Service Manual

GSM-204-323
Horizonmacro outdoor power supplies
31st Oct 01
Technical Description: Horizon macro outdoor
68P02902W02-A
CONTROLLED INTRODUCTION
Tech. 4–1
Horizon macro outdoor power supplies
Power supply
overview
The Horizon macro outdoor power supplies consist of the following elements:
 The power supply unit (PSU) containing:
– AC distribution and input ac supply connection.
– DC distribution and internal battery back-up.
– The PSU Control and Alarm Board (CAB).
– The Outdoor Power Supply Modules (TOPSMs).
 The main cage Power Supply Modules (PSMs).
 The Circuit Breaker Module (CBM).
 The BCU Power Supply Module (BPSM).
Optional external battery back-up can also be fitted, housed in the AEH.