Comtech EF Data CDM-Qx Installation And Operation Manual page 67

Multi-channel satellite modem with doubletalk carrier-in-carrier
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CDM-Qx Satellite Modem
Front Panel Operation
(Config%Tx%Pwr%AUPC) – DEMOD-UNLOCK
Action when Remote Demod
unlocks: Nom-Pwr Max-Pwr
The choices are: Nom-Pwr (Nominal Power), where the output level will revert to the
nominal power level set under Manual, or Max-Pwr (Maximum Power), where the
output level will change to the maximum permitted. Select the action that will occur if the
remote demod is unlocked, then press
(Config%Tx%Scram) – SCRAMBLER
Scrambling:Default-On
IESS-315-On
The options are:
Default-On
IESS-315-On
Off
If CnC is enabled, the V.35 scrambler is always used in order to suppress framing
artifacts.
As before, the options are displayed all of the time, but the ◄ ► arrow keys will force
the cursor to skip past an unavailable choice.
IMPORTANT
ENTER
Off
(◄ ►,ENT)
The appropriate scrambler type is automatically selected
This only applies when Turbo is installed and has been selected as the FEC type
No scrambling
The default scrambler types are:
Viterbi, no framing:
Viterbi, EDMAC frame:
Viterbi + R-S or TCM/R-S:
TPC:
CnC:
5–19
.
ITU V.35 (Intelsat variant)
Comtech proprietary, frame synchronized
Per IESS-308, frame synchronized
Comtech proprietary, frame synchronized
ITU V.35 (Intelsat variant) – overrides other
settings
Revision 6
MN/CDMQx.IOM

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