User's Manual Part 2

Battery Backup DC Power Input (Outdoor Configuration) – continued

5-10 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU MAY 2004

PRELIMINARY

Table 5-9: Procedure to Verify Battery Backup DC Power Test

Step Action

2 If not already done, connect Battery Backup DC power cable to batteries.

3 If not already done, remove safety shield covering DC terminal block.

4 Verify that Battery Backup DC power cable is securely connected to DC terminal block of PDE.

5 Verify that circuit breakers on PDE front panel are disengaged (pulled out or set to “O” (OFF)).

6 Turn on Battery Backup source.

7 Using a DMM set to VDC, measure the voltage at the DC terminal block. DMM indicates VDC in the

range –60 – 40 VDC.

8 Remove DMM.

9 If there is nothing further to do, replace safety shield. Secure to cabinet with 2 nuts and washers. Use

an adjustable wrench to tighten nuts. Torque nuts to 3.4 N–M (20 in–lbs).