Measuring L=R Fm Stereo/Rds Signals - Keysight N9030A Measurement Manual

Measuring L=R FM Stereo/RDS Signals

The parameters of the signal under test are as below.
FM reference deviation: 75 kHz
Pilot deviation:
Pilot frequency: 19 kHz
Stereo frequency: 38 kHz
Left = Right tone: 1.0 kHz
RDS deviation:
RDS frequency: 57 kHz
Step
1 Select Analog Demod
mode.
2 Preset the mode.
3 Select FM Stereo/RDS
measurement.
4 Set the center frequency to
the center of the signal and
set the AF stop frequency.
5 Set the FM reference
deviation.
6 View the measurement
result of the multiplexed
signal.
Demodulating AM, FM, ΦM, FM Stereo/RDS Signals
10%
6%
Action
Press Mode, Analog Demod.
Press Mode Preset.
Press Meas, FM Stereo/RDS.
Press FREQ Channel, Center
Freq, 98, MHz.
Press FREQ Channel, AF Stop
Freq, 65, kHz.
Press Meas Setup, Advanced,
Ref Deviation, 75, kHz.
Press View/Display, MPX.
19
Demodulating an FM Stereo/RDS Signal
Notes
AF start frequency and AF stop
frequency settings determine the
span of the X axis in AF Spectrum
window in MPX, Mono, Stereo, Left,
and Right views.
To display only the current trace in
the Demod Waveform window,
press Meas Setup and toggle
Avg/Hold Num to Off.