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CDM-570/570L Satellite Modem with Optional IP Module Revision 4
Front Panel Operation MN/CDM570L.IOM
6–22
6.8.2 (CONFIG, RX) DEMODULATION
IMPORTANT NOTE: All possible choices are presented at all times. If an option is
not installed (either Hardware, or FAST) or valid, the ◄ ► arrow keys will force the
cursor to skip past the unavailable choice.
CASE RULES
BPSK
Valid for all FEC types except TCM+RS
QPSK
Valid for all FEC types except TCM+RS
OQPSK
Valid for all FEC types except TCM+RS
8-PSK
Requires TCM+RS OR Turbo OR TPC/LDPC AND
requires 8-PSK/8-QAM FAST option
8-QAM
Requires Turbo OR TPC/LDPC codec
AND requires 8-PSK/8-QAM FAST option
16-QAM
Requires Viterbi+RS OR Turbo OR TPC/LDPC codec
AND requires 16-QAM FAST option
6.8.3 (CONFIG, RX) CODE RATE
IMPORTANT NOTE: All possible choices are presented at all times. If an option is not
installed (either Hardware, or FAST) or valid, the ◄ ► arrow keys will force the cursor
to skip past the unavailable choice.
CASE RULES
5/16
Requires BPSK AND Turbo
21/44
Requires BPSK or QPSK/OQPSK AND Turbo
1/2
Valid for BPSK, QPSK and OQPSK
2/3
Requires TCM AND 8-PSK AND RS codec installed OR
TPC/LDPC codec installed
3/4
Valid for QPSK, OQPSK, 8-PSK, 8-QAM and 16-QAM
7/8
Valid for QPSK, OQPSK, 8-PSK, 8-QAM and 16-QAM
0.95
Valid for QPSK, OQPSK, 8-PSK and 8-QAM
Unc (uncoded) Valid only for ‘Uncoded’ in FEC choice
Demodulation: BPSK QPSK
OQPSK 8-PSK 8-QAM 16-QAM
Rx Code Rate: 5/16 21/44
1/2 2/3 3/4 7/8 0.95 Unc
IMPORTANT
IMPORTANT