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SDM-300L3 Satellite Modem
Front Panel Operation
To change the rate using the variable rate selection, press <ENTER> when TX-V is
displayed. A flashing cursor is displayed on the first character of the coding type on line
1. Press [←] or [→] to move the flashing cursor, and [↑] or [↓] to increment or
decrement the digit at the flashing cursor. Press <ENTER> to execute the change.
Notes:
1. When the TX rate has been programmed, the transmitter is automatically turned
2. Code Rate 3/4 not compatible with a combination of a CSC Closed Modulator
off to prevent swamping of other channels. To turn the transmitter on, use the
TX-IF Output function.
Type and Sequential Encoder.
Code Rate
Non-Turbo Requirements
BPSK 1/2
{O}QPSK 1/2
{O}QPSK 3/4
QPSK 7/8
8-PSK 2/3
BPSK 1/1
{O}QPSK 1/1
Turbo Requirements
BPSK 21/44
BPSK 5/16
{O}QPSK 1/2
8-PSK 3/4
Burst Mode Data Range
BPSK 5/16
{O} QPSK 1/2
8-PSK 3/4
Burst Mode Data Range
BPSK 5/16
{O} QPSK 1/2
8-PSK 3/4
Notes:
1. Max Symbol Rate = 2500 ksps
2. Max Data Rate for Low Var. Rate: 512 kbps.
3. OQPSK Option only: OQPSK 1/2, 3/4, and 7/8
Data Rate Range
2.4 to 1250 kbps
4.8 to 2500 kbps
7.2 to 3750 kbps
8.4 to 4375 kbps
64.0 to 5000 kbps
4.8 to 2500 kbps
9.6 to 5000 kbps
2.4 to 1193.181 kbps
2.4 to 781.25 kbps
4.8 to 2386.363 kbps
384 to 5000 kbps
2.4 to 781.25 kbps
4.8 to 2386.363 kbps
384 to 5000 kbps
2.4 to 781.25 kbps
4.8 to 2386.363 kbps
384 to 5000 kbps
4–9
Revision 1
MN/SDM300L3.IOM
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