Data Rate Range - Comtech EF Data CDM-710 Installation And Operation Manual

CDM-710 Broadcast Satellite Modem
Introduction
1.4.7

Data Rate Range

Symbol Rate and Data Rate Range for DVB-S2, DVB-S and DVB-DSNG. There is some
roundoff in the data rate ranges in the last digit. Table 1-6 is for the Standard FEC frame, and
Table 1-7 is for the Short Frame. The tables are based on a 188-byte transport stream packet.
When a 204-byte frame size is selected, the data rate increases by 204/188.
DVB recommends turning the Pilot ON for 8PSK and higher modulation orders, particularly
when phase noise is present.
The following modes may need Pilot ON for low C/N operation: 8PSK 1/2, 16APSK 2/3 and 3/4,
and 32APSK 3/4 to assist carrier recovery.
QPSK 1/4, 1/3, and 2/5 data is for information only.
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Revision 11
MN/CDM710.IOM