Instruction Manual
Table Of Contents
- Contents
- Figures
- Tables
- General Safety
- Introduction
- Preliminary Operations
- Optimization/Calibration
- Automated Acceptance Test Procedures (ATPs)
- Leaving the Site
- Basic Troubleshooting
- Data Sheets
- Test Matrix
- BBX Gain Set Point vs BTS Output
- CDMA Operating Frequency
- PN Offset/I & Q Register
- Test Equipment Preparation
- In-Service Calibration
- Index
Alarms Testing – continued
Apr 2001
3-85
SC4812ET BTS Optimization/ATP — CDMA LMF
DRAFT
Table 3-51: Multiple Rectifier Failure or Major Alarm
Step Action
1 With the rectifier module still in the unused shelf position fromTable 3-50 test procedures, turn the
AC breaker for the 1st shelf OFF.
2 Verify that a rectifier alarm is generated. Each of the two rectifier modules will illuminate two (2)
RED fail LED (DC and Power), and the Meter Alarm Panel and LMF will indicate a major alarm
(Rectifier Fail and Major Alarm). The RECTIFIER FAIL LED will illuminate.
3 Verify that the LMF reports both alarm conditions. (BTS #29, BTS #21, and BTS #24)
4 Turn the AC breaker for the 1st shelf ON. Verify that all alarms have cleared.
5 Return the rectifier module to its original location. This completes the alarm test on the power cabinet.
Single Rectifier Failure
(Six Rectifier System)
Table 3-52 gives instructions on testing single rectifier failure or minor
alarm in a six (6) rectifier system.
Table 3-52: Single Rectifier Fail or Minor Alarm
Step Action
1 Remove two(2) rectifier modules from shelf #2.
2 Turn the AC breaker OFF, for shelf #2.
3 Verify that a rectifier fail alarm is generated. The single rectifier module will illuminate two (2) RED
fail LED (DC and Power), and the Meter Alarm Panel and LMF will also indicate a minor alarm and
rectifier fail status. The RECTIFIER FAIL LED will illuminate.
4 Check that the LMF reports both of these alarm conditions. (BTS #24 and BTS #21)
5 Turn the AC breaker for this shelf ON and verify that Rectifier Fail and Minor Alarm conditions have
cleared.
Multiple Rectifier Failure (Six
Rectifier System)
Table 3-53 gives instructions on testing multiple rectifier failure or major
alarm in a six (6) rectifier system.
Table 3-53: Multiple Rectifier Failure or Major Alarm
Step Action
1 Replace one rectifier module previously removed and turn the AC breaker for this shelf, OFF.
2 Verify that a rectifier alarm is generated. Each of the two rectifier modules will illuminate a RED fail
LED, and the Meter Alarm Panel will indicate a major alarm (Rectifier Fail, Major and Minor
Alarm).The RECTIFIER FAIL LED will illuminate.
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