Comtech EF Data CDM-425 Installation And Operation Manual page 501

Use the ◄ ►arrow keys to select BUC Supply, 10MHz-ref, or Alarm Limits, and then use the
▲▼ arrow keys to select a setting:
Selection
BUC Supply
10MHz-ref
Alarm Limits
Press ENTER when done.
10.3.3.3.1.2 ODU: BUC:PwrSupply+Ref  LO Freq (Local Oscillator Frequency)
BUC-LO Frequency= 00000 MHz
Use the ◄ ►arrow keys to select BUC-LO (Local Oscillator) Frequency for the upconversion, or
Mix to set the polarity for the upconversion mix in the BUC.
On the top line – To set the BUC-LO Frequency, use the ◄ ►arrow keys to select a digit to
edit, and then use the ▲▼ arrow keys to change that digit. The valid LO range is 3000 to 65000
MHz. Entering a non-zero value for BUC LO causes the Tx-IF frequency menu to show LO and
Satellite frequencies (satellite frequency = LO frequency ± modem frequency).
Press ENTER when done.
On the bottom line – To set the Mix polarity, use the ▲▼ arrow keys to set polarity as Hi (to
indicate a high side, inverting mix) or Lo (to indicate a low side, non-inverting mix).
Press ENTER when done.
10.3.3.3.1.3 ODU: BUC:PwrSupply+Ref  PSUmonitor
BUC Power Supply:
Use this read-only display to view the power supply current and voltage information. Press
ENTER or CLEAR to return to the previous menu.
ODU (Transceiver, BUC, LNB) Operation
Indicates installation state, e.g., N/I =- Not Installed.
Set the 10MHz Reference as Off or On.
A BUC will not transmit without a 10MHz reference.
Use the ◄ ►arrow keys to select a digit to edit, and then use the ▲▼ arrow keys to
change that digit. Valid range, in Amps, is 0.0 to 4.0.
Mix= High [-] (Hi,Lo)
0000mA, 00.0V
CDM-425 Advanced Satellite Modem
Setting
()
10–11
Revision 0
MN-CDM-425