User manual

ADCP-75-154 • Issue 3 • August 2006
Page 1
© 2006, ADC Telecommunications, Inc.
1 PRODUCT OVERVIEW
1.1 General Description
The ClearGain tower mounted amplifier system is composed of some combination of three
functional components: the ClearGain Power Distribution Unit (PDU), the Masthead Unit
(MHU), and the Bias-T. Figure 1 shows where these components are located in a typical
application on a communications tower.
Figure 1. Functional Components of a ClearGain System
BASE
TRANSCEIVER
STATION
21486-A
ClearGain PDU
(SINGLE MODE)
MASTHEAD UNIT (MHU)
BTS ANT
900
OR
1800
Power Distribution Unit
MHU
DISCONNECT MHU 1ALARMINPUT
+ Ð
MHU 2 MHU 3 MHU 4 MHU 6MHU 5
OKFAI LCOMNO NC OK OK OK OK OK
BTS ANT
DC
Bias-T kit
Freq: 800 - 2200MHz
Temp: -40 to +65 C
Input: 5 to 24VDC
Max Current: 2A
P/N: 1344027
S/N: XXXXXXXXX
Date: YYYY/MM/DD
ASSEMBLED IN
KOREA
BIAS-T