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QMultiFlex-400™ Installation and Operating Handbook
The following table lists all of the modem faults along with a description of what the fault
means. It also describes relevant checks the operator might make to try to eliminate the fault
condition. Note that the text shown in the table will be displayed in full on the web user
interface and in the system log but may appear in an abbreviated format on the front panel
LCD display due to space considerations.
The acronyms used to define the actions taken on each fault occurring are as follows:
Actions: Relays
U: Prompt unit fault relay.
T: Prompt traffic fault relay.
D: Deferred alarm relay.
Actions: Other
CM: Carrier mute.
11.1 Transmit Faults
Fault Text
Tx
fault:
BUC
PSU
outside limits.
Tx fault: Tx terrestrial
DPLL unlocked.
Tx fault: Tx channel DPLL
unlocked.
Tx fault: Encoder fault.
Tx fault: Framer sync lost.
Tx fault: Data failure to
modulator.
Chapter 11
Notes
The current drawn by the BUC has exceeded the
permissible upper & lower limits.
Consult technical support if this alarm cannot be cleared.
Consult technical support if this alarm cannot be cleared.
Unspecified DVB-S2 encoder fault. Consult factory.
Unspecified DVB-S2 encoder fault. Consult factory.
Unspecified DVB-S2 modulator fault. Consult factory.
Fault Messages
11-1
To
To
Relays
Ter
Sat
Other
CM
CM
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