SME SOURce:DM
1038.6002.02 3.49 E-133
[:SOURce]:DM:FSK4:CODing ERMes | APCO| MODacom | FLEX
The command specifies according to which standard the coding between binary data and
generated signal is performed.
Example: :SOUR:DM:FSK4:COD ERM *RST value is ERMes
[:SOURce]:DM:FSK4:DEViation 0.01 to 400 kHz
This command sets the frequency deviation of the modulation.
Example: :SOUR:DM:FSK4:DEV 4.6875kHz *RST value is 4687.5
[:SOURce]:DM:FSK4:FILTer BESSel, 1.22|1.25|2.44 | COS|SCOS, 0.2
This command selects the filter of the modulation.
Example: :SOUR:DM:FSK4:FILT COS, 0.2 *RST value is BESSel, 1.25
[:SOURce]:DM:FSK4:POLarity NORMal | INVerted
The command specifies the polarity of the modulation.
NORMal A "0" from the data source reduces the frequency, "1" increases it.
INVerted A "1" from the data source reduces the frequency, "0" increases it.
Example: :SOUR:DM:FSK4:POL INV *RST value is NORMal
[:SOURce]:DM:FFSK
The commands to check the two-stage modulation FFSK are under this node. An LF signal is
FSK-modulated and then serves as an input signal for an FM modulation of the actual carrier.
[:SOURce]:DM:FFSK:STANdard POCSag
This short-form command sets parameter shown in the table to the value specified by the
standard (cf. table). The command is an abbreviation of the commands listed in the table. Hence it
neither has a query form nor an *RST value.
Short command Command sequence
:DM:FSK4:STANdard POCSag :DM:FFSK:DEViation 4.5 kHz
Example: :SOUR:DM:FFSK:STAN POCS
[:SOURce]:DM:FFSK:BRATe 0.05 to 90 kb/s
This command sets the bit rate of the modulation.
Example: :SOUR:DM:FFSK:BRAT 2400 *RST value is: 1200 b/s
[:SOURce]:DM:FFSK[:DEViation] 1.5 kHz | 2.0 kHz | 3.0 kHz | 3.5 kHz | 4.0 kHz | 4.5 kHz
The command sets the frequency deviation of the modulation. *RST value is: 4.5 kHz
Example: :SOUR:DM:FFSK:DEV 100kHz
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