Rohde & Schwarz SME02 - Page 262

SOURce:DM SME
1038.6002.02 3.46 E-13
:SOURce]:DM:QPSK:STANdard
:DM:QPSK:STANdard TETRa :DM:QPSK:TYPE PI4Dqpsk
:DM:QPSK:BRATe 36 kb/s
:DM:QPSK:CODing NADC
:DM:QPSK:FILTer SCOS, 0.35
:DM:QPSK:POLarity NORM
:DM:QPSK:STANdard TFTS :DM:QPSK:TYPE PI4Dqpsk
:DM:QPSK:BRATe 44.2 kb/s
:DM:QPSK:CODing TFTS
:DM:QPSK:FILTer SCOS, 0.4
:DM:QPSK:POLarity NORM
:DM:QPSK:STANdard MSAT :DM:QPSK:TYPE QPSK
:DM:QPSK:BRATe 6.75 kb/s
:DM:QPSK:CODing MSAT
:DM:QPSK:FILTer SCOS, 0.6
:DM:QPSK:POLarity NORM
:DM:QPSK:STANdard INMarsat :DM:QPSK:TYPE 0QPSk
:DM:QPSK:BRATe 8 kb/s
:DM:QPSK:CODing INMarsat
:DM:QPSK:FILTer SCOS, 0.6
:DM:QPSK:POLarity NORM
Example: :SOUR:DM:QPSK:STAN PDC
[:SOURce]:DM:QPSK:TYPE QPSK | 0QPSk | PI4Qpsk | PI4Dqpsk
The command specifies the used QPSK modulation type in detail.
Example: :SOUR:DM:QPSK:TYPE QPSK *RST value is PI4Dqpsk
[:SOURce]:DM:QPSK:BRATe 1 to 24.3 kb/s and 27.0 to 48.6 kb/s
The command indicates the bit rate for the modulation in bits per second. The resolution is 100
b/s. *RST value is 48.6 kb/s
Example: :SOUR:DM:QPSK:BRAT 42kb/s
[:SOURce]:DM:QPSK:CODing NADC | PDC | TFTS | TETRa | APCO | MSAT | INMarsat
The command specifies the coding between the binary data and the generated signal (difference
coding).
Example: :SOUR:DM:QPSK:COD NADC *RST value is NADC
[:SOURce]:DM:QPSK:FILTer COSine|SCOSine , 0.35|0.4|0.5|0.6 | COSine, 0.2
The command specifies the filter characteristics (characteristic and "roll-off factor"). Values
COSine (cosine) and SCOSine (square root cosine) are permissible for characteristic. For roll-off,
0.2, 0.35, 0.4, 0.5 and 0.6 are permissible.
Example: :SOUR:DM:QPSK:FILT COS,0.35. *RST value is SCOSine, 0.35
[:SOURce]:DM:QPSK:POLarity NORMal | INVerted
The command specifies the polarity of the modulation.
NORMal A "1" from the data source generates a positive deviation
INVerted A "1" from the data source generates a negative deviation
Example: :SOUR:DM:QPSK:POL NORM *RST value is NORMal