Multitech SocketModem MTSMC-G3 Application guide

SocketModem® Cell GPRS
MTSMC-G3 Device Guide

COPYRIGHT AND TECHNICAL SUPPORT
SocketModem Cell GPRS MTSMC-G3 Device Guide
2
SocketModem Cell GPRS G3 Device Guide
S000543, Version A
MTSMC-G3
Copyright
This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech Systems, Inc. All rights reserved.
Copyright © 2013 by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and specifically disclaim any implied warranties of
merchantability or fitness for any particular purpose. Furthermore, Multi-Tech Systems, Inc. reserves the right to revise this publication and to make
changes from time to time in the content hereof without obligation of Multi-Tech Systems, Inc. to notify any person or organization of such revisions or
changes.
Trademarks
SocketModem and the Multi-Tech logo are registered trademarks of Multi-Tech Systems, Inc. Microsoftand Windowsare registered trademarks of
Microsoft Corporation in the United States and other countries. All other brand and product names are trademarks or registered trademarks of their
respective companies.
Contacting Multi-Tech
Knowledge Base
The Knowledge Base provides immediate access to support information and resolutions for all Multi-Tech products. Visit
http://www.multitech.com/kb.go.
Support Portal
To create an account and submit a support case directly to our technical support team, visit: https://support.multitech.com.
Support
Business Hours: M-F, 9am to 5pm CT
Country
By Email
By Phone
Europe, Middle East, Africa:
[e-mail]
+(44) 118 959 7774
U.S., Canada, all others:
[e-mail]
[phone] or [phone]
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Warranty
To read the warranty statement for your product, please visit: http://www.multitech.com/warranty.go.

CONTENTS
3
SocketModem Cell GPRS MTSMC-G3 Device Guide
Contents
Device Overview ........................................................................................................................................................4
Description .......................................................................................................................................................................... 4
Product Build Options ......................................................................................................................................................... 4
Documentation ................................................................................................................................................................... 4
Mechanical Drawings .................................................................................................................................................5
MTSMC-G3 Builds ............................................................................................................................................................... 5
Specifications.............................................................................................................................................................6
Technical Specifications ...................................................................................................................................................... 6
Mounting Hardware............................................................................................................................................................ 7
Recommended Parts.........................................................................................................................................................................7
Device Reset........................................................................................................................................................................ 7
Reset GPRS ........................................................................................................................................................................................7
RS-232 Signal DC Electrical Characteristics ......................................................................................................................... 8
Absolute Maximum Rating................................................................................................................................................................8
Electrical Characteristics Other Pins ................................................................................................................................... 8
Pinout Specifications........................................................................................................................................................... 9
Power Measurements......................................................................................................................................................... 9
EMC, Safety, and R&TTE Directive Compliance..........................................................................................................10
Application Notes ....................................................................................................................................................11
LED Interface ..................................................................................................................................................................... 11
LED 2 –Link Status .......................................................................................................................................................................... 11
RF Performances ............................................................................................................................................................... 11
Receiver Features............................................................................................................................................................................ 11
Transmitter Features.......................................................................................................................................................................11
RF Connection and Antenna ...........................................................................................................................................................11
Changing the Quad Band .................................................................................................................................................. 12
Changing the GSM Band .................................................................................................................................................................12

CHAPTER 1 –DEVICE OVERVIEW
SocketModem Cell GPRS MTSMC-G3 Device Guide
4
Device Overview
Description
SocketModem Cell GPRS models are complete ready-to-integrate communication devices that offer standards-
based quad-band GSM/GPRS Class 10 performance. These quick-to-market communications devices allow
developers to add wireless communication to products with a minimum of development time and expense. It uses
industry-standard open interfaces and Multi-Tech’s Universal Socket design.
Product Build Options
Product
Description
Region
MTSMC-G3
2G GSM/GPRS Class 10 Quad-band SocketModem
Europe
Developer Kit
MTSMI-UDK
Universal Developer Kit
Global
Notes:
These units ship without network activation. To connect them to the network, you need a cellular account.
For information, refer to Account Activation for Cellular Devices in the Universal Socket Developer Guide.
All builds can be ordered individually or in 50-packs.
The complete product code may end in .Rx, for example MTSMC-G3.Rx, where R is revision and x is the
revision number.
Documentation
The following documentation is available by email to [email protected]m or by using the Developer Guide
Request Form on the multitech.com website.
Device Guides –This document. Provides model-specific specifications and developer information.
Universal Socket Developer Guide –Provides an overview, safety and regulatory information, design
considerations, schematics, and general device information.
AT Command Guide –Use the following AT Command Guides with GPRS devices:
S000545 for G3 Modems

CHAPTER 2 –MECHANICAL DRAWINGS
5
SocketModem Cell GPRS MTSMC-G3 Device Guide
Mechanical Drawings
MTSMC-G3 Builds

CHAPTER 3 –SPECIFICATIONS
SocketModem Cell GPRS MTSMC-G3 Device Guide
6
Specifications
Technical Specifications
Category
Description
General
Standards
GPRS Class 10
Frequency Bands
Quad-band EGSM 850/900/1800/1900 MHz
Speed, Format
Serial/Data Speed
Serial interface supports DTE speeds up to 921.6Kbps
Packet data up to 85.6Kbps
Data Format
10 bit serial asynchronous
GPRS Data:
Class 10
Mobile Station Class B
Coding Scheme 1 to 4
PBCCH Support
GERAN Feature Package 1 support
Physical Description
Weight
1 oz. (28g)
Dimensions
3.15" x 1.375" (80.010 mm x 34.93 mm)
Connectors
Antenna Connector
Surface mount UFL one cellular
SIM Holder
Standard 1.8V and 3V
Environment
Operating Temperature
-40° C to +85° C
Storage Temperature
-40 °C to +85°C
Humidity
10% to 90%
Power Requirements
Operating Voltage
3.3V - 5V
Input Power
3.3 - 5VDC
IP, SMS
Supported IP Protocols
FTP, SMTP, TCP and UDP.
SMS
Point-to-point mobile originated and mobile terminated SMS
Concatenated SMS supported
Text and PDU mode
SMS over GPRS
Certifications, Compliance
EMC Compliance
EN55022
EN55024
Radio Compliance
EN 301 511
EN 301 489-1
EN 301 489-7
Safety Compliance
IEC 60950-1
Note: Radio performance may be affected by temperature extremes. This is normal.

CHAPTER 3 –SPECIFICATIONS
7
SocketModem Cell GPRS MTSMC-G3 Device Guide
Mounting Hardware
The board has three mounting holes at corners. Use #4 or M3 hardware for mounting the SocketModem to the
board. Refer to the Mechanical Drawings for more information.
Recommended Parts
Manufacturer
Part
Part Number
PEM PennEngineering
Surface Mount Standoff
SMTSO-M3-4ET
RAF Electronic Hardware
3/16” Hex Female Standoff
2051T-440-S-12 Zinc
RAF Electronic Hardware
4.5mm Hex Female Standoff
1251-3005-S-12 Zinc
Device Reset
The SocketModem is ready to accept commands after a fixed amount of time (“X” Time) after power-on or reset.
Model
Time Constant
"X" Time
Minimum Reset Pulse1
MTSMC-G3
250 ms
6 seconds
100us
1The SocketModem may respond to a shorter reset pulse.
Reset GPRS
Use this signal to force a reset procedure by providing low level during reset of at least 500us. The signal is
considered an emergency reset only. A reset procedure is already driven by internal hardware during the power-
up sequence. If no external reset is necessary, leave this input open. If using emergency reset, it has to be driven
by an open collector or an open drain.

CHAPTER 3 –SPECIFICATIONS
SocketModem Cell GPRS MTSMC-G3 Device Guide
8
RS-232 Signal DC Electrical Characteristics
Units: Volts
Applies to the following pins:
Pin
Signal Name
Pin
Signal Name
J33
-RTS
J37
-DSR
J34
-RXD
J38
-CTS
J35
-TXD
J39
-DCD
J36
-RI
J40
-DTR
Parameter
Minimum
Maximum
3.3 Volt Powered
Input Low Level
0
0.55
Input High Level
1.5
3.3
Output Low Level
0
0.55
Output High Level
2.35
3.3
5 Volt Powered
Input Low Level
0
0.8
Input High Level
2.3
5
Output Low Level
0
0.55
Output High Level
3.7
5
Absolute Maximum Rating
All models can run with an input voltage of either 3.3V or 5V. The maximum voltage on any signal pin equals the
input voltage.
Electrical Characteristics Other Pins
Pin
Signal Name
VIL
VIH
VOL
VOH
Min
Max
Min
Max
Min
Max
Min
Max
J24
-RESET
0.8
2.0
--
--
--
--
J26
GND
--
--
--
--
--
--
--
--
J41
GND
--
--
--
--
--
--
--
--
J61
VCC
--
--
--
--
--
--
--
--
J63
GND
--
--
--
--
--
--
--
--

CHAPTER 3 –SPECIFICATIONS
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SocketModem Cell GPRS MTSMC-G3 Device Guide
Pinout Specifications
Pin
Signal Name
Logic Level Voltage1
I/O
Description
J24
–RESET
3.3 –5.0
I
Device reset (active low)
J26
GND
GND
GND
Ground
J33
–RTS
5.0
I
Request to send (active low)
J34
–RXD
5.0
O
Received data (active low)
J35
–TXD
5.0
I
Transmitted data (active low)
J36
–RI
5.0
O
Ring indicator (active low)
J37
–DSR
5.0
O
Data set ready (active low)
J38
–CTS
5.0
O
Clear to send (active low)
J39
–DCD
5.0
O
Data carrier detect (active low)
J40
–DTR
5.0
I
Data terminal ready (active low)
J41
GND
GND
GND
Ground
J61
VCC
5.0
PWR
DC input power
J63
GND
GND
GND
Ground
1A hyphen (-) indicates a range of acceptable logic levels.
Power Measurements
Multi-Tech Systems, Inc. recommends that you incorporate a 10% buffer into your power source when
determining product load.
Radio Protocol
Sleep Mode
Current
(Amps)
Cellular Call Box
Connection No
Data (Amps)
Average Measured
Current (Amps) at
Maximum Power
Average TX
Pulse Amplitude
Current (Amps)
Total Inrush Charge
measured in
Millicoulombs (mC)
3.3 Volts
GSM 850 Mhz
0.032
0.054
0.358
1.85
14.02
5 Volts
GSM 850 Mhz
0.028
0.042
0.223
1.1
13.96
Maximum Power: The continuous current during maximum data rate with the radio transmitter at maximum
power.
TX Pulse: The average peak current during a GSM850 transmission burst period. The transmission burst duration
for GSM850 varies depending on what transmission scheme is being deployed (GPRS Class 8, Class 10, GSM, etc.).
In-Rush Charge: Total inrush charge at power on.

CHAPTER 4 –APPLICATION NOTES
SocketModem Cell GPRS MTSMC-G3 Device Guide
10
EMC, Safety, and R&TTE Directive Compliance
Hereby, MULTI-TECH SYSTEMS INC, declares that this Socket Wireless Module is in compliance with the essential
requirements and other relevant provisions of Directive 1999/5/EC.
RF spectrum use (R&TTE art. 3.2)
EN 301 511 V9.0.2
EN 300 440-2 V1.4.1(1)
EMC (R&TTE art. 3.1b)
EN 301 489-1 V1.9.2
EN 301 489-3 V1.4.1(1)
EN 301 489-7 V1.3.1
Health & Safety (R&TTE art. 3.1a)
EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011 + AC:2011
EN 62311:2008
(1)Only applicable to MTSMC-G3-MI-GP and MTSMC-G3-GP product version.
The conformity assessment procedure referred to in Article 10 and detailed in Annex IV of Directive 1995/5/EC has
been followed with the involvement of the following Notified Body:
AT4 wireless, S.A.
Parque Tecnologico de Andalucía
C/ Severo Ochoa 2
295990 Campanillas –Málaga
SPAIN
Notified Body No: 1909
Thus, the following marking is included in the product:
There is no restriction for the commercialization of this device in all the countries of the European Union.
The CE mark is affixed to this product to confirm compliance with the following European Community Directives:
Council Directive 2004/108/EC of 15 December 2004 on the approximation of the laws of Member States
relating to electromagnetic compatibility;
and
Council Directive 2006/95/EC of 12 December 2006 on the harmonization of the laws of Member States
relating to electrical equipment designed for use within certain voltage limits;
and
Council Directive 1999/5/EC of 9 March 1999 on radio equipment and telecommunications terminal
equipment and the mutual recognition of their conformity.

CHAPTER 4 –APPLICATION NOTES
11
SocketModem Cell GPRS and SocketModem iCell GPRS MTSMC-G3 Device Guide
Application Notes
LED Interface
The LED signal indicates the SocketModem working status.
LED 2 –Link Status
LED 1 Signal
Link Status LED
OFF
Download mode or switched OFF
ON
Continuously lit
Switched ON (not registered on the network)
Blinking
Switched ON (registered on the network)
RF Performances
RF performances are compliant with the 3GPP release 4.
Receiver Features
Category
Description
850 GSM Sensitivity
-108 dBm
900 E-GSM Sensitivity
-108 dBm
1800 DCS Sensitivity
-108 dBm
1900 PCS Sensitivity
-108 dBm
Transmitter Features
Category
Description
Maximum output power (GSM/E-GSM)
+33 dBm ± 2 dB
Maximum output power (DCS/PCS)
+30 dBm ± 2 dB
RF Connection and Antenna
The RF connector on the SocketModem is a UFL standard type. See the Universal Socket Developer Guide for
antenna details.

CHAPTER 4 –APPLICATION NOTES
SocketModem Cell GPRS MTSMC-G3 Device Guide
12
Changing the Quad Band
If for any reason, such as moving the modem from one geographical area to another, you want to change the
band, you can accomplish this by using the #BND AT Command.
Changing the GSM Band
To change the GSM band, use a terminal application such as HyperTerminal for entering the AT Command.
1. Start the terminal application.
2. Type AT+BND=<Band>. Press Enter.
For <Band>, enter the option you desire:
0= GSM 900MHz + DCS 1800MHz
1= GSM 900MHz + PCS 1900MHz
2= GSM 850MHz + DCS 1800MHz
3= GSM 850MHz + PCS 1900MHz
Example:
AT+BND=0. Press Enter.