ALM-11788 GPS satellite signal lost alarm

Description

When GPS receiver can not receive the GPS satellite signal, the alarm occurs.

Alarm ID	Alarm Severity	Alarm Type
11788	Warning	Fault

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. 99:DGPS
3	Board No.	Number of the fault board 0-35:DGPS
4	PassNo	Number of the passage where the faulty board is located.
5	SubLink No.	Alarm sub-category number 255:None
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; 15:BTS3012AE; 16:BTS3012 II;
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

The GPS receiver cannot lock the satellite.

None.

The GPS signals might temporarily get lost due to external reasons, such as shielding obstacles or adverse weather conditions.

Check whether the GPS antenna failure alarm is reported on the LMT.
Y=> Handle the alarm according to handling suggestions in GPS antenna failure alarm.

N=> Go to step 2.
Check the GPS antenna.
1. Check whether the GPS antenna is shielded by obstacles.
  Y=> Go to step b.
  
  N=> Go to step 3.
2. Remove the obstacles, and then check whether the alarm is cleared.
  Y=> The alarm handing ends;
  
  N=> Go to step 3.
Check the DGPS board.
Reset the DGPS board, and then check whether the alarm is cleared.

Y=> The alarm handing ends;

N=> Go to step 4.
Replace the DGPS board, and then check whether the alarm is cleared.
Y=> The alarm handing ends;

N=> Go to step 5.
Replace the GPS board, and then check whether the alarm is cleared.
Y=> The alarm handing ends;

N=> Contact Huawei Customer Service Center.