User's Manual Part 2

Initial Power–Up Test
MAY 2004 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU 5-11
PRELIMINARY
Initial Power–Up Tests
Potentially lethal voltage and current levels are present in
the Compact BTS. This test must NOT be performed
without a second person present capable of administering
emergency medical treatment. Remove all decorative metal
before beginning this test. Do NOT wear a grounding strap
when performing voltage measurements.
WARNING
BTS Initial Power–Up
Perform the procedure in Table 5-10 to verify input power. Once power
has been applied the cards and modules within the BTS should begin
operating within specifications.
Table 5-10: Procedure for BTS Initial Power–Up
Step Action
NOTE
If the BTS is being utilized in an outdoor configuration, perform this procedure after the TME has
been verified as operational.
1 Ensure that DC power source is OFF.
2 Connect DC power to BTS DC Power input.
3 Turn on DC power source.
4 Use a DMM (set to VDC) to verify the –48 V power output is within –60 to –40 VDC. Adjust DC
power source as necessary. (+27 V is within +20 to +34 VDC)
5 On the BTS, set the 20A or 25 A breaker to ON (push in). See Figure 5-3.
6 If not already done, install the fan module, note that the fan module begins operating. Feel for air
movement at the exhaust vent on top of the BTS.
7 Ensure that all circuit boards and modules are seated and locked into their associated slots.
cCLPA Initial Power –Up
Perform the procedure in Table 5-11 to perform the initial power–up.
Table 5-11: Procedure cCLPA Initial Power–Up
Step Action
NOTE
If the cCLPA is being utilized in an outdoor configuration, perform this procedure after the PDE has
been verified as operational.
1 Ensure that DC power source is OFF.
table continued on next page
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