower (lower) the Res BW, the better the spectrum analyzer can
resolve signals. In addition, as the Res BW is narrowed, less noise is measured
by the spectrum analyzer ADC and the noise floor on the display lowers as a
result. This allows low level signals to be seen and measured. However, as the
Res BW is narrowed, the sweep speed becomes slower. See
.
How to set Res BW
— Press
BW 2
.
— Then
Res BW
.
— Then choose from the following:
—
Auto
Res BW is coupled to the frequency span. As the frequency span
is narrowed, the Res BW is also narrowed providing increased ability
to resolve signals.
To change this setting from
Man
to
Auto
, press
Res BW
twice.
—
Man
Enter a Res BW value using the numeric keypad, the
arrows,
or the rotary knob. Then press a multiplier if necessary or press
Enter
The current Res BW setting is shown at the bottom of the screen.
#Res BW x.xx XHz
(#) means manual setting.
This setting could impact the accuracy of the measurement. See Specifications
in Appendix B.
The Res BW setting also affects the Sweep Type setting. Learn how in
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