EDW-ML8021 GSM GPRS Modem User Manual
Contents
1. AT or at string until receiving OK string from module If you need to using fixed baud rate Then an AT IPR x amp W should be sent to module and save the configuration to flash memory of module After these configurations the URC RDY would be received from the Serial Port of module every time when the module is powered on Refer to Chapter AT IPR in AR command manual 3 3LED indication 3 3 1 Red Led is the power indication 3 3 2 Yellow Led is the RING indication 3 3 3 Green Led is the Working state indication The Working state of this LED is list in the table 6 Table 6 Working state indication Page 6 EDW ML8021 GSM GPRS Modem User s Manual The module is not running Power Off 64ms On 800ms Off The module is not synchronized with network 64ms On 2000ms Off The module is synchronized with network 64ms On 600ms Off GPRS data transfer is ongoing 4 Mechanical dimension Tamm _2l Umm 21 0mm Page 7 EDW ML8021 GSM GPRS Modem User s Manual 5 Product List EDW ML8021 Module Antenna Standard Supply Power Adapter DC 5V2A RS 232 Cable Standard Supply Page 82. 21 GSM GPRS Modem User s Manual 1 Introduction This document defines the EDW ML8021 module series and describes the hardware interface of the EDW ML8021 module that connects to the customer application and the hardware interface This document can help customer quickly understand module interface specifications electrical and mechanical details With the help of this document associated application notes and user guide customer can use EDW ML8021 module to design and set up mobile applications quickly 2 Product concept The EDW MLS021 is a Quad band GSM GPRS engine that works at frequencies GSM850MHz GSM900MHz DCS 1800MHz andPCS1900MHz The EDW MLS021 features GPRS multi slot class 12 and supports the GPRS coding schemes CS 1 CS 2 CS 3 and CS 4 The EDW ML8021 is integrated with Internet service protocols which are TCP UDP FTP and HTTP Extended AT commands have been developed for customer to use these Internet service protocols easily Table I Module key features Feature Implementation Power supply Single supply voltage 5 0V 12V Freguency bands e Quad band GSM850 GSM900 DCS1800 PCS1900 e The module can search these freguency bands automatically e The freguency bands can be set by AT command e Compliant to GSM Phase 2 2 Transmitting power e Class 4 2W at GSM850 and GSM900 eClass I 1 W at DCS1800 and PCS1900 GPRS connectivity e GPRS multi slot class 12 default e GPRS multi slot class 1 12 configu
3. EDW ML8021 GSM GPRS Modem User s Manual EDW ML8021 GSM GPRS Modem User s Manual one 6 GPRS MODEM SERIES 4 o www eddywireless com i i y cc www eddywireless biz IRELESS o sales eddywireless com Page 1 EDW ML8021 GSM GPRS Modem User s Manual Content EDW ML8021 GPRS Modem User s Manual osaseaneenen ane nane eaaa nen anana nana nanan nana nan anana anna YF ns anane anan la AAT CUNO aaa EN NAR aa alts tes aaa bana ag aa an ag bapa aapa a ageh ahan beh dai a aaa anaa aaa aaa a 3 PANA La ON UC INC SIN KANA NA NAN YO Y E MN RS ENN NN HN EEN KA 3 3 PP MICA OT mera SRI pa aa aa ag FY RY FFR a aaa aaa FN I pi kian anawa a AYN aaa ina kan RF aga pan 5 AP G S CET 0 1 ee ee ne en een ne Pen ne nn tee ee ete GW RUN A 5 EPAD EE TIONS a anaa E sive sacs voc len eo sek aa aaa O ad E CYNFYN adan ahaaa aan 5 Da Me AMM TC ANA OU EY FFA CWT NN AFR YN Ag aaa aa a aa a a an an aan gah E FN Y 6 33L Red Led isthe power indic AUCS saanane aa aaa aa en ag aga NR RH an ee 6 3 3 2 Yellow Led is the RING TR CHC mae nisan aaa aaa a o anaa a a Ag anaa Na NR aa nagan ka NOD 6 3 3 3 Green Led is the Working state indicates u euuuu inr YL LIII anan LI anana rr rr rn nen 6 AEC CR iea TO EN S O sasana aana aa aa na aa aa RAN aaa a an YN NE YN FF WE R Y an aka aa a a aa NF 7 BE OC Nase ana ana anan a na FUN FR FREE ada dana Ba NN FFY FR HF FF EN YH HY FFAN YR 8 Page 2 EDW ML80
4. er air interface CS 1 9 05kbps 18 1kbps 36 2kbps CS 2 13 4kbps 26 8kbps 53 6kbps CS 3 15 6kbps 31 2kbps 62 4kbps CS 4 21 4kbps 42 8kbps 85 6kbps Page 4 EDW ML8021 GSM GPRS Modem User s Manual 3 Application interface 3 1Pindescription 3 2 Operating modes The table below briefly summarizes the various operating modes referred to in the following chapters Table 4 Overview of operating modes Normal GSM GPRS The module will automatically go into SLEEP mode if operation SLEEP DTR is set to high level and there is no interrupt such as GPIO interrupt or data on serial port In this case the current consumption of module will reduce to the minimal level During SLEEP mode the module can still receive paging message and SMS from the system normally GSM IDLE Software is active The module has registered to the GSM network and the module is ready to send and receive GSM TALK GSM connection is going In this mode the power consumption is decided by the configuration of Power Control Level PCL dynamic DTX control and the Page 5 EDW ML8021 GSM GPRS Modem User s Manual working RF band GPRS IDLE The module is not registered to GPRS network The module is not reachable through GPRS channel GPRS The module is registered to GPRS network but no STANDBY GPRS PDP context is active The SGSN knows the Routing Area where the module is located at The PDP context is active but no data t
5. rable e GPRS mobile station class B Temperature range e Normal operation 35 C 80 C e Restricted operation 45 C 35 C and 80 C 85 C e Storage temperature 45 C 90 C DATA GPRS e GPRS data downlink transfer max 85 6 kbps e GPRS data uplink transfer max 85 6 kbps e Coding scheme CS 1 CS 2 CS 3 and CS4 Page 3 EDW ML8021 GSM GPRS Modem User s Manual e Support the protocols PAP Password Authentication Protocol usually used for PPP connections e Internet service protocols TCP UDP FTP HTTP MMS e Support Packet Switched Broadcast Control Channel PBCCH CSD e CSD transmission rates 2 4 4 8 9 6 14 4 kbps non transparent e Unstructured Supplementary Services Data USSD support e MT MO CB Text and PDU mode e SMS storage SIM card Group 3 Class 1 and Class 2 SIM interface Port SIM card 1 8V 3V Protected against ESD with a TVS diode array Serial interface e Support from 4800 bps to 115200 bps default auto baud rate e Support RS232 e Embed standard AT command CGSM07 05 and 07 07 Phonebook management Support phonebook types SM FD LD RC ON MC SIM Application Toolkit Support SAT class 3 GSM 11 14 Release 99 Physical characteristics 79 53 21mm 1 When the module works in this temperature range the deviations from the GSM specification might occur For example the frequency error or the phase error could increase Table 2 Coding schemes and maximum net data rates ov
6. ransfer is going on The module is ready to receive or send GPRS data The SGSN knows the cell where the module is located at GPRS DATA There is GPRS data in transfer In this mode power consumption is decided by the PCL working RF band and GPRS multi slot configuration Normal shutdown by sending the AT QPOWD 1 command using the PWRKEY pin The power management ASIC disconnects the power supply from the base band part of the module and only the power supply for the RTC is remained Software is not active The serial interfaces are not accessible Operating voltage connected to VBAT remains applied Minimum Use the AT CFUN command can set the module to a minimum functionality functionality mode without removing the power supply In this case the mode without RFpart of the module will not work or the SIM card will not be accessible removing power or both RF part and SIM card will be closed all but the serial port is still supply accessible The power consumption in this case is very low Note The module is set to auto baud rate mode AT IPR 0 in default configuration In the auto baud rate mode the URC RDY after powering on is not sent to host controller AT command can be sent to the module 2 3 seconds after the module is powered on Host controller should firstly send an AT or at string in order that the module can detect baud rate of host controller and it should send the second or the third
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