User's Manual Part 1

Power, Earth Ground, and Battery Cabling – continued
MAY 2004
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1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU
PRELIMINARY
Indoor Power Considerations
The BTS is designed for –60 to –40 VDC power input.
The power for the Indoor BTS configuration is:
S DC power
Outdoor Power
Considerations
The TME/BTS and cCLPA are designed for –60 to –40 VDC power
input from the PDE.
The PDE is designed for 200–240 VAC input.
The power for the Outdoor BTS configuration is:
S AC power
S DC power (converted from AC)
S DC power (Battery Backup if used)
Neither the “+” or “–” terminal of the DC Input is
connected to the BTS ground. If a negative supply input is
provided, the “+” terminal of the DC input must be
connected to the Master Ground Bar. By connecting the
“+” terminal of the DC input to the MGB, a –48VDC
(nominal) system is created.
NOTE
The system configuration determines which power cables are installed.
The ground cable is always installed first. Based on the system
configuration perform the appropriate procedures described in Chapter 4.
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