SME SOURce:DM
1038.6002.02 3.41 E-133
[:SOURce]:DM[:BASic]:PRBS:LENGth 9 | 15 | 20 | 21 | 23
The command specifies the length of the pseudo random sequence according to the following
equation:
Length = (2
LENGth)
-1
Example: :SOUR:DM:BAS:PRBS:LENG 9 *RST value is 9 Bit
:SOURce]:DM:COMPlex:CLOCk:SOURce INT | EXT
The command selects the clock source for radiocommunication services ERMes, FLEX, REFLEX
and POCSag.
INT The clock required for signal generation is generated internally. The CLOCK
connector is switched to be an output.
EXT The clock required for signal generation is applied to the CLOCK connector.
Example: :SOUR:DM:COMP:CLOC:SOUR INT *RST value is INT
[:SOURce]:DM:GMSK
The commands to set the data source for the digital type of modulation GMSK are under this
node. GMSK (Gaussian M
inimum Shift Keying) always has exactly two states. The bit rate of the
data source is fixedly set, the phase displacement as well.
[:SOURce]:DM:GMSK:STANdard GSM|PCN | CDPD | MC9 | MOBitex | MD24N | MD24W | MD36N |
MD36W | MD48N | MD48W | MD80W | MD96N | MD96W |
MD100W | MD120W | DSRR | DSRR4K
This short-form command sets the 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 has no query form or *RST value.
Short command Command sequence
:DM:GMSK:STANdard GSM | PCN
:DM:GMSK:FILTer 0,3
:DM:GMSK:BRATe 270,833kb/s
:DM:GMSK:DCODer ON
:DM:GMSK:POLarity NORM
:DM:GMSK:STANdard CDPD | MD192
:DM:GMSK:FILTer 0,5
:DM:GMSK:BRATe 19,2 kb/s
:DM:GMSK:DCODer OFF
:DM:GMSK:POLarity NORM
:DM:GMSK:STANdard MC9
:DM:GMSK:FILTer 0,3
:DM:GMSK:BRATe 8 kb/s
:DM:GMSK:DCODer ON
:DM:GMSK:POLarity NORM
:DM:GMSK:STANdard MOBitex | MD80N
:DM:GMSK:FILTer 0,3
:DM:GMSK:BRATe 8 kb/s
:DM:GMSK:DCODer OFF
:DM:GMSK:POLarity NORM
:DM:GMSK:STANdard MD24N :DM:GMSK:FILTer 0,3
:DM:GMSK:BRATe 2,4 kb/s
:DM:GMSK:DCODer OFF
:DM:GMSK:POLarity NORM
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