164 Keysight N9927-90001 User’s Guide
SA (Spectrum Analyzer) Mode
SA Mode Settings
How to make Independent Source Settings
—Press Measure 1
—Then Source
— Source Enable ON OFF
— ON Turns ON the internal source.
— OFF
Turns OFF the internal source.
— Source Mode
Choose from the following:
— Tracking
The internal source frequency can track the SA receiver.
Center frequency Src is annotated on the screen
— CW
The source is set to a CW frequency independent from the SA
settings. Srcw is annotated on the screen.
— Coupled CW
The source is set to a CW frequency, but that frequency
“tracks” the SA receiver Center Frequency settings. Therefore, the
signal always appears at center of the display. Srcp is annotated on
the screen.
— Normalize ON OFF
With Source Enable ON and Source Mode = Tracking,
Normalize ON stores the current measurement trace into Trace 4 in View
state as a reference trace. All subsequent trace measurements subtract
this Trace 4 reference trace, and therefore become relative to it. SrcN is
annotated on the screen. Normalize is automatically turned OFF when the
frequency range or Resolution is changed. Learn more about Trace Display
States in “Trace Display States (SA Mode)” on page 178.
— Source Power
Sets the source power level. Choose from:
— Leveled
Enter a value from -45 dBm to 0 dBm using the numeric
keypad, arrows, or the rotary knob
1
. The source power is
reasonably flat across the frequency span.
— MAX
The power level is set to the maximum achievable power level at
each frequency. This results in the power level NOT being flat across
the frequency span.
— Source CW Freq
Sets the CW frequency that is used when Source Mode is
set to CW.
To cause the source to stay ON at the end of each sweep, turn battery saver
OFF. (Learn more in “How to Access Individual Alignments” on page 184.)
1. N995xA/6xA cannot have the Leveled value set lower than –35 dBm.
By default, the source output will turn off momentarily at the end of each
IQA and SA sweep and also every 300 seconds during the InstAlign
process.
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