Direct And Indirect Alarms; Equipment Log - Sagem -LINK F Installation And Operation Manual

SAGEM-LINK F
Installation and Operation Manual
Cable
Interface
Alarms
Demodulation
Modulation
NMI Alarms
Eth
ICC
MGMT1 or 2
TSL2
4.5.2 – Direct and Indirect Alarms
There are two type of alarms :
•
Direct alarms which occur when there is a fault on the unit (i.e. transmit frequency alarm)
• Indirect alarms caused by an other module failure, or by a missing unit or by a propagation
problem (RSL alarm, BER alarm, demodulation alarm....)
To determine the cause of an indirect alarm, it is necessary to analyze all possible causes which can
cause such an alarm, and to select the most probable.
.
4.5.3 – Equipment Log
The view equipment log feature is also very useful to determine graphically the cause of a problem,
because all active alarms are displayed versus time.
Reproduction and communication prohibited without the written permission of Sagem Communication
Description
This alarm is generated if there is a demodulator fault
or if received data is not recovered
This alarm is generated if there is modulator fault.
When a modulation alarm occurs, the transmitter is
muted
Description
This alarm is generated in case of a hardware failure
regarding NMI Ethernet interface
This alarm is generated if there is a communication
problem between the Network management agent
and the IDU microprocessor.
This alarm is generated in case of a communication
problem on MGMT1 or 2 serial port
This alarm is generated in case of a communication
problem between the two IDUs of the link
Corrective action
Check cable and receive level.
Replace the Cable Interface Module
Corrective action
Check Ethernet cable and configuration
Replace the IDU
Check cables and port configuration
Establish the link (several possible
causes)
Page 101/142
Issue 04 : July 2005
288055571-04