Comtech EF Data CDM-550T Manual page 36

Front Panel Operation
6.2.3.1 (CONFIG) TX (Transmit)
TX: MOD
ON/OFF PWR SCRAM CLK TSI
The sub-branches available are:
(CONFIG, TX) MOD (Modulation)
(CONFIG, TX) FREQ (Frequency)
6–6
FREQ DATA
SELECT TX MODULATION:
BPSK QPSK OQPSK (ENTER)
Select BPSK, QPSK, or Offset QPSK modulation, using the LEFT/RIGHT arrow
keys, then press ENTER. (Note: if a TURBO FEC option is selected, the
modulation type will be automatically fixed, and the user will be presented with a
warning screen.)
EDIT TX FREQUENCY:
72.2345 MHz
Edit the transmit frequency. This is accomplished by selecting the digit to be
edited, using the LEFT/RIGHT arrow keys. The value of the digit is then
changed using the UP/DOWN arrow keys. The user should then press ENTER.
The range of frequencies is from 52 - 88 MHz (70 MHz factory option) or 104 -
176 MHz (140 MHz factory option).
FEC
(PRESS ENT)
CDM-550T Satellite Modem
Rev. 1.3