TPC BPSK: 5/16, 21/44, 3/4, 7/8
QPSK (and OQPSK): 5/16, 21/44, 3/4, 7/8, 0.93
8PSK: 3/4, 7/8, 0.93
16QAM: 3/4, 7/8, 0.93
Viterbi BPSK: 1/2, 3/4, 7/8
QPSK (and OQPSK): 1/2, 3/4, 7/8
TCM 8PSK: 2/3
Sequential BPSK: 1/2, 3/4, 7/8
QPSK (and OQPSK): 1/2, 3/4, 7/8
Table 6-9 Tx/Rx Modulation and FEC Code Rates
6.2.4.12 Tx/Rx Frequency Band
The modem supports independent selection of IF and L-band operation in transmit and
receive.
IF This selects the 70MHz and 140MHz IF bands, allowing operation
from 50MHz to 90MHz and 100MHz to 180MHz.
L-band This selects L-band, allowing operation from 950MHz to 2050MHz
(optionally to 2150MHz).
Table 6-10 Tx/Rx Frequency Band
6.2.4.13 Tx/Rx Carrier Frequency
There are various frequency control options, depending on whether IF or L-band has
been selected and whether a BUC or LNB is fitted that is being controlled via the modem.
The frequency control options are presented in Tables 6-11 through 6-14.
Range: 50.0MHz to 180.0MHz; step size: 0.0001MHz (i.e. 100Hz)
Description: This is the IF frequency used in transmitting to, or receiving from, satellite.
Note that values between 90MHz and 100MHz cannot be selected.
Table 6-11 Tx/Rx Carrier Frequency (IF)
Range: 950.0MHz to 2050.0MHz; step size: 0.0001MHz (i.e. 100Hz)
(there is an option to extend operation to 2150.0MHz)
Description: This is the L-band frequency used in transmitting to, or receiving from,
satellite.
To Next Page
Loading...