Rohde & Schwarz SML01 - Page 270

Test sequence R&S®SML / R&S®SMV03
1090.3123.12 10.20 E-6
Settings with option B3 - FREQ:
only test frequencies > 10 MHz
Settings on the test receiver - Demodulation: AM
- D
etector: Peak
Measurement  First, at AM deviation test frequencies and with test levels 2.1 dBm
(R&S SML02/03: 0.1 dBm) and 5 dBm, test the deviation setting from
10 % to 95 %.
Then at deviation = 80 % and test level 8 dBm (R&S SML02/03: 6 dBm)
traverse the frequency range from 100 kHz to f
max
in steps of 60 MHz.
 Read off the deviation from the test receiver.
AM frequency response
Test setup  Test setup 1, demodulator mode
Settings on the R&S
SML01
- LEVEL:
3 dBm
with R&S SML-B10: 13 dBm
- FREQ:
500 kHz, 5.1 MHz, 1100 MHz
- MODULATION  AM  AM DEPTH: 60 %
AM SOURCE: LFGen
LFGenFreq = 10 Hz to 50 kHz
Settings on the R&S
SML02/03 / R&S SMV03
- LEVEL:
3 dBm
with R&S SML-B10: 13 dBm
- FREQ:
in addition to the test frequencies for R&S SML01
1211 MHz, 2200 MHz, 3300 MHz
- MODULATION  AM  AM DEPTH: 60 %
AM SOURCE: LFGen
LFGenFreq = 10 Hz to 50 kHz
Settings with option B3 - FREQ:
only test frequencies > 10 MHz
-
Settings on the test receiver - D
emodulation: AM
- D
etector: Peak
Measurement  Determine the modulation frequency response by varying the LF
generator frequency.
 Repeat the measurement using an external sinewave generator with
the setting MODULATION  AM  AM SOURCE: EXT (sinewave
generator setting: 1 V
s
).
 The modulation frequency response is the difference between the
highest and lowest modulation depth.