Keysight N9912A User Manual page 80

Independent Source/Tracking Generator
A tracking generator, a popular option with Spectrum Analyzers, is a source which
always tracks the SA receiver.
Like a traditional tracking generator, the Independent Source feature can set the
internal FieldFox source to track the SA receiver frequency range. It can also set the
internal source to a CW frequency that is independent of the SA frequency.
Independent Source can be enabled ONLY when the FieldFox is in SA mode.
To view the internal source, you must connect a cable or device between the RF OUT
connector and the RF IN connector.
NOTES The FieldFox output power is approximate and NOT flat across the frequency range.
How to make Independent Source Settings
 Press Measure 1.
 Then




NOTE 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 about Battery Saver on page 176.)
 Press System 7
 Then
80
Source
Source Enable ON OFF
Turns ON the internal source.
ON
o
Turns OFF the internal source.
OFF
o
Choose from the following:
Source Mode
The internal source sweeps simultaneously (tracks) with the SA
Tracking
o
receiver over the displayed frequency range, emulating NA mode
measurements.
Src
The source is set to a CW frequency independent from the SA setting.
CW
o
is annotated on the screen.
Srcw
The source is set to a CW frequency, but that frequency "tracks"
Coupled CW
o
the SA receiver Center Frequency setting. Therefore, the signal always appears
at center of the display.

Normalize ON OFF
Normalize ON stores the current measurement trace into Trace 4 in View state as
a reference trace. All subsequent trace measurements subtract out this Trace 4
reference trace, and therefore become relative to it. This causes measurements to
appear near the ZERO absolute level on the y-axis (0 dBm if UNIT is set to
dBm). is annotated on the screen. Normalize is automatically turned OFF
SrcN
when the frequency range or Resolution is changed. Learn more about Trace
Display States on page 87.
Sets the source attenuation from 0 to 31 dB in 1 dB steps. This
Source Atten
effectively sets the source output power. While changing the source attenuation,
the approximate Nominal Output power is annotated to the right of the active
entry setting.
Sets the CW frequency that is used when Source Mode is set
Source CW Freq
to CW.
Preferences
is annotated on the screen.
is annotated on the screen.
Srcp
With Source Enable ON and Source Mode = Tracking,
FieldFox User's Guide