Comtech EF Data CDM-425, Installation And Operation Manual

Page: 169 / 744

CDM-425 Advanced Satellite Modem
Revision 0
Front Panel Operation 6–51 MN-CDM-425
6.2.1.11.7 CONFIG: Mask

BUC
Chapter 10. OUTDOOR UNIT (ODU) (TRANSCEIVER, BUC, AND LNB)
OPERATION
BUC alarm = Active (Active,Mask)
Attach to Tx alarm = No (Yes,No)(

)
When L-Band is in use, you may include a BUC in the operating system. You may monitor and
control a ‘smart’ BUC via the modem using FSK. For a modem in a 1:1 redundancy setup, you
must customize the fault indications for the physical setup.
6.2.1.11.8 CONFIG: Mask

LNB
Chapter 10. OUTDOOR UNIT (ODU) (TRANSCEIVER, BUC, AND LNB)
OPERATION
LNB alarm = Active (Active,Mask)
Attach to Rx alarm = No (Yes,No)(

)
When L-Band is in use, you may include a Low-Noise Block Down Converter (LNB) in the
operating system. You can use the modem only to monitor and control the power supply values.
For a modem in a 1:1 redundancy setup, you must customize the fault indications for the physical
setup.
6.2.1.11.9 CONFIG: Mask

ClkExt (G.703 Clock Extension Mask)
G.703 Clock Extension = Active
(Active, Masked) (

)
Use the
▲▼ arrow keys to select
Active or Masked . Press ENTER .
When you select Active , the modem generates a ClkExt (Clock Extension) alarm if the G.703
Clock Extension mode is set to TxLock and the input is lost or removed from the G.703 interface.