Rohde & Schwarz SME02 - FM Frequency Response; FM Frequency Response up to 100 Khz; FM Frequency Response up to 2 Mhz

SME Test Procedure
1038.6002.02 5.23 E-13
5.2.22 FM Frequency Response
5.2.22.1 FM Frequency Response up to 100 kHz
Test equipment
Test system 5.1.1.2
Measurement
À Settings at the SME
- Test frequency 100 MHz
- Level 0 dBm
- Select EXT1 in the MODULATION/FM/FM1 SOURCE menu,
- Deviation 50 kHz .
À Setting at the audio analyze
- Generator level 1 V(v
peak
) .
À Determine the modulation frequency response (difference between
the highest and lowest modulation depth) by varying the generator
frequency of the audio analyzer from 10Hz to 100kHz.
Modulation frequency response .................................... max. 0.5 dB
À Repeat measurement when frequency is fed at socket EXT2 and
with setting MODULATION/FM/FM2 SOURCE EXT2.
Note: If option SM-B2 LF generator is fitted, LFGEN2 can be selected in the MODULATION/FM FM2
SOURCE menu and the test frequency be set using the internal generator for this
measurement.
5.2.22.2 FM Frequency Response up to 2 MHz
Test equipment
Test system 5.1.1.3
Test system 5.1.1.6 (SME06)
Measurement
À Setting at the SME
- Select EXT1 in the MODULATION/FM/FM1/SOURCE menu.
À Vary the frequency from 10Hz to 2 MHz and measure the
modulation frequency response (difference between highest and
lowest modulation depth) using an AC voltmeter at the sine-wave
generator.
Modulation frequency response ........................................max. 3 dB
À Repeat measurement when frequency is fed at socket EXT2 and
with setting MODULATION/FM/FM2 SOURCE EXT2.
Settings recommended
F (RF)
50 MHz 750.1 MHz 1099 MHz 1101 MHz 1500 MHz 3000 MHz 6000 MHz
Deviation
125 kHz 250 kHz 250 kHz 250 kHz 250 kHz 250 kHz 250 kHz
Mixer
XXXX X X
F (LO)
800.1 MHz 1149 MHz 1151 MHz 1550 MHz 2950 MHz (SME03/06) 5950 MHz (SME06)