Comtech EF Data CDM-550T Manual page 46

Front Panel Operation
6–16
However, if the Reed-Solomon Codec option is installed, the following menu
will be displayed:
SELECT FEC TYPE: VIT SEQ
VIT+RS SEQ+RS NONE (ENT)
Select Viterbi, Sequential, Viterbi + concatenated Reed-Solomon, Sequential +
concatenated Reed-Solomon, or None, using the LEFT/RIGHT arrow keys, then
press ENTER.
If the Turbo Codec option is installed, the following menu will be displayed:
SELECT FEC TYPE: VITERBI
SEQ TURBO NONE (ENTER)
Select Viterbi, Sequential, Turbo or None, using the LEFT/RIGHT arrow keys,
then press ENTER.
(CONFIG, RX, FEC, RATE) FEC RATE
SELECT FEC ENCODER RATE:
1/2 3/4 7/8(PRESS ENT)
Select Rate 1/2, Rate 3/4 or Rate 7/8 encoding rate, using the LEFT/RIGHT
arrow keys, then press ENTER.
NOTE: If BPSK is selected, only Rate 1/2 is permitted. A warning screen will be
displayed if this sub-branch is entered when in BPSK mode.
If Turbo is selected, the following menu will be displayed:
CDM-550T Satellite Modem
Rev. 1.3