Multi-Tech MTSMC-G2, MTSMC-G2-V, MTSMC-G2-ED, MTSMC-G2-V-ED, MTSMC-G2-IP Hardware Manual

SocketModem® GSM

MTSME-G2

Hardware Guide for Developers

Hardware Guide for Developers, PN S000342J, Version J

Embedded Wireless Modems

SocketModem Cell – MTSMC-G2

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 © 2004-9 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. See the Multi-Tech Web site for current
revisions of documentation.

Trademarks

Trademarks and Registered Trademarks of Multi-Tech Systems, Inc. are SocketModem, SocketWireless, SocketEthernet
IP, and the Multi-Tech logo.
Microsoft and Windows are trademarks or registered trademarks of Microsoft Corporation in the United States and other
countries. Bluetooth is a registered trademark of the Bluetooth SIG, Inc. Wi-Fi is a registered trademark of the Wi-Fi Alliance.

Patents

This device covered by one or more of the following patents: 6,031,867; 6,012,113; 6,009,082; 5,905,794; 5,864,560;
5,815,567; 5,815,503; 5,812,534; 5,809,068; 5,790,532; 5,764,628; 5,764,627; 5,754,589; 5,724,356; 5,673,268; 5,673,257;
5,644,594; 5,628,030; 5,619,508; 5,617,423; 5,600,649; 5,592,586; 5,577,041; 5,574,725; 5,559,793; 5,546,448; 5,546,395;
5,535,204; 5,500,859; 5,471,470; 5,463,616; 5,453,986; 5,452,289; 5,450,425; 5,355,365; 5,309,562; 5,301,274. Other
Patents Pending.

Warranty and Repairs Statement

Please see the Multi-Tech Systems, Inc. Web site for the current Warranty and Repairs Statement.

http://www.multitech.com/COMPANY/Policies/warranty/

World Headquarters

Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Internet Address:

http://www.multitech.com

Technical Support
Country By Email By Phone

Europe, Middle East, Africa: [e-mail] +(44) 118 959 7774
U.S., Canada, all others:

[e-mail] 800-972-2439 or 763-717-5863

2

TABLE OF CONTENTS

Chapter 1 – SocketModem

®

Cell (MTSMC-G2) & SocketModem

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

Product Build Options and Ordering Information.................................................................................................4

AT Commands Reference Guides...........................................................................................................................4

Technical Specifications .........................................................................................................................................5

Electrical Characteristics ........................................................................................................................................6

Power Consumption ................................................................................................................................................6

Mechanical Drawings – Basic Build .......................................................................................................................7

Mechanical Drawings – Voice Build .......................................................................................................................8

Mechanical Drawings – IP Build..............................................................................................................................9

Application Notes...................................................................................................................................................10

Flashing LED Interface ......................................................................................................................................10

RF Performances................................................................................................................................................10

RF Connection and Antenna.............................................................................................................................10

Microphone Inputs .............................................................................................................................................10

Changing the Quad Band ......................................................................................................................................11

Chapter 2 – The Antenna System...............................................................................................................................12

Antenna System for Embedded GSM Modems....................................................................................................12

RF Specifications...................................................................................................................................................12

Antenna...................................................................................................................................................................12

Chapter 3 – Design Considerations ...........................................................................................................................13

Noise Suppression Design Considerations.........................................................................................................13

PC Board Layout Guidelines.................................................................................................................................13

Electromagnetic Interference (EMI) Considerations...........................................................................................13

Electrostatic Discharge Control............................................................................................................................14

Chapter 4 – Safety Notices and Warnings .................................................................................................................15

Telecom Safety Warning....................................................................................................................................15

Wireless Safety...................................................................................................................................................15

Upgrading Firmware ..............................................................................................................................................16

Account Activation for Wireless Devices.............................................................................................................16

Wireless Approvals and Labeling Requirements................................................................................................17

Wireless Approvals (GSM, CDMA)....................................................................................................................17

Regulatory Compliance Statements.....................................................................................................................19

Waste Electrical and Electronic Equipment Statement ..................................................................................22

Restriction of the Use of Hazardous Substances (RoHS)...............................................................................23

Information on HS/TS Substances according to Chinese Standards in English..........................................24

Information on HS/TS Substances According to Chinese Standards in Chinese........................................25

Chapter 5 – SocketModem Developer Board.............................................................................................................26

SocketModem Developer Board ...........................................................................................................................26

Board Components............................................................................................................................................27

Jumpers and Corresponding Signals...............................................................................................................27

SocketModem Developer Board Block Diagram .............................................................................................28

Developer Board Schematics............................................................................................................................29

Developer Board Schematics............................................................................................................................30

Developer Board Schematics............................................................................................................................32

Developer Board Schematics............................................................................................................................33

®

iCell (MTSMC-G2-IP)...........................................4

3

®

Chapter 1 – SocketModem

®

G2) & SocketModem

iCell (MTSMC-G2-IP)

Cell (MTSMC-

Introduction

The MTSMC-G2 is a serial to wireless quad-band GPRS SocketModem. It is a complete, ready-to-integrate SocketModem
that offers standards-based multi-band GSM/GPRS Class 10 performance. It is based on industry-standard open interfaces
and utilizes Multi-Tech’s universal socket design. The SocketModem is available with the Multi-Tech's Universal IP™ stack to
bring embedded Internet connectivity to any device.

Notes about Activation:

• These units are shipped without network activation.

• To connect to the wireless network, you will have to establish a wireless account. See the Wireless Activation

procedures on separate sheets included with the Developer Kit and available on the Developer Kit CD.

Product Build Options and Ordering Information

Product Description Region Order This

MTSMC-G2 Quad-band GPRS SocketModem Cell US Default
MTSMC-G2-ED Quad-band GPRS SocketModem Cell EU Default
MTSMC-G2-V Quad-band GPRS SocketModem Cell with Voice US Default
MTSMC-G2-V-ED Quad-band GPRS SocketModem Cell with Voice EU Default
MTSMC-G2-IP Quad-band GPRS SocketModem iCell with Universal IP US Default
MTSMC-G2-IP-ED Quad-band GPRS SocketModem iCell with Universal IP EU Default

Developer Kit

MTSMI-UDK Universal Developer Kit Global

How to Read the Product Codes in the Table Above:

G2 GPRS
ED European Default
V Voice (microphone and speaker)
IP Universal IP™ Stack
UDK Universal Developer Kit

Other Product Codes:

The complete product code may end in .Rx. For example, MTSMC-G2.Rx.
“R” indicates product revision. “x” is the revision number.

Note: All products can be ordered in single packs or 50-packs. Single pack product codes end in SP.

Product

3

AT Commands Reference Guides

Products AT Commands Reference Guide Title & Document Number Fax Commands Voice Commands
SocketModem Cell

(MTSMC-G2 and
MTSMC-G2-V )

SocketModem iCell
(MTSMC-G2-IP)

GPRS AT Commands for Multi-Tech G2 Wireless Modems
(S000463x)

AT Commands for Multi-Tech G2 Wireless Modems with IP
Connectivity (S000469x)

GPRS AT Commands for Multi-Tech G2 Wireless Modems
(S000463x)

Universal IP Commands (S000457x)

NA Included

NA Included

4

Technical Specifications

The MTSMC-G2 and MTSMC-G2-IP SocketModems meet the following specifications:

Category Description

Standards GPRS Class 10
Frequency Bands Quad-band GSM/EGPRS 850/900/1800/1900 MHz
Serial/Data Speed

Data Format 10 bit Serial Asynchronous
Data Error Correction MNP2
Data Compression V.42bis
Weight
Size
Operating Temperature
Storage Temperature -40 °C to +85°C
Humidity 10% to 90%
Input Power 5VDC

Operating Voltage Supply Range: VCC

Voltage at Any Signal Pin Minimum: GND

Antenna Connector Surface mount UFL
SIM Holder Standard 3V SIM holder
IP Protocols Supported MTSMC-G2

M2M Applications MTSMC-G2-IP

Compliance

Warranty Two years

Serial interface supports DTE speeds up to 921.6K
IP interface supports DTE speeds at the fixed rate of 115.2
Packet data up to 85.6K bps
Circuit-switched data (GPRS) up to 14.4K bps transparent and non-transparent
Supports data rates of 921600, 460800, 230400, 115200 bps

1 oz. (28 g)

3.15" x 1.375" (80.010 mm x 34.925 mm)

-40° C to +85° C

Maximum: 5.5

Maximum: VCC

DNS Resolve, FTP client, LCP, PPP (dial-out),TCP socket, UDP socket, PAP &
CHAP authentication

MTSMC-G2-IP

DNS Resolve, FTP client, Ping, POP3 client, PPP (dial-out), SMTP, TCP RAW client
& server, UDP RAW client & server, PAP & CHAP authentication

Automatic connect/reconnect, device monitor, modem emulation, Ping & TCP keep
alive, wake-up on caller ID, wake-up on ring

EMC Compliance

FCC Part 15
EN55022
EN55024

Radio Compliance

FCC Part 22
FCC Part 24
RSS 132
RSS 133
EN 301 511
EN 301 489-1
EN 301 489-7
AS/ACIF S042.1
AS/ACIF S042.3

Safety Compliance

UL 60950-1
cUL 60950-1
EN 60950-1
AS/NZS 60950-1

Network Compliance

PTCRB
GCF

Comment [DAR1]: From Dustin
6/24/09

Comment [DAR2]: From Dustin
6/24/09

5

Specifications Continued:

Category Description
Features Modes of Operation: Data Mode, Command Mode, and Voice Mode

Embedded TCP/IP stack
Short Message Services (SMS)
RTS/CTS hardware flow control
AT command compatible
Support for HR, FR, EFR, and AMR (Adaptive Multi Rate) voice codec support
Flash upgradeable
Non-volatile memory

Electrical Characteristics

Units: Volts
5V DC Characteristics (VDD = 5V ± 0.25V)

Parameter Minimum Maximum
Digital Signal Input Low Level

–DTR (40), –TXD (35), –RTS (33)

Digital Signal Input High Level

–DTR (40), –TXD (35), –RTS (33)

Digital Signal Output Low Level

–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)

Digital Signal Output High Level

–DCD (39), –CTS (38), –DSR (37), –RI (36), –RXD (34)

Reset (Low Active) Input Low Level

–Reset (24)

Reset (Low Active) Input High Level

–Reset (24)

Digital Input Capacitance 14pF

VDDMAX

= 5.25V

GND 0.8

2 Vcc

0.4

3.84

0.8

2

Power Consumption

MTSMC-G2 Measured Power* Measures at Input Voltage 5.00

Current (AMPS) 0.049 0.113 0.24 1.10
Watts 0.245 0.564 1.195

MTSMC-G2-IP Measured Power* Measures at Input Voltage 5.00

Current (AMPS) 0.080 0.135 0.280 1.250
Watts 0.382 0.664 1.358

Note: Current Peak = 1500mA maximum during Tx burst.

* Multi-Tech Systems, Inc. recommends that the customer incorporate a 10% buffer into their power source when
determining product load.

Sleep Typical Maximum Peak

Sleep Typical Maximum Peak

6

Comment [DAR3]: Measurements
for MTSMC-G2-IP 73120965 Rev 0
from Tom Fix. He suggested the
current peak text also 4/22/09. He
said these measurements apply to G2
without IP, too.

Comment [DAR4]: Measurements
for MTSMC-G2-IP 73120965 Rev 0
from Tom Fix. He suggested the
current peak text also 4/22/09. He
said these measurements apply to G2
without IP, too.

Mechanical Drawings – Basic Build

7

Mechanical Drawings – Voice Build

8

Mechanical Drawings – IP Build

9

Application Notes

Flashing LED Interface

The flashing LED signal is used to indicate the working mode of the SocketModem.

LEDs and SocketModem Status

Signal SocketModem Status

OFF Download mode or switched OFF>

Continuously lit Switched ON (not registered on the network) ON
Flashing Switched ON (registered on the network)

RF Performances

RF performances are compliant with the ETSI recommendation 05.05 and 11.10.

Note: The following statistics are subject to change due to pending test results.

The main parameters are:

Receiver Features

• EGSM Sensitivity : < -104 dBm

• GSM 1800/GSM 1900 Sensitivity : < -102 dBm

• Selectivity @ 200 kHz : > +9 dBc

• Selectivity @ 400 kHz : > +41 dBc

• Dynamic range : 62 dB

• Intermodulation : > -43 dBm

• Co-channel rejection : + 9 dBc

Transmitter Features

• Maximum output power (EGSM) : 33 dBm ± 2 dB

• Maximum output power (DCS/PCS) : 30 dBm ± 2 dB

• Minimum output power (EGSM): 5 dBm ± 5 dB

• Minimum output power (DCS/PCS): 0 dBm ± 5 dB

• H2 level : < -30 dBm

• H3 level : < -30 dBm

• Noise in 925 - 935 MHz : < -67 dBm

• Noise in 935 - 960 MHz : < -79 dBm

• Noise in 1805 - 1880 MHz : < -71 dBm

• Phase error at peak power : < 5 ° RMS

• Frequency error : ± 0.1 ppm max

Comment [DAR5]: Tom Hofstedt
expects text results in by June 24th.

RF Connection and Antenna

The RF connector on the SocketModem GPRS is a UFL standard type. See Chapter 1 for Antenna System details.

Microphone Inputs

The MIC inputs are differential ones. They already include the convenient biasing for an electret microphone (0.5 mA
and 2 Volts). This electret microphone can be directly connected on these inputs. The impedance of the microphone
has to be around 2K. These inputs are the standard ones for a handset design.

The gain of the MIC inputs is internally adjusted. The gain can be tuned from 30dB to 51dB. The connection to the
microphone is direct.

C1 = 22pF to 100 pF
33 pF recommended

C1

MIC2N

10

MIC2P