Comtech EF Data CDM-625A, Installation And Operation Manual

Page: 480 / 756

CDM-625A Advanced Satellite Modem MN-CDM625A
CDM-625A ODU (Transceiver, BUC, LNB) Operation Revision 4
10–10
10.3.3.3 (SELECT:) ODU Menu Branches
ODU: BUC:PwRef
LNB:PwRef FSK-control (

)
Use the ◄ ► arrow keys to select BUC:PwRef , LNB:PwRef , or FSK-control , and
then press ENTER:
ODU Menu Branch Sect. Nested Menu Function
BUC:PwRef 10.3.3.3.1 Provides menus to enter a Tx LO frequency, and to control a 10MHz
reference and for Power supply control and alarm limits.
LNB:PwRef 10.3.3.3.2 Provides menus to enter an Rx LO frequency, and to control a 10MHz
reference and for Power supply control and alarm limits.
FSK-control 10.3.3.3.3 ( Frequency Shift Keying control ) Provides menus to monitor and
control CSAT-5060 OR KST-2000A/B or BUC settings, and LPOD
settings via Advanced FSK. The appearance of, and the functional
selections available from this nested menu are dependent on the Tx
frequency employed – 70/140 versus L-Band.
10.3.3.3.1 ODU: BUC:PwRef (Power Supply and Reference)
BUC control/monitor (non-FSK):
PSU-and-10MHz LO-freq PSUmonitor (  )
The modem provides DC power and a 10MHz reference that may be used by a BUC. Use the
◄
► arrow keys to select PSU-and-10MHz , LO- Freq , or PSUmonitor , and then press ENTER .
10.3.3.3.1.1 ODU: BUC:PwRef

PSU-and-10MHz Parameters
BUC supply=N/I 10MHz-ref:Off (Off,On)
Alarm limits, from 0.0 to 2.0 amps (

)
Use the
◄ ► arrow keys to select
BUC Supply
,
10MHz-ref
, or
Alarm Limits
, and then use the
▲▼
arrow keys to select a setting:
Selection Setting
BUC supply Indicates installation state, e.g., N/I =- Not Installed.
10MHz-ref
Set the 10MHz Reference as Off or On .
A BUC will not transmit without a 10MHz reference.
Alarm Limits
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 .
Press ENTER when done.