Multitech MultiModem Cell MTCBA-E1 User manual

®
Wireless Modem
User Guide

Copyright and Technical Support
2 Multi-Tech Systems, Inc. MultiModem Cell User Guide
MultiModem® Cell User Guide
Wireless Modem
MTCBA-E1, MTCBA-E1-U, MTCBA-C1, MTCBA-C1-U, MTCBA-G2, MTCBA-G2-U, MTCBA-H5, MTCBA-H5-U
S000489F, Revision F
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 representation or warranties with respect to the contents hereof and specifically disclaims 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. Check Multi-Tech’s
Web site for current versions of our product documentation.
Revision History
Revision
Date
Description
A
07/14/10
Initial release.
B
10/14/10
Updated operating temperatures, added weight, and added a note for the DSR signal on pin6 of the serial
connector.
C
09/21/11
Removed references to product CD.
D
12/12/12
Added pacemaker statement, updated RoHS and other regulatory statements.
E
04/12/13
Added H5 models
F
04/29/13
Updated and standardized specifications table.
Trademarks and Logos
The Multi-Tech logo and MultiModem are registered trademarks of Multi-Tech Systems, Inc. Windows is a registered trademark of
Microsoft in the U.S. and other countries. Other trademarks and trade names mentioned in this publication belong to their respective
owners.
Contacting Multi-Tech Support
In order to better serve our customers, manage support requests and shorten resolution times, we have created the online web portal
allowing you to submit questions regarding Multi-Tech products directly to our technical support team. Get answers to your most complex
questions, ranging from implementation, troubleshooting, product configuration, firmware upgrades and much more.
To create an account and submit a Support Case on the Portal, visit https://support.multitech.com
Online Web Portal https://support.multitech.com
The Knowledge Base provides immediate answers to your questions and gives you access to support resolutions for all Multi-Tech products.
Visit our support area on the website for other support services.
Knowledge Base and Support Services www.multitech.com/support.go
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: [phone] or 800-328-9717
Fax: [phone]
Technical Support
Business Hours: M-F, 9am to 5pm CST
Country
By Email
By Phone
Europe, Middle East, Africa:
[email protected]
+(44) 118 959 7774
U.S., Canada, all others:
[email protected]
[phone] or [phone]
Warranty
To read the warranty statement for your product, please visit: http://www.multitech.com/warranty.go

Contents
MultiModem Cell User Guide 3
Chapter 1 –Product Description and Specifications...........................................................................................5
Product Description ........................................................................................................................................................ 5
Related Documentation .................................................................................................................................................. 6
Safety.............................................................................................................................................................................. 6
General Safety.................................................................................................................................................................. 6
RF Interference Issues...................................................................................................................................................... 6
Interference with Pacemakers and Other Medical Devices............................................................................................. 7
Vehicle Safety................................................................................................................................................................... 7
Maintenance of the Wireless MultiModem..................................................................................................................... 7
Handling Precautions ....................................................................................................................................................... 8
Front Panel...................................................................................................................................................................... 8
LEDs.................................................................................................................................................................................. 9
Package Contents............................................................................................................................................................ 9
Specifications ................................................................................................................................................................ 10
MTCBA-E1 and MTCBA-E1-U ......................................................................................................................................... 10
MTCBA-C1 and MTCBA-C1-U ......................................................................................................................................... 11
MTCBA-G2 and MTCBA-G2-U ........................................................................................................................................ 12
MTCBA-H5 and MTCBA-H5-U ........................................................................................................................................ 13
9-Pin Fem-D Sub Serial Connector ................................................................................................................................. 15
4-Position DIP Switch .................................................................................................................................................... 15
Chapter 2 –Activating and Installing...............................................................................................................16
Activating Your Wireless Account ................................................................................................................................. 16
Inserting the SIM Card into Holder (if required) ............................................................................................................ 16
Connecting the Antenna, Serial or USB Cable, Power, Optional Power or Voice Cable .................................................. 17
Optional Mounting........................................................................................................................................................ 18
Flat Surface Mounting.................................................................................................................................................... 18
Installing USB CDC-ACM Virtual COM Port .................................................................................................................... 19
Installing Virtual COM Port ............................................................................................................................................ 19
Installing the Modem Driver .......................................................................................................................................... 20
Chapter 3 –Using Your Wireless Modem ........................................................................................................25
Phone Numbers for the Wireless Modem ..................................................................................................................... 25
Examples of Useful AT Commands ................................................................................................................................ 25
Verifying Signal Strength................................................................................................................................................ 25
Checking Network Registration and Roaming Status .................................................................................................... 25
Checking the Modem’s Identity ..................................................................................................................................... 26
Connecting to the Internet ............................................................................................................................................ 26
Connecting to a CDMA Network for Internet Access..................................................................................................... 26
Connecting to an EDGE/GPRS Network for Internet Access .......................................................................................... 26
Create Your Dial-Up Connection in Windows Vista and XP ........................................................................................... 28
Generic Dial-Up Method - Non-Windows ...................................................................................................................... 29
Appendix A –Regulatory Compliance .............................................................................................................30
FCC Part 15 Class B Statement....................................................................................................................................... 30
EMC, Safety, and R&TTE Directive Compliance ............................................................................................................. 30

Contents
4 MultiModem Cell User Guide
International Modem Restrictions ................................................................................................................................ 30
EMC Requirements for Industry Canada........................................................................................................................ 31
Waste Electrical and Electronic Equipment Statement .................................................................................................. 31
WEEE Directive............................................................................................................................................................... 31
Instructions for Disposal of WEEE by Users in the European Union .............................................................................. 31
REACH Statement.......................................................................................................................................................... 32
Restriction of the Use of Hazardous Substances (RoHS) ................................................................................................ 32
Information on HS/TS Substances According to Chinese Standards............................................................................... 33
Information on HS/TS Substances According to Chinese Standards (in Chinese) ........................................................... 34
依照中国标准的有毒有害物质信息............................................................................................................................ 34
Appendix B - Cellular Information...................................................................................................................35
Antenna System for Cellular Devices............................................................................................................................. 35
FCC Requirements for the Antenna ............................................................................................................................... 35
Antenna Specifications.................................................................................................................................................. 35
CDMA RF Specifications ................................................................................................................................................. 35
CDMA Antenna Requirements/Specifications ............................................................................................................... 35
GSM/EGSM RF Specifications ........................................................................................................................................ 35
GSM Antenna Requirements/Specifications.................................................................................................................. 36
PTCRB Requirements for the Antenna........................................................................................................................... 36
Antennas Available from Multi-Tech Systems, Inc. ....................................................................................................... 36
Appendix C –DC Power Cable.........................................................................................................................37
DC Power Cable Dimensions .......................................................................................................................................... 37

MultiModem Cell User Guide 5
Product Description
The Multi-Tech MultiModem® Cell cellular modems are ready-to-deploy, standalone modems that provide
wireless data communication and integrate seamlessly with virtually any application. The MultiModem Cell
cellular modem is based on industry-standard open interface and uses Multi-Tech’s Universal Socket design. The
Cell modem is designed with a quad-band GSM/GPRS network, a dual-band CDMA2000 1xRTT network or a Penta-
band HSPA+ network. The modem includes a broad range of interface options including RS232, RS422, or a USB
interface. All MultiModem Cells can be desktop or panel mounted.
Model
Description
MTCBA-E1
Quad-band E-GPRS Class 12 performance and either RS232 serial interface or RS422 serial
interface
MTCBA-E1-U
Quad-band E-GPRS Class 12 performance and USB connectivity
MTCBA-C1
Multi-band CDMA2000 1xRTT performance and either RS232 serial interface or RS422
serial interface
MTCBA-C1-U
Multi-band CDMA2000 1xRTT performance and USB connectivity
MTCBA-G2
Quad-band GPRS Class 10 performance and either RS232 serial interface or RS422 serial
interface
MTCBA-G2-U
Quad-band GPRS Class 10 performance and USB connectivity
MTCBA-H5
HSPA+ and RS232 serial interface and RS-422 serial interface
MTCBA-H5-U
HSPA+ and USB connectivity

Chapter 1 –Product Description and Specifications
6 MultiModem Cell User Guide
Related Documentation
The following table describes additional documentation for each model.
Model
Additional Documentation
MultiModem MTCBA-E1 (EDGE)
You can configure the MultiModem MTCBA-E1 wireless router using the
EDGE AT Commands. For more information refer to the Reference Guide
for the MultiModem Wireless EDGE Modems, part number S000474x.
MultiModem MTCBA-G2 (GPRS)
You can configure the MultiModem MTCBA-G2 wireless modem using
the GPRS AT Commands. For more information, refer to the Reference
Guide for the MultiModem Wireless GPRS Modems, part number
S000463x
MultiModem MTCBA-C1 (CDMA)
You can configure the MultiModem MTCBA-C1 wireless router using the
CDMA-C1 AT Commands. For more information, refer to the Reference
Guide for the MultiModem Wireless CDMA-C1 Modems, part number
S000478x.
MultiModem MTCBA-H5 (HSPA+)
You can configure the MultiModem MTCBA-H5 wireless router using the
HSPA+ AT Commands. These commands are documented in the
Reference Guide part number S000528x.
Safety
General Safety
The modem is designed for and intended to be used in fixed and mobile applications. Fixed means the device is
physically secured at one location and cannot be easily moved to another location. Mobile means the device is
used in other than fixed locations.
Caution: Maintain a separation distance of at least 20 cm (8 inches) between the transmitter’s antenna and the
body of the user or nearby persons. The modem is not designed for or intended to be used in portable
applications within 20 cm (8 inches) of the user’s body.
RF Interference Issues
Follow any special regulations regarding the use of radio equipment due to the possibility of radio frequency (RF)
interference. Follow the safety advice given below.
●Switch OFF your wireless device when in an aircraft. Using cellular telephones in an aircraft may endanger
aircraft operation, disrupt the cellular network, and is illegal. Failing to observe this restriction may lead to
suspension or denial of cellular telephone services to the offender, legal action, or both.
●Switch OFF your wireless device when around gasoline or diesel-fuel pumps and before filling your vehicle
with fuel.
●Switch OFF your wireless device in hospitals and any other place where medical equipment may be in use.
●Respect restrictions on the use of radio equipment in fuel depots, chemical plants, or where blasting
operations are in progress.
●Operating your wireless device close to other electronic equipment may cause interference if the equipment
is inadequately protected. Observe any warning signs and manufacturers’ recommendations.

Chapter 1 –Product Description and Specifications
MultiModem Cell User Guide 7
Interference with Pacemakers and Other Medical Devices
Potential interference
Radiofrequency energy (RF) from cellular devices can interact with some electronic devices. This is
electromagnetic interference (EMI). The FDA helped develop a detailed test method to measure EMI of implanted
cardiac pacemakers and defibrillators from cellular devices. This test method is part of the Association for the
Advancement of Medical Instrumentation (AAMI) standard. This standard allows manufacturers to ensure that
cardiac pacemakers and defibrillators are safe from cellular device EMI.
The FDA continues to monitor cellular devices for interactions with other medical devices. If harmful interference
occurs, the FDA will assess the interference and work to resolve the problem.
Precautions for pacemaker wearers
If EMI occurs, it could affect a pacemaker in one of three ways:
●Stop the pacemaker from delivering the stimulating pulses that regulate the heart's rhythm.
●Cause the pacemaker to deliver the pulses irregularly.
●Cause the pacemaker to ignore the heart's own rhythm and deliver pulses at a fixed rate.
Based on current research, cellular devices do not pose a significant health problem for most pacemaker wearers.
However, people with pacemakers may want to take simple precautions to be sure that their device doesn't cause
a problem.
●Keep the device on the opposite the side of the body from the pacemaker to add extra distance between the
pacemaker and the device.
●Avoid placing a turned-on device next to the pacemaker (for example, don’t carry the device in a shirt or
jacket pocket directly over the pacemaker).
Vehicle Safety
●Do not use this device while driving.
●Respect national regulations on the use of cellular telephones in vehicles.
●If incorrectly installed in a vehicle, operating the wireless device could interfere with the vehicle’s electronics.
To avoid such problems, use qualified personnel to install the device. The installer must verify that vehicle
electronics are protected from interference.
●Using an alert device to operate a vehicle’s lights or horn is not permitted on public roads.
Maintenance of the Wireless MultiModem
The suggestions that follow can help help you maintain your device.
●Do not expose the MultiModem to any extreme environment where the temperature or humidity is high.
●Do not attempt to disassemble the MultiModem. There are no user serviceable parts inside.
●Do not expose the MultiModem to water, rain, or spilled beverages. It is not waterproof.
●Do not abuse your MultiModem by dropping, knocking, or violently shaking it. Rough handling can damage it.
●Do not place the MultiModem alongside computer discs, credit or travel cards, or other magnetic media. The
information contained on discs or cards may be affected by the phone.
●Using accessories that Multi-Tech has not authorized or that are no compliant with Multi-Tech’s accessory
specifications may invalidate the MultiModem warranty.

Chapter 1 –Product Description and Specifications
8 MultiModem Cell User Guide
Handling Precautions
Handle all electronic devices with certain precautions to avoid damage due to the static charge accumulation.
Although input protection circuitry has been incorporated into the devices to minimize the effect of this static
build up, proper precautions should be taken to avoid exposure to electrostatic discharge during handling and
mounting.
Front Panel
The front panel has LEDs that display modem activity—such as transmit and receive data, carrier detection, link
status, terminal ready indicating connection to the pc, and the power indicator. The SIM door on the right side
provides access to the SIM card holder for those configurations.
MTCBA-E1/-U, MTCBA-G2/-U, MTCBA-H5/-U
MTCBA-H5-U has 2 LEDs: LS and PWR
MTCBA-C1/-U

Chapter 1 –Product Description and Specifications
MultiModem Cell User Guide 9
LEDs
LED Indicators
TD
Transmit Data: Lit when modem is transmitting data.
RD
Receive Data: Lit when modem is receiving data.
CD
Carrier Detect: Lit when data connection has been established.
TR
Terminal Ready: Lit when modem is transmitting data.
LS
Link Status Dependent on Model
-E1 version* (AT^SSYNC=1)
-G2 version
-C1 version
-H5 versions
Permanently off. ME is in one of
the following modes: Power
Down mode, Airplane mode Non-
Cyclic Sleep mode with no
temporary wake-up event in
progress.
600 ms on/600 ms off
Limited Network Service: No SIM
card inserted or no PIN entered,
or network search in progress or
ongoing user authentication, or
network login in progress.
75 ms on/3 sec off
Idle mode: The mobile is
registered to the GSM network
(monitoring control channels and
user interactions). No call is in
progress.
75 ms on/ 75 ms off/75 ms on/3
sec off
One or more GPRS contexts
activated.
500 ms on/ 25 ms off
Packet switched data transfer in
progress.
Permanently on
CSD call –Connected to remote
party.
Continuous “on” state
indicates that the
wireless modem is not
registered on the
network.
Flashing states:
200 ms on / 2 sec off
Indicates registration on
network.
200 ms on / 600 ms off
Indicates it is registered
on a network and
communication is in
progress.
Off state. Modem is off
(not ready) or in
download mode.
Continuous “on” state
indicates that the
wireless modem is not
registered on the
network.
Flashing states:
200 ms on / 2 sec off
Indicates registration
on network.
200 ms on / 600 ms off
Indicates it is registered
on a network and
communication is in
progress.
Off state. Modem is off
(not ready) or in
download mode.
When lit,
indicates the
radio
module has
power.
PWR
Indicates presence of DC power when lit.
Note: The Link Status (LS) LED requires an AT^SSYNC=1 command on power up or Reset for the LED to perform as
described. For other EDGE AT commands, refer to the EDGE (E1) AT Command Reference Guide.
Package Contents
Note: Your wireless provider supplies the SIM card (not needed for –C1 versions).
Unbundled Package with No Accessories
Bundled Package With Accessories
1 modem
Note: You must supply mounting screws, AC or DC
power supply, and an antenna.
1 modem
1 antenna
1 RS232 or USB cable
1 power supply with serial versions
Note: You must supply mounting screws.

Chapter 1 –Product Description and Specifications
10 MultiModem Cell User Guide
Specifications
MTCBA-E1 and MTCBA-E1-U
Category
Description
General
Performance
Edge: E-GPRS Class 12
GPRS: Multislot Class 12
Frequency Bands
Quad Band
850/900/1800/1900 MHz
Speed
Packet Data1
EDGE: E-GPRS up to 240 Kbps, coding scheme MCS1-9, mobile station Class B, LLC layer, 4
time slots
GPRS: Full PBCCH support, coding scheme 1-4, mobile station Class B
Circuit Switched Data
Up to 14.4 Kbps non-transparent
SMS
SMS
Text & PDU, Point-to-Point, Cell broadcast
Connectors
Power Connector
2.5mm miniature (screw-on)
RF Antenna Connector
50 ohm SMA (female connector)
RS232 Connector
DE9
SIM Connector
Standard 1.8 and 3 V SIM receptacle
USB Connector
Type B
Power Requirements
Voltage
9 V to 32 V DC (serial only)
5.0 V (USB input voltage supplied by USB connector)
Physical Description
Dimensions (L x W x H)
2.35 in x 4.11 in x 1.07 in
8.6 cm x 12.5 cm x 2.7 cm
Weight (Device only)
0.4 lbs
0.175 Kg
Environment
Operating Temperature2
(verified tested temp)
-31° to 167° F
-35° to 75° C
Storage Temperature
-40° to 185° F
-40° to 85° C
Humidity
Relative humidity 20%-90% noncondensing
Certifications, Compliance
EMC Compliance
FCC Part 15
EN55022
EN55024
Radio Compliance
FCC Part 22, 24
RSS132, 133
EN301 489-1
EN301 489-7
EN301 511
AS/ACIF S042.1, S042.3
Safety Compliance
UL/cUL 60950-1 2nd Ed
IEC60950-1 2nd Ed am.1
Network Compliance
PTCRB

Chapter 1 –Product Description and Specifications
MultiModem Cell User Guide 11
1Actual performance speeds may be affected by a variety of attributes such as cell tower distance, data loads,
position of the sun, wind speeds, packet sizes, etc.
2UL Listed @ 40°C, limited by power supply. UL Certification does not apply or extend to an ambient above 40°C
and has not been evaluated by UL for ambient greater that 40°C. "UL has evaluated this device for use in ordinary
locations only. Installation in a vehicle or other outdoor locations has not been evaluated by UL. UL Certification
does not apply or extend to use in vehicles or outdoor applications or in ambient above 40°C."
MTCBA-C1 and MTCBA-C1-U
Category
Description
General
Performance
CDMA2000 1xRTT
Frequency Bands
Dual band 800/1900 MHz
Speed
Packet Data1
Up to 153.6 Kbps forward and reverse
Circuit Switched Data
IS-95A, IS-95B up to 14.4K bps forward and reverse
SMS
SMS
Text & PDU, Point-to-Point, Cell broadcast
Connectors
Power Connector
2.5mm miniature (screw-on)
RF Antenna Connector
50 ohm SMA (female connector)
RS232 Connector
DE9
USB Connector
Type B
Power Requirements
Voltage
9 V to 32 V DC (serial only)
5.0 V (USB input voltage supplied by USB connector)
Physical Description
Dimensions (L x W x H)
2.35 in x 4.11 in x 1.07 in
8.6 cm x 12.5 cm x 2.7 cm
Weight (Device only)
0.4 lbs
0.175 Kg
Environment
Operating Temperature2
(verified tested temp)
-40° to 185° F
-40° to 85° C
Storage Temperature
-40°to 185° F
-40° to 85° C
Humidity
Relative humidity 20%-90% noncondensing
Certifications, Compliance
EMC Compliance
FCC Part 15
Radio Compliance
FCC Part 22, 24
RSS132, 133
Safety Compliance
UL/cUL 60950-1 2nd Ed
IEC60950-1 2nd Ed am.1
Network Compliance
PTCRB

Chapter 1 –Product Description and Specifications
12 MultiModem Cell User Guide
1Actual performance speeds may be affected by a variety of attributes such as cell tower distance, data loads,
position of the sun, wind speeds, packet sizes, etc.
2UL Listed @ 40°C, limited by power supply. UL Certification does not apply or extend to an ambient above 40°C
and has not been evaluated by UL for ambient greater that 40°C. "UL has evaluated this device for use in ordinary
locations only. Installation in a vehicle or other outdoor locations has not been evaluated by UL. UL Certification
does not apply or extend to use in vehicles or outdoor applications or in ambient above 40°C."
MTCBA-G2 and MTCBA-G2-U
Category
Description
General
Performance
GPRS: Class 10
Frequency Bands
Quad Band
850/900/1800/1900 MHz
Speed
Packet Data1
Up to 85.6 Kbps, coding schemes CS1 to CS4
Circuit Switched Data
Up to 14.4 Kbps non-transparent
SMS
SMS
Text & PDU, Point-to-Point, Cell broadcast
Connectors
Power Connector
2.5mm miniature (screw-on)
RF Antenna Connector
50 ohm SMA (female connector)
RS232 Connector
DE9
SIM Connector
Standard 1.8 and 3 V SIM receptacle
USB Connector
Type B
Power Requirements
Voltage
9 V to 32 V DC (serial only)
5.0 V (USB input voltage supplied by USB connector)
Physical Description
Dimensions (L x W x H)
2.35 in x 4.11 in x 1.07 in
8.6 cm x 12.5 cm x 2.7 cm
Weight (Device only)
0.4 lbs
0.175 Kg
Environment
Operating Temperature2
(verified tested temp)
-40°to 185° F
-40° to 85° C
Storage Temperature
-40°to 185° F
-40° to 85° C
Humidity
Relative humidity 20%-90% noncondensing
Certifications, Compliance
EMC Compliance
FCC Part 15
EN55022
EN55024
Radio Compliance
FCC Part 22, 24
RSS132, 133
EN301 489-1
EN301 489-7
EN301 511
AS/ACIF S042.1, S042.3
Safety Compliance
UL/cUL 60950-1 2nd Ed
IEC60950-1 2nd Ed am.1
Network Compliance
PTCRB, GCF

Chapter 1 –Product Description and Specifications
MultiModem Cell User Guide 13
1Actual performance speeds may be affected by a variety of attributes such as cell tower distance, data loads,
position of the sun, wind speeds, packet sizes, etc.
2UL Listed @ 40°C, limited by power supply. UL Certification does not apply or extend to an ambient above 40°C
and has not been evaluated by UL for ambient greater that 40°C. "UL has evaluated this device for use in ordinary
locations only. Installation in a vehicle or other outdoor locations has not been evaluated by UL. UL Certification
does not apply or extend to use in vehicles or outdoor applications or in ambient above 40°C."
MTCBA-H5 and MTCBA-H5-U
Category
Description
General
Performance
HSPA+
Frequency Bands
Penta band
850/900/1700/1900/2100 MHz
Speed
Packet Data1
HSDPA data service of up to 21.0 Mbps
HSUPA data service of up to 5.76 Mbps
SMS
SMS
Text & PDU, Point-to-Point, Cell broadcast
Connectors
Power Connector
2.5mm miniature (screw-on)
RF Antenna Connector
50 ohm SMA (female connector)
RS232 Connector
DE9
SIM Connector
Standard 1.8 and 3 V SIM receptacle
USB Connector
Type B
Power Requirements
Voltage
9 V to 32 V DC (serial only)
5.0 V (USB input voltage supplied by USB connector)
Physical Description
Dimensions (L x W x H)
2.35 in x 4.11 in x 1.07 in
8.6 cm x 12.5 cm x 2.7 cm
Weight (Device only)
0.4 lbs
0.175 Kg
Environment
Operating Temperature2
(verified tested temp)
-22°to 167° F
-30° to 75° C
Storage Temperature
-40°to 185° F
-40° to 85° C
Humidity
Relative humidity 20%-90% noncondensing
Certifications, Compliance
EMC Compliance
FCC Part 15
EN55022
EN55024
Radio Compliance
FCC Part 22, 24
RSS132, 133
EN301 489-1
EN301 489-7
EN301 489-24
Safety Compliance
UL/cUL 60950-1 2nd Ed
IEC60950-1 2nd Ed am.1
Network Compliance
PTCRB, GCF

Chapter 1 –Product Description and Specifications
14 MultiModem Cell User Guide
1Actual performance speeds may be affected by a variety of attributes such as cell tower distance, data loads,
position of the sun, wind speeds, packet sizes, etc.
2UL Listed @ 40°C, limited by power supply. UL Certification does not apply or extend to an ambient above 40°C
and has not been evaluated by UL for ambient greater that 40°C. "UL has evaluated this device for use in ordinary
locations only. Installation in a vehicle or other outdoor locations has not been evaluated by UL. UL Certification
does not apply or extend to use in vehicles or outdoor applications or in ambient above 40°C."
Power MTCBA-H5
GSM
Sleep
Typical
Maximum
Peak TX
Peak Rst (Inrush
Current)
9 volts
0.032A,
0.296W
0.062A,
0.57W
0.155A, 1.43W
1.24A
1.60A
20 volts
0.020A,
0.400W
0.034A,
0.68W
0.076A, 1.52W
0.555A
1.645A
32 volts
0.014A,
0.448W
0.025A,
1.25W
0.051A, 1.63W
0.363A
1.48A
HSDPA
Sleep
Typical
Maximum
Peak TX
Peak Rst (Inrush
Current)
9 volts
0.032A, 0.296W
0.119A, 1.10W
0.261A, 2.39W
0.332A
1.60A
20 volts
0.020A, 0.400W
0.059A, 1.18W
0.128A, 2.56W
0.196A
1.645A
32 volts
0.014A, 0.448W
0.039A, 1.25W
0.085A, 2.72W
0.152A
1.480A
Power MTCBA-H5-U
GSM
Typical
Maximum
Peak TX
Peak Rst (Inrush
Current)
5 volts
0.088A, 0.44W
0.250A, 1.21W
0.62A
1.25A
HSDPA
Typical
Maximum
Peak TX
Peak Rst (Inrush
Current)
5 volts
0.187A, 0.91W
0.478A, 2.22W
0.62A
1.25A
Multi-Tech Systems, Inc recommends that the customer incorporate a 10% buffer into their power source when
determining product load.

Chapter 1 –Product Description and Specifications
MultiModem Cell User Guide 15
9-Pin Fem-D Sub Serial Connector
The following table explains the pin functions.
DE9 Pin Assignment
Female Connector
DE9
Pins
RS232 Signals
DCE
RS422 Full
Duplex Signals
Signal
Direction
Pin 1
Data Carrier Detected (DCD)
RxD-
Out
Pin 2
RXD
RxD+
Out
Pin 3
TXD
TxD+
In
Pin 4
Data Terminal Ready (DTR)
TxD-
In
Pin 5
Ground
Ground
N/A
Pin 6
Data Set Ready (DSR)
Ready To Send -
(RTS-)
Out –RS232
In –RS422
Pin 7
Ready To Send (RTS)
Ready To Send +
(RTS+)
In
Pin 8
Clear To Send (CTS)
Clear To Send +
(CTS+)
Out
Pin 9
Ring Indicator (RI)
Clear To Send -
(CTS-)
Out
Note: The DSR signal on pin 6 is always asserted by the modem.
4-Position DIP Switch
Note: Not supported on H5 models.
Switch Position
Up/On
Down/Off
Description
Position 1
Off
DTR Reset Disabled
Not supported on H5 models
Position 1
On
DTR Reset Enabled
Not supported on H5 models
Positions 2-4
Only valid for serial builds
Position 2
Off
No TXD Termination
Position 2
On
TXD Diff Pair Terminated
Position 3
Off
No RTS Termination
Position 3
On
RTS Diff Pair Terminated
Position 4
Off
RS232 Mode
Position 4
On
RS422 Mode
Note: Positions 2 and 3 should only be used in RS422 Mode. Enabling TXD/RTS termination may be required to
avoid errors at high bit rates or long cable lengths. Multi-Tech Systems tested the cable up to 1,000 feet , but the
maximum may be more with termination enabled and lower data rates.

16 MultiModem Cell User Guide
Activating Your Wireless Account
Refer to the wireless account Activation Notices included with your unit. Choose the notice for your wireless
network provider and follow the directions to activate your account.
Phone Numbers for the Wireless Modem
Every wireless modem has a unique phone number. Your wireless service provider may give you this number or it
might be included on the SIM care. Wireless provider implementations may vary.
Inserting the SIM Card into Holder (if required)
The MultiModem requires the power supply connection to begin operation. It also requires a SIM card (Subscriber
Identity Module) to operate on a GSM network. To install the SIM, do the following:
1. Using a small Phillips screwdriver, remove the two SIM door screws and remove the SIM door.
Note: When changing a SIM, ensure that power is removed from the unit.
2. Insert the SIM card into the card holder. The above graphic illustrates the correct SIM card orientation.
3. Verify that the SIM card fits into the holder properly and then replace the cover.

Chapter 2 –Activating and Installing
MultiModem Cell User Guide 17
Connecting the Antenna, Serial or USB Cable, Power, Optional
Power or Voice Cable
MTCBA-H5 models do not support voice. The Voice jack is not included on MTCBA-H5 models.
1. Connect a suitable antenna to the ANT connector on the right side of the unit. See antenna specifications in Chapter
1.
2. If you are connecting to a serial interface, connect a serial cable to the RS232 connector on the back of the unit and
connect the other end of the serial cable to the serial port on your PC.
If you are connecting to an USB interface, connect an USB cable to the USB connector on the back of the unit and the
other end to the USB port on your PC.
3. Set the 4-position DIP Switch on the back of the unit to the configuration of your unit.
Note: DIP switch not supported on H5 models.
Switch Position
Up/On
Down/Off
Description
Position 1
Off
DTR Reset Disabled
Position 1
On
DTR Reset Enabled
Positions 2-4
Only valid for serial builds
Position 2
Off
No TXD Terminiation
Position 2
On
TXD Diff Pair Terminated
Position 3
Off
No RTS Termination
Position 3
On
RTS Diff Pair Terminated
Position 4
Off
RS232 Mode
Position 4
On
RS422 Mode
Note: Positions 2 and 3 should only be used in RS422 Mode. Enabling TXD/RTS termination may be required
to avoid errors at high bit rates or long cable lengths. The cable is tested up to 1,000 feet but the maximum
may be more with termination enable and lower data rates.
4. If you are connecting a hand set to the unit for voice communication, connect an RJ11 cable from the hand set to the
VOICE connector on the back of the unit. To adjust the volume of the hand set, refer to the appropriate AT
Command Reference Guide.
5. Depending on the power source, connect either the power supply module with the appropriate blade or the optional
DC power cable. If you are using the power supply module, remove the protective shipping cover. Attach the
appropriate interchangeable blade piece to the power supply module.
Screw-on the power lead from the power supply module to the power connection on the modem. Now, plug the
power supply into your power source.

Chapter 2 –Activating and Installing
18 MultiModem Cell User Guide
For Optional Direct DC Power
●Screw-on the DC power cable to the power connector on the modem.
●Then attach the two wires at the other end of the DC power cable to a DC fuse/terminal block.
●Connect the red wire to the "+" (positive) terminal and the black wire to the "–" (negative) terminal. Be sure
the GND connection is correct.
Warning: Over-voltage protection is provided on the device. To ensure complete protection, you may want to
add additional filtering to the DC input.
Note: For automotive application: according to the type of application, you can use permanent “+” or key-
switched “+” source. Connect the power supply to its source (for example, in a mobile situation, to the vehicle’s
DC fuse/terminal block).
Optional Mounting
The Cell can be panel mounted with screws spaced according to the measurement shown.
Flat Surface Mounting
The Cell can be panel mounted with screws spaced according to the measurements showing.
Note: Use either #4 or #6 pan head screws for all four mount locations.

Chapter 2 –Activating and Installing
MultiModem Cell User Guide 19
Installing USB CDC-ACM Virtual COM Port
Note: To install the USB driver for the MTCBA-H5-U model, download the guide USB Driver Installation Guide,
part number S000553. Follow the instructions in that guide to install the USB driver.
Windows XP (SP3 or greater), VISTA, 2003 Server, Windows 7 (32-bit or 64-bit), Linux (Kernel 2.6.xx using CDC-
ACM module) are supported.
For Linux, a 2.6.28 kernel or greater is required. The standard CDC-ACM driver works.
Note: Some versions of Windows have an issue with their CDC-ACM driver (Usbser.sys). If you are having
connection problems (file download, web pages not loading) your version of Usbser.sys must be updated.
Microsoft article 925681 documents this issue and provides a fix.
After installing the virtual com port, the correct modem driver may be installed to the com port (for the USB
versions, make sure the USB port of the Cell is connected with a SIM card before the modem driver is installed).
Installing Virtual COM Port
1. Download the driver for your modem from the Multi-Tech website.
2. For USB versions of the Cell, ensure that the USB cable is connected to your PC.
3. For GSM versions of the Cell, ensure that the SIM card is installed prior to powering up.
4. If any Windows Install Wizard pops up, close or cancel the wizard.
5. Windows may pop-up a User Account Control window. Select the YES button to continue with the driver
installation.
6. Click Next to start the driver pre-installation.

Chapter 2 –Activating and Installing
20 MultiModem Cell User Guide
7. An information page opens, then the process completes. Click Finish.
8. Install the modem driver as described in the section that follows.
Installing the Modem Driver
1. From the Windows Start button, select Control Panel.
2. The Control Panel opens. Double-click Phone and Modem Options. Then click on the Modems tab.