User's Manual

Table Of Contents
BTS Redundancy/Alarm Testing68P09255A61-4
Aug 2002
1X SC 4812T BTS Optimization/ATP Software Release 2.16.1.x
FIELD TRIAL
3-95
Figure 3-25: -48 V BTS C-CCP and Power Conversion Shelf Fan Modules
FAN
MODULE
PWR/ALM
REAR
FRONT
FAN
MODULE
PWR/ALM
REAR
FRONT
FAN
MODULE
PWR/ALM
REAR
FRONT
FAN MODULES
LATCHES
FW00489
FAN MODULES
LATCHES
FAN
MODULE
PWR/ALM
REAR
FRONT
FAN
MODULE
PWR/ALM
REAR
FRONT
BBX Redundancy
Follow the steps in Table 3-51 to verify redundancy of the BBXs in the
C-CCP shelf. Alarms reported by the master GLI (displayed via the
alarm monitor) are also verified. This test can be repeated for additional
sectors at the customers discretion.
Table 3-51: BBX Redundancy Alarms
Step Action
n WARNING
Any BBXs enabled will immediately key-up. Before enabling any BBX, always verify that the TX
output assigned to the BBX is terminated into a 50 W non-radiating RF load! Failure to do so could
result in serious personal injury and/or damage to the equipment.
1 Enable the primary, then the redundant BBX assigned to ANT 1 by selecting the BBX and
Device>BBX/MAWI>Key.
2 Observe that primary BBXs key up, and a carrier is present at each respective frequency.
3 Remove the primary BBX.
4 Observe a carrier is still present.
The Redundant BBX is now the active BBX for Antenna 1.
5 Replace the primary BBX and reload the BBX with code and data.
6 Re-enable the primary BBX assigned to ANT 1 and observe that a carrier is present at each respective
frequency.
7 Remove the redundant BBX and observe a carrier is still present.
. . . continued on next page
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