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CDM-600L Satellite Modem
Front Panel Operation
The Demodulation Type FEC Rate choices are dictated by the Decoder type:
No Decoder:
Non-Turbo Decoder:
Turbo (with the 5Mbps
Codec installed):
Turbo (with the 20Mbps
Codec installed, or the
TPC/LDPC Codec installed):
LDPC (with the TPC/LDPC
Codec installed):
The following window will appear if the TPC/LDPC Codec is installed:
DEMODULATION=QPSK (B,Q,OQ,8-PSK,16Q,8QAM)
FEC RATE = 1/2
CONFIG: RX: DATA
RECEIVE DATA RATE = 00064.000 kbps
DATA INVERT = OFF (ON,OFF)
The top line permits the data rate to be edited Select the digit of the Receive Data Rate
using the [←] [→] arrow keys. Edit the value of the digit using the [↑] [↓] arrow keys.
Press ENTER.
NOTE: The minimum and maximum data rates are dependent on Demodulation type and
FEC decoder Rate. If the user changes the Modulation or FEC, and the data rate becomes
invalid, the Data Rate will be adjusted automatically. The upper range of data rate will be
dictated by the FAST option installed.
When Insert Framing or the G.703 interface type is used the [↑] [↓]arrow keys will scroll
through the available data rates. If in Drop Mode and the data rate is edited to 1920 kbps,
a comment is shown to indicate that E1 fixed channel mode will be implemented. The
bottom line permits the user to select the data inversion feature (added for compatibility
BPSK
Fixed at 1/1
QPSK, OQPSK
Fixed at 1/1
BPSK
Fixed at Rate 1/2
TCM 8-PSK
Fixed at Rate 2/3
QPSK, OQPSK
1/2, 3/4, or 7/8
16-QAM
3/4 or 7/8
BPSK
5/16 or 21/44
QPSK, OQPSK
Fixed at 3/4
8-PSK, or 16-QAM
BPSK
5/16 or 21/44
QPSK, OQPSK
1/2, 3/4, 7/8 and 0.95
8-PSK
3/4, 7/8 and 0.95
16-QAM
3/4 and 7/8
BPSK
1/2
QPSK, OQPSK
1/2, 2/3, 3/4
8-PSK, 8-QAM
3/4, 7/8
16-QAM
3/4
(1/2,3/4,7/8)
6–16
Revision 2
MN/CDM600L.IOM
(FAST option)
(FAST option)
(FAST option)
(FAST option)
(FAST option)
(FAST option)
(FAST option)
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