Sony 6220501-BV Users Manual
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
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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
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GM47/48 Technical description
Contents
1 INTRODUCTION ...........................................................................................................5
1.1 OVERVIEW ...............................................................................................................5
1.2 FEATURES................................................................................................................6
1.2.1 Type of Mobile Station ......................................................................................6
1.2.2 SMS ................................................................................................................7
1.2.3 Voice calls .......................................................................................................7
1.2.4 Data.................................................................................................................7
1.2.5 SIM Card..........................................................................................................8
1.2.6 Power consumption ..........................................................................................8
1.2.7 Other features ..................................................................................................8
1.2.8 Development Kit ...............................................................................................8
1.3 PRECAUTIONS...........................................................................................................9
1.4 ABBREVIATIONS ........................................................................................................9
2 MECHANICAL DESCRIPTION..................................................................................... 11
2.1 INTERFACE DESCRIPTION ..........................................................................................11
2.2 PHYSICAL DIMENSIONS............................................................................................. 12
3 SYSTEM CONNECTOR INTERFACE........................................................................... 13
3.1 OVERVIEW ............................................................................................................. 13
3.2 GENERAL ELECTRICAL AND LOGICAL CHARACTERISTICS................................................ 16
3.2.1 General Protection Requirements .................................................................... 16
3.3 GROUNDS .............................................................................................................. 16
3.3.1 The Analogue Ground .....................................................................................17
3.3.2 The Digital Ground (DGND)............................................................................. 17
3.4 REGULATED POWER S UPPLY ....................................................................................17
3.4.1 Power Supply (VCC) .......................................................................................18
3.5 ON/OFF AND EXTERNAL POWER S IGNALS..................................................................18
3.5.1 Module ON/OFF............................................................................................. 18
3.5.2 External 2.75 V (VIO) ......................................................................................19
3.6 ANALOGUE A UDIO ...................................................................................................19
3.6.1 Audio To Mobile Station (ATMS)...................................................................... 20
3.6.2 Audio From Mobile Station (AFMS).................................................................. 22
3.7 MICROPHONE S IGNALS ............................................................................................22
3.8 SPEAKER S IGNALS ..................................................................................................23
3.9 DIGITAL AUDIO........................................................................................................ 23
3.10 SERIAL DATA.......................................................................................................... 24
3.10.1 UART 1 (RS232) - RD, TD, RTS, CTS, DTR, DCD and RI .................................26
3.10.2 Serial Data Signals - RD, TD........................................................................... 26
3.10.3 Control Signals - RTS, CTS, DTR, DCD, RI...................................................... 27
3.10.4 UART 2 - TD2, RD2........................................................................................ 29
3.10.5 UART 3 - TD3, RD3........................................................................................ 29
3.11 SIM CARD RELATED SIGNALS.................................................................................... 30
3.11.1 SIM Detection – SIM Presence ........................................................................31
3.12 SERVICE /PROGRAMMING.......................................................................................... 31
3.13 BUZZER ................................................................................................................. 32
3.14 LED...................................................................................................................... 32
3.15 TX_ON - BURST TRANSMISSION............................................................................... 33
3.16 TIMESTAMP............................................................................................................ 33
3.17 REAL TIME CLOCK................................................................................................... 34
4 ANTENNA CONNECTOR ............................................................................................35
GM47/48 Technical description
5 AT COMMAND SUMMARY.......................................................................................... 36
6 TECHNICAL DATA..................................................................................................... 39
GM47/48 Technical description
1 Introduction
1.1 Overview
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
GM47/48 Technical description
1.2 Features
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 E-GSM 900 GSM 1800
Frequency Range
(MHz)
Channel spacing 200 kHz 200 kHz
Number of channels 173 Carriers *8 (TDMA)
Modulation GMSK GMSK
TX Phase Accuracy < 5º RMS Phase error (burst) < 5º RMS Phase error (burst)
Duplex spacing 45 MHz 95 MHz
Receiver sensitivity at
antenna connector
Transmitter output
power at antenna
connector
Automatic hand-over between GSM 900 and GSM 1800
TX: 890-915
RX: 935-960
GSM: Channels 1 to 124
E-GSM: Channels 975 to 1023
< - 102 dBm < - 102 dBm
Class 4
2W (33 dBm)
TX: 880-890
RX: 925-935
TX: 1710-1785
RX: 1805-1880
374 Carriers *8 (TDMA)
DCS: Channels 512 to 885
Class 1
1W (30 dBm)
GM 48 GSM 850 GSM 1900
Frequency Range (MHz) TX: 824-849
Channel spacing 200 kHz 200 kHz
Number of channels 123 carriers *8 (TDMA)
Modulation GMSK GMSK
TX Phase Accuracy < 5º RMS Phase error (burst) < 5º RMS Phase error (burst)
Duplex spacing 45 MHz 80 MHz
Receiver sensitivity at antenna
connector
Transmitter output power at
antenna connector
TX: 1850-1910
RX: 869-894
GSM: Channels 128 to 251
< - 102 dBm < - 102 dBm
Class 5
0.8 W (29 dBm)
RX: 1930-1990
298 Carriers *8 (TDMA)
PCS: Channels 512 to 810
Class 1
1W (30 dBm)
GM47/48 Technical description
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.
1.2.3 Voice 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.
1.2.4 Data
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.
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.
GM47/48 Technical description
• 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).
1.2.5 SIM 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
Stand-by
GSM 850 & 900 MHz 20 mA 275 mA (2A peak)
GSM 1800 & 1900 MHz 20 mA 250 mA (1.75A peak)
1
Transmit/Operation
Note! The power consumption during transmission is measured at
maximum transmit power.
1.2.7 Other features
• Internet Ready Module
• 07.10 Multiplexing
• Bluetooth interoperability
• GPS interoperability
• SIM application toolkit, class 2 release 96 compliant
1.2.8 Development 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:
1 This figures are tentative data, subject to change.
• GSM module GM 47 or GM 48
• Integrator’s Manual
• Warranty Sheet
GM47/48 Technical description
The Integrator’s Manual provides you with all the information you
need to be able to integrate the module with your application.
1.3 Precautions
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.
1.4 Abbreviations
Abbreviation Explanation
BT Bluetooth
CBS Cell Broadcast Service
CBM Cell Broadcast Messaging
CSD Circuit Switch Data
DCE Data Circuit Terminating Equipment
DTE Data Terminal Equipment
DTMF Dual Tone Multi Frequency
EFR Enhanced Full Rate codec
EMC Electro-Magnetic Compatibility
ETSI European Telecommunications Standards Institute
FR Full Rate codec
GPRS General Packet Radio Service
GPS Global Positioning System
GSM Global System for Mobile Comunication
HR Half Rate codec
HSCSD High Speed Circuit Switched Data
ITU-T International Telecommunication Union – Telecommunications
Standardisation Sector
ME Mobile Equipment
MO Mobile Originated
MS Mobile Station
MT Mobile Terminated
PCM Pulse Code Modulation
PDU Protocol Data Unit
RLP Radio Link Protocol
RF Radio Frequency
RTC Real Time Clock
GM47/48 Technical description
SDP Service Discovery Protocol
SMS Short Message Service
SIM Subscriber Identity Module
TBD To Be Defined
GM47/48 Technical description
2 Mechanical Description
2.1 Interface 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
GM47/48 Technical description
2.2 Physical Dimensions
Figure 2.2 Physical dimensions of GM 47/48
The measures are given in millimetre’s. See also chapter 6, Technical
Data.
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