DTMA900 Datasheet Issue:02

DTMA (Dual Tower Mounted Amplifier) is both main and diversity branch

and fits with cross-polarization antennas. DTMA is installed near the antenna at

the tower top to improve receiver sensitivity of the base station. The usage of

DTMA will result in an increase of successful call attempts, reduction of call

drops, maximized data transmission rate, improved call quality and extended

handset talk time.

Features

High linearity and low noise performance .

Balanced LNA design and power failure bypass for high reliability .

Light weight and compact design .

Wall mounting and mast mounting .

Built-in lightning protection .

Support AISG1.1 or AISG2.0 protocol .

Appearance And Block Diagram

Product Description

DTMA2100 Double Dual Duplex Tower Mounted Amplifier DatasheetTechnical Specifications

Item

Frequency rangeBandwidthInsertion lossReturn lossTx-Rx rejectionGroup delay variationInput power

Intermodulation products in Rx band

Frequency rangeBandwidthReturn loss

Insertion loss in by-pass modeGainGain rippleNoise figureOutput 1dB compressionOIP3Group delay variationRx-Tx rejection before LNARx-Tx rejection after LNA

CWA Mode AISG ModeDC supply voltage 9V～15V 9V～30VOperating current per TMA(without RET) 100mA～300mA 50mA～470mAAlarm management 340mA～760mA AISGPower consumption

Operating temperature rangeIP ratingMTBFEMCLightning protection

RF connectors

AISG connector

MountingWeightMast diameterDimensions(H×W×D)

≤5.6kg(with brackets)

301mm×196mm×83mm(without connectors, without brackets)

Tx Specifications

Mechanical Specification4×7/16 female8-pin female, IEC 60130-9(Pin 3: RS485B, pin 5: RS485A, pin 6: 9V～ 30 V DC,pin 7: DC return, other pins: not connected)Wall mounting/Mast mounting

IP67>1000000hETS 300 342-3

≥55 dBElectrical Specifications

10kA (8/20us)

<5WEnvironmental Specification

-40℃～+65℃

≥12 dBm

≥25 dBm<40ns@5MHz

≥75 dB

≤2.2 dB12±1 dB

≤1.0 dBTyp. 1.4 dB

Specification

935～960MHz25MHz

≤0.6dB(Full temperature)

30mm～125mm

≥18dB

≥45dB<40ns@5MHz<160 W (+52 dBm) CW<1.6 kW (+62 dBm) peak≤-117dBm(2 TX carriers at 43 dBm)

Rx Specifications890MHz～915MHz25MHz

≥18dB (DC ON)≥15dB (DC OFF)

Mechanical

Address: Huawei Technologies, Bantian Base, Longgang District, Shenzhen 518129 P.R.China.