E-Lins D120 Series DTU Manuel d'utilisateur télécharger pdf (Page 5)

 D120SeriesDTUUserManual

E‐LinsTechnologyCo.,Limited

 Chapter 2

2 Introduction

2.1 Brief

D120 Serials is a GPRS/CDMA DTU with TCP/IP Protocol embedded. It has two

comparativelyindividualparts: IP Module with TCP/IP,software interface is AT commands;and

GPRS/CDMA Module, supports all the AT Commands. All the standard AT Commands are

transferredtoGPRS/CDMAModuleviathetransparentModeofIPModule.

D120

SerialsisusuallyapplicabletotheHOST,whichhasnoTCP/IPbuthasserialinterface,such

asSCMDataCollectionTransmissionSystem.

2.2 Features

z Compactandeasytointegrateintoyoursolution;

z Multi‐flexibleandcompactdatainterface,TTL,232and485,TTLand232arereduced

toRx,Tx,GND;

z SupportsmoreIPProtocolfamilies;

z Data transmission via Transparent transfer Mode, enters transmission mode when

poweron;

z Multi‐operating

statusLED;

z Optimizedmodularizationdesign,easytoupgrade.

2.3 Specification

D120RadioFrequency

UseofGSMphase2/2 + 

GSM850Mhz/900MHz/1800MHz/1900Mhz

Outputpower:Class4(2W)atEGSM900Class1(1W)atDCS1800



D120Powerconsumption:

Speechmode:300mA

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E-Lins D120 Series DTU Manuel d'utilisateur Page 5