4118 4-way Diversity receiving alarm

Description

This alarm is reported when any of an antenna from antenna 1 to antenna 4 is faulty.

Attribute

Alarm ID Alarm Severity Alarm Type
4118 Major Fault

Parameters

ID Name Meaning
1 Site No.

Number of the site where the faulty board or module is located

Value range: 0-2047

2 Board Type

Number of the type which the faulty board belongs to.

65:DTRU/GTRU/DDRM

88:DRRU

92:DRFU

96:MRRU

100:MRFU

101:GRFU

102:GRRU

151:QTRU

3 Board No.

Number of the fault board

4 PassNo

Number of the passage where the faulty board is located.

5 SubLink No.

Alarm sub-category number

0:antenna_1 alarm

1:antenna_2 alarm

2:antenna_3 alarm

3:antenna_4 alarm

6 Cell Index

Index of the cell where the board or module is located

0-2047: Cell index of the faulty cell in the data configuration

65535: None

7 Site Type

Type of the site where the faulty board is located.

12:BTS3012;

13:BTS3006C;

14:BTS3002E;

15:BTS3012AE;

16:BTS3012 II;

17:DBS3900 GSM;

18:BTS3900 GSM;

19:BTS3900A GSM;

8 RackNo

Number of the rack where the faulty board is located.

9 BoxNo

Number of the subrack where the faulty board is located.

10 SlotNo

Number of the slot where the faulty board is located.

11 Site Name

Site Name

12 Alarm Attribute

Alarm Character

0:Normal

1:Transient Count

Impact on the System

The receiving sensibility lowers, reducing the coverage area.

System Actions

None

Possible Causes

  • Faulty Antenna feeder.
  • Faulty hardware of DTRU.

Procedure

  1. Check the corresponding antenna and feeder.

    Use a sitemaster to check the VSWR based on the alarm tributary number. Check whether the antenna is normal. If no, go to step [2].

  2. Replace the faulty antenna according to the engineering requirements.

  3. Perform a Level-4 reset of the BTS through the LMT or Site Maintenance Terminal System and check whether the alarm is cleared.

    Y=> The alarm is cleared. The alarm handling is complete.

    N=> The alarm is not cleared. The fault may lie in faulty hardware of DTRU. Please contact Huawei Customer Service Center.


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