SME SOURce:DM
1038.6002.02 3.47 E-133
[:SOURce]:DM:FSK
The commands to set the data source for the digital frequency modulation are under this node.
FSK (Frequency S
hift Keying) always has exactly two states. In contrast to the other types of
modulation, there are trigger commands for FSK and FSK4 which also permit a single processing
of the data list (cf. TRIGger system, Section 3.6.16).
[:SOURce]:DM:FSK:STANdard POCSag512| POCSag1200| POCSag2400| CITYruf512|
CITYruf1200| CITYruf2400 | FLEX1600 | FLEX3200
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:FSK:STANdard POCSag512 :DM:FSK:BRATe 512
:DM:FSK:DEViation 4.5 kHz
:DM:FSK:FILTER GAUSs, 2.73
:DM:FSK:POLarity INVerted
:DM:FSK:STANdard POCSag1200 :DM:FSK:BRATe 1200
:DM:FSK:DEViation 4.5 kHz
:DM:FSK:FILTER GAUSs, 2.73
:DM:FSK:POLarity INVerted
:DM:FSK:STANdard POCSag2400 :DM:FSK:BRATe 2400
:DM:FSK:DEViation 4.5 kHz
:DM:FSK:FILTER GAUSs, 2.73
:DM:FSK:POLarity INVerted
:DM:FSK:STANdard CITYruf512 :DM:FSK:BRATe 512
:DM:FSK:DEViation 4 kHz
:DM:FSK:FILTER GAUSs, 2.73
:DM:FSK:POLarity INVerted
:DM:FSK:STANdard CITYruf1200 :DM:FSK:BRATe 1200
:DM:FSK:DEViation 4 kHz
:DM:FSK:FILTER GAUSs, 2.73
:DM:FSK:POLarity INVerted
:DM:FSK:STANdard CITYruf2400 :DM:FSK:BRATe 2400
:DM:FSK:DEViation 4 kHz
:DM:FSK:FILTER GAUSs, 2.73
:DM:FSK:POLarity INVerted
:DM:FSK:STANdard FLEX1600 :DM:FSK:BRATe 1600
:DM:FSK:DEViation 4.8 kHz
:DM:FSK:FILTER BESSel, 2.44
:DM:FSK:POLarity INVerted
:DM:FSK:STANdard FLEX3200 :DM:FSK:BRATe 3200
:DM:FSK:DEViation 4.8 kHz
:DM:FSK:FILTER BESSel, 1.22
:DM:FSK:POLarity INVerted
Example: :SOUR:DM:FSK:STAN POCS512
[:SOURce]:DM :FSK:BRATe 0.05 to 1900 kb/s (with FILTer OFF),
0.05 to 90 kb/s (with FILTer switched on)
The command sets the bit rate for the modulation in bits per second. If this value does not
correspond to the standard selected, the FILTer is deactivated automatically (OFF).
Example: :SOUR:DM:FSK:BRAT 2400 *RST value is 1200b/s
[:SOURce]:DM:FSK:DEViation 0 to 400 kHz
This command sets the frequency deviation of the modulation. If this value does not correspond to
the standard selected, the FILTer is deactivated automatically (OFF).
Example: :SOUR:DM:FSK:DEV 3kHz *RST value is 4.5 kHz
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