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Feature Descriptions MDM6000 Satellite Modem
14.6.12.1 Configure the Backup Carrier
Go to the following menu to configure the different settings on the remote site:
MDM6000 >> Demodulator >> Backup Carrier
Setting Description
Backup Carrier Enable Use this to arm the switch between the main input frequency
and the backup carrier input frequency.
Backup Carrier Input
Frequency
Preconfigured RF input frequency.
The demodulator tries to lock onto this frequency when a
Demodulator No PL Lock alarm is generated.
Backup Carrier Symbol Rate Preconfigured nominal symbol rate.
The demodulator tries to lock with the preconfigured symbol rate
when a Demodulator No PL Lock alarm is generated.
Backup Carrier Switch
Timeout
This is the time interval (in seconds) between consecutive
demodulator carrier switch operations.
When this time is to short the device is unable to
connect to the other frequency and can result in
permanent loss of satellite link connection.
By default this is 60 seconds.
Active Carrier Indicates which carries (main or backup) is currently active.
Backup Carrier Switch Count The number of times we have dynamically switched to another
carrier (with or without success).
The next sequence is followed on the remote site.
When the demodulator/modem on the remote site looses connection (unlock) with the current
frequency a switch is performed to the other frequency.
When the demodulator is not locked within the Carrier Switch Timeout the second frequency is tried.
This sequence continues until the demodulator is locked.
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