Comtech EF Data CDM-570AL - Page 145

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
Front Panel Operation 6–29 MN-CDM570A
IMPORTANT NOTE – All selections are always viewable. If a Hardware or FAST
option is either uninstalled or invalid, the cursor will skip past the unavailable
choice.
The VFEC (VersaFEC), ULL (Ultra Low Latency), VF2L (VersaFEC-2 Long Block),
and VF2S (VersaFEC-2 Short Block) Rx FEC types and their available Rx
Demodulation Types, Codes, and Data Rates are UNAVAILABLE when operating
in CDM-570 Compatible Mode. If the Rx FEC Type is VFEC or ULL when CDM-570
Compatible Mode is selected, then the Rx FEC Type will be reset to Viterbi and
the Demodulation and Code Rate will also be reset to appropriate values. See
Section 6.2 for further information.
Rx FEC Decoder Selection
Available Rx Demodulation Type
Available Rx Code Rate
Viterbi
BPSK
Fixed at 1/2
QPSK
1/2, 3/4, 7/8
OQPSK
Vit-RS
(Viterbi + Concatenated Reed-
Solomon)
BPSK
Fixed at 1/2
QPSK
1/2, 3/4, 7/8
OQPSK
16-QAM (FAST)
3/4, 7/8
TCM-RS (Trellis Coded Modulation
+ Concatenated Reed-Solomon)
8-PSK (FAST) Fixed at 2/3
TPC (Turbo Product Codec)
BPSK
5/16, 21/44
QPSK
21/44, 3/4, 7/8, 0.95
OQPSK
8-PSK (FAST)
3/4, 7/8, 0.95
8-QAM (FAST)
16-QAM (FAST)
3/4, 7/8
VFEC (VersaFEC)
BPSK
Fixed at .488
QPSK
.533, .631, .706, .803
8-QAM (FAST)
.576, .642, .711, .780
16-QAM (FAST)
.644, .731, .780, .829, .853
VF2L (VersaFEC-2 Long Block)
BPSK
0.489
QPSK
0.489, 0.537, 0.586, 0.611, 0.635,
0.660, 0.684, 0.733
8-ARY
0.521, 0.537, 0.562, 0.586, 0.611,
0.635, 0.660, 0.684, 0.708, 0.733
16-ARY
0.586, 0.611, 0.635, 0.660, 0.684,
0.708, 0.733, 0.757, 0.782
32-ARY
0.660, 0.684, 0.708, 0.733, 0.757,
0.782, 0.801, 0.831, 0.855, 0.879