User's Manual Part 2b

Installing the BSPS Hardware Installation Guide
7-2 Airspan Networks Ltd. 02030311-05
7.1. Overview
The WipLL Base Station Power Supply unit (BSPS) is an optional WipLL unit that
provides power (and power redundancy) to the BSDU/BSR if no –48 VDC power
supply exists at the base station.
The BSPS front panel is displayed in Figure 7-1.
Figure 7-1: BSPS front panel
The BSPS provides the BSDUs/BSRs with the following:
! Power supply of –48 VDC
! Power redundancy in case of power failure. The BSPS charges a battery bank
that provides this power redundancy during mains failure. Thus, the BSPS acts
as a DC-UPS with a battery connected to it. The size of the battery determines
the backup and charging time. Since the system is current limited, the maximum
battery size is based on that limit.)