SOURce:DM SME
1038.6002.02 3.48 E-13
[:SOURce]:DM:FSK:FILTer GAUSs, 2.73 | BESSel, 1.22 | BESSel, 2.44 | OFF
The command activates or deactivates the selected filter. Deactivating the filter is possible at any
time. Activating the filter is only possible when values DEViation and BITRate correspond to the
standard values.
Example: :SOUR:DM:FSK:FILT GAUS,2.73 *RST value is OFF
[:SOURce]:DM:FSK:POLarity NORMal | INVerted
The command specifies the polarity of the modulation.
NORMal Logic "0" reduces the frequency, logic "1" increases it.
INVerted Logic "1" reduces the frequency, logic "0" increases it.
Example: :SOUR:DM:FSK:POL INV *RST value is NORMal
[:SOURce]:DM:FSK4
The commands to set the data source for the digital frequency modulation with exactly four states
are under this node. In contrast to the other modulations, there are trigger commands for FSK and
FSK4 which also permit a single processing of the data list.
[:SOURce]:DM:FSK4:STANdard ERMes | APCO| MODacom | FLEX3200 | FLEX6400
This short -form command sets parameters shown in the table to the values specified by the
standards (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 ERMes :DM:FSK4:BRAT 6.25 kb/s
:DM:FSK4:FILTer BESSel, 1.25
:DM:FSK4:DEViation 4.68756kHz
:DM:FSK4:STANdard APCO :DM:FSK4:BRAT 9.6 kb/s
:DM:FSK4:FILTer COS, 0.2
:DM:FSK4:DEViation 1.800kHz
:DM:FSK4:STANdard MODacom :DM:FSK4:BRAT 9.6 kb/s
:DM:FSK4:FILTer SCOS, 0.2
:DM:FSK4:DEViation 2.0kHz
:DM:FSK4:STANdard FLEX3200 :DM:FSK4:BRAT 3.2 kb/s
:DM:FSK4:FILTer BESSel, 1.22
:DM:FSK4:DEViation 4.8kHz
:DM:FSK4:STANdard FLEX6400 :DM:FSK4:BRAT 6.4 kb/s
:DM:FSK4:FILTer BESSel, 2.44
:DM:FSK4:DEViation 4.8kHz
Example: :SOUR:DM:FSK4:STAN ERM
[:SOURce]:DM:FSK4:BRATe 1 to 24.3 kb/s | 27.0 to 48.6 kb/s
The command sets the bit rate for the modulation.
Example: :SOUR:DM:FSK4:BRAT 6.25 kb/s *RST value is 6.25 kb/s
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