SME Digital Modulation
1038.6002.02 2.97 E-13
2.6.3.9 4FSK Modulation
Menu DIGITAL MOD - 4FSK offers access to settings for 4FSK modulation. The maximum setting
depends on the carrier frequency:
Carrier frequency Maximum deviation
< 130 MHz 100 kHz
130 to 187.5 MHz 25 kHz
187.5 to 375 MHz 50 kHz
375 to 750 MHz 100 kHz
750 to 1500 MHz 200 kHz
1500 to 3000 MHz 400 kHz
3000 to 6000 MHz 800 kHz
Menu selection DIGITAL MOD - 4FSK
FREQUENCY
LEVEL
MODULATION
DIGITAL MOD
LF OUTPUT
SWEEP
LIST
MEM SEQ
UTILITIES
HELP
GMSK
GFSK
QPSK
FSK
4FSK
FFSK
FREQ
100. 000 000 0
MHz
L
E
V
EL
dBm
SOURCE
OFF EXT PRBS DATA
PRBS 9 15 20 21 23 Bit
CLOCK... POS /COUPLED /SYMBOL
LEVEL ATTENUATION MODE OFF NORM MAX
LEVEL ATTENUATION 0.0 dB
MODE AUTO SINGLE
SELECT STANDARD... CURRENT: ERMES
DEVIATION 4.688 kHz
BIT RATE 6250 bps
FILTER... BESSEL B*T=1.25
CODING... ERMES
MOD POLARITY NORM INV
SELECT LIST... CURRENT: DLIST5
DELETE LIST...
FUNCTION FIIL INSERT DELETE EDIT/VIEV
- 30.0
Fig. 2-46 Menu DIGITAL MOD - 4FSK (preset setting), fitted with option SM-B11, DM coder
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