Rohde & Schwarz SML01 - Frequency Modulation

Test sequence R&S®SML / R&S®SMV03
1090.3123.12 10.22 E-6
Spurious PhiM in AM
Test setup  Test setup 1, demodulator mode
Settings on the R&S
SML01
- LEVEL: 2.1 dBm
with R&S SML-B10: 12.1 dBm
- FREQ:
77 MHz, 1100 MHz
- MODULATION  AM  AM DEPTH: 30 %
AM SOURCE: LFGen
LFGenFreq = 1 kHz
Settings on the R&S
SML02/03 / R&S SMV03
- LEVEL: 8 dBm
with R&S SML-B10: 18 dBm
- FREQ:
in addition to the test frequencies for R&S SML01:
2200 MHz, 3300 MHz
- MODULATION  AM  AM DEPTH: 30 %
AM SOURCE: LFGen
LFGenFreq = 1 kHz
Settings on the test receiver - D
emodulation: PM
- D
etector: Peak
Measurement  On the test receiver measure the resulting phase modulation with
100 kHz lowpass filter and peak analysis.
Frequency modulation
FM deviation setting
Test setup  Test setup 1, demodulator mode
Settings on R&S SML /
R&S SMV03
- LEVEL: 0 dBm
- FREQ: 1 GHz
- MODULATION  FM  FM DEVIATION: 100 kHz
FM SOURCE: LFGen
LFGenFreq = 1 kHz
Settings on the test receiver - D
emodulation: FM
- D
etector: Peak
- Filter: 20 Hz to 23 kHz
(for the moment measurement must still be carried out with 50 Hz /
100 kHz, since filters are not yet implemented)
Measurement  Read off the frequency deviation from the test receiver
Note: Since the R&S SML / R&S SMV03 has a purely digital deviation generator, it is adequate
to test its functionality by taking a measurement at one deviation setting and one frequency
only.