M900/M1800 BTS3X Series Base Transceiver Station
Hardware Description Manual
3 Board
Issue 01 (2006-11-18)
Huawei Technologies Proprietary
3-43
ID
Color Meaning
Indication
RUN Green Module
monitoring
indicator
Flashing: Monitoring module operation is
normal.
3.13 PSU
3.13.1 Functions
The PSU is a built-in power supply module. The BTS3X supports multiple power input
modes, and the PSU is divided into AC/DC unit and DC/DC unit accordingly. Different power
supply modes can be configured for the BTS3X according to different power supply modules:
!
In 220 V AC power mode, the AC/DC unit is configured.
!
In –48 V DC power mode, the DC/DC unit is configured.
!
In +24 V DC power mode, no PSU is required.
One PSU provides power supply for two TRXs. The power supply module adopts N
+
1
current equalizing hot backup mode.
3.13.2 Panel