User Manual

AS4000 Operations and Maintenance

Section

605-0000-431

. Issue 1.6. Date3/2/99

DLP-021

Page 49 of 60 © Copyright Airspan Communications Corporation 1999

CHANGING THE TYPE 1 PSU.

The Type 1 PSU consists of an AC Brick Power Unit and a Junction Box.

The Type 1 PSU exists in both 24V and 30V versions ensure that if changing the PSU on

a ST-D128 installation that a 30V Type 1 PSU is used.

STEP PROCEDURE

1. PSU (Type 1) Connection to the Junction Box

1. The PSU is free standing and should be placed near to the Junction Box in a non-

hazardous location.

2. Cut the 3 pin socket off the DC output cable and trim and prepare ends for connection to

the Junction Box as shown in Table 7 below.

Terminal Colour Description

4 Red V+ (24V)

5 Green Earth/Screen

6 Black 0V

Table 7. PSU (Type 1) to Junction Box Connections

2. AC Power Cord Installation

1. Use a supply cord fitted with a mains plug in accordance with local requirements.

2. Plug the AC supply cord into the IEC connector on the PSU(Type 1).

Notes:

1. The AC PSU (TYPE 1) is double insulated. It still has a 3-pin IEC socket and therefore

uses a 3-wire cable and mains plug. There is no earth wire connected to the IEC socket

inside the unit.