4 (config, tx) data rate – Mocomtech CDM-570 User Manual
Page 138

CDM-570/570L Satellite Modem with Optional IP Module
Revision 4
Front Panel Operation
MN/CDM570L.IOM
6–14
6.7.4
(CONFIG, TX) DATA RATE
The overall range of data rates is from 2.4 to 9980 kbps. The overall range of symbol
rates is from 4.8 to 3000 ksymbols/second. The minimum and maximum data rates are
dependent on modulation type and FEC encoder rate. If user changes the modulation or
FEC, and the currently selected data rate can no longer be supported, then the data rate
will be adjusted automatically, up or down, keeping the symbol rate constant. The
bottom line of the display shows the symbol rate, based on FEC type, modulation, FEC
Code Rate, and Data Rate. The valid ranges of data rate are shown in the table below.
If the current interface type is selected to be G.703, the data rate will be automatically set
to either 1544 kbps (T1) or 2048 kbps (E1).
FEC Type
Modulation
Code Rate
Data Rate Range
EDMAC limited?
None
BPSK
Uncoded
4.8 kbps to 3.000 Mbps
Yes – see note below
None
QPSK/OQPSK
Uncoded
9.6 kbps to 5.000 Mbps
Yes – see note below
Viterbi
BPSK
Rate 1/2
2.4 kbps to 1.500 Mbps
Yes – see note below
Viterbi
QPSK/OQPSK
Rate 1/2
4.8 kbps to 3.000 Mbps
Yes – see note below
Viterbi
QPSK/OQPSK
Rate 3/4
7.2 kbps to 4.500 Mbps
Yes – see note below
Viterbi
QPSK/OQPSK
Rate 7/8
8.4 kbps to 5.250 Mbps
Yes – see note below
Viterbi + RS
BPSK
Rate 1/2
2.4 kbps to 1.363 Mbps
Yes – see note below
Viterbi + RS
QPSK/OQPSK
Rate 1/2
4.3 kbps to 2.727 Mbps
Yes – see note below
Viterbi + RS
QPSK/OQPSK
Rate 3/4
6.5 kbps to 4.091 Mbps
Yes – see note below
Viterbi + RS
QPSK/OQPSK
Rate 7/8
7.5 kbps to 4.666 Mbps
Yes – see note below
Viterbi + RS
16-QAM
Rate 3/4
13.0 kbps to 4.000 Mbps
Yes – see note below
Viterbi + RS
16-QAM
Rate 7/8
16.8 kbps to 4.666 Mbps
Yes – see note below
TCM + RS
8-PSK
Rate 2/3
8.7 kbps to 4.400 Mbps
Yes – see note below
Turbo
BPSK
Rate 5/16
2.4 kbps to 0.937 Mbps
Yes – see note below
Turbo
BPSK
Rate 21/44
2.4 kbps to 1.430 Mbps
Yes – see note below
Turbo
QPSK/OQPSK
Rate 21/44
4.8 kbps to 2.860 Mbps
Yes – see note below
Turbo
QPSK/OQPSK
Rate 3/4
7.2 kbps to 4.500 Mbps
Yes – see note below
Turbo
QPSK/OQPSK
Rate 7/8
8.4 kbps to 5.250 Mbps
Yes – see note below
Turbo
QPSK/OQPSK
Rate 0.95
9.1 kbps to 5.666 Mbps
Yes – see note below
Turbo
8-PSK/8-QAM
Rate 3/4
10.8 kbps to 6.750 Mbps
No
Turbo
8-PSK/8-QAM
Rate 7/8
13.6 kbps to 7.875 Mbps
No
Turbo
8-PSK/8-QAM
Rate 0.95
15.3 kbps to 8.500 Mbps
No
Turbo
16-QAM
Rate 3/4
14.4 kbps to 9.000 Mbps
No
Turbo
16-QAM
Rate 7/8
16.8 kbps to 9.980 Mbps
No
Important Note: Where noted in the table above, if EDMAC framing is employed, the upper data rate
will be reduced by 5% for data rates up to 2.048 Mbps, and by 1.6% for data rates above 2.048 Mbps,
where EDMAC2 framing is used, or for Rate 21/44 BPSK/QPSK Turbo, or Rate 5/16 BPSK Turbo.
Tx Dat Rate:5000.000kbps
3000.000ksym (
◄ ►,▲ ▼,ENT)
IMPORTANT