Comtech EF Data CDM-710 Installation And Operation Manual page 134

CDM-710/L Broadcast Satellite Modem
Front Panel Operation
Refer to the Data Rate (the top line "Data:" on the (Config:) Rx: SymRate
menu) for valid code rates. Prior to synchronization of the Rx path, the cursor
may reside in any position.
Use the   arrow keys to select the Code Rate. Press ENTER.
(Config:) Rx:  SymRate
If the Rx Path is not locked, the message should appear as shown in the
preceding example.
To change the Symbol Rate, use the   arrow keys to select the digit to be
edit, and then use the  arrow keys to change that digit. Press ENTER.
In DVB-S and DVB-DSNG Mode, the Data Rate digits also change as you edit the
Symbol Rate value. The value of the Data Rate depends upon the code rate and
modulation type. When configuring a new Symbol Rate (or, indirectly, a Data
Rate) the value is not accepted unless it is within a valid range.
In DVB-S2 Mode, 'Demod unlocked' appears while the Rx path is not
synchronized. After synchronization, the correct Data Rate appears in the display
and the demodulator automatically resolves the modulation type, code rate,
pilots ON/OFF, FECrame length, spectral inversion, etc. from the DVB-S2 carrier.
See Table 7-1 and Table 7-2 (under the (Config:) Tx: SymRate menu)
for the Symbol Rate / Data Rate Range tabulation.
(Config:) Rx:  Freq (Frequency)
To edit the Rx Frequency: Use the   arrow keys to select the digit to edit, and
then use the  arrow keys to change that digit. Press ENTER. Note that:
• For the CDM-710 (70/140 MHz), you may configure a frequency range
from 52 to 88 MHz and from 104 to 176 MHz, in 100 Hz steps.
Data: 038.723635 Mbps
Sym: 017.379483 Msps(E)
RX Freq: 0140.0000 MHz
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MN/CDM710.IOM
(E)
Revision 12