Rohde & Schwarz SME02 - Frequency Modulation

Analog Modulations SME
1038.6002.02 2.56 E-13
2.6.2.3 Frequency Modulation
Menu MODULATION-FM offers access to settings for frequency modulation.
Note: The following modulations cannot be set simultaneously and deactivate one another:
FM and PM; FM2 and STEREO; FM2 SOURCE = LFGEN2 and VOR, ILS, MKR BCN
Menu selection: MODULATION-FM
FREQUENCY
LEVEL
MODULATION
DIGITAL MOD
LF OUTPUT
SWEEP
LIST
MEM SEQ
UTILITIES
HELP
AM
FM
PM
PULSE
FREQ
100. 000 000 0
MHz
LEVEL
- 30.0
dBm
10.0 kHz
OFF LFGEN1 EXT1 EXT2
0.4k 1k 3k 15k Hz
10.0 kHz
OFF LFGEN2 EXT1 EXT2
1.000 0 kHz
SIN SQR TRI NOI
AC DC
AC DC
OFF 50µ 75µ s
FM1 DEVIATION
FM1 SOURCE
LFGEN1 FREQ
FM2 DEVIATION
FM2 SOURCE
LFGEN2 FREQ
LFGEN2 SHAPE
EXT1 COUPLING
EXT2 COUPLING
PREEMPHASIS
Fig. 2-25 Menu MODULATION-FM (preset setting), fitted with option SM-B2, LF-generator
(LFGEN2) and option SM-B5, FM/PM-modulator
FM1 DEVIATION
Input value of the deviation for FM1.
IEC-bus command SOUR:FM1 10kHz
FM1 SOURCE
Switching on and off FM1 and selection of the modulation source.
IEC-bus command SOUR:FM1:SOUR INT; STAT ON
LFGEN1 FREQ
Selection of the frequency of the 1st LF generator.
EC-bus short command SOUR:FM1:INT:FREQ 1kHz
FM2 DEVIATION
Input value of the deviation for FM2.
EC-bus short command SOUR:FM2 10kHz
FM2 SOURCE
Switching on and off FM2 and selection of the modulation source.
EC-bus short command SOUR:FM2:STAT OFF
LFGEN2 FREQ
Input value of the LFGEN2 frequency.
EC-bus short command SOUR:FM2:INT:FREQ 1kHz
LFGEN2 SHAPE
Selection of the waveform of the 2nd LF generator.
EC-bus short command SOUR:SOUR2:FUNC SIN
EXT1 COUPLING
Selection of the type of coupling AC or DC for the external input EXT1.
IEC-bus command SOUR:FM1:EXT1:COUP AC