CDM-625 Advanced Satellite Modem
Forward Error Correction Options
1
1E-1
Uncoded BPSK/QPSK
1E-2
1E-3
1E-4
1E-5
1E-6
1E-7
1E-8
1E-9
1
BER
Figure 7-24. Differential Encoding – No FEC, No Scrambling
2
3
4
5
2
3
4
6
7
5
6
7
7–37
Eb/No i n dB
8
9
10
Differential
Encoding -
No FEC, no
scrambling
8
9
10
Revision 13
MN-CDM625
1 1
12
11
12
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How to replace the battery in comtech 625 modem