Rohde & Schwarz R&S SMW-K116 DVB-S2/S2X, User Manual

Page: 18 / 106

DVB configuration and settings
R&S
®
SMW-K52/-K116
18 User Manual 1175.6778.02 ─ 19
Remote command:
[:SOURce<hw>]:BB:DVB:DVBH|DVBT[:HP|LP]:DATA
on page 73
[:SOURce<hw>]:BB:DVB:DVBH|DVBT[:HP|LP]:DATA:DSELection
on page 74
PN Scrambler
Activates PN scrambling. The data packets of the incoming transport stream are trans-
formed to a pseudo random binary sequence (PRBS). This transformation is performed
to obtain a bit sequence that has a positive effect on the transmitted RF spectrum.
Remote command:
[:SOURce<hw>]:BB:DVB:DVBH|DVBT[:HP|LP]:PNSCrambler[:STATe]
on page 75
Outer Coder (RS)
Activates the outer coder. The outer coder applies a Reed-Solomon error correction
code to the PRBS data stream.
Remote command:
[:SOURce<hw>]:BB:DVB:DVBH|DVBT[:HP|LP]:OCODer[:STATe]
on page 74
Outer Interleaver
Activates the outer convolutional interleaver.
Remote command:
[:SOURce<hw>]:BB:DVB:DVBH|DVBT[:HP|LP]:OINTerleaver[:STATe]
on page 75
Inner Coder
Activates the inner coder. The inner coder is a punctured convolutional error-correcting
coder.
Remote command:
[:SOURce<hw>]:BB:DVB:DVBH|DVBT[:HP|LP]:ICODer[:STATe]
on page 74
Rate
If "Inner Coder > On", selects the code rate of the inner coder.
For encoding incoming bits (m), the inner coder transforms the bits into a bit symbol
containing n bits. The ratio m/n is the code rate.
Remote command:
[:SOURce<hw>]:BB:DVB:DVBH|DVBT[:HP|LP]:ICODer:RATE
on page 74
Inner Bit Interleaver
Activates the inner bit interleaver.
The inner interleaver consists of a bit-wise interleaving followed by symbol interleaving.
Both interleaving processes are block based.
Remote command:
[:SOURce<hw>]:BB:DVB:DVBH|DVBT:IINTerleaver:BIT[:STATe]
on page 75
Inner Symbol Interleaver
Activates the inner symbol interleaver.
DVB-T/DVB-H system settings