Comtech EF Data CDM-625A, Installation And Operation Manual

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CDM-625A Advanced Satellite Modem MN-CDM625A
Front Panel Operation Revision 4
6–27
Decoder Type Modulation Type FEC Rate Choice
VF2L or VF2S (cont.)
8-ARY
0.521, 0.537, 0.562, 0.586, 0.611,
0.635, 0.770, 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
When you install the TPC/LDPC hardware option and are able to select TPC from the CONFIG: Rx
> FEC submenu, the options appear as shown:
Demod=QPSK (B,Q OQ,8PSK,16Q,8QAM)
FEC Rate=1/2 (1/2,3/4,7/8) (

)
When you select VFEC from the CONFIG: Rx > FEC submenu, the options appear as shown:
Demod=BPSK (B,Q,8QAM,16QAM) (

)
FEC Rate=0.488 (Fixed)
When you select ULL from the CONFIG: Rx > FEC submenu, the options appear as shown:
Demod=BPSK (B,Q) (

)
FEC Rate=0.493 (Fixed)
6.2.1.4.5 CONFIG: Rx

Data
Rx Data Rate Rx Sub-Mux
(

)
Use the ◄ ► arrow keys to select Rx Data Rate or Rx Sub-Mux . Press ENTER .
If Rx Sub-Mux is ON , this menu provides read-only
IP Info Rate
information on the bottom line,
as shown:
Rx Data Rate Rx Sub-Mux
(IP Info Rate: 01200.340 kbps) (

)
CONFIG: Rx

Data

Rx Data Rate
Rx Data Rate = 01544.000 kbps
Data Invert=Off Clock Invert=Off (

)