Metrohopper Unit Alarms - Nokia MetroHopper User Manual

Radio with fc rri/fxc rri
Table of Contents

Advertisement

Loss of frame alignment
Severity: Critical
Fault code: 81
Meaning: 1) IU has lost frame alignment
2) Platform interface has lost frame alignment.
Instructions: 1) -Check from the Configuration view that all installed units are present. A faulty OU may not be
displayed in Configuration view. Try connecting power feed off and back on. If the OU still is not present, replace
it.
- Check that the radios are configured correctly (i.e. no 'configuration error' or 'fault in unit' alarms).
-If RX level is good enough, check that both ends of the hop are set to same capacity and that Flexbus
interfaces are in use, and that the outdoor units' interleaving settings are same at both ends of the hop. Check
with Flexbus loop to equipment whether the IU locks to its own signal. If not, replace the indoor unit.
2) -Check from the Cross-connection view that the right signal is connected to this interface at both ends of the
hop.
-Use platform interface loop to equipment to check that platform interface locks to its own TX signal. If not,
replace the unit.
-Use Flexbus loop to equipment and check that platform interface locks to its own signal. If not, replace the unit.
Cancelling:
A.3

MetroHopper unit alarms

Fault in power supply
Severity: Critical
Fault code: 0
Meaning: One (or more) of the supply voltages is low (difference between nominal and real voltage is bigger
than 10%).
Instructions: Replace the unit and return the faulty one to maintenance.
Cancelling:
40 (42)
© Nokia Networks Oy
Unit/SB type:
1) Flexbus
2) Platform interface
Consequence: 1) AIS is connected to all received Flexbus channels.
2) AIS is connected to the receiving direction of the platform interface.
SB: Radio interface
Consequence:
Commissioning and Maintenance
DN99611394
Issue 2-0 en

Advertisement

Table of Contents
loading

Table of Contents