User's Manual Part 3

BTS Redundancy/Alarm Testing – continued
Mar 2001
3-87
68P09253A61
SCt4812T CDMA BTS Optimization/ATP
DRAFT
Power Supply Redundancy
Follow the steps in Table 3-47 to verify redundancy of the power supply
modules. Alarms reported by the master GLI (displayed via the alarm
monitor) are also verified.
Table 3-47: Power Supply/Converter Redundancy (BTS Frame)
Step Action
1 Select the MGLI (highlight) and from the pulldown menu select:
Device>Set Redundant Sector>None/0
Device>Set Pilot>Only>Carrier–#–1-1
Device>Set Pilot>Only>Carrier–#-1-1 and Pilot Gain = 262
2 Select (highlight) BBX–1 and from the pulldown menu select Device>Key XCVR.
3 Set XCVR gain to 40 and enter the correct XCVR channel number.
4 Remove PS–1 from the power distribution shelf (see Figure 3-19).
– Observe that an alarm message is reported via the MGLI as displayed on the alarm monitor.
– Verify no other modules went OOS.
5 Re-install PS–1.
Observe the alarm clears on the alarm monitor.
6 Repeat steps 4 and 5 for PS–2 and PS–3.
NOTE
For +27 V systems, skip to step 7 through step 10.
7 On –48 V systems, remove PS–4 (see Figure 3-20).
– Observe that an alarm message is reported via the MGLI as displayed on the alarm monitor.
– Verify no other modules went OOS.
8 Re-install PS–4.
Observe the alarm clears on the alarm monitor.
9 Repeat steps 7 and 8 for PS–5 through PS–9.
10 Verify that all PWR/ALM LEDs are GREEN.
11 Select BBX-1 and Device>Dekey XCVR
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