This manual is copyrighted. All rights are reserved. No portion of this document may be copied,
photocopied, reproduced, translated or reduced to any electronic medium or machine form
without prior consent in writing from Enfora, Inc.
The information in this document is subject to change without notice and does not represent a
commitment on the part of Enfora, Inc.
All product names mentioned in this document are the trademark of their respective owners.
Enfora, Inc.
661 E. 18
th
Street
Plano, Texas 75074-5601
USA
Phone: (972)633-4400
Fax:: (972)633-4444
Technical Support
For problems stemming from your network access, contact your GPRS carrier service.
For technical support and customer service dealing with the modem itself, contact Enfora, inc. by
any of the following methods:
Web site: www.enfora.com
Phone: 972-633-2373
Email: techsupport@enfora.com
Before you contact Technical Support, please have your modem’s Equipment Identifier (EID)
number ready for the Technical Support representative.
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1.0 Introduction
This document includes a feature overview, product specifications, mechanical information, and basic user
information for Enfora’s Enabler-G, an embedded OEM GPRS Class C modem. This low cost device is
packaged in a small form-factor to facilitate a variety of embedded applications. It offers features and
functions similar to Enfora’s Enabler-A and Spider-O CDPD modems.
2.0 General Description
The Enabler-G is a self-contained General Packet Radio Service (GPRS) Class-C modem containing all
functionality, to include RF and digital control, required to perform wireless data transfer over a GPRS
network. Enabler-G has been designed to work as an embedded component in lap top PCs and other
mobile platforms as well as handheld or portable host devices.
3.0 Safety and Regulatory Compliance
This unit complies with specifications for a GPRS Class-C full-duplex modems with a maximum transmit
output power of 0.6 Watts. This Enabler-G complies with US CFR 47, Part 24 Subpart E and Part 15 of the
FCC Rules and Regulations and Canada RSS-188. Detailed Regulatory and safety statements are provided
following Section 10.0 of this Manual.
Basic safety precautions and guidelines for such devices must be observed, such as:
• Do not expose the device to fire, open flames, or extreme thermal conditions.
• Do not spill liquids on the device.
• Do not disassemble or attempt to modify the device without he express written consent of Enfora.
• Do not attempt to repair the device
The Enabler-G complies with the FCC RF emission and hazard requirements when installed and operated
within the constraints and limitations specified in this manual. Enfora is not liable for injury to personnel
4.0 GPRS Background
General Packet Radio Services (GPRS) is a packet based wireless communication service that can deliver
variable data rates as a function of assigned timeslots and maintain continuous connection to the Internet
for mobile subscribers on Global System for Mobile (GSM) Network worldwide. Since GPRS is based on
GSM communication, it can be single, dual or triple band depending on the area of the service, it will
complement existing services such as circuit switched cellular phone connections and the Short Message
Service (SMS).
In general, GPRS packet-based service should cost users less than circuit-switched services, since their
communication channels are being used on a shared-use, as-packets-are-needed basis rather than dedicated
only to one user at a time. Once GPRS becomes available, mobile users of a virtual private network (VPN)
will be able to access their private networks continuously rather than through a dial-up connection. GPRS
will also complement Bluetooth, a standard for replacing wired connections between devices with wireless
radio connections. In addition to the Internet Protocol (IP), GPRS supports X.25, a packet-based protocol
that is used mainly in Europe and Asia Pacific. GPRS is an evolutionary step toward Enhanced Data GSM
Environment (EDGE) and Universal Mobile Telephone Service (UMTS).
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The key benefit with GPRS is the ability to sustain a permanent data connection allowing a free flow of
information for the mobile user. The data through put in GPRS will be significantly higher due to the
ability of GPRS mobile terminals to transmit and receive more information than standard GSM terminals.
The GSM communication system, in general, is standardized to operate in multiple bands, primarily, the
900 MHz band which is assigned PGSM, EGSM, RGSM for short, 1800 MHz band which is assigned DCS
and the 1900 MHz band which is assigned PCS. Both the GSM and DCS band are used globally for mobile
voice communication. The PCS 1900 is used in North, Central and South America.
• Enabler-G Model No. GSM0102 900/1800 MHz
• Enabler-G Model No. GSM0103 900/1900 MHz
Although the GSM digital voice standard has existed for well over a decade, it wasn’t until recently that the
demand for wireless data capability has increased. GPRS is a protocol within the GSM standard which was
developed to address the need for data only transmission. Although the GSM voice protocol does support
data transmission, it is limited in data rate due to overhead within the voice protocol. What the GRPS
allows is a faster data rate that is adaptive as well as being packet based.
5.0 Mechanical Characteristics
Basic package dimensions and form factor information is provided in the following figures.
5.1 Connectors
Control Connector
The connector used to interface to the host is a 40-position socket header that is 2 rows by 20 columns at 1
mm pitch, part number Samtec CLM-120-02-F-D.
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RF Connector
The modem’s RF connector is a MMCX jack.
Antennas
The user will supply the antenna. The antenna must have a nominal impedance of 50 Ohms. The VSWR
must be less than 2.0:1. System antenna gain should be 0 to +2 dBi for optimum performance
40 Pin Connector Assignments
Connector pin assignments are shown in the following table.
Table 1
DESCRIPTIONI/OREFPIN #REFI/ODESCRIPTION
Ground - GND 1 2 GND - Ground
UART receive I RX 3 4 TX O UART transmit
UART Data carrier
detect
UART Data set ready O DSR 7 8 DTR I UART data terminal
UART Clear to send O CTS 9 10 Ring O UART ring indicator
General Purpose I/O I/O GPIO1 11 12 GPIO2 I/O General Purpose I/O
General Purpose I/O I/O GPIO3 13 14 GPIO4 I/O General Purpose I/O
General Purpose I/O I/O GPIO5 15 16 GPIO6 I/O General Purpose I/O
General Purpose I/O I/O GPIO7 17 18 GPIO8 I/O General Purpose I/O
3.8 volt supply - VCC 19 20 VCC - 3.8 volt supply
3.8 volt supply - VCC 21 22 VCC - 3.8 volt supply
∗ Reserved
∗ Reserved
∗ Reserved
Transmitter is active O TX IND 29 30 ADC_2 I Analog voltage
Wake command I RemoteOn 31 32 Reserved
∗ Reserved
∗ Reserved
∗ Reserved
Ground - GND 39 40 GND - Ground
O DCD 5 6 RTS I UART ready to send
ready
∗
∗
∗
∗
∗
∗
Reserved 23 24 Reserved
Reserved 25 26 Reserved
Reserved 27 28 ADC_1 I Analog voltage
The modem operates from an input voltage range of 3.15 Vdc to 4.50 Vdc. Input voltage may be directly
applied from a 3.6V Li-Ion or Nickel Metal Hydride battery. The digital input and output signals are 3.3
Vdc tolerant.
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