Special Settings - R&S SMCVB-K167 User Manual

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R&S SMCVB-K167

4.4 Special Settings

Access:
► Select "Baseband > DVB-S / DVB-S2 > Special".
The tab provides settings, that differ from the specification of the broadcast stan-
dard.
The tab provides settings, that differ from the specification of the broadcast standard.
Settings:
Special
Reed

Special Settings

Enables/disables special settings.
The setting allows you to switch between standard-compliant and user-defined channel
coding.
Remote command:
[:SOURce<hw>]:BB:DVBS[:SPECial]:SETTings[:STATe]
Reed Solomon
Enables/disables the Reed-Solomon encoder.
Normally, the incoming packet length of a transport stream frame is 188 bytes. In spe-
cial cases, a length of 204 bytes is possible.
The behavior depends on the "Packet Length":
●
"On"
If "Packet Length" = 188: The Reed-Solomon encoder adds 16 Reed-Solomon
bytes to the incoming 188 bytes of an MPEG transport stream frame. The Reed-
Solomon decoder can then correct up to 8 errored bytes in a Reed-Solomon
packet (= 204 bytes). The number of incorrect bits in an errored byte is irrelevant.
If "Packet Length" = 204: Of the incoming 204 bytes of an MPEG transport stream
frame, the Reed-Solomon encoder overwrites the last 16 bytes with its own Reed-
Solomon bytes.
Default state.
●
"Off"
User Manual 1179.1058.02 ─ 02
Settings............................................................................................................ 24
Solomon.............................................................................................................. 24
DVB-S Configuration and Settings
Special Settings
on page 55
24