Rohde & Schwarz SME02 - Level Monitoring at Input EXT2 (Option SM-B5); FM Deviation Setting

Test Procedure SME
1038.6002.02 5.22 E-13
5.2.20 Level Monitoring at Input EXT2 (Option SM-B5)
Test equipment Test system 5.1.1.2
Test setup Connect the generator output of the audio analyzer to external
modulation input EXT2.
Testing
À Setting at the SME
- Select EXT2 in the MODULATION/FM/FM1 SOURCE menu.
Gen. level under 0.98 ±0.01 V(u
peak
) ..............indication EXT2 LOW
Gen. level over 1.02 ± 0.01 V(u
peak
) ..............indication EXT2 HIGH
Gen. level 0,99 to 1,01 V(
u
peak
).....................................no indication
5.2.21 FM Deviation Setting
Test equipment
Test system 5.1.1.1
Measurement
À Settings at the SME
- RF 200 MHz
- Level 0 dBm
- Select LFGEN1 in the MODULATION/FM/FM1 SOURCE menu,
- Modulation frequency
- Hub 300 Hz to 250 kHz (see below).
À Read off the FM deviation at the modulation analyzer.
Deviation of the deviation measured from the setting value
..................................................... max. 3 % of the indication +20 Hz
Recommended setting values
300 Hz ,1 , 3, 10, 30, 100 and 250 kHz.