ADCP-75-214 • Issue 2 • September 2006

1 PRODUCT OVERVIEW

1.1General Description

The ClearGain 1800 or 2100 MHz Dual Inline Tower Mounted Amplifier (TMA) system are composed of some combination of three functional components: a ClearGain Power Distribution Unit (PDU), a Masthead Unit (MHU) / Tower Mounted Amplifier (TMA), and a Bias-T. Figure 1 shows where these components are located in a typical application on a communications tower.

MASTHEAD UNIT (MHU)

ClearGain

DUAL

INLINE

BIAS-T

BTSANT

Bias-T kit

 

Freq: 800 - 2200MHz

ASSEMBLED IN

Temp: -40 to +65 C

Input: 5 to 24VDC

KOREA

Max Current: 2A

Date:YYYY/MM/DD P/N: 1344027

 

S/N: XXXXXXXXX

DC

ClearGain PDU

G

W

 

 

 

 

 

 

 

B

R

 

 

 

 

 

 

 

-

+

NO COM NC

FAIL

G A B

MHU

OK

OK

OK

INPUT

ALARM

 

RS485

CONNECT

MHU 1

MHU 2

MHU 3

21297-B

BASE

TRANSCEIVER

STATION

Figure 1. Functional Components of a ClearGain TMA System

One PDU may support up to three dual inline MHUs of the same frequency. Each MHU requires a separate Bias-T. The ClearGain TMA system also includes power cables and alarm cables.

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© 2006, ADC Telecommunications, Inc.