Comtech EF Data CDM-570 - Manual (Page 108)

CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Front Panel Operation MN/CDM570L.IOM
5–22
5.2.2.1.4.2 (CONFIG: Rx) Dem (Demodulation)
Demodulation: BPSK QPSK
OQPSK 8-PSK 8-QAM 16-QAM
IMPORTANT NOTE: All available choices are presented at all times. If an
option is not installed (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 codec AND requires 8-PSK/8-QAM FAST option
8-QAM Requires Turbo codec AND requires 8-PSK/8-QAM FAST option
16-QAM Requires Viterbi+RS OR Turbo codec AND requires 16-QAM FAST option
5.2.2.1.4.3 (CONFIG: Rx) Code (Code Rate)
Rx Code Rate: 5/16 21/44
1/2 2/3 3/4 7/8 0.95 Unc
IMPORTANT NOTE: All available choices are presented at all times.
If an option is not installed (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
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