Rohde & Schwarz SMIQ02B - Frequency Modulation

SMIQ Analog Modulations
1125.5555.03 E-82.61
2.7.3 Frequency Modulation
Menu ANALOG MOD-FM offers access to settings for frequency modulation.
Note: The FM and PM modulations cannot be set simultaneously and deactivate one another:
Menu selection: ANALOG MOD-FM
FREQ
100. 000 000 0
MHz
LEVEL
- 30.0
dBm
FM1 DEVIATION
FM1 SOURCE
LFGEN FREQ
FM2 DEVIATION
FM2 SOURCE
EXT1 COUPLING
EXT2 COUPLING
PREEMPHASIS
FREQUENCY
LEVEL
ANALOG MOD
VECTOR MOD
DIGITAL MOD
DIGITAL STD
LF OUTPUT
SWEEP
LIST
MEM SEQ
UTILITIES
AM
BB-AM
FM
PM
PULSE
10.0 kHz
OFF INT EXT1 EXT2
1.000 0 kHz
10.0 kHz
OFF EXT1 EXT2
AC DC
AC DC
OFF 50µ 75µ s
Fig. 2-28 Menu ANALOG MOD-FM (preset setting), fitted with option SM-B5, FM/PM-modulator
FM1 DEVIATION
Input value of the deviation for FM1.
IEC/IEEE-bus command SOUR:FM1 10kHz
FM1 SOURCE
Switching on and off FM1 and selection of the modulation source.
IEC/IEEE-bus command SOUR:FM1:SOUR INT; STAT ON
LFGEN FREQ
Input value of the frequency of the 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
EXT1 COUPLING
Selection of the type of coupling AC or DC for the external input EXT1.
IEC/IEEE-bus command SOUR:FM1:EXT1:COUP AC
EXT2 COUPLING
Selection of the type of coupling AC or DC for the external input EXT2.
IEC/IEEE-bus command SOUR:FM1:EXT2:COUP AC
PREEMPHASIS
Selection of the preemphasis
IEC-bus short command SOUR:FM1:PRE 50us