Comtech EF Data CDM-550T - Manual (Page 42)

CDM-550T Satellite Modem Revision 3
Front Panel Operation MN/CDM550T.IOM
6.2.3.1 (CONFIG:) TX (Transmit)
The sub-branches available are:
TX: MOD FREQ DATA FEC
ON/OFF PWR SCRAM CLK TSI
6.2.3.1.1 (CONFIG: TX) MOD (Modulation)
Select BPSK, QPSK, or Offset QPSK modulation, using the [
←] [→] 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.
SELECT TX MODULATION:
BPSK QPSK OQPSK (ENTER)
6.2.3.1.2 (CONFIG: TX) FREQ (Frequency)
Edit the transmit frequency. This is accomplished by selecting the digit to be edited, using the
[
←] [→] arrow keys. The value of the digit is then changed using the [↑] [↓] arrow keys. The
user should then press ENTER. The range of frequencies is from 52 to 88 MHz or 104 to 176
MHz (70 / 140 MHz factory option).
EDIT TX FREQUENCY:
72.2345 MHz (PRESS ENT)
6–6