ALM-4246 RET Position Lose Alarm

Description

The RET antenna cannot detect the correct downtilt.

Attribute

Alarm ID Alarm Severity Alarm Type
4246 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.

88:DRRU

96:MRRU

100:MRFU

101:GRFU

102:GRRU

3 Board No.

Number of the fault board

0-71:DRRU

4 PassNo

Number of the passage where the faulty board is located.

5 SubLink No.

Alarm sub-category number

Sub No.0:ALD communication alarm 1

Sub No.1:ALD communication alarm 2

Sub No.2:ALD communication alarm 3

Sub No.3:ALD communication alarm 4

Sub No.4:ALD communication alarm 5

Sub No.5:ALD communication alarm 6

Sub No.6:ALD communication alarm 7

Sub No.7:ALD communication alarm 8

Sub No.8:ALD communication alarm 9

Sub No.9:ALD communication alarm 10

Sub No.10:ALD communication alarm 11

Sub No.11:ALD communication alarm 12

Sub No.12:ALD communication alarm 13

Sub No.13:ALD communication alarm 14

Sub No.14:ALD communication alarm 15

Sub No.15:ALD communication alarm 16

Sub No.16:ALD communication alarm 17

Sub No.17:ALD communication alarm 18

Sub No.18:ALD communication alarm 19

Sub No.19:ALD communication alarm 20

Sub No.20:ALD communication alarm 21

Sub No.21:ALD communication alarm 22

Sub No.22:ALD communication alarm 23

Sub No.23:ALD communication alarm 24

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.

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

Improper tilt of the RET antenna affects the coverage.

System Actions

None.

Possible Causes

The hardware of the RET antenna is faulty.

Procedure

  1. Reset the RET antenna ,Observe whether the alarm is cleared

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

    N=> The alarm is not cleared. Go to step 2.

  2. Calibrate the RET antenna again. Check if the alarm is cleared.

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

    N=>Go to Step 3.

  3. Replace the faulty RET antenna controller. Check if the alarm is cleared.

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

    N=>Go to Step 4.

  4. Replace the faulty RET antenna. Check if the alarm is cleared.

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

    N=>The alarm is not cleared. Please contact Huawei Customer Service Center.


Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.