Nokia MetroHopper User Manual page 52

Error rate > 1 E-3
Severity: Critical
Fault code: 99
Meaning: 1) Received signal bit error rate is worse than 1.0 * 10
2) Received platform interface error rate is worse than 1.0 * 10
Instructions: 1) -'Alarm signal received' causes also this alarm
- Signal may be faded in the radio path or antenna alignment has changed.
2) -If the Flexbus where this interface has been connected has the same alarm, see its instructions.
-If Flexbus does not have this alarm, use loop to equipment for both the platform interface and the Flexbus. If
either of the loops gives this alarm, replace the unit.
Cancelling: If the radio signal is faded it will be restored when the fading stops. If antenna alignment has
changed, align the antennas according to the instructions in the radio documentation.
Error rate > 1 E-6
Severity: Critical
Fault code: 102
Meaning: Received platform interface error rate is worse than 1.0 * 10
Instructions: Most probably radio path fading causes this. If it remains for a long time, use loop to equipment for
both the platform interface and Flexbus. If either of the loops gives this alarm, replace the unit.
Cancelling:
Far-end alarm
Severity: Major
Fault code: 179
Meaning: Far end has lost frame alignment.
Instructions: Check the signal flow from the transmit direction of the alarming interface to the far end.
Cancelling:
DN99611394 © Nokia Networks Oy
Issue 2-0 en
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.
Unit/SB type: Platform interface
Consequence:
Unit/SB type: Platform interface
Consequence:
-3
-3
-6
Alarm descriptions
37 (42)