Comtech EF Data CDM-625 - Manual (Page 476)

CDM-625 Advanced Satellite Modem Revision 15
Appendix D MN-CDM625
D–12
Parameter
Type
Command
(Instruction
& Qualifier)
Number of
Arguments
Description of Arguments
Response to
Command
Query
(Instruction &
Qualifier)
Response to
Query
Tx FEC Code
Rate
TCR= 1 byte, value
of 0 thru 7, A
to U
Command or Query (Query only in IP-ACM).
Tx FEC Code Rate in the form x, where:
0=Rate 1/2
1=Rate 3/4
2=Rate 7/8
3=Rate 2/3 (8-PSK TCM or LDPC only)
4=Rate 1/1 (Uncoded or No FEC)
5=Rate 21/44 (Turbo Only)
6=Rate 5/16 (Turbo Only)
7=Rate 0.95 (Turbo Only) (aka 17/18)
8=Reserved
9=Reserved
A=VersaFEC CCM ModCod 0 – BPSK 0.488
B=VersaFEC CCM ModCod 1 – QPSK 0.533
C=VersaFEC CCM ModCod 2 – QPSK 0.631
D=VersaFEC CCM ModCod 3 – QPSK 0.706
E=VersaFEC CCM ModCod 4 – QPSK 0.803
F=VersaFEC CCM ModCod 5 – 8-QAM 0.642
G=VersaFEC CCM ModCod 6 – 8-QAM 0.711
H=VersaFEC CCM ModCod 7 – 8-QAM 0.780
I=VersaFEC CCM ModCod 8 – 16-QAM 0.731
J=VersaFEC CCM ModCod 9 – 16-QAM 0.780
K=VersaFEC CCM ModCod 10 – 16-QAM 0.829
L=VersaFEC CCM ModCod 11 – 16-QAM 0.853
M=Reserved
N=Reserved
O=VersaFEC CCM ModCod 14 – 8-QAM 0.576
P=VersaFEC CCM ModCod 15 – 16-QAM 0.644
Q=Reserved
R=VersaFEC CCM ULL ModCod 17 – BPSK 0.493
S=VersaFEC CCM ULL ModCod 18 – QPSK 0.493
T=VersaFEC CCM ULL ModCod 19 – QPSK 0.654
U=VersaFEC CCM ULL ModCod 20 – QPSK 0.734
Depending on FEC type, not all of these selections will be valid.
Example: TCR=1 (selects Rate 3/4)
TCR=
TCR?
TCR*
TCR#
TCR? TCR=x
(see Description of
Arguments)