Sony Ericsson GM29 User Manual

GM29

User Guide

Draft PA2

5.7.02

The productdescribedin this document conforms to the Radio and
Telecommunication Terminal Equipment (R&TTE) directive 99/5/EC with
requirements covering EMC directive 89/336/EEC and Low Voltage directive
73/23/EEC.The product fulfils the requirements according to
3GPP TS 51.010-1, EN 301 489-7 and EN60950.

SAR statement: This product is intended to be used with the antenna or other
radiating element at least 20cm away from any part of the human body.

The information contained in this document is the proprietary information of
Sony Ericsson Mobile Communications International.The contents are
confidential and any disclosure to persons other than the officers, employees,
agents or subcontractors of the owner or licensee of this document, without the
priorwrittenconsentof Sony EricssonMobile CommunicationsInternational,
is strictly prohibited. Further, no portion of this publication may be reproduced,
storedin a retrievalsystem,ortransmittedin any form or by any means, electronic
or mechanical, including photocopying and recording, without the prior written
consentof SonyEricssonMobile CommunicationsInternational,the copyright
holder.

First edition (XXXX 2002)
SonyEricssonMobileCommunicationsInternationalpublishesthisdocument

without makingany warranty as to the content contained herein. Further
Sony Ericsson Mobile Communications International reserves the right to
makemodifications,additionsand deletionstothisdocument due to typographical
errors, inaccurate information, or improvements to programs and/or equipment at
anytime and without notice.Such changeswill, neverthelessbe incorporated into
new editions of this document.

All rights reserved.
© Sony Ericsson Mobile Communications International, 2002
Publication number: LZT 123 7360 PA1
Printed in UK

Contents

Introduction...............4

Description........................4

Highlights ........................4

Installation................5

Safetyand Installation

Information.......................5

SecuringtheModem................5

ElectricalConnections.......6

PowerConnector...................6

AudioConnector...................7

AntennaConnector.................7

RS232SerialPort..................8

SIMCardReader...................9

Operation................10

SwitchingOntheModem...........10

SwitchingOfftheModem...........10

ResettingtheModem...............10

OperatingStates/LED..............10

Accessories . .............11

ATCommands ............11

TypeApproval ............11

SoftwareUpdates..........11

Certification..............11

Troubleshooting...........11

ModemNotWorking...............11

SoftwareCrashed..................11

No Communication,

ModemSwitchedOn...............11

Service and Support . . . . . . . . 11

TechnicalData............14

DataFeatures.....................14

ShortMessageServiceFeatures......14

VoiceFeatures....................14

FaxFeatures......................14

DataStorage .....................14

PowerSupply.....................15

AveragePowerConsumption........15

RadioSpecifications...............15

AudioSpecifications...............16

SIMCardReader..................16

ElectricalConnectorsandLED.......16

MechanicalSpecification ...........16

Environmentalspecifications ........17

Certification......................17

3

Introd uction

Description

The dual band EGSM900/1800MHz GM29,is
a GSM/GPRS serial modem. The modem is a
powerfuland flexibledevicethat can be used in
a wide range of telemetry and telematics
applicationsthatrely on theremoteexchange of
data,voice,SMS or faxes via the GSM cellular
network.

Small and lightweight, the GM29 has standard
connectors and an integral SIM card reader
makingit easyandquickto integrate.Aswella s
providinga standard RS232 serial
communicationinterfacetheGM29 alsohas an
audiointerfaceallowing an analoguehandset to
be connected. When the GM29 is integrated
into an external application, a wireless
communicaions system is created.

A typicalend-to-end systemconsists of a micro
controller in an external application
communicating, via the GM29 modem, with a
remote terminal or host using the GSM
network.The micro controller uses a set of AT
commands to control the modem, and to set up
the end-to-end communicationslink, via its
9-way RS232 serial interface.

GM29serial modemsare intendedto be usedby
manufacturers, system integrators, application
developers and developers of a wide range of
equipment and business solutions,typicallyin
the following fields:

• Security and alarms

• V ending

• Monitoring and control

• Utilities

• Fleet Management
SimplyconnecttheGM29intoyour application

as described later in this guide.

Highlights

• Dual band, EGSM 900/1800MHz,
GSM/GPRS serial modem

• Flexible plug-and-play device

• Data: GPRS, HSCSD, CSD, SMS

• Voice: full rate, enhancedfull rate, half rate

• SMS: mobile-originated, mobile­terminated, cell broadcast

• Fax: Group 3, Classes 1 & 2

• 5V to 32V d.c. input

• Standard connectors

• R&TTE type approved

View of Left Side

LED

Antenna
connector

RS232
connector

View of Right Side

Access to SIM card

Power

connector

Handset

connector

4 Introduction

Fixing hole

Installation

Safety and Installation Information

[Needs to be checked and re-written]

• TheTerminal should be installed and setup
only by qualified personnel.

• Connect a fast 1.25A fuse to the incoming
line for the positive supply voltage to
protectthe Terminal.

• If a power supply unit is used to supply the
GM29 modem, it must meet the demands
placed on SELV circuits in accordance
with EN60950. When using batteries and
accumulators,adhere to the relevant
regulations.

• The maximum permissible connection
length between the GM29 Modem and the
supply source is 3m.

• Your supplier will be pleased to provide
you with a detailed technical description
and technical support for the GM29
Modem.

Securing the Modem

NOTE! Before securing t he modem take into

accountthe amountof additionalspace
requiredfor the mating connectorsand
cables that will be used in the
application.

NOTE! Where access is restricted, it may be

easierto connect all the cables to the
modem prior to securing it in the
application.

Securely attach the GM29 modem to t he host
application using two 3mm diameter pan-head
screws of appropriate length as shown below.

CAUTION! Do not over tighten the fixings

screws. Excessive torque applied
to the screws can crack the plastic
case.

Fixing Scr ews

Installation 5

Electrical Connections

All electrical connections to the GM29 are
protectedin compliance with the standard air
(4 kV) and contact (8 kV) discharge ESD tests,
of EN 301 489-1.

The modem uses the following industry
standardconnectors:

• RJ11 6-way (power connector)

• RJ9 4-way (audio connector)

• SIM card reader

• FME male coaxial jack (antenna
connector)

• Sub-D socket, 9 pin (RS232 serialport)

Power Connector

An RJ11 6-way connector, as shown and
describedbelow, serves as a means of
supplying and controlling d.c. power to the
modem.

Connectpositivepower to VCC (pin 1) and the
ground or negative to GND (pin 6). VCC and
GND are reverse polarity and overvoltage
protected

NOTE! Application of the supply voltage

VCC, does not automaticallyswitch
on the modem.

Switch on is usually achieved by use of the
TO_IN signal, which can be supplied by the
host application. Alternatively t he modem can
be switched on at the same time that power is
appliedbyhard-wiringTO_INtoVCC.Refer
to “Switching On the Modem” on page 10 for
information on switch on methods.

Similarlythe host application can be designed
toswitchofftheGM29or performahardreboot
of the modem's software by use of the HR_IN
signal.Refer to “Switching Off the Modem”
and “Resetting the Modem” on page 10 for
additional information.

TO_IN and HR_IN are referenced to GND.

RJ11 Power Connector

654321

1 VCC
2 n/c

Signal Description

VCC Positive power i nput

TO_IN Active high control line used for

HR_IN Activehigh control line u sed to

GND Negative power (ground) input

3 HR_IN
4 TO_IN

(5V to 32V d.c. at 1.5A

switchingonthemodem
(–0.5V to 32V;
V

>5V,VIL<2V)

IH

switchoff or reset the modem
(–0.5V to 32V;
V

>5V,VIL<2V)

IH

and return path for TO_IN and
HR_IN

5 n/c
6GND

max

)

6 Electrical Connection s

Audio Connector

A 4-way RJ9 connector,as shown below,
allows a telephone handset to be plugged into
the modem, giving access to the microphone
andearpiecesignals.Theconnectormayalso be
usedto drive other analogueaudio sub-systems
or devices.

TheGM29isconfiguredtoworkwitharange
of handsets.

CAUTION! Not all handsets use the pin-outs

shown below for microphone and
earpiece.

If necessary, changes can be made to the
characteristics of the audio interfaceby sending
the modem appropriate AT commands.

RJ9 Handset Connector

Antenn a C on nect or

Connect a GSM antenna to this port. Single
(900 or 1800 M Hz) or dual band
(900/1800MHz) antennas may be used. The
modem is fitted with a 50Ω,FME male coaxial
jack.

FME Connector

RF Signal

GND

Signal Description

RF RF input/output
GND Ground connection

4321

1 MICN
2 BEARN

Signal Description

MICN Microphone negative input
BEARN Earpiece negative output
BEARP Earpiece positive output
MICP Microphonepositiveinput

3 BEARP
4 MICP

Electrical C onnections 7

RS232 Serial Port

The modem supports a standard RS232 serial
interface (EIA/TIA 574) via its 9 pin Sub-D
connector, shown below.

Link the GM29 to a microcontroller or
computerin the host application,via the RS232
serial port. AT commands are used by the
host-application software to communicate with
the GM29.

Sub-D 9-pin Connector

9

76

8

54321

1 DCD
2RD
3TD

Signal Voltage

levels

DCD >+4V

<–4V

RD > +4V

<–4V

TD >2V

<0.8V

DTR > 2V

<0.8V
GND 0V groundconnection
DSR > +4V

<–4V
RTS >2V

<0.8V
CTS > +4V

<–4V
RI >+4V

<–4V

4 DTR
5GND
6 DSR

Description

Data carrierdetect

Received data

Transmitted data

Data terminal ready

Data set ready

Requestto send

Clear to send

Ring indicator

7RTS
8 CTS
9RI

8 Electrical Connection s

SIM Car d Reader

TheGM29isfittedwithaSIMcardreaderin
which 3V and 5 V SIM cards will operate. The
type of card fitted is automatically detected by
the modem.

Tooperate themodema SIM cardmustbe fitted
as follows:

1. Disconnect power to the GM29;

2. Remove the cover panel by applying light downwardpressure and sliding outwards as shown below;

3. Applyinglightpressure, slide the SIM card holder to the “OPEN” position as shown below;

5. Orientate the SIM card and slide into t he holder as shown below;

6. Close the SIM holder and slide into the “LOCK” positon;

7. Refit the cover panel.

4. Carefully raise the SIM card holder until it is in the vertical position as shown below;

To replaceor remove a SIM card, follow the
same procedure as described above except
remove or exchange the card at step 5.

Electrical C onnections 9

Operation

Beforethe GM29 canbe operatedthe following
conditionsmust apply:

• SIM card inserted(with the modem
unpowered);

• antennaconnected;

• RS232 port connected to the application
computer;

• power applied.

Operation is not dependent on a handset being
fitted. The type of application will dictate
whether a handset is necessary.

SwitchingOntheModem

There are two ways to switch on the modem,
once power is applied.

• either assert TO_IN high for > 0.2s;

• or activate the RS232 control line DTR,
high for > 0.2s.

The modemis fully operationalafter 4 seconds.
Logging onto a network may take longer than
this and is outside the control of the modem.

The modem can be configured to startup at the
time power is applied by permanently tying
power connector signals TO_IN (pin 4) and
VCC (pin 1) together.In thiscaseDTR must be
used to switch the modem on again after it has
been switched off or reset, while power is still
applied.

Switching Off the Modem

Therearetwowaystoswitchoffthemodemas
describedbelow:

• either use the appropriate AT command;

• orassertHR_INhighfor1-2seconds.A
delayofupto10sisexperiencedasthe
modem logs off t he network.

Resetting th e M odem

A full system reset,independentof thestatusof
thesoftware,maybeappliedtothemodemas
follows:

• assert HR_IN high for > 3.5s.

Operating States/LED

The GM29 has a green LED, as shown below,
used to indicate various operatingstates.These
states are described in the following table.

LED

Operating state LED

After switching on the modem On after 4s
Switchoff or power removed Off
Standbyor talk Flashing
Modemonwithoneofthefol-

lowing conditions:
No network, network search,
no SIM card, no PIN entered

On

10 Op eration

Accessor ies

A range of type approved and recommended
accessoriesforthe GM29 are availablethrough
Sony Ericsson's distribution channels.

AT Commands

The GM29 is controlled and programmedby
means of AT commands. For a complete list
and detailed descriptionof each command
please refer to the Integrator’s Manualon the
CD accompanying this product.

Type Approval

Theintegratednature oftheGM29shouldmake
type approval a minimal process.The type
approvalprocess may differfrom countryto
countrybut in general no further type approval
oftheGM29isneededwhenusedwith
Sony Ericsson approved accessories and where
the cable lengths are restricted to those shown
in the table below.

Cable Maximum length (m)

Power cable 3
Handset cable 3
Antennacable 3
RS232 cable 3

Further type approval will be required if: ??

Software Updates

Itis possibleand sometimesnecessaryto update
the embedded software. Updates must be
carriedout by a Sony Ericsson approved
technician.

Please contact your supplier for details or
contactSony Ericsson directly (see “Service
and Support” on page 11).

Certification

Tested and certified according to:
Directive 1999/5/EC

EMC: EN 301 489-1
EMC: EN 301 489-7
Safety: EN 60950
GSM 3GPPTS 51.010-1

Trouble shoo ting

Do not attempt to repair a damaged modem.
Return it to your supplier for replacement or
repair.

Modem Not Working

One of the following situations probably
applies:

1. Power is not connected. Check the power
source and connection to t he RJ11 connec­tor on the GM29.

2. Power is connected but a switch on signal
has not been applied, see “Switching On
the Modem” on page 10.

3. The modem is damaged.

Software Crashed

Perform a hard reset (see “Resetting the
Modem” on page 10).

If this fails, the modem is probably damaged.

No Communication, Modem Switched On

Check the RS232 serial port connections and
cable.

Check the application software.

Servi ce an d Supp ort

To contact customer support please use the
details below:

Customer Support
Sony Ericsson Mobile Communications
Maplewood Building

Accessories 11

Chineham Business Park
Basingstoke
RG24 8YB

E-mail: [e-mail]
or
[e-mail]

Information about Sony Ericsson and its
products is available on t he following web site:

http://www.sonyericsson.com/M2M

12 Service and Support

Service and Support 13

Technical Data

Data Features

CSD Up to 9.6kbps, transparent and non-transparent
HSCSD (2+1) Up to 19.2kbps
GPRS Class B (4+1)

- P channels

- Coding schemes CS1 to CS4
GSM 07.10 multiplexing protocol

85.6kbps (subject to network support and
terminal location)

Short Message Service Features

SMS Text and PDU

Point to point (MT/MO)
Cell broadcast
concatenationof up to 6 SMS

Voice F eatures

Full Rate, Enhanced Full Rate and Hlf Rate (FR/
EFR/HR)

Echo Cancellation and Noise Reduction
Dual Tone Multi Frequency (DTMF

Fax Features

Group 3
Class 1 and 2

Data Storage

SMS storage capacity 40 in ME

In addition,the unit can handle as many SMS as
the SIM can store

Phone book capacity 100

14 Technical Data

Power Supply

Supply voltage range 5-32Vd.c.at1.5A

max

Average Po wer Co nsumption

Idle Mode Transmit/Operation

GSM 900 Voice/CSD <15mA <250 mA (<2A peak)

Data(GPRS 4+1) <1 5mA <350 mA (<2A peak)

GSM 1800

Voice/CSD <15mA <250mA (<1.75A peak)
Data (GPRS 4+1) <15mA <350mA (<1.75A peak)

NOTE! The power consumption during transmissionis measured at maximum

transmitted power.

Radio Specifications

Frequency range GM29:EGSM 900MHz and 1800MHz (dual band)
Maximum RF output power 2W (900MHz) and 1W (1800MHz)
Antennaimpedance 50Ω
Static sensitivity Better than –102dBm

Technical Data 15

Audio Specifi cations

Parameter Limit
Output level(differential) ≥4.0V

Output level
(dynamic load = 32Ω)

Distortion at 1kHz and maximum output level ≤5%
Offset, BEARP to BEARN ±30mV
Ear-piece mute-swit ch attenuation ≥40dB

Ear piece model Impedance Tolerance
Dynamic ear piece [32Ω + 800µH] // 100pF ±20%
Dynamicear piece [150Ω +800µH]//100pF ±20%
Piezo ear piece 1kΩ +60nF ±20%

≥2.8V

SIM Card Reader

Voltage type Support for 3 V and 5 V SIM cards

Electrical Connectors and LED

Plug-in power supply connector RJ11 6 -way
Handset audio connector RJ9 4-way

pp

pp

Antennaconnector FME male
RS232serial port Sub-Dsocket,9 pin
LED Green

Mechanical Specification

Length 77.4mm
Width 66.4mm
Height 26.2mm
Weight <130g

16 Technical Data

Environmental sp ecifications

Operating temperature range –25°C to +55°C
Storage temperature range –40°C to +85°C
Relative humidity 5 - 95%, non-condensing
Stationary vibration,

sinusoidal

Stationary vibration,random Acceleration spectral density (m²/s²):

Non-stationary vibration,
including shock

Bump Acceleration: 250m/s²
Free fall transportation 1.2m
Rolling pitching

transportation
Static load 10kPa
Low air pressure/highair

pressure

Displacement: 7.5 mm
Acceleration amplitude: 20m/s² and 40m/s²
Frequency range: 2-8Hz, 8-200Hz, 200-500Hz

0.96, 2.88, 0.96
Frequency range:
5-10Hz, 10-200Hz, 200-500Hz, 60min/axis

Shock response spectrumI, peak acceleration:
3 shocksin each axis and direction;300m/s², 11ms.

Shock response spectrumII, peak acceleration:
3 shocksin each axisand direction; 1000 m/s², 6ms.

Angle:±35degrees;period:8s

70kPa/106kPa

Certification

Directive
1999/5/EC

EMC: EN 301 489-1
EMC: EN 301 489-7

TestedaccordingtoGCF-CC

Safety: EN 60950
GSM 3GPP TS 51.010-1

Technical Data 17