Resolution Bandwidth (Res Bw) - Keysight N9912A User Manual

SA (Spectrum Analyzer) Mode
SA Mode Settings
— Source CW Freq
set to CW.
By default, the source output will turn off momentarily at the end of each
SA sweep. To cause the source to stay ON at the end of each sweep, turn
battery saver OFF. (Learn more in
Setting Battery Saver to OFF
— Press System 7.
— Then Preferences.
— Then

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
Times" on page
How to set Res BW
— Press BW 2.
— Then
— Then choose from the following:
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/Data
The Res BW setting also affects the Sweep Type setting. Learn how in
"Sweep Type" on page 8-21
8- 20
Sets the CW frequency that is used when Source Mode is
Battery Saver OFF.
8-23.
Res BW Auto | Man.
—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
or the rotary knob. Then press a multiplier if necessary or press Enter
Sheet".
"Battery Saver" on page
.
Keysight N9912-90001 User's Guide
18-10.)
"Very Long Sweep
arrows,
Appendix B:,