Figure 4-1. Front Panel - Comtech EF Data CDM-600 Operating Instructions Manual

CDM-600 Satellite Modem
Front Panel Operation
CONFIG: TX: MODULATION
MODULATION= QPSK (B,Q,OQ-PSK)
FEC RATE = 1/2
Select one of the parameters using the [←] [→] arrow keys, and then edit using the [↑]
[↓] arrow keys. Edit the Modulation type and the FEC rate.
The Encoder type dictates the Modulation Type and FEC rate choices:
No Encoder:
Non-Turbo Encoder:
Turbo (with the 5 Mbps
Codec Installed):
Turbo (with the 20 Mbps
Codec Installed, or the
TPC/LDPC Codec
installed):
LDPC (with TPC/LDPC
Codec installed):
The following window will appear if the TPC/LDPC Codec is installed:
MODULATION= QPSK (B,Q OQ,8PSK,16Q,8QAM)
FEC RATE = 1/2
(1/2,3/4,7/8)
BPSK
QPSK, OQPSK
BPSK
TCM 8-PSK
QPSK, OQPSK
16-QAM
BPSK
QPSK, OQPSK,
8-PSK, 16-QAM
BPSK
QPSK, OQPSK,
8-PSK
16-QAM
BPSK
QPSK, OQPSK,
8-PSK, 8-QAM
16-QAM
(1/2,3/4,7/8)
6–12
MN/CDM600.IOM
Fixed at 1/1
Fixed at 1/1
fixed at Rate 1/2
fixed at Rate 2/3 (FAST option)
1/2, 3/4 or 7/8
3/4 or 7/8 (Viterbi + Reed-Solomon only)
5/16 or 21/44
fixed at 3/4
fixed at 3/4 (FAST option)
5/16 or 21/44
1/2, 3/4, 7/8 or 0.95
3/4, 7/8 , and 0.95 (FAST option)
3/4 and 7/8 (FAST option)
1/2
1/2, 2/3, 3/4
2/3, 3/4 (FAST Option)
3/4 (FAST option)
Revision 7