Keysight Technologies C Series - Page 176

176 Keysight N9915-90020 User’s Guide
SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)FUTURE
SA Mode Settings
— AM – AM (double sideband). Displayed values for AM Modulation
(metrics) – (i.e., includes AM Mod Depth, AM Demod Waveform,
SINAD, THD, Carrier Power, Carrier Freq, Modulation rate).
—
AM SSB – AM single sideband. Displayed values for AM SSB
(metrics) – (i.e., includes SSB RMS Level, SSD Demod Waveform,
SINAD, THD, RF Power, Modulation rate).
— FM – Displayed values for FM Modulation (metrics) (i.e., includes
Freq Deviation, FM Demod Waveform (Time)/Spectrum (Frequency),
Carrier Power, Carrier Freq, Modulation Rate, SINAD, THD).
—
FM Stereo / RDS – Displayed values for FM Stereo / RDS (Radio
Design System); (Metrics) – (i.e., includes Freq Deviation, FM Demod
Waveform (Time)/Spectrum (Frequency), Carrier Power, Carrier Freq,
Modulation Rate, SINAD, THD, Dist/ Total VRMS).
— PM – Displayed values for PM Modulation Metrics (i.e., includes PM
Deviation, PM Demod Waveform, SINAD, THD, Carrier Power, Carrier
Freq, Modulation Rate).
—
Tune & Listen OFF – Opens a menu of Tune & Listen demod softkeys. Tune
& Listen can be set when you are in Analog Demodulation mode, so you can
enable Tune & Listen sweeps in between your Analog Demod sweeps. To
learn more about the Tune & Listen softkey menu choices, refer to
“Tune &
Listen (AM/FM)” on page 170
.
See also,
“How to make Analog Demodulation (Metrics) Settings” on
page 176.
How to make Analog Demodulation (Metrics) Settings
The following softkeys are available when one of the Analog Demodulation
metrics measurements is pressed. See also,
“How to select Tune & Listen” on
page 171
.
If AM DSB, choose from:
—
AM Top Y
– Determines the Y axis percentage (0% to ±100%) of the AM
demodulation waveform is displayed (Default = 100%).
If AM SSB, choose from:
—
SSB Top Y – Determines the Y axis voltage (0 nV to ±100mV) of the AM
SSB demodulation waveform is displayed (Default = 100 mV).
When FM Stereo /RDS is selected as the demodulation type, a Warning
message is displayed for a few seconds at the start of the sweep; the
sweep is 30 to 50 seconds long.
The message reads:
"Warning: Slow Measurement. RDS Measurement in Progress."