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SatX/SE300—Front Panel Operation
2. Possible values: Please refer to section 1.2.1 for all possible values.
4.2.6.2.1.5
Pilot
Insert pilots to the BBFRAME using this submenu.
1. Navigate through the list using the ▲ ▼arrow keys.
2. Possible values:
No: No Pilot bits inserted to the BBFRAME.
o
Yes: Pilot bits inserted to the BBFRAME
o
Double: Double pilot bits inserted to the BBFRAME (SATX only).
o
Enhanced: Enhanced pilot bits to be used in case of phase noise on the transponder (SATEX
o
only).
3. Click OK to accept the value.
The above fields (Frame Size, Modulation, FEC Rate and Pilot) are greyed out during ACM,
since the ACM server will control them.
4.2.6.2.1.6
Stream Format
Selects input data stream format using this submenu. It is only valid for ASI source.
1. Navigate through the list using the ▲ ▼arrow keys.
2. Possible values:
Transport-204 (For DVB-S only)
o
Transport-188
o
Generic Packetized
o
Continuous packetized
o
3. Click OK to accept the value.
4.2.6.2.1.7
Mpeg Processing Mode
Select Mpeg processing Mode using this submenu. It is valid only if the source is set to ASI. It allows
matching the line rate to the ASI rate. It is only functional when operating with ASI on a single channel
only.
If rate-adjust option is not used, the ASI input data rate must be kept below the line data rate, in order
to avoid overflowing the input buffers (since the ASI protocol does not support flow control).
Sometimes, the ASI encoder data rate is not completely accurate, hence it is recommended to allow a
few ppm (~50ppm) margin (i.e. decreasing the ASI rate) to compensate for the inaccuracy.
When buffer overflow occurs, an alarm is activated indicating buffer overflow. At that time operators
can adjust/reduce the data rate accordingly.
1. Navigate through the list using the ▲ ▼arrow keys.
2. The possible values are:
Disable: No rate matching at all.
o
Data-Adjust: Adding or dropping MPEG Null-Packets. Using this option also requires a
o
correction to the PCR packets, called PCR re-stamping.
Symbol-adjust: Adjusting the symbol rate, so the line data rate will match the ASI data rate.
o
58
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