GM 47/GM 48
Technical Description
CE
The product described in this manual conforms to the Radio and Teleterminals directive 1999/5/EC with requirements covering EMC directive 89/336/EEC and Low Voltage directive 73/23/EEC.
SAR statement: This product is intended to be used with the antenna or other radiating element 20 cm far away of the any part of the human body.
The information contained in this document is the proprietary information of Sony Ericsson Mobile Communications. 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 prior written consent of Sony Ericsson Mobile Communications, is strictly prohibited.
Further, no portion of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, without the prior written consent of Sony Ericsson Mobile Communications, the copyright holder.
Second edition (February 2002)
Sony Ericsson Mobile Communications. publishes this manual without making any warranty as to the content contained herein. Further Sony Ericsson Mobile Communications. reserves the right to make modifications, additions and deletions to this manual due to typographical errors, inaccurate information, or improvements to programs and/or equipment at any time and without notice. Such changes will, nevertheless be incorporated into new editions of this manual.
All rights reserved.
© Sony Ericsson Mobile Communications., 2002
Publication number:
Printed in UK
Trademarks
AIX is a trademark owned by International Business Machines Corporation
Contents
1 |
INTRODUCTION ........................................................................................................... |
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1.1 |
OVERVIEW ............................................................................................................... |
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1.2 |
FEATURES................................................................................................................ |
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1.2.1 |
Type of Mobile Station ...................................................................................... |
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1.2.2 |
SMS ................................................................................................................ |
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1.2.3 |
Voice calls ....................................................................................................... |
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1.2.4 |
Data ................................................................................................................. |
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1.2.5 |
SIM Card .......................................................................................................... |
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1.2.6 |
Power consumption .......................................................................................... |
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1.2.7 |
Other features .................................................................................................. |
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1.2.8 |
Development Kit ............................................................................................... |
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1.3 |
PRECAUTIONS........................................................................................................... |
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1.4 |
ABBREVIATIONS ........................................................................................................ |
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2 |
MECHANICAL DESCRIPTION..................................................................................... |
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2.1 |
INTERFACE DESCRIPTION.......................................................................................... |
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2.2 |
PHYSICAL DIMENSIONS............................................................................................. |
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SYSTEM CONNECTOR INTERFACE........................................................................... |
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3.1 |
OVERVIEW ............................................................................................................. |
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3.2 |
GENERAL ELECTRICAL AND LOGICAL CHARACTERISTICS................................................ |
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3.2.1 |
General Protection Requirements .................................................................... |
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3.3 |
GROUNDS .............................................................................................................. |
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3.3.1 |
The Analogue Ground ..................................................................................... |
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3.3.2 |
The Digital Ground (DGND) ............................................................................. |
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3.4 |
REGULATED POWER S UPPLY .................................................................................... |
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3.4.1 |
Power Supply (VCC) ....................................................................................... |
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3.5 |
ON/OFF AND EXTERNAL POWER S IGNALS.................................................................. |
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3.5.1 |
Module ON/OFF ............................................................................................. |
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3.5.2 |
External 2.75 V (VIO) ...................................................................................... |
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3.6 |
ANALOGUE A UDIO ................................................................................................... |
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3.6.1 |
Audio To Mobile Station (ATMS) ...................................................................... |
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3.6.2 |
Audio From Mobile Station (AFMS) .................................................................. |
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3.7 |
MICROPHONE S IGNALS ............................................................................................ |
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3.8 |
SPEAKER S IGNALS .................................................................................................. |
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3.9 |
DIGITAL AUDIO ........................................................................................................ |
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3.10 |
SERIAL DATA.......................................................................................................... |
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3.10.1 |
UART 1 (RS232) - RD, TD, RTS, CTS, DTR, DCD and RI ................................. |
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3.10.2 |
Serial Data Signals - RD, TD ........................................................................... |
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3.10.3 |
Control Signals - RTS, CTS, DTR, DCD, RI ...................................................... |
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3.10.4 |
UART 2 - TD2, RD2 ........................................................................................ |
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3.10.5 |
UART 3 - TD3, RD3 ........................................................................................ |
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3.11 |
SIM CARD RELATED SIGNALS.................................................................................... |
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3.11.1 |
SIM Detection – SIM Presence ........................................................................ |
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3.12 |
SERVICE/PROGRAMMING .......................................................................................... |
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3.13 |
BUZZER ................................................................................................................. |
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3.14 |
LED |
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3.15 |
TX_ON ...............................................................................- BURST TRANSMISSION |
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3.16 |
TIMESTAMP ............................................................................................................ |
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3.17 |
REAL ...................................................................................................TIME CLOCK |
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4 |
ANTENNA ............................................................................................CONNECTOR |
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5 |
AT COMMAND SUMMARY.......................................................................................... |
36 |
6 |
TECHNICAL DATA ..................................................................................................... |
39 |
1 Introduction
1.1Overview
The GM47/48 belong to a new generation of Sony Ericsson Mobile Communications GSM modules. This document describes the main characteristics and functionality of the GM 47/48, two dual band products for 900/ 1800 MHz and 850/1900 MHz GSM bands respectively.
They are intended to be used in both machine-to-machine applications and man-to-machine applications. The module serves its purpose when there is a need for sending and receiving data (by SMS, CSD, HSCSD, or GPRS), as well as making voice calls over the GSM network.
GM47/48 are business-to-business products. It is intended to be sold to manufacturers, system integrators, applications developersdeveloping solutions with wireless communication. The module is intended to be integrated by the system integrator within an application. The module and the external application will form a system for wireless communication.
A typical system is one where a micro controller in an external application communicates with the module over its serial interface. The micro controller will control the module, via the supported set of AT commands. It is assumed that the system integrators have a high technical knowledge and the ability to integrate the module into a system. For the GM47/48 modules some interesting applications are the following:
∙Fleet and Asset Management
∙Vending Machines
∙Security and Alarm
∙Other telemetry applications
1.2Features
The module performs a set of telecom services (TS) according to GSM standard phase 2+, ETSI and ITU-T. The functions of the module are implemented by issuing AT commands over the serial interface. Supported AT commands are listed in section 5, these are defined further in GSM 7.05.
1.2.1 Type of Mobile Station
The GM 4X family are normal dual band type of MS with the following characteristics.
GM 47 |
GSM 900 |
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E-GSM 900 |
GSM 1800 |
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Frequency Range |
TX: 890-915 |
TX: 880-890 |
TX: 1710-1785 |
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(MHz) |
RX: 935-960 |
RX: 925-935 |
RX: 1805-1880 |
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Channel spacing |
200 kHz |
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200 kHz |
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Number of channels |
173 Carriers *8 (TDMA) |
374 Carriers *8 (TDMA) |
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GSM: Channels 1 to 124 |
DCS: Channels 512 to 885 |
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E-GSM: Channels 975 to 1023 |
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Modulation |
GMSK |
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GMSK |
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TX Phase Accuracy |
< 5º RMS Phase error (burst) |
< 5º RMS Phase error (burst) |
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Duplex spacing |
45 MHz |
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95 MHz |
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Receiver sensitivity at |
< - 102 dBm |
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< - 102 dBm |
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antenna connector |
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Transmitter output |
Class 4 |
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Class 1 |
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power at antenna |
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connector |
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2W (33 dBm) |
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1W (30 dBm) |
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Automatic hand-over between GSM 900 and GSM 1800 |
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GM 48 |
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GSM 850 |
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GSM 1900 |
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Frequency Range (MHz) |
TX: 824-849 |
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TX: 1850-1910 |
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RX: 869-894 |
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RX: 1930-1990 |
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Channel spacing |
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200 kHz |
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200 kHz |
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Number of channels |
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123 carriers *8 (TDMA) |
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298 Carriers *8 (TDMA) |
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GSM: Channels 128 to 251 |
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PCS: Channels 512 to 810 |
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Modulation |
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GMSK |
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GMSK |
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TX Phase Accuracy |
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< 5º RMS Phase error (burst) |
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< 5º RMS Phase error (burst) |
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Duplex spacing |
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45 MHz |
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80 MHz |
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Receiver sensitivity at antenna |
< - 102 dBm |
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< - 102 dBm |
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connector |
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Transmitter output power at |
Class 5 |
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Class 1 |
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antenna connector |
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0.8 W (29 dBm) |
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1W (30 dBm) |
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Automatic hand-over between GSM 850 and GSM 1900
1.2.2 SMS
The module supports the following SMS services:
∙Sending: MO, both PDU and Text mode supported.
∙Receiving: MT, both PDU and Text mode supported.
∙CBM is a service, in which a message is sent to all subscribers located in one or more specific cell(s) in the GSM network, for example, cell location information.
∙SMS STATUS REPORT according to GSM 03.40.
∙SMS COMMAND according to GSM 03.40.
The maximum length of an SMS message is 160 characters when using 7-bit encoding. For 8-bit data, the maximum length is 140 bytes.
The module does support upto 6 concatenated messages to extend this function.
1.2.3Voice calls
The GM47/48 offers the capability of MO and MT voice calls, as well as supporting emergency calls. In addition to this multiparty, call waiting and call deflection features are available. Some of these features are operator specific.
The module offers normal analogue input/output lines, analogue audio input/ output lines in differential modes, and digital audio interface, with the possibility of accessing internal points within the digital audio lines. Moreover, the GM 47/GM48 has embedded echo canceller and noise suppresser, which provides high quality audio.
The module supports both HR, FR and EFR voice coding, provided that EFR is available in the network.
1.2.4 Data
The module supports the following data protocols:
∙General Packet Radio Service (GPRS). The modules are Class B Terminals, which provides simultaneous activation and attach of GPRS and GSM services. The GM47/48 modules are GPRS 3+1 devices, which are capable of transmitting in one timeslot per frame (uplink), and receiving in a maximum of three timeslots per frame (downlink).
∙Circuit Switched Data (CSD). GM47/48 modules are capable to stablish a circuit switch data communication at 9.6 kbps, V42bis compression is not supported.
∙High Speed Circuit Switched Data (HSCSD). GM47/48 support HSCSD communication, with one timeslot per frame capacity in the uplink and two timeslots per frame capacity in the downlink (2+1).
1.2.5SIM Card
The module supports the connection of an external SIM Card with 3V and 5 V technology, via the 60-pin system connector. The module does not have an internal SIM holder.
1.2.6 Power consumption
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Stand-by1 |
Transmit/Operation |
GSM 850 & 900 MHz |
20 mA |
275 mA (2A peak) |
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GSM 1800 & 1900 MHz |
20 mA |
250 mA (1.75A peak) |
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Note ! The power consumption during transmission is measured at maximum transmit power.
1.2.7Other features
∙Internet Ready Module
∙07.10 Multiplexing
∙Bluetooth interoperability
∙GPS interoperability
∙SIM application toolkit, class 2 release 96 compliant
1.2.8Development Kit
Sony Ericsson Mobile Communications provides the opportunity to test the module in a limited scale, before ordering a large quantity. With the development kit you can quickly get started with the module. The kit includes necessary accessories (software and hardware) that you will need for your test purposes. It also includes the following:
∙GSM module GM 47 or GM 48
∙Integrator’s Manual
∙Warranty Sheet
1 This figures are tentative data, subject to change.
The Integrator’s Manual provides you with all the information you need to be able to integrate the module with your application.
1.3Precautions
The GM47/48 should be handled like any mobile station. In the Integrators’ Manual you will find more information about safety and product care. In the Technical Data chapter in this document the environmental and electrical limits are specified. Never exceed these limits to ensure the module is not damaged.
1.4Abbreviations
Abbreviation |
Explanation |
BT |
Bluetooth |
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CBS |
Cell Broadcast Service |
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CBM |
Cell Broadcast Messaging |
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CSD |
Circuit Switch Data |
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DCE |
Data Circuit Terminating Equipment |
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DTE |
Data Terminal Equipment |
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DTMF |
Dual Tone Multi Frequency |
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EFR |
Enhanced Full Rate codec |
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EMC |
Electro-Magnetic Compatibility |
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ETSI |
European Telecommunications Standards Institute |
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FR |
Full Rate codec |
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GPRS |
General Packet Radio Service |
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GPS |
Global Positioning System |
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GSM |
Global System for Mobile Comunication |
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HR |
Half Rate codec |
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HSCSD |
High Speed Circuit Switched Data |
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ITU-T |
International Telecommunication Union – Telecommunications |
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Standardisation Sector |
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ME |
Mobile Equipment |
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MO |
Mobile Originated |
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MS |
Mobile Station |
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MT |
Mobile Terminated |
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PCM |
Pulse Code Modulation |
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PDU |
Protocol Data Unit |
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RLP |
Radio Link Protocol |
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RF |
Radio Frequency |
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RTC |
Real Time Clock |
SDP |
Service Discovery Protocol |
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SMS |
Short Message Service |
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SIM |
Subscriber Identity Module |
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TBD |
To Be Defined |
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2 Mechanical Description
2.1Interface Description
The picture below presents the conceptual mechanical design of the GM 47/48. The GM 47/48 are protected with AISI 304 Stainless Steel covers suitable to fulfil the environmental and EMC requirements. Dimensions, the position of the different connectors and mounting holes are shown in figure 2.2.
Figure 2.1 GM 47/48, view from the underside
2.2Physical Dimensions
Figure 2.2 Physical dimensions of GM 47/48
The measures are given in millimetre’s. See also chapter 6, Technical
Data.