Odu: Lnb:pwrsupply+Ref (Power Supply And Reference) - Comtech EF Data CDM-425 Installation And Operation Manual

10.3.3.3.2

ODU: LNB:PwrSupply+Ref (Power Supply and Reference)

LNB control/monitor:
PSU-and-10MHz
The modem can supply DC power to an LNB connected to the Type 'N' rear panel Rx connector.
It can also supply a 10 MHz reference for a phase-locked LNB. Use the ◄ ►arrow keys to select
PSU-and-10MHz, LO-freq, or PSUmonitor, and then press ENTER.
10.3.3.3.2.1 ODU: LNB:PwrSupply+Ref  PSU-and-10MHz
LNB: Voltage=Off
Alarm limits, from 000 to 500 mA
Use the ◄ ►arrow keys to select Voltage, 10MHz, or Alarm Limits. Then, use the ▲▼ arrow
keys to change that setting:
Selection
Voltage
10MHz
Alarm Limits
Press ENTER when done.
10.3.3.3.2.2 ODU: LNB:PwrSupply+Ref  LO-Freq (Local Oscillator Frequency)
LNB-LO: Frequency= 00000 MHz
Use the ◄ ►arrow keys to select the LNB-LO (Local Oscillator) Frequency for the
downconversion, or Mix to set the polarity for the downconversion mix in the LNB.
On the top line – To set the LNB-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 LNB LO causes the Rx-IF frequency menu to show LO and
Satellite frequencies (satellite frequency = LO frequency ± modem frequency).
Press ENTER when done.
ODU (Transceiver, BUC, LNB) Operation
LO-freq
10MHz:Off (Off,On)
Select Off, 13V, or 18V
Set the 10MHz Reference as Off or On.
Use the◄ ►arrow keys to select a digit to edit, and then use the ▲▼ arrow keys to
change that digit. Valid range, in mA, is 000 to 500.
Mix= High [-] (Hi,Lo)
10–12
CDM-425 Advanced Satellite Modem
PSUmonitor ()
()
Setting
()
Revision 0
MN-CDM-425