User's Manual

BTS Redundancy/Alarm Testing68P09258A31–A
Oct 2003
1X SCt 4812T BTS Optimization/ATP
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Table 3-53: 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.
8 The Primary BBX is now the active BBX for ANT 1.
9 Replace the redundant BBX and reload the BBX with code and data.
10 Re-enable the redundant BBX assigned to ANT 1 and observe that a carrier is present at each
respective frequency:
11 De-key the Xcvr by selecting Device>BBX/MAWI>Dekey.
12 Repeat Steps 1 through 11 for additional BBXs/antennas, if equipped.
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