R&S SMB Test Procedures
1407.0806.82 1.39 E-5
Synchronous AM with FM
Test assembly See section "Standard Test Assembly for Analog Modulations",
page 1.3.
Measurement Settings on DUT:
RF On
L
evel 0 dBm
Frequency Modulation menu:
State on
FM Source Internal
FM Mode Normal
FM deviation 40 kHz
LFGen Frequency 1 kHz.
Settings on spectrum analyzer
AMPTD / REF LEVEL 6 dBm
FREQ / CENTER test frequency
FMDEMOD,
FMDEMOD ON,
RESULT DISPLAY / AM / AF Spectrum
AF Start = 0 Hz
AF Stop = 5 kHz
RES BW = 30 Hz
DEMOD BW = 100 kHz
IF BW MANUAL 10 MHz,
RANGE / REFERENCE VALUE 0.2 %
MEAS TIME 3 ms
Read the AM depth at 1 kHz modulation frequency from the
demodulated AF spectrum.
Recommended settings
CF sweep
Recommended test frequencies: 23.4 MHz, 375 MHz, 500 MHz,
750 MHz, 1100 MHz, 2200 MHz, 3200 MHz, 6 GHz
To Next Page
Loading...
