Comtech EF Data CDM-570A Installation And Operation Manual page 490

1
1E-1
Uncoded
BPSK/QPSK
1E-2
1E-3
1E-4
1E-5
1E-6
1E-7
1E-8
Typical performance
1E-9
1
BER
Figure B-8. Turbo Product Codec Rate 21/44 BPSK/QPSK/OQPSK
FEC (Forward Error Correction) Options
CDM-570A/570AL Satellite Modem with Optional Packet Processor
2 3 4
Spec limit
Rate 21/44
B/Q/OQPSK
2 3 4
5 6 7
Comtech Turbo Product Codec
Rate 21/44 BPSK/QPSK/OQPSK
5 6 7
B–26
Revision 5
Eb/No in dB
8 9 10 11
Notes:
* Rate 21/44 QPSK is
shown as R1/2 on the
front panel
* The OQPSK acquisition
and tracking thresholds
are approx. 1 dB worse
than the QPSK case
8 9 10 11
MN-CDM570A
12
12