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CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier®
Front Panel Operation
5.4.2.1
CONFIG: Tx
Tx FEC: Vit Vit+RS TCM+RS
TPC
For the Transmit FEC type, select Vit, Vit+RS, TCM+RS, or TPC using the
then press
ENTER
All possible choices are presented at all times. If an option is not installed (either
Hardware, or FAST) or not valid, the ◄ ► arrow keys will force the cursor to
skip past the unavailable choice.
Note the following:
FEC TYPE
Vit (Viterbi)
Vit+RS (Viterbi +Concatenated
Reed-Solomon)
TCM+RS (Trellis Coded Modulation
+ Concatenated Reed-Solomon)
TPC (Turbo)
Selecting VIT+RS or TCM+RS displays the following submenu:
Tx Rs (n/k)
IESS-310 network
5.4.2.2
CONFIG: Tx
Modulation: BPSK
16-QAM
For the Transmit Modulation Scheme, select BPSK, QPSK, 8-PSK, or 16-QAM using the
arrow keys, then press
All possible choices are presented at all times. If an option is not installed (either
Hardware, or FAST) or not valid, the ◄ ► arrow keys will force the cursor to
skip past the unavailable choice.
Note the following:
CASE
BPSK
QPSK
8-PSK
16-QAM
FEC
(◄ ►,ENT)
.
RULES
Always valid.
Always valid.
Only if 8-PSK FAST is
enabled.
If the TPC codec is installed
and Data Rate FAST option
is enabled.
Mod
QPSK
.
ENTER
RULES
Valid for all FEC types except TCM+R-S
Valid for all FEC types except TCM+R-S
Valid for TCM+R-S, TPC (Turbo) requires 8-PSK FAST option
Valid for Viterbi + R-S, TPC (Turbo) requires 16-QAM FAST option
(◄ ►,ENT)
(219/201)
8-PSK
(◄ ►,ENT)
5–14
Revision 7
MN/CDMQX.IOM
arrow keys,
◄ ►
COMMENT
Fixed at 8-PSK and Rate 2/3.
◄ ►
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