User's Manual Part 2b

Installing the BSPS Hardware Installation Guide

7-20 Airspan Networks Ltd. 02030311-05

7.6. Connecting BSPS Power to BSDUs

The BSPS’s DC Distribution unit provides circuit breakers for distributing power

output to BSDUs housed in the WipLL cabinet.

The DC Distribution unit contains a switch that provides an LVD circuit bypass

option. When this switch is activated the battery is no longer protected against deep

discharge and the system controller alarm is then activated.

The distribution rack is provided with front panel and rear panel terminations for

connecting to the BSPS main power rack.

To connect the BSPS DC power supply to the BSDU:

1. Attach the shielded power cable connector (supplied) end that contains the wire

for preventing power radiation, to the BSDU’s power port—labeled

POWER -

48 VDC. Ensure that the black-colored (i.e., negative) half of the connector is

positioned at the top and the red-colored (i.e., positive) half at the bottom.

Figure 7-10: BSDU front panel with power port and screw attachment for power

radiation immunity

2. Connect the power cable’s yellow/green lug wire, for radiation immunity, to the

BSDU chassis by using the screw attachment located alongside the power port,

as displayed in Figure 7-10.

Screw for power cable

radiation immunit

Power port