Config: Rx  Fec; Config: Rx  Demod (Demodulation) - Comtech EF Data CDM-425 Installation And Operation Manual

6.2.1.4.3
Dec=VFEC (VFEC,ULL,VF2L,VF2S)
Use the ▲▼ arrow keys to select an available Decoder option (shown in parentheses). Press
ENTER. Valid selections are:
► VFEC (VersaFEC)
► ULL (VersaFEC Ultra-Low Latency)
6.2.1.4.4
Demod=BPSK (B,Q,8QAM,16QAM)
FEC Rate=0.488 (Fixed)
Use the ◄ ►arrow keys to select Demod (top line) or FEC Rate (bottom line). Press ENTER.
Then, for either, use the ▲▼ arrow keys to select the setting. The Decoder type selected dictates
the FEC Rate selections:
Decoder Type
VFEC
ULL
(VersaFEC Ultra-Low Latency)
VF2L (VersaFEC-2 Long Block) or
VF2S (VersaFEC-2 Short Block)
VF2L or VF2S (cont.)
Front Panel Operation
CONFIG: Rx  FEC
► VF2L (VersaFEC-2 Long Block)
► VF2S (VersaFEC-2 Short Block)
CONFIG: Rx  Demod (Demodulation)
BPSK
QPSK
8-QAM (FAST option)
16-QAM (FAST option)
BPSK
QPSK
BPSK
QPSK
8-ARY (FAST option)
16-ARY (FAST option)
32-ARY (FAST option)
CDM-425 Advanced Satellite Modem
Modulation Type
Fixed at 0.488
0.533, 0.631, 0.706, 0.803
0.576, 0.642, 0.711, 0.780
0.644, 0.731, 0.780, 0.829, 0.853
Fixed at 0.493
0.493, 0.654, 0.734
Fixed at 0.489
0.489, 0.537, 0.586, 0.611, 0.635, 0.660,
0.684, 0.733
0.521, 0.537, 0.562, 0.586, 0.611, 0.635,
0.770, 0.684, 0.708, 0.733
0.586, 0.611, 0.635, 0.660, 0.684, 0.708,
0.733, 0.757, 0.782
0.660, 0.684, 0.708, 0.733, 0.757, 0.782,
0.801, 0.831, 0.855, 0.879
6–26
Revision 0
()
()
FEC Rate Choice
MN-CDM-425