User's Manual

Ericsson Internal
INSTRUCTIONS 10 ( 14 )
/ XSNBRKI 4/1532-LZA 701 0001 Uen
EAB/ FJG/RSP ( Louise Cederlund) 2008-05-14 G
Prepared (also subject responsible if other) No.
Approved Checked Date Rev Reference
Table 4 Checking Released Alarms
Check the Following:
Yes
The external alarm indicator on the DXU goes off
The alarm disappears from the OMT
9. Repeat steps 6 to 8 for all defined external alarms.
10. Close the RBS Event Monitor window when finished.
11. Put back the external alarm connection unit and the Distribution Frame
(DF) cover.
7 Testing Battery Backup
This section describes how to check that the batteries in the Battery Backup
System (BBS) are able to supply DC power when the AC power is switched off.
To pass the test, the RBS must continue running when turning off the mains
power.
Note: The test must be performed only if a BBS is connected to the RBS.
Preconditions
Before starting the test, ensure that:
• The batteries in the BBS have been charged for at least half an hour
• The section on handling and connecting batteries in document Personal
Health and Safety Information has been read
Caution!
Improper handling of batteries can result in the batteries short-circuiting, which
can result in serious injury due to high energy levels. Exercise the necessary
care when working with batteries.
Testing the Battery Backup
1. Switch off the incoming AC power to the RBS, using the main switch
outside the cabinet. See Site Installation Documentation.