Comtech EF Data CDM-550T - Manual (Page 50)

CDM-550T Satellite Modem Revision 3
Front Panel Operation MN/CDM550T.IOM
NOTE: The minimum and maximum data rates are dependent on modulation type and FEC
decoder rate. If the user changes the modulation or FEC, and the currently selected data rate is
then invalid, it will be adjusted automatically.
6.2.3.2.4 (CONFIG: RX) FEC TYPE (Forward Error Correction):
If either the Reed-Solomon Codec option or the Turbo Codec option are not installed, the
following menu will be displayed:
Select either Viterbi, Sequential, or None, using the [
←] [→] arrow keys, then
press ENTER. However, if the Reed-Solomon Codec option is installed, the
following menu will be displayed:
Select Viterbi, Sequential, Viterbi + concatenated Reed-Solomon, Sequential +
concatenated Reed-Solomon, or None, using the [
←] [→] arrow keys, then press
ENTER.
If the Turbo Codec option is installed, the following menu will be displayed:
Select Viterbi, Sequential, Turbo or None, using the [
←] [→] arrow keys, then
press ENTER.
SELECT FEC TYPE: VITERBI
SEQUENTIAL NONE (ENTER)
SELECT FEC TYPE: VIT SEQ
VIT+RS SEQ+RS NONE (ENT)
SELECT FEC TYPE: VITERBI
SEQ TURBO NONE (ENTER)
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