SME SOURce:DM
1038.6002.02 3.43 E-133
[:SOURce]:DM:GMSK:BRATe 2.4 kb/s to 1000 kb/s
The command sets the bit rate of the modulation. The value of SOURce:DM:GMSK: FILTer is
adapted if necessary to obtain a valid setting. Valid setting are listeted in the table to Section
"GMSK Modulation" in Chapter 2.
Example: :SOUR:DM:GMSK:BRAT 8000b/s *RST value is 270.833kb/s
[:SOURce]:DM:GMSK:DCODer ON | OFF
Command (Differential Encod
er) specifies the state coding.
ON Difference coding of the states according to regulation GSM is switched on.
OFF No difference coding. *RST value is ON
Example: :SOUR:DM:GMSK:DCOD OFF
[:SOURce]:DM:GMSK:FILTer 0.2 | 0.25 | 0.3 | 0.4 | 0.5
The command specifies B x T of the Gaussian filter used. The value of SOURce:DM:
GMSK:FILTer is adapted if necessary to obtain a valid setting.
Valid settings are listed in the table to Section "GMSK Modulation" in Chapter 2.
Example: :SOUR:DM:GMSK:FILT 0.2 *RST value is 0.3
[:SOURce]:DM:GMSK:GSLope ON | OFF
The command specifies the level reduction for the modulation.
ON The rise and fall time of the level reduction correspond to GSM power ramping.
OFF Command DM:DATA:ALEVel:MODE specifies the level reduction.
Example: :SOUR:DM:GMSK:GSL ON *RST value is OFF
[:SOURce]:DM:GMSK:POLarity NORMal | INVerted
The command specifies the polarity of the modulation.
NORMal A "1" from the data source generates a positive deviation, a "0" a negative deviation.
INVerted A "1" from the data source generates a negative deviation, a "0" a positive deviation.*RST value is N
Example: :SOUR:DM:GMSK:POL INV
[:SOURce]:DM:GFSK
The commands to set the data source for the digital type of modulation GFSK are under this node.
GFSK (Gaussian F
requency Shift Keying) always has exactly two states.
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