Novatel Wireless MLG0208 GSM/GPRS/GPS Module User Manual Enabler II G Assiste GPS Integration Guide

Novatel Wireless Inc. GSM/GPRS/GPS Module Enabler II G Assiste GPS Integration Guide

User Manual

Enfora Enabler II-G Assisted GPS
Integration Guide
Version 0.1
Enfora L.P.
661 E. 18th Street Plano Texas 75074
www enfora com
Enfora Enabler II-G Assisted GPS
Modem Integration Guide
MLG????PB001MAN i Version Preliminary – 3/31/2006
Document Title: Enfora Enabler II-G Assisted GPS Integration Guide
Version: 0.1
Date: 03/31/06
Status: PRELIMINARY
Document Control ID: MLG0208PB001
General
All efforts have been made to ensure the accuracy of material provided in this document at
the time of release. However, the items described in this document are subject to continuous
development and improvement. All specifications are subject to change without notice and
do not represent a commitment on the part of Enfora L.P. Enfora L.P. will not be responsible
for any loss or damages incurred related to the use of information contained in this document.
This product is not intended for use in life support appliances, devices or systems where a
malfunction of the product can reasonably be expected to result in personal injury. Enfora
L.P. customers using, integrating, and/or selling this product for use in such applications do
so at their own risk and agree to fully indemnify Enfora L.P. for any damages resulting from
illegal use or resale.
Copyright
Complying with all applicable copyright laws is the responsibility of the user. Without limiting
the rights under copyright, no part of this document may be reproduced, stored in or
introduced into a retrieval system, or transmitted in any form or by any means (electronic,
mechanical, photocopying, recording or otherwise), or for any purpose, without the express
written permission of Enfora L.P.
Enfora may have patents, patent applications, trademarks, copyrights or other intellectual
property rights covering subject matter in this document. Except as expressly provided in any
written license agreement from Enfora, the furnishing of this document does not give you any
license to these patents, trademarks, copyrights or other intellectual property.
©2002, 2003, 2004, 2005 Enfora L.P. All rights reserved.
Enabler and Spider are either registered trademarks or trademarks of Enfora L.P. in the
United States.
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1.0 Safety Precautions................................................................................................................. 4
1.1 Important Safety Information .............................................................................................. 4
2.0 Regulatory Compliance FCC................................................................................................. 4
2.1 Integration Considerations and Installation Requirements................................................. 4
2.2 Disclaimer........................................................................................................................... 7
3.0 Manual Overview ................................................................................................................... 8
3.1 Revision History.................................................................................................................. 8
3.2 Reference Documents........................................................................................................ 9
4.0 Introduction .......................................................................................................................... 11
4.1 Product Overview ............................................................................................................. 11
4.2 Key Features of the Assisted GPS Module...................................................................... 11
4.3 Providing Multi-Band Operation........................................................................................ 12
4.4 Wireless Data Application Possibilities............................................................................. 12
4.5 GSM/GPRS System Overview ......................................................................................... 13
Assisted GPS System Overview ................................................................................................ 14
4.6 Summary of Features for the Enabler II-G A-GPS Module.............................................. 16
5.0 Technical Specifications ...................................................................................................... 19
5.1 Enabler II-G A-GPS Module Block Diagram..................................................................... 19
5.2 Detailed Product Specifications........................................................................................ 21
5.3 Operating Power............................................................................................................... 23
6.0 Physical Interfaces............................................................................................................... 25
6.1 Physical Layout ................................................................................................................ 26
6.2 Enabler II-G A-GPS Module Mounting Reference............................................................ 29
6.3 Module Pin Orientation Reference...................................................................................... 30
6.3 Connectors ....................................................................................................................... 30
6.4 Circuit Protection ..............................................................................................................32
Circuit Protection .......................................................................... Error! Bookmark not defined.
6.5 Control Connector Signal Descriptions and Functions..................................................... 34
6.6 Subscriber Identity Module (SIM) Carrier......................................................................... 49
7.0 GSM/GPRS Modes of Operation......................................................................................... 51
7.1 Enabling the Transmission Modes for the GSM/GPRS Services..................................... 51
7.2 Voice Communication....................................................................................................... 51
7.3 Circuit-Switched Data....................................................................................................... 51
7.4 SMS: Short Message Services......................................................................................... 52
8.0 GPS Modes of Operation..................................................................................................... 53
8.1 Autonomous......................................................................................................................53
8.2 Mobile Assisted ................................................................................................................ 53
8.3 Enhanced Autonomous .................................................................................................... 53
9.0 SIM Operation...................................................................................................................... 55
9.1 Provisioning the SIM......................................................................................................... 55
9.2 GSM Services Supported by the Enfora Enabler II-G A-GPS Module............................. 55
9.3 GPRS Services Supported by the Enfora Enabler II-G A-GPS Module........................... 55
9.4 Selecting the GSM Modes of Operation........................................................................... 55
10.0 Software Interface ............................................................................................................ 56
10.1 Software Interface ......................................................................................................... 56
10.2 Format for the AT Commands....................................................................................... 57
10.3 Enfora AT Command Set .............................................................................................. 58
10.4 Enfora Packet Application Programming Interface ....................................................... 58
10.5 Enfora Modem Control Library Architecture.................................................................. 60
11.0 Setup and Initialization ..................................................................................................... 63
11.1 General Setup ............................................................................................................... 63
11.2 GSM/SMS Examples..................................................................................................... 68
11.3 GPRS Packet Examples ............................................................................................... 68
11.4 GPS Examples.............................................................................................................. 68
12.0 Integration and Testing..................................................................................................... 70
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12.1 Integrating the Enfora Enabler II-G A-GPS Module...................................................... 70
13.0 APPENDIX A - Warranty Repair and Return Policy......................................................... 73
14.0 APPENDIX B - Regulations and Compliance................................................................... 75
14.1 GCF Approval (Formerly FTA)...................................................................................... 75
14.2 Electromagnetic Compatibility (EMC) and Safety Requirements ................................. 75
14.3 EMC/Safety Requirements for the USA........................................................................ 75
14.4 Human Exposure Compliance Statement..................................................................... 76
14.5 Compliance with FCC Regulations ............................................................................... 76
14.6 Unintentional Radiators, Part 15 ................................................................................... 77
14.7 Intentional Radiators, Part 24........................................................................................ 77
14.8 Instructions to the Original Equipment Manufacturer (OEM) ........................................ 78
14.9 Nationally Recognized Testing Laboratory (NRTL) Approval ....................................... 82
14.10 EMC/Safety Requirements for the Countries of the European Union (EU)............... 83
14.11 EMC/Safety Requirements for Other Countries......................................................... 83
15.0 APPENDIX C - Glossary and Acronyms .......................................................................... 84
16.0 APPENDIX D – Tables and Figures................................................................................. 86
17.0 APPENDIX E - Contacting Enfora.................................................................................... 89
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1.0 Safety Precautions
1.1 Important Safety Information
The following information applies to the devices described in this manual. Always observe all
standard and accepted safety precautions and guidelines when handling any electrical device.
• Save this manual: it contains important safety information and operating instructions.
• Do not expose the Enfora Enabler II-G A-GPS product to open flames.
• Ensure that liquids do not spill into the devices.
• Do not attempt to disassemble the product: Doing so will void the warranty. With the
exception of the Subscriber Identification Module (SIM), this product does not contain
consumer-serviceable components.
2.0 Regulatory Compliance FCC
2.1 Integration Considerations and Installation Requirements
The Enabler II-G A-GPS modem is designed for use in a variety of host units, "enabling" the host
platform to perform wireless data communications and GPS location. However, there are certain
criteria relative to integrating the modem into a host platform such as a PC, laptop, handheld or
PocketPC®, monitor and control unit, etc. that must be considered to ensure continued compliance
with FCC compliance requirements.
• In order to use the Enabler II-G A-GPS modem without additional FCC certification approvals,
the installation must meet the following conditions:
• For the transmitter to meet the MPE categorical exclusion requirements of
2.1091, the ERP must be less than 1.5 watts for personnel separation distance of
at least 20 cm (7.9 in). Therefore, the maximum antenna gain cannot exceed
+3.3dBi. If greater than 1.5 watts exists, then additional testing and FCC
approval is required.
• If used in a "portable" application such as a handheld device with the antenna
less than 20 cm (7.9 in.) from the human body when the device is operating, then
the integrator is responsible for passing additional "as installed" testing:
• SAR (Specific Absorption Rate) testing, with results submitted to the FCC for
approval prior to selling the integrated unit. If unable to meet SAR
requirements, then the host unit must be restricted to "mobile" use (see
below).
• Unintentional emissions, FCC Part 15; results do not have to be submitted to
the FCC unless requested, although the test provides substantiation for
required labeling (see below).
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• If used in a "mobile" application where the antenna is normally separated at least
20 cm (7.9 in) from the human body during device operation, then an appropriate
warning label must be placed on the host unit adjacent to the antenna. The label
should contain a statement such as the following:
WARNING
RF exposure. Keep at least 20 cm
(7.9 in) separation distance from
the antenna and the human body.
• Host unit user manuals and other documentation must also include appropriate
caution and warning statements and information.
• If the FCCID for the modem is not visible when installed in the host platform, then a
permanently attached or marked label must be displayed on the host unit referring to
the enclosed modem.
For example, the label should contain wording such as:
Contains GSM/GPRS modem transmitter module
FCC ID: MIVMLG0208
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2)
This device must accept any interference received,
including interference that may cause undesired
operation.
OR
Contains FCC ID: MIVMLG0208
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2)
This device must accept any interference received,
including interference that may cause undesired
operation.
• Any antenna used with the modem must be approved by the FCC or as a Class II
Permissive Change (including MPEL or SAR data as applicable). The "professional
installation" provision of FCC Part 15.203 does not apply.
• The transmitter and antenna must not be co-located or operating in conjunction with
any other antenna or transmitter. Violation of this would allow a user to plug another
transmitter in to the product and potentially create an RF exposure condition.
WARNING
The transmitter and antenna must not be collocated
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or operating in conjunction with any
other antenna or transmitter. Failure to observe
this warning could produce an RF exposure
condition.
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2.2 Disclaimer
The information and instructions contained within this publication comply with all FCC,
GCF, PTCRB, RTTE, IMEI and other applicable codes that are in effect at the time of
publication. Enfora disclaims all responsibility for any act or omissions, or for breach of
law, code or regulation, including local or state codes, performed by a third party.
Enfora strongly recommends that all installations, hookups, transmissions, etc., be
performed by persons who are experienced in the fields of radio frequency technologies.
Enfora acknowledges that the installation, setup and transmission guidelines contained
within this publication are guidelines, and that each installation may have variables
outside of the guidelines contained herein. Said variables must be taken into
consideration when installing or using the product, and Enfora shall not be responsible for
installations or transmissions that fall outside of the parameters set forth in this
publication.
Enfora shall not be liable for consequential or incidental damages, injury to any person or
property, anticipated or lost profits, loss of time, or other losses incurred by Customer or
any third party in connection with the installation of the Products or Customer's failure to
comply with the information and instructions contained herein.
!
The Enabler II-G A-GPS platform is designed with
features to support a robust connection. There are
instances where the module performance is beyond
the control of the intended design. Integrated designs
that require 24 by 7 operation must implement power
control via an external circuit or by implementing power
management as specified within this design guide.
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3.0 Manual Overview
This document describes the hardware interface of the Enabler II-G Assisted GPS (A-
GPS) modem. The purpose of this document is to define the electrical, mechanical
and software interfaces while providing detailed technical information in order to
streamline the process of hardware and system integration.
3.1 Revision History
Date Rev Author Description
10/12/05 1.00 Matt Glover Initial Release
01/26/06 1.01 Eric King FCC ID added, Updated Mechanical drawings, update Block
Diagram to include GPS chipset, updated serial UART
architecture for GPS support, and added new GPS spec for
module.
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3.2 Reference Documents
3.2.1 Enfora Enabler II-G Product Documentation
Overview
• GSM2000PB001MAN - Enfora Integrated GPS Module Overview
Manuals
• GSM0102PB001MAN - Enfora GSM/GPRS OEM Module AT Command Set
Reference
• GSM0102PB002MAN - Enfora GSM-GPRS Family UDP-API Reference
• GSM0000PB006MAN - Enfora GSM-GPRS Family Modem Control Library
Reference
• GSM2000PB001MAN - Enfora GSM-GPRS-Assisted GPS AT Command Set
Application Notes
• GSM0000AN001 - Enabler-G PPP Configuration for Windows 98
• GSM0000AN002 - Enabler-G PPP Configuration for Windows 2000
• GSM0000AN003 - Enabler-G Data Circuit Switched Call Configuration and Use
• GSM0000AN004 - Enabler-G SMS Configuration and Use
• GSM0000AN005 - Enabler-G Automated Network Connection Configuration and
Use
• GSM0000AN006 - Enabler-G Module Status Query
• GSM0000AN007 - Enabler-G Status Reporting
• GSM0000AN008 - Enabler-G PPP Configuration for Windows XP
• GSM0000AN009 - Dynamic IP Assignment Support
• GSM0000AN010 - Enabler-G PPP Configuration for PocketPC 2002
• GSM0000AN011 - PAD Configuration and Use
• GSM0000AN012 - Network Transparency Configuration for PAD
• GSM0000AN013 - Enabler-G Sleep Mode Configuration and Use
• GSM0000AN014 - Anytime PPP API Access
• GSM0000AN015 - Event Monitor and Reporting Overview
• GSM0000AN016 - How to Send SMS Messages to an E-Mail Address
• GSM0000AN017 - SMTP Mail Access via TCP PAD
• GSM0000AN018 - USNO NTP Network Time Service TCP PAD
Technical Notes
• GSM0000TN001 - Enabler-G Firmware Upgrade
• GSM0000TN002 - Enabler-G PPP Negotiation Sequence
• GSM0000TN006 - UDP Wakeup Message Header Decoding
• GSM0000TN007 - Enabler-G 3-Wire Serial Interface Requirements
• GSM0000TN008 - Enabler Power Supply Requirements
• GSM0000TN009 - Server Application Design Considerations for Dynamic IP
White Papers
• GSM0000WP001 - Enabler-G Differentiation Features
• GSM0000WP002 - Using Enfora UDP API Versus CMUX Protocol
3.2.2 GSM and PCS Device Specifications
• GSM 11.10-1 (GSM 850, 900, and 1800 MHz devices)
• PCS 11.10 (PCS 1900 MHz devices)
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3.2.3 US Government
3.2.4 Federal Communications Commission (FCC)
Internet: http://www.fcc.gov/
• FCC Rules, Part 24
• 47 CFR Subpart E--Broadband PCS
• 47 CFR § 24.52, sections 1.1307(b), 2.1091, and 2.1093
• FCC Rules, Part 22 for GSM 850
• FCC Rules, Part 15
• FCC Rules, Part 2
• Subpart J--Equipment Authorization Procedures
• Section 2.925
3.2.5 FCC Office of Engineering and Technology (OET)
Internet: http://www.fcc.gov.oet/
• Bulletin Number 65 "Evaluating Compliance with FCC Guidelines for Human
Exposure to Radio Frequency Electromagnetic Fields"
• Supplement C "Additional Information for Evaluating Compliance of Mobile and
Portable Devices with FCC Limits for Exposure to Radio Frequency
Emissions"
3.2.6 Environmental Regulations
• National Environmental Policy Act (NEPA) of 1969 (Part 1, Subpart 1)
3.2.7 Mechanical Specifications
• ASTM D999
• ASTM D775
• IEC 68-2-27
• Bellcore Gr-63-CORE
• ETS 300 019-1-1 Class 1.2
• ETS 300 019-1-2 Class 2.1
• ETS 300 019-1-3 Class 3.1
3.2.8 RF and EMI Specifications
• ETSI Standards
• EN 61000-4-6
• EN 61000-4-3
• GSM 11.10, Section 12.2
• EN 55022 Class B
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4.0 Introduction
4.1 Product Overview
Enfora Enabler II-G A-GPS modem is a compact, wireless OEM module that utilizes the
Global System for Mobile Communications (GSM) and GPRS (General Packet Radio
Services) international communications standard to provide two-way wireless capabilities
via GSM services. The modem also includes an integrated GPS receiver that can
provide Assisted GPS functionality for enhanced GPS location performance. The Enfora
Enabler II-G A-GPS module is a fully Type-approved GSM/GPRS device, enabling
application-specific, two-way communication and control along with GPS location
capability. The Enfora Enabler II-G A-GPS module is available in both triple and quad
band versions.
The small size of the Enfora Enabler II-G A-GPS module allows it to be integrated easily
into the application and packaging.
4.2 Key Features of the Assisted GPS Module
The following table summarizes the main features of the Enfora Enabler II-G Radio
Module.
Data input/output interface 60 position
Primary serial port V.24 protocol, 3V levels
Secondary serial port V.24 protocol, 3V levels
Voice Supports three vocoder modes: full-rate (FR), and
enhanced full-rate (EFR), and half-rate (HR)
Antenna Interface ultra Miniature Coaxial Interconnect
Command protocol Enfora Packet API, GSM AT command set
Subscriber Identification Module
(SIM) Optional 3 V mini-SIM carrier and interface on
board
Interface
Optional remote SIM Accessible via the 60-pin connector
Electrical power 3.3 to 4.5 Vdc Power Peak currents and average
power dissipation Refer to the Operating Power table in the
Technical Specifications for peak currents and
average power dissipation for various modes of
operation.
Frequency bands EGSM 900, DCS 1800, and PCS 1900 capability.
Quad band version adds GSM 850 capability.
Radio Features
GSM/GPRS features supported Provides for all GSM/GPRS authentication,
encryption, and frequency hopping algorithms.
GPRS Coding Schemes CS1-CS4 supported.
Multi-Slot Class 10 (4RX/2TX, Max 5 Slots).
Regulatory Agency approvals • GCF Type Approval
• PTCRB Type Approval
• FCC Certification (Part 24)
• RTTE
• CE (European Community Certification)
• IC (Industry Canada) Approval
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GSM/GPRS
Functionality • Mobile-originated and mobile-terminated SMS messages: up to 140 bytes or
up to 160 GSM 7-bit ASCII characters.
• Reception of Cell Broadcast Message
• SMS Receipt acknowledgement
• Circuit Switched Data (Transparent & Non-transparent up to 9.6 Kbps)
• Voice (EFR, FR, HR)
• Supports Unstructured Supplementary Service Data (USSD)
• Multi-Slot Class 10 Supported (4Rx/2TX), (5 Slot Max)
• PBCCH/PCCCH Supported
GPS
Functionality 12 Channel GPS receiver
Embedded Global Locate Assisted GPS functionality
SIM 3 V Mini-Subscriber Identity Module (SIM) compatible
Table 1 - Enabler II-G Key Features
4.3 Providing Multi-Band Operation
The Enfora Enabler II-G A-GPS module provides multi-band operation, with the operating
frequency selectable by AT Command:
• The 1900 MHz Enfora Enabler II-G module is available for integration and
deployment for use worldwide, with 1900 MHz support primarily in North America and
regions where the 1900 MHz Personal Communication Services (PCS) band is
allocated. The GSM0308 Quad-Band module also supports GSM 850 for use in
North America.
• The 900/1800 MHz Enfora Enabler II-G modules are available for deployment in Europe and
the rest of the world.
4.4 Wireless Data Application Possibilities
A variety of applications can use the Enfora Enabler II-G A-GPS module for
transmitting/receiving data/voice and providing integrated GPS location capability, such
as:
• Automated Meter Reading (AMR)
• Point of Sale Applications
• E-mail and Internet access
• Automated Vehicle Location (AVL)
• Telematics
• Telemetry
• Wireless Security
• Location-Based Services (LBS)
• Proximity detection
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4.5 GSM/GPRS System Overview
The Enfora Enabler G-II module is shown in Figure 1 is designed for easy integration with other
components and packaging by leveraging the existing GSM networks. Compare the Enfora
Enabler G II to systems that require construction, operation, maintenance, and expense of a
private network.
Figure 1 - PAD Architecture
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Figure 2 – UDP API Architecture
Assisted GPS System Overview
The Enfora Enabler II-G A-GPS module provides a compelling, integrated module approach to
providing Assisted GPS, and GPRS packet data solutions in a single module. This
implementation provides various alternatives from simple autonomous GPS processing to
Assisted GPS solutions. The integration of the GPS chipset inside the Enabler modem reduces
the complexity of system integration when location aware solutions are being developed. This
allows for smaller sizes, faster updates, and lower overall system cost. The following diagram
demonstrates the Assisted GPS architecture using Enfora Enabler II-G A-GPS module. For
additional detail regarding the various GPS alternatives available, see GSM2000PB001MAN -
Enfora Integrated GPS Module Overview.
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Current GPS Data
GPS Data
GSM/GPRS Network
GSM/GPRS Tower
WAN
(Frame Relay , ATM, etc...)
Internet
AGPS Server
Step 1
Device obtains as much data
as possible from current view
and sends to AGPS server over
the network.
Step 3
AGPS server processes
limited data and creates
updated file for remote use.
Data Connection (SUPL)
Step 2
The limited GPS data is
processed and sent over the
wireless network.
Step 4
Updated GPS data is sent
back to the remote device.
Step 5
Updated data is available for
the remote device.
Assisted GPS
Overview
Figure 3 - Assisted GPS Architecture
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4.6 Summary of Features for the Enabler II-G A-GPS Module
The following summarizes the main features of the Enfora Enabler II-G A-GPS Module.
Mechanical
Dimensions...................................46.3 mm x 30.2 mm x 3.1 mm
Weight........................................... < 10g
Packet Data Transfer:
Protocol GPRS Release 97 and 99 (SMG 31)
Coding Schemes CS1-CS4
Multi-Slot Capability: (Demonstrated @MS10) MS10 (4RX/2TX) (Max 5 Slots)
Packet Channel Support...............PBCCH/PCCCH
Circuit Switched Data Transfer:
V110 .............................................300 bps/1200 bps/2400 bps/4800 bps/9600
bps/14,400 bps
Non-Transparent...........................300 bps/1200 bps/2400 bps/4800 bps/9600
bps/14,400 bps
Short Message Services:
GSM SMS.....................................MO, MT, CB, Text and PDU Modes
GPRS SMS...................................MO, MT, CB, Text and PDU Modes
Voice Capability:
Speech Codec ..............................EFR, FR, HR, AMR
GPS Capability:
Receiver........................................12 Channel
Output...........................................NMEA 183 data
Modes Supported .........................Autonomous, Mobile Based, Enhanced Autonomous
GSM/GPRS Radio Performance Multi-Band:
GSM0308 Radio Frequencies ......850 (GSM), 900 (EGSM), 1800 MHz (DCS), or 1900
MHz (PCS)
Sensitivity......................................-106 dBm (Typical GPRS CS1)
850 & 900 MHz Transmit Power...Class 4 (2 W)
1800 & 1900 MHz Transmit Power Class 1 (1 W)
GPS Radio Performance Multi-Band:
GPS Radio Frequencies...............1.5 GHz
Sensitivity......................................-150 dBm (Typical)
System Requirements:
Host Interface ...............................Serial Interface
DC Voltage ...................................3.3 to 4.5 Vdc
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Application Interface:
Host Protocol ................................Status API and AT Commands
Internal Protocols..........................UDP stack, TCP/IP stack, PPP, PAD, and CMUX
Physical Interface .........................(2) Serial 16550 – Default rate 115,200 baud
Audio Interface..............................1 Headset w/Mic & Bias, 1 Mic w/Bias, 1 Earphone
SIM Interface:
Remote SIM Option 3-Volt SIM Capability
Environmental:
Operating Temperature ...............-30 °C to 70 °C (Fully Spec Compliant)
Design Goal..................-40 °C to 85 °C
Storage Temperature....................-40 °C to 85 °C
Humidity........................................5 to 95% non-condensing
EMC:
Emissions .....................................FCC Parts 15 & 24, Class B
GSM 11.10, Section 12.2
EN 55022 Class B
FCC Part 22 for GSM 850
Susceptibility.................................Per ETSI ETS 300 342-1
EN 61000-4-3
ESD 4 kV contact, 8 kV air discharge
EN 61000-4-6
Operating Power (TYPICAL):
GSM Operation
GSM 850/900 (1 RX/1 TX, full power)…………….254 mA average, 1.6 A peak
DCS 1800 (1 RX/1 TX, full power)……………212 mA average, 1.2 A peak
PCS 1900 (1 RX/1 TX, full power) ……………200 mA average, 1.4 A peak
Idle ................................................………….. < 5 mA
Shutdown......................................……………≈ 10 uA
GPRS Operation Power
EGSM 850/900 (4 RX/1 TX, full power)……………290 mA average, 1.6 A peak
EGSM 850/900 (2 RX/2 TX, full power)…………...422 mA average, 1.6 A peak
DCS 1800 (4 RX/1 TX, full power)…………………244 mA average, 1.2 A peak
DCS 1800 (2 RX/2 TX, full power)…………….350 mA average, 1.2 A peak
PCS 1900 (4 RX/1 TX, full power) …………….232 mA average, 1.4 A peak
PCS 1900 (2 RX/2 TX, full power) …………….325 mA average, 1.4 A peak
Idle ................................................……………< 5 mA
Shutdown......................................…………….≈ 10 uA
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GSM Transmit Power
1800/1900 MHz ............................GSM Power Class 1 (30 dBm ± 2 dB @ antenna
connection)
850/900 MHz ................................GSM Power Class 4 (33 dBm ± 2 dB @ antenna
connection)
GSM/GPRS Receiver Sensitivity (Typical)
1800/1900 MHz ............................-106 dBm, GPRS Coding Scheme 1 (CS1)
850/900 MHz ................................-106 dBm, GPRS Coding Scheme 1 (CS1)
GPS Operation Power
Tracking........................................ ……………. 325 mA average, 1.4 A peak
Acquisition ....................................……………. 325 mA average, 1.4 A peak
Idle ................................................………… < 5 mA
Shutdown …………… .≈ 10 uA
GPS Receiver Sensitivity (Typical)
1.5 GHz.........................................-150 dBm, Tracking
1.5 GHz.........................................-160 dBm, Acquisition
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Modem Integration Guide
MGL0208PB001 19 Version: Preliminary – 3/31/2006
5.0 Technical Specifications
5.1 Enabler II-G A-GPS Module Block Diagram
Analog
Baseband /
Power Mgnt
Digital
Baseband
CPU
GPS
BB
SRAM /
FLASH
GPIO
SIM
Audio
RF Interface
Serial
Interfac
GPS
Ant.
Interfac
GPRS
RF
GPS
RF
TCXCO
RF
Interfac
Quad-BAND PA
Power
GPRS
Ant.
Interfac
Enfora Enabler II-G Assisted GPS
Modem Integration Guide
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Figure 4 Enabler II-G A-GPS Module Block Diagram
Enfora Enabler II-G Assisted GPS
Modem Integration Guide
MGL0208PB001 21 Version: Preliminary – 3/31/2006
5.2 Detailed Product Specifications
5.2.1 Physical Dimensions and Weight
Size (L x W x H)
46.3 mm x 30.2 mm x 3.1 mm
Weight
(Less than 10 g.)
5.2.2 Climatic: Operational
Operating temperature -30°C to +70°C
(-40°C to +85°C Design Goal)
Relative humidity
5 - 95%
Solar radiation Not Applicable
Air pressure (altitude) 70 kPa to 106 kPa (-400 m to 3000 m)
5.2.3 Climatic: Storage and
ransportation
Duration 24 months
Ambient temperature -40C to +85C
Relative humidity 5% to 95%, non condensing (at 40C)
Thermal shock -50C to +23C, +70C to +23C; < 5 min
Altitude -400 m to 15,000 m
5.2.4 Mechanical: Operational
Operational vibration, sinusoidal
3.0 mm disp, 2 to 9 Hz; 1 m/s2 , 9 to 350 Hz
Operational vibration, random
0.1 m2 /s3 , 2 to 200 Hz
5.2.5 Mechanical: Storage and
ransportation
Transportation vibration, packaged ASTM D999
Drop, packaged ASTM D775 method A, 10 drops
Shock, un-packaged 150 m/s2 , 11 ms, half-sine per IEC 68-2-27
Drop, un-packaged 4-inch drop per Bellcore GR-63-CORE
5.2.6 Mechanical: Proposed Standards
Transportation ETSI Standard ETS 300 019-1-2 Class 2.3
Transportation
Operational ETSI Standard ETS 300 019-1-3 Class 3.1
Operational
Storage ETSI Standard ETS 300 019-1-1 Class 1.2
Storage
5.2.7 Electromagnetic Emissions
Radiated spurious FCC Part 24 / Part 15 Class \ B
GSM 11.10 Section 12.2
EN 55022 Class B
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Modem Integration Guide
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5.2.8 Electromagnetic Immunity
5.2.9 (per ETSI ETS 300 342-1)
Radio Frequency (RF) Electromagnetic Field 3 V/m 800 – 1000 MHz; 1 kHz 80%
EN 61000-4-3
Electrostatic discharge (ESD) Contact discharge to coupling planes: ±2 kV,
±4 kV
Air discharge to coupling planes: ±2 kV, ±4 kV,
±8 kV
RF common mode 3 V rms (Level 2) 150 kHz – 80 MHz
EN 61000-4-6
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Modem Integration Guide
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5.3 Operating Power
The Enfora Enabler II-G A-GPS module requires an input voltage of 3.3 Vdc to 4.5
Vdc.
5.3.1 GSM Operating Power
Enfora Enabler II-G (@ 3.76
Volts) Typical Current (mAmps) Typical Peak Current (Amps)
GSM 850
EGSM 900
GSM
1 TX 1 RX
1 RX
Idle
254 mA
104 mA
< 5 mA
1.6 A @ 32.5 dBm
DCS 1800
GSM
1 TX 1 RX
1 RX
Idle
212 mA
104 mA
< 5 mA
1.2 A @ 29.5 dBm
PCS 1900
GSM
1 TX 1 RX
1 RX
Idle
200 mA
104 mA
< 5 mA
1.4 A @ 29.5 dBm
5.3.2 GPRS Operating Power
Enfora Enabler II-G (@ 3.76
Volts) Typical Current (mAmps) Typical Peak Current (Amps)
GSM 850
EGSM 900
GPRS
1 TX /1RX
2 TX/ 2RX
1 TX/ 2RX
1 TX/ 3RX
1 TX/ 4RX
1 RX
Idle
240 mA
422 mA
253 mA
270 mA
290 mA
104 mA
< 5 mA
1.6 A @ 32.5 dBm
DCS 1800
GPRS
1 TX /1RX
2 TX/ 2RX
1 TX/ 2RX
1 TX/ 3RX
1 TX/ 4RX
1 RX
Idle
196 mA
350 mA
207 mA
224 mA
244 mA
104 mA
< 5 mA
1.2 A @ 29.5 dBm
GPRS
1 TX /1RX
2 TX/ 2RX
1 TX/ 2RX
1 TX/ 3RX
1 TX/ 4RX
1 RX
Idle
183 mA
325 mA
195 mA
212 mA
232 mA
104 mA
< 5 mA
1.4 A @ 29.5 dBm
5.3.3 GSM Transmit Power
Enfora Enabler II-G module Power Class Transmit Power
1900 MHz
1800 MHz GSM Power Class 1 1-W conducted power maximum (30
dBm +/- 2 dB), measured at the
antenna port
850 MHz
900 MHz GSM Power Class 4 2-W conducted power
maximum (33 dBm +/- 2 dB),
measured at the antenna port
5.3.4 GSM Receiver Sensitivity
Enfora Enabler II-G Assisted GPS
Modem Integration Guide
MGL0208PB001 24 Version: Preliminary – 3/31/2006
Enfora Enabler II-G A-GPS
module Sensitivity Mode
1900 MHz
1800 MHz -106 dBm (typical) GPRS Coding Scheme 1 (CS1)
900 MHz
850 MHz -106 dBm (typical)
GPRS Coding Scheme 1 (CS1)
5.3.5 GPS Operating Power
Enfora Enabler II-G (@ 3.76
Volts) Typical Current (mAmps) Typical Peak Current (Amps)
Tracking
Acquisition
Sleep
Shutdown
240 mA
422 mA
253 mA
~ 10 uA
5.3.6 GPS Receiver Sensitivity
Enfora Enabler II-G A-GPS
module Sensitivity Mode
1500 MHz –106 dBm (typ) Autonomous Mode
5.3.7 Enabler Remote On (Pin 24)
Low is modem OFF. High is modem ON.
Radio Power/Reset Parameter/Conditions MIN TYP MAX UNIT
VIL Input Voltage - Low -0.5 0.9 Vdc
VIH Input Voltage - High 2.0 3.4 Vdc
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6.0 Physical Interfaces
Enfora Enabler II-G Assisted GPS
Modem Integration Guide
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6.1 Physical Layout
Figure 5 Enabler II-G Package Dimensions (without integrated SIM carrier)
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Modem Integration Guide
MGL0208PB001 27 Version: Preliminary – 3/31/2006
Figure 6 Enabler II-G Package Dimensions (with integrated SIM carrier)
• Use 46.3 X 30.2 X 3.1 as overall module dimension
• Mated 60-pin I/O connector stack height is 2.0 MM
• If mounting screw is used, a nylon washer is recommended at board interface. A
maximum diameter of 4.00 should be used for all fastening hardware.
• Antenna direct connect solder pad is 1.02 mm wide X 2.54 mm high.
• Antenna ground pads are 2.03 mm wide X 2.54 mm high.
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Modem Integration Guide
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Modem Integration Guide
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6.2 Enabler II-G A-GPS Module Mounting Reference
Figure 7 Provides Enabler II-G A-GPS module vertical mounting information.
Figure 7 Vertical Enabler II-G Mounting
The Enabler II-G A-GPS module provides mounting tabs that can be soldered to a
PCB. These tabs provide circuit grounding for the module and their use is
recommended. Figure 8 provides mounting tab reference for PCB integration.
Figure 8 Enabler II-G Mounting Tabs
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Modem Integration Guide
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6.3 Module Pin Orientation Reference
59 . . . . . . 25 23 21 19 17 15 13 11 9 7 5 3 1
60 . . . . . . 26 24 22 20 18 16 14 12 10 8 6 4 2
Figure 9 Module Pin Orientations
6.3 Connectors
6.3.1
6.3.2 Enabler II-G A-GPS I/O Control Connector
The connector used to interface to the host is a 60-pin, SMT, Dual Row, Vertical
Stacking: .50MM (.020") Pitch Plug; Molex part number 53729-0604.
6.3.3 PCB Integration I/O Control Connector
The mating connector for a board mount application is a 60-pin, SMT, Dual Row,
Vertical Stacking: .50MM (.020") Pitch Receptacle; Molex part number 52974-0604
or 52974-0608.
6.3.4 I/O Signal Connector on the Enfora Enabler II-G A-GPS Module
Pin
Pin
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Modem Integration Guide
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The Enfora Enabler II-G A-GPS module communicates with the carrier board of the
application via the 60-pin I/O signal connector. The following table describes the pin
assignments for the connector, sorted by pin number.
6.3.5 I/O Connector Pin Assignments
The following table shows the pin assignments for the input/output connector. The pin
assignments are shown in order of functionality.
Table 2 - Enabler II-G A-GPS Pin Assignments
PIN
# FUNCTION Serial
Pin I/O ENABLER II-G A-
GPS Description/Comments
1 Power Input P Batt/Vcc Electrical power input to Enabler II-G A-GPS module.
2 Power Input P Batt/Vcc Electrical power input to Enabler II-G A-GPS module.
3 Power Input P Batt/Vcc Electrical power input to Enabler II-G A-GPS module.
4 Power Input P Batt/Vcc Electrical power input to Enabler II-G A-GPS module.
5 Power Input P Batt/Vcc Electrical power input to Enabler II-G A-GPS module.
6 Power Input P Batt/Vcc Electrical power input to Enabler II-G A-GPS module.
7 Ground R GND Electrical power return for digital and analog grounds.
8 Ground R GND Electrical power return for digital and analog grounds.
9 Handset Speaker (-) O INTERNAL_SPK(-) Handset speaker output (negative).
10 Power Input P Batt/Vcc Electrical power input to Enabler II-G A-GPS module.
11 Ground R GND Electrical power return for digital and analog grounds.
12 Power Input P Batt/Vcc Electrical power input to Enabler II-G A-GPS module.
13 Handset Speaker (+) O INTERNAL_SPK(+) Handset speaker output (positive).
14 GPIO-1 I/O GPIO-1 General-purpose Input/Output.
15 Ground R GND Electrical power return for digital and analog grounds.
16 Ground R GND Electrical power return for digital and analog grounds.
17 Microphone Bias O VMIC Microphone Bias.
18 GPO-5 O GPO-5 General-purpose Output.
19 Ground R GND Electrical power return for digital and analog grounds.
20 Reserved Reserved for future use.
21 Handset Microphone (-) I INT_MIC(-) Handset microphone input (negative).
22 Radio Power/Reset I RADIO_PWR/RST Radio power/reset.
23 Ground R GND Electrical power return for digital and analog grounds.
24 Power Control Signal I PWR_CTL_SIGNAL Power Control Signal.
25 Handset Microphone (+) I INT_MIC(+) Handset microphone input (positive).
26 Reserved Reserved for future use.
27 GPIO-3 I/O GPIO-3 General-purpose Input/Output.
28 GPIO-2 I/O GPIO-2 General-purpose Input/Output.
29 Reserved Reserved for future use.
30 GPIO-4 I/O GPIO-4 GPIO/MCSI TX.
31 Reserved Reserved for future use.
32 GPIO-6 I/O GPIO-6 GPIO/MCSI RX.
33 Ground R GND Electrical power return for digital and analog grounds.
34 GPIO-7 I/O GPIO-7 GPIO/MCSI CLK.
35 DAC O DAC Digital-to-Analog Output.
0.3 to 2.0 Vdc minimum range
36 RTC Power I VBAK Modem backup power for real-time clock.
37 Reserved Reserved for future use.
38 Headset Earphone (+) O HEADSET_SPK(+) Headset Earphone (positive).
39 GPIO-8 I/O GPIO-8 GPIO/MCSI FSNC.
40 Headset Microphone (-) I HEADSET_MIC(-) Headset Microphone (negative).
41 Ground 5 R GND Electrical power return for digital and analog grounds.
42 Headset Microphone (+) I HEADSET_MIC(+) Headset Microphone (positive).
43 Serial Receive Data 2 O RXD_RADIO Serial Data to Host.
44 Ground R GND Electrical power return for digital and analog grounds.
45 Data Set Ready 6 O DSR_RADIO DSR Signal to Host.
46 ADC2 I ADC2 Analog-to-Digital Converter Input 2.
0 – 1.75 Vdc range. 1.709 mV resolution. 10 bit.
47 Data Carrier Detect 1 O DCD DCD Signal.
48 SIM Clock O SIM_CLK SIM Clock.
49 Ring Indicator 9 O RI RING Indicator.
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Modem Integration Guide
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I=Input into Enabler; O=Output from Enabler; P=Power Input to Enabler; R=Power
Return from Enabler; I/O=Input/Output into/from Enabler
NOTE: There is a functionality change on Pin 18 from the GSM0108-xx. Pin 18 is
now General Purpose Output. In prior modules, Pin 18 has been a General Purpose
I/O pin.
Reserved for future use
NO CONNECT if on-board SIM holder is used
6.4 Circuit Protection
Other than the basic low level ESD protection within the module’s integrated circuits
(typically 2000 V), the Enabler II-G A-GPS module does not have any protection
against ESD events or other excursions that exceed the specified operating
parameters.
The only exception is that the remote SIM lines on the main I/O connector do have
additional ESD protection that should handle standard human-model contact ESD
events.
Generally, ESD protection (typically TVS/Transzorb devices) should be added to all
signals that leave the host board. This includes VBAT/VCC.
Series resistors (typically 47 Ω) can also be added in series with data lines to limit the
peak current during a voltage excursion.
!
Caution – It is the Integrator’s responsibility to protect
the Enabler II-G A-GPS module from electrical
disturbances and excursions, which exceed the
specified operating parameters.
6.5 Antenna
A custom quad-band antenna can be attached via the on-board connector or soldered
directly to the modem. Each antenna direct connect solder pad is 1.02 x 2.54 MM. A
passive GPS antenna can also be used to connect to the on-board connector or
soldered directly to the modem.
50 Ground R GND Electrical power return for digital and analog grounds.
51 Serial Transmit Data 3 I TXD_RADIO Serial Data from Host.
52 SIM I/O I/O SIM_IO SIM I/O Data.
53 Request To Send 7 I RTS_RADIO RTS Signal from Host.
54 SIM Reset O SIM_RST SIM Reset.
55 Clear To Send 8 O CTS_Radio CTS Signal to Host.
56 ADC1 I ADC1 Analog-to-Digital Converter Input 1.
0 – 1.75 Vdc range. 1.709 mV resolution. 10 bit.
57 Data Terminal Ready 4 I DTR_RADIO DTR Signal to Host.
58 SIM Power O SIM_VCC SIM Power.
59 Ground R GND Electrical power return for digital and analog grounds.
60 Ground R GND Electrical power return for digital and analog grounds.
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Modem Integration Guide
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However, if the GPS antenna is more than 10 cm away from the module (a very likely
scenario), one should consider using an active GPS antenna. An active antenna has
an integrated low noise amplifier (LNA). Active antennas need power supplied to
them. The power is usually routed the coax cable.
One should also take care in selecting the active antenna. The LNA gain maybe too
large and saturate the input to the GPS receiver. A LNA gain of about 15 dB should be
sufficient to drive coax cables of 5 meters. A gain greater than 15dB may damage the
GPS device. Please check the design to see if you need to provide external power to
the active antenna.
6.5.1 Antenna Solder Pads
Pads are provided to solder a cable or antenna directly to the Enabler II-G A-GPS
board.
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Modem Integration Guide
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6.5.2 RF Connector
The Enabler II-G A-GPS module utilizes an ultra Miniature Coaxial Interconnect from
Sunridge (MCB-ST-00T) as the on-board antenna connector. A compatible mating
connector is the Sunridge MCB2-xx-xx-xxx-x series component. The cable
assembly is made to order. Maximum stack height of cable connector and PCB
connector is 2.0 mm.
6.5.3 GPS Antenna Connector
The Enabler II-G A-GPS module utilizes an ultra Miniature Coaxial Interconnect from
Sunridge (MCB-ST-00T) as the on-board GPS antenna connector. A compatible
mating connector is the Sunridge MCB2-xx-xx-xxx-x series component. The cable
assembly is made to order. Maximum stack height of cable connector and PCB
connector is 2.0 mm.
6.6 Control Connector Signal Descriptions and Functions
6.6.1 Input Power
The Enfora Enabler II-G A-GPS module uses a single voltage source of VCC=+3.3V
to 4.5V. (The exact values of the uplink currents are shown in Tables5.3.1 GSM
Operating Power and 5.3.2 GPRS Operating Power). The VCC lines (pins 1 to 6)
should be connected on the application board.
!
The uplink burst will cause strong ripple on the voltage
lines and should be effectively filtered. It is recommended
that 1000 to 2000 μF of capacitance be placed as close to
the modem I/O connector as possible.
It should be noted that the input voltage level should not
drop below the minimum voltage rating under any
circumstances, especially during the uplink burst period.
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Modem Integration Guide
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6.6.2 Ring Indicate
The Enabler II-G A-GPS module is capable of using the Ring line to discern the type
of incoming call. The indicator can be monitored via a hardware line available on
the 60-pin I/O signal connector. The Ring Indicator pin is #49.
The function of the Ring line depends on the type of the call received.
When the module is receiving a voice call, the Ring line goes low for 1 second and
high for another 2 seconds. Every 3 seconds the ring string is generated and sent
over the Receive (Data Out) (Rx) line. If there is a call in progress and call waiting is
activated for a connected handset or hands free device, the Ring pin switches to
ground in order to generate acoustic signals that indicate the waiting call.
When a Fax or data call is received, Ring goes low and will remain low. Every 3
seconds a ring string is generated and sent over the Receive (Data Out) (Rx) line.
An incoming SMS can be indicated by an Unsolicited Result Code (URC) which
causes the Ring line to go low for 1 second only. Using the AT+CNMI command,
the Enabler II-G A-GPS module can be configured to send or not to send URCs
upon the receipt of SMS. See Enfora GSM/GPRS OEM Module AT Command Set
Reference - GSM0102PB001MAN.
Figure 10 Ring Indicate Timing
6.6.3
1 second
URC
Ring
1 second 2 seconds 1 second 2 seconds
RING Strin
g
RING Strin
g
Ring
3 seconds
RING Strin
g
RING Strin
g
Ring
3 seconds
RING Strin
g
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6.6.4 Radio Power/Reset (Pin 22)
A pulse on this Active-High input resets/restarts the module. This input has a
“weak pull-down” resistor internal to the module and can be left open-circuit or
grounded if it is not going to be used. To initiate a reset, provide a high-pulse
of at least 50 ms duration.
PARAMETER PARAMETER / CONDITIONS MIN TYP MAX UNIT
VIL Input Voltage – Low or float 0 0.3 x
VBAT Vdc
VIH Input Voltage – High 0.7 x
VBAT VBAT Vdc
IPD Internal Pull-Down Resistor -40 -2 μA
Pulse Duration High Pulse Duration 50 mS
6.6.5 Using the Power Control Signal
6.6.6
Figure 11 shows a typical connection to the MLG0208 module in a machine-to-machine application using the
external PWR_CTL_SIGNAL solution, where there is no external processor controlling the I/O, serial, or power
on/off states. RTC deep sleep functions will NOT function since the PWR_CTL_SIGNAL pin is tied low, the
processor will never stay in a “RTC Sleep” mode. To reset the module, power (BATT) must be cycled. VBAK
must be connected to an uninterruptible power source if RTC time is to be retained.
I/O
Serial 1
GSM0108
BATT
PWR_CTL_SIGNAL
RADIO_PWR/RST
Machine to Machine configuration, using
external PWR_CTL_SIGNAL solution
VBAKup
Float
Any State
Any State
Figure 11 External Power Control Signal (no external processor)
Enfora Enabler II-G Assisted GPS
Modem Integration Guide
MGL0208PB001 37 Version: Preliminary – 3/31/2006
Figure 12 shows a variation of the connection in Figure 11 External Power Control Signal (no external processor) by
using an external RC circuit to generate a pulse that will allow the processor to enter the RTC deep sleep modes.
This will keep the PWR_CTL_SIGNAL signal low for at least 50ms during startup. To reset the module, power
(BATT) must be cycled, and power must be removed long enough for the RC to discharge.
I/O
Serial 1
GSM0108
BATT
PWR_CTL_SIGNAL
RADIO_PWR/RST
Machine to Machine configuration, using
external PWON with RC solution
VBAKup
Float
Any State
Any State
PWON 50ms RC
VBAT
1uF
475 k
Schmitt
Trigger
Figure 12 External Power Control Signal (using external RC circuit)
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Figure 13 shows a typical connection from an external processor to the MLG0208 module, using the external
PWR_CTL_SIGNAL solution. The MLG0208 can be powered on by using the PWR_CTL_SIGNAL signal. When
using PWR_CTL_SIGNAL, the I/O or serial lines can be at any voltage state desired. It is suggested that the I/O
and serial lines be tri-stated or set low when the MLG208 is shutdown for an extended period of time to conserve
power.
I/O
Serial 1
GSM0108
BATT
PWR_CTL_SIGNAL
RADIO_PWR/RST
Embeded processor configuration, using external
PWR_CTL_SIGNAL solution
VBAKup
CPU
buffer
cntrl
Figure 13 Power Control Signal (using external processor)
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Modem Integration Guide
MGL0208PB001 39 Version: Preliminary – 3/31/2006
Figure 14 shows a typical power on sequence for the CPU to MLG0208 interface. Note that RADIO_PWR/RST is
not used, and the I/O and serial voltage levels are not a concern.
BATT
RADIO_PWR/RST
PWR_CTL_SIGNAL
System State
D.C.
D.C. 50ms
Power On Sequence
I/O level
don't care
Serial level
don't care
Figure 14 Typical Power On Sequence (using external processor)
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MGL0208PB001 40 Version: Preliminary – 3/31/2006
Figure 15 shows a Reset, or power down sequence using the RADIO_PWR/RST signal with the CPU to MLG0208
interface. Note that the I/O and serial lines MUST be either tri-stated or pulled to GND. If this is not done, it cannot
be guaranteed that RADIO_PWR/RST will reset the MLG0208.
BATT
PWR_CTL
_SIGNAL
System
State
I/O level
Serial
level
don't care
RADIO_PW
R/RST
Power Down / RESET Sequence
don't care
250ms
LOW OR TRI-STATE don't care
don't care LOW OR TRI-STATE don't care
Figure 15 Power Down/Reset (using external processor)
PARAMETER PARAMETER / CONDITIONS MIN TYP MAX UNIT
VIL Input Voltage – Low or float 0 0.3 x
VBAT Vdc
VIH Input Voltage – High 0.7 x
VBAT VBAT Vdc
IPU Internal Pull-Up Resistor -20 -2 μA
ON Pulse
Duration 100 mS
OFF Pulse
Duration Programmable 1000 1000
0 mS
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6.6.7 Using VBAK
VBAK is a backup voltage that can maintain the RTC clock and alarm functions. If VBAK is not
present in the system (intentionally or not) and RADIO_PWR/RST is active low, the RTC clock
may still be powered if leakage voltage exists on VCC. Otherwise the RTC clock will loose power
and be reset when VCC is restored.
VBAK had been tested in the above scenarios and does not contribute to leakage. It will properly
provide backup power to the RTC clock.
6.6.8 Serial Interface for UART and GPS
The modem provides a standard 16550 UART serial interface to the host. The data
interface operates at CMOS level. The Enabler II-G A-GPS module is designed to be
used like a DCE device or can also mux the serial port to share the port between serial
data and GPS NMEA information. Below are descriptions of the various serial
architectures used to interface with the GPS chipset integrated into the module.
This serial interface data may contain 7 or 8 data bits, 1 or 2 stop bits, even/odd/no
parity bits. The baud rate may be adjusted to 75, 150, 300, 1200, 2400, 4800,
9600,19200, 38400, 57600, or 115200 bits per second.
Default settings are 8 data, 1 stop, no parity, and 115200 baud. DTR may be used to
force the modem into AT command mode from online data mode (See AT Command
Document, command AT&D). RTS and CTS may be used for hardware handshaking.
DSR is always active (connected to ground) while the modem is on. RING may be
used to alert the host to a variety of incoming calls.
For a minimal implementation, connect RxData and TxData to the COM port serial data
lines, connect DTR and RTS to GND.
The electrical characteristics for the I/O lines are the same as the General Purposes
Input/Output (GPIO) lines.
6.6.9 Dedicated Serial Interface
This architecture provides dedicated serial ports for exclusive processing of GPS
and network data. One port would be dedicated to communication with the wireless
module and the other would be dedicated to the GPS receiver. Integrators would
choose the serial interface(s) that they would like to use and process data
accordingly. An example diagram illustrating the architecture is shown below:
PARAMETER PARAMETER / CONDITIONS MIN TYP MAX UNIT
Backup Voltage (Real-Time-Clock)
VBACKUP Backup Voltage for Real-Time-Clock 2.7 3.0 4.5 Vdc
IBACKUP Input Current (VBACKUP = 3.2 V, VBAT = 0 V,
No Load on GPIO or Serial Port) 3.0 6.0 μAdc
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Enabler
Uart 1
Uart 0
GPS
RECEIVER
Tx, Rx, &
Gnd
Tx, Rx, CTS,
RTS, DTR, DCD,
DTR, Ring, &
Gnd
Enabler II-G Pins
Pins: 43 (Rx), 45 (DSR), 47
(DCD), 51 (Tx), 53 (RTS), 55
(CTS), 57 (DTR, GND)
Enabler II-G Pins
Pins: 29 (Rx), 31 (Tx),
GND
Figure 16 Enabler II-G A-GPS Module Serial Interface with Dedicated Serial Port
and GPS Port
The one tradeoff with this architecture is the loss of the modem debug port. This configuration
does allow one to debug issues with the GPRS modem in the development phase.
6.6.9.1 Single Serial Port with Debug port
The implementation of a single serial port would utilize a multiplexing architecture
combining both GPS and network data over a single PPP connection. The other
serial port would remain a debug port, as it exists today in the current module
architecture. The integrator would have to write the supporting application/driver
that would reside on the target modem to handle the muxing of the network data
and the GPS data. An example diagram illustrating the architecture is shown below:
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Enabler
Uart 1
Uart 0
Debug
Tx, Rx, &
Gnd
Tx, Rx, CTS,
RTS, DTR, DCD,
DTR, Ring, &
Gnd
Enabler II-G Pins
Pins: 43 (Rx), 45 (DSR), 47
(DCD), 51 (Tx), 53 (RTS), 55
(CTS), 57 (DTR, GND)
Enabler II-G Pins
Pins: 29 (Rx), 31 (Tx),
GND
GPS
Stream
Muxed Interface
between Enabler
Modem and GPS NMEA
messages
.
Figure 17 Enabler II-G A-GPS Module Serial Interface with Mux Serial Port
and Debug
The tradeoff with this architecture is the complexity of the modem between serial data and the
GPS information. The software complexity increases, but one gains the debug port to assist in the
development process.
6.6.9.2 Single Serial Port with Debug port
The implementation of a single serial port would utilize a multiplexing architecture
combining both GPS and network data over a single PPP connection. The other
serial port would remain a debug port, as it exists today in the current module
architecture. The integrator would have to write the supporting application/driver
that would reside on the target modem to handle the muxing of the network data
and the GPS data. An example diagram illustrating the architecture is shown below:
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Enabler
Uart 1
Uart 0
Debug /
GPS
Tx, Rx, &
Gnd
Tx, Rx, CTS,
RTS, DTR, DCD,
DTR, Ring, &
Gnd
Enabler II-G Pins
Pins: 43 (Rx), 45 (DSR), 47
(DCD), 51 (Tx), 53 (RTS), 55
(CTS), 57 (DTR, GND)
Enabler II-G Pins
Pins: 29 (Rx), 31 (Tx),
GND
GPS
Stream
Muxed Interface
between Enabler
Modem and GPS NMEA
messages
.
Figure 18 Enabler II-G A-GPS Module Serial Interface with Mux Serial Port
and Debug
The tradeoff with this architecture is the complexity of the modem between serial data and the
GPS information. The software complexity increases, but one gains the debug port to assist in the
development process.
6.6.10 Analog-To-Digital Input
Eight general-purpose signals are provided. Each of these signals may be selected as
inputs or outputs. They may be used independently as a user-specified function, or
may be used to provide modem control and status signals. Several examples of
modem control signals are: power shutdown command, register/deregister on network
command, and transmitter disable. Several examples of modem status signals are:
registration status and ready-for-power-down status to be used with power shutdown
command signal.
I/O Lines Parameter/Conditions MIN TYP MAX UNIT
VIL Input Voltage – Low -0.5 0.9 Vdc
VIH Input Voltage – High 2.0 3.4 Vdc
VOL Output Voltage – Low 0.64 Vdc
VOH Output Voltage – High 2.4 3.0 Vdc
IIL / IIH Input Leakage Current -1 1 μA
IOL / IOH Rated Output Current 2 mA
6.6.11 Analog-To-Digital Input
Analog-To-Digital Input Parameter/Conditions MIN TYP MAX UNIT
ADCBRES ADC Binary Resolution 10 Bits
ADCREF ADC Reference Voltage 1.75 Vdc
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VADC ADC Range 0 1.75 Vdc
ZADC ADC Input Impedance 100 kΩ
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6.6.12 Digital-To-Analog Output
Digital-To-Analog Output Parameter/Conditions MIN TYP MAX UNIT
DACBRES DAC Binary Resolution 10 Bits
TS Settling Time 10 μS
VOMAX Output Voltage with Code
Maximum 2.0 2.2 2.4 Vdc
VOMIN Output Voltage with Code
Minimum
0.18 0.24 0.3 Vdc
6.6.13 Handset Microphone Input
Parameter Conditions MIN TYP MAX UNIT
Maximum Input Range –
Mic(+) to Mic(-) Inputs 3 dBm0 (Max. digital
sample amplitude when PGA
gain set to 0 dB)
32.5 mVrms
Nominal Ref. Level –
Mic(+) to Mic(-) -10 dBm0
Differential Input Resistance –
Mic(+) to Mic(-) 100 kΩ
Microphone Pre-Amplifier Gain 25.6 dB
Bias Voltage on Mic(+) 2.0 or 2.5 V 2.0 2.5 Vdc
Mic Bias Current Capability 0 0.5 mA
6.6.14 Handset Speaker Output
Parameter Conditions MIN TYP MAX UNIT
Maximum Swing –
Ear(+) to Ear(-) RL = 32 Ω & 5% distortion 1.2 1.5 Vpp
Maximum Capacitive Load –
Ear(+) to Ear(-) 100 pF
Amplifier Gain 1 dB
Amplifier State in Power Down High Z
Enfora recommends an external audio amplifier for loads of less than 16 Ω or if volume
is inadequate.
6.6.15 Headset Microphone Input
Parameter Conditions MIN TYP MAX UNIT
Maximum Input Range –
Mic(+) to Mic(-) Inputs 3 dBm0 (Max. digital
sample amplitude when PGA
gain set to 0 dB)
32.5 mVrms
Nominal Ref. Level –
Mic(+) to Mic(-) -10 dBm0
Differential Input Resistance –
Mic(+) to Mic(-) 100 kΩ
Microphone Pre-Amplifier Gain 25.6 dB
Bias Voltage on Mic(+) 2.0 or 2.5 V 2.0 2.5 Vdc
Mic Bias Current Capability 0 0.5 mA
6.6.16 Headset Speaker Output
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Parameter Conditions MIN TYP MAX UNIT
Maximum Swing –
HS Spkr (+) to (-) RL = 32 Ω & 5% distortion 1.6 1.96 Vpp
Maximum Capacitive Load –
HS Spkr (+) to (-) 100 pF
Amplifier Gain -7 -5 dB
Amplifier State in Power Down High Z
The headset speaker output is a single ended output. Enfora recommends an external
audio amplifier for loads of less than 32 Ω or if volume is inadequate.
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6.6.17 Audio Design Note
Speaker and microphone PCB traces should be run in pairs and buried between two
ground planes for best results. The following figure provides a sample circuit design
for connection of Mic and Speaker pins.
Figure 19 Audio Reference
(Please note that this schematic can be zoomed to read the detail)
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6.7 Subscriber Identity Module (SIM) Carrier
The SIM, an integral part of any GSM terminal device, is a “smart card” that is programmed
with subscriber information:
• The user information consists of an International Mobile Subscriber Identity (IMSI)
number, which is registered with the GSM provider, and an encryption Ki (pronounced
"key"). This information consists of a microprocessor and memory installed on a
plastic card.
Note: The SIM is not provided with the Enfora Enabler II-G A-GPS module. The SIM must be
obtained from the GSM service provider and must be provisioned by the operator for data
and/or voice. Always take care to protect the SIM: the GSM terminal will not operate without
the SIM installed.
The SIM provides the IMSI for authentication. To gain access to the GSM network, the
network
must recognize the IMSI number, and the terminal must be able to properly decrypt the
data sent by the network. The SIM also serves as a buffer for SMS messages, storing
the message for transmission until a radio link is available and buffering received
messages until retrieved.
6.7.1 SIM Integration for the Enfora Enabler II-G A-GPS Module
The Enabler II-G A-GPS module default configuration does not include an on-board SIM
carrier. Enfora provides a separate product SKU for the Enabler II-G A-GPS module with
the integrated SIM carrier.
6.7.2 Using a Remote SIM with the Enfora Enabler II-G A-GPS Module
The Enabler II-G A-GPS module default configuration does not include an on-board SIM
carrier. If the module is going to be integrated using a remote SIM, the following guidelines
are provided:
• To utilize a remote SIM, the integrator must provide a suitable SIM connector on the
Application.
• The maximum distance from the Enabler II-G A-GPS module to the remote SIM
connector must not exceed 25.4 cm (10 inches).
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Remote SIM Power Parameter/Conditions MIN TYP MAX UNIT
VDD Remote SIM Supply Voltage
3 V Mode
2.7 3.3 Vdc
IDD Remote SIM Supply Current –
3V Modes 10 mA
Figure 20 Remote SIM Interface
• ESD Protection
• 15 kV Air Discharge
• 8 kV Contact Discharge
6.7.2.1 Remote SIM Component Information
A SIM carrier compatible for use on the Enabler II-G A-GPS module is a JAE Plug-In SIM
Card carrier with hinge; JAE part number SF7W006S1BE1000. JAE Plug-in SIM Card
with hinge cover SF7 Series.
Remote SIM Line Description
SIM_VDD Remote SIM power supply
SIM_RST Remote SIM reset
SIM_CLK Remote SIM clock
SIM_I/O Remote SIM serial data interface
SIM
_
CL
<25.4 cm (10
i)
SIM
_
I/
SIM
_
RS
SIM
_
VD
Enabler II-G
A-GPS
SIM
Interfac
e
Remote SIM
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7.0 GSM/GPRS Modes of Operation
GSM/GPRS supports many optional services and modes. The Enfora Enabler II-G A-GPS
module supports the following GSM/GPRS services:
• Circuit-switched data
• Short-Message Services (SMS)
• Class B GPRS Functionality
• Voice communication
7.1 Enabling the Transmission Modes for the GSM/GPRS Services
Each of the GSM/GPRS services has two modes that can be enabled separately:
• Mobile-originated (MO): allows the making of a service request (such as, making a telephone
call or sending an SMS)
• Mobile-terminated (MT): allows receiving a service request (such as receiving a telephone
call or an SMS)
Note: Contact your local GSM operator to ensure that the services and modes have been
provisioned for the SIM.
7.2 Voice Communication
The Enfora Enabler II-G A-GPS module has full voice capabilities, provided the necessary
connections have been made for the speaker and microphone pins on the 60-pin I/O connector.
The Enfora Enabler-G AT Command Set Reference - GSM0102PB001MAN has the entire list
of commands that can be used to control the voice functionality. The quick start guide in this
manual provides a basic command set that can be used to initialize and test the voice
functionality.
The Enfora Enabler II-G A-GPS module supports three vocoder compression algorithms for voice
communication: Full-Rate (FR), Enhanced Full-Rate (EFR), and Half-rate (HR).
7.3 Circuit-Switched Data
In this mode, the Enfora Enabler II-G A-GPS module supports both of the connection modes of
transmission that are provided by GSM:
• Non-Transparent mode delivers a constantly low error rate but with a non-guaranteed
throughput or delay. The Non-Transparent service provides a performance that is closest to
using a modem over a fixed Public Switched Telephone Network (PSTN) line.
Note: All GSM service providers may not support Transparent mode. In those cases, the Enfora
Enabler II-G A-GPS module can be configured to switch automatically to Non-Transparent mode.
This capability depends on the settings in the AT+CBST command.
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7.4 SMS: Short Message Services
• Short Message Services (SMS) is a feature-rich GSM service. The Enfora Enabler II-G A-
GPS module can perform the following tasks:
• Sending and receiving binary messages of up to 160 characters (7-bit characters)
• Sending and receiving text messages of up to 140 bytes (8-bit data)
• Submitting a SMS Protocol Data Unit (PDU) to a SMSC (Short Message Service Center)
and storing a copy of the PDU until either a report arrives from the network or a timer
expires
• Receiving a SMS PDU from a SMSC
• Returning a delivery report to the network for a previously received message
• Receiving a report from the network
• Notifying the network when the module has sufficient memory capacity available to
receive one or more SMS messages (after the module had previously rejected a
message because its memory capacity was exceeded)
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8.0 GPS Modes of Operation
The Enabler II-G A-GPS module provides a number of GPS features that can be used in a
number of different manners. The following modes of operation are supported in the module:
Autonomous, Mobile Assisted, and enhanced Autonomous
8.1 Autonomous
This mode of operation is when the GPS receiver operates in real-time. The receiver
obtains the ephemeris data form the satellite constellation when it is able to attain a valid
signal. Minimum signal strength is required in order for the receiver to accurately decode
the ephemeris data. The data is transmitted via a serial port in NMEA sentences. The
NMEA sentences give information like location, speed, course, and other location
services depending on the NMEA sentence. This mode of operation is a mode supported
as a standard within the industry. Below is an outline describing how autonomous mode
works.
1. GPS receiver scans the sky for satellites in view of the GPS receiver. The amount of
time for receiving data will vary depending upon view of the sky, time of last update, and
other factors.
2. GPS data is received from a constellation of satellites in view of the module. The GPS is
data is transmitted to the GPS receiver on the GPS chipset. The GPS chipset will then
translate this information into NMEA sentence that can be streamed out of the serial port.
3. The GPS data is read out of the Enfora module by the terminal device as defined by the
AT statement AT$GOPMD. The terminal device will respond to this GPS data in a
predefined manner and perform certain functions on the platform device.
8.2 Mobile Assisted
This mode uses a remote server to process position information. The receiver will obtain
various data points like doppler, position, etc…and send the information over a data link
to a server. The server will use that data in conjunction with their current information to
obtain data that is sent back to the receiver. This is a mode supported as a standard
within the industry.
8.3 Enhanced Autonomous
Mobile-Based mode is implemented when limited data is present at the GPS receiver and data
cannot be processed accurately. This condition can happen when the view of the sky is
obstructed, high multi-path reflection (i.e. in a downtown area with lots of skyscrapers) or
atmospheric conditions. The limited data is sent via a data connection to an A-GPS server. The
A-GPS server takes this data and uses it in combination with accurate GPS data that is collected
continuously. The limited data is updated with information that is more accurate. This information
is then sent to the mobile device. The mobile device will be responsible for processing the
location data in detail. It will also be responsible for presentation to an application and/or user.
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Using this data, the device can accurately detect its position faster. In this mode, the device can
accurately detect its position in low signal strength areas such as buildings. This mode will speed
up Time to first fix (TTFF). Figure 2 below describes the Mobile Based mode of operation in
detail.
For additional information and details on the different modes of operation, see
GSM????PB001MAN - Enfora Integrated GPS Module Overview.
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9.0 SIM Operation
9.1 Provisioning the SIM
The SIM can support optional features or services. Most operators typically configure the SIM to
send/receive voice calls and to receive SMS; however, some may require an additional tariff to
enable the SIM to send SMS. The transmission of circuit switched and GPRS data are also
additional services that may be required to allow the service:
• Mobile-originated (MO): allows making a service request (such as, making a call or sending
an SMS)
• Mobile-terminated (MT): allows receiving a service request (such as, receiving a phone call or
an SMS)
It is imperative for the Enfora Enabler II-G A-GPS module that the SIM be configured for the
optional services that are required for the application.
9.2 GSM Services Supported by the Enfora Enabler II-G A-GPS Module
The Enfora Enabler II-G A-GPS module supports four GSM services (modes of operation) that
must be enabled by the operator:
• Voice calls (MO and MT): requires a telephone number
• SMS (MO and MT): uses the telephone number for Voice
• Circuit-switched data calls (MO and MT): requires a telephone number
• The GSM SIM can have multiple telephone numbers.
9.3 GPRS Services Supported by the Enfora Enabler II-G A-GPS Module
The Enfora Enabler II-G A-GPS module supports the following GPRS (modes of operation) that
must be enabled by the operator:
• GPRS Packet Connectivity (MO and MT) with Both Dynamic and Static IP option
• GPRS SMS (MO and MT): uses the IP (Dynamic or Static) set by the operator
• Multiple APN Setting
• Quality of Service Options
• Multi-slot 10 Class of Service
9.4 Selecting the GSM Modes of Operation
When provisioning the SIM for the Enfora Enabler II-G A-GPS module, enable the following
modes of operation:
• Voice calls: configure the SIM for both MO and MT service (to send and receive)
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• SMS: configure the SIM either for MT alone (to receive) or for both MO and MT (to send and
receive)
• Circuit Switched Data: configure the SIM either for MO alone (to send) or for both MO and
MT (to send and receive)
Voice SMS CS Data GPRS Function
MO/MT MT MO Voice calls, receive SMS, make data calls
MO/MT MO/MT MO Voice calls, receive / send SMS, make data calls
MO/MT MO/MT MO/MT Voice calls, receive / send SMS, make / receive data
calls
(requires an additional data telephone number)
10.0 Software Interface
10.1 Software Interface
The application sends commands to the Enfora Enabler II-G A-GPS module via the 60-pin I/O
signal connector. These commands use the Enfora AT Command Set and/or Enfora’s Packet
API.
The Enfora Enabler II-G A-GPS module operates in one of the following modes:
• Command mode: Used for configuring the Enfora Enabler II-G A-GPS module, for
interrogating the GSM network, and for placing and receiving calls. It uses the AT command
set via the serial port for communication.
• On-line mode: Used after a circuit-switched data call has been established. Data is passed
between the Enfora Enabler II-G A-GPS module and the controlling application without
command interpretation. The only AT command that is interpreted in On-line mode is the
+++ command. (This command places the Enfora Enabler II-G A-GPS module in Command
mode but does not terminate the circuit-switched data call.)
• IP Packet /API Mode: Used to read/write modem parameters, interrogate network
information, and place and receive calls in real-time, multi-tasking mode. The Packet API
mode is facilitated over a PPP connection and the packets can be constructed according to
the information provided in the Enfora GSM-GPRS Family UDP-API Reference
GSM0102PB002MAN. Enfora GSM-GPRS Family Modem Control Library Reference
GSM0000PB006MAN provides detail of the UDP Modem Control Library that has three
levels: port , messaging, and modem libraries. Each of the three levels contains one or more
libraries. For example, the port libraries layer has UDP PPP Port, UDP Socket Port, and
COM Port libraries. All libraries are provided as a part of the Enfora Enabler II-G Assisted
GPS Module Integration Toolkit.
• GPS only mode: Used for configuring the Enfora Enabler II-G A-GPS module, for
interrogating the GPS satellite network and sending NMEA data. It uses the AT command
set via the serial port for communication.
The AT command driver of the Enfora Enabler II-G A-GPS module never exits the Command
state, that is, it never enters the On-line mode. Although the host interface may not be able to
access the AT command interpreter, it is always running and is available via the API Mode over a
PPP connection and/or via the RF interface.
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• In the Command state, characters that are received from the Customer Premise Equipment
(CPE) are treated as AT commands by the Enfora Enabler II-G A-GPS module.
• In response to the commands received from the CPE, the Enfora Enabler II-G A-GPS module
sends characters (AT commands) to the CPE.
• Various events can also trigger the Enfora Enabler II-G A-GPS module to send characters
(AT commands) to the CPE.
10.2 Format for the AT Commands
The general format of the command line is: <prefix> <command> <CR>
<prefix> AT
<command> See AT Command
Manual
<CR> 0X0D
The prefix AT obtains synchronization, identifies the character parameters, and indicates that a
command may be in the following characters.
AT commands are not case sensitive: use either capital letters or lower-case letters for the AT
command.
Note: Some AT Command parameter values ARE case sensitive and are documented
in the Enfora Enabler-G AT Command Set Reference - GSM0102PB001MAN.
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10.3 Enfora AT Command Set
For a full description of the AT commands, refer to the Enfora Enabler-G AT Command Set
Reference - GSM0102PB001MAN.
Note: A command description that includes an *asterisk denotes that the GSM service provider
must enable supplementary services functionality before the command is available.
10.4 Enfora Packet Application Programming Interface
10.4.1 UDP-API Architecture
The following information provides an overview of the Enfora UDP-based API architecture. Full
details are provided in the Enfora GSM-GPRS Family UDP-API Reference GSM0102PB002MAN.
Figure 21 provides the general structure for the UDP-API.
Create Control /
Status Message
Add UDP Header
Add IP Header
Add PPP Framing
Write to COM Port
Read Control / Status
Message
Decode UDP Header
Decode IP Header
Remove PPP Framing
Read from COM Port
Host Computer
Modem
Figure 21 UDP-API Structure
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The following provides information related to the general construction of the UDP-API packet.
Other command structures are available and can be found in the API reference manual.
All AT commands listed in the GSM0102PB001MAN document are supported via this method.
To send an AT command via DUN or OTA, the user has to follow the following message
structure. This message structure sends the ATI command to the modem and receives Enfora
L.P. response from the modem.
Bytes Data
Description Comments
0 – 19 IP Header
20 – 27 UDP Header
28 0x00
29 0x01 Sequence Number
30 0x04 AT Command Read/Write
31 0x00 Reserved
32 0x41
33 0x54
34 0x49
AT Command
(ATI)
Following data will be returned by the modem:
Bytes Data
Description Comments
0 – 19 IP Header
20 – 27 UDP Header
28 0x00
29 0x01 Sequence Number
30 0x05 AT Command Response
31 0x00 Reserved
32 0x0D
33 0x0A
34 0x45
35 0x6E
36 0x66
37 0x6F
38 0x72
39 0x61
40 0x2C
41 0x20
42 0x49
43 0x6E
44 0x63
45 0x2E
46 0x0D
47 0x0A
AT Command Response
(Enfora L.P.)
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10.5 Enfora Modem Control Library Architecture
The following information provides an overview of the Enfora Modem Control Library architecture.
Full details are provided in the Enfora GSM-GPRS Family Modem Control Library Reference
GSM0000PB006MAN.
Figure 22 provides the general embedded architecture for the Enabler II-G A-GPS modem.
There are various levels of access provided to allow complete application design flexibility. SLIP
access is not currently available.
COM Port Library
UDP SLIP Port Library UDP PPP Port Library UDP Socket Port Library
UDP Messaging Library
UDP Modem Library
GPRS Parameters Table
Port libraries
Messaging
libraries
Modem libraries
Figure 22 Library Layout
The table below can be used to help decide which library configuration is the best for a project.
SLIP access is not currently available.
UDP SLIP Port
Library
UDP PPP Port
Library
UDP Socket
Port Library
UDP Messaging
Library with
UDP Messaging
Library with
UDP Messaging
Library with
UDP Modem
Library with
S
UDP Modem
Library with
UDP Modem
Library with
S
Benefits
Allows dynamic IP
assignment z z z z z z
Allows multiple application
to access the modem
z
z
z
Allow AT Commands z z z z z z
Allows modem control
message z z z z z z z z z
Provide modem control
message formatting
z z z z z z
Provides modem
parameters database
service
z z z
Suitable for microcontroller
programming z z z z z z
Requirements
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Requires TCP/IP stack z
z
z
Memory usage Low Low Low Low Low Low High High High
Table 3 - Modem Library Configurations
10.5.1 Using Port Library
Figure 23 provides the architecture for Port Library access.
UART DriverPort Library
Host Control InterfaceHost Application
Host Modem
Figure 23 Using Port Library
Port Libraries provide the most basic modem access services. It converts modem control
messages to either UDP SLIP or UDP PPP, and vice versa. SLIP access is not currently
available.
Modem Control
Message
Ú
SLIP
Header IP
Header UDP
Header Modem Control
Message SLIP End
Or
PPP
Header IP Header UDP
Header Modem Control
Message PPP End
10.5.2 Using Messaging Library
Figure 24 provides the architecture for Messaging Library access.
UART DriverPort Library
Host Control Interface
Messaging Library
Host Application
Host Modem
Figure 24 Using Messaging Library
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Messaging Library provides some important modem access services. It builds a modem control
message and converts the message to either UDP SLIP or UDP PPP before sending the data to
the modem. It also parses the modem control messages from the modem. SLIP access is not
currently available.
Parameter,
Data
Ú
SLIP
Header IP
Header UDP
Header Modem Control Message SLIP End
Or
PPP
Header IP
Header UDP
Header Modem Control Message PPP End
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10.5.3 Using Modem Library
Figure 25 provides the architecture for Modem Library access.
UART DriverPort Library
Host Control Interface
Messaging Library
Modem Library
Host Application
Host Modem
Figure 25 Using Modem Library
Modem Library provides the most complete modem access services. In addition to the features
already provided by the Messaging Library, the modem library maintains a modem parameter
database. In order to maintain the parameter database, the modem library requires more
memory than the other libraries. This makes the library unsuitable for some of the micro
controller programming. However, it is a good library to use by applications in a personal
computer or a PDA. It allows the programmer to develop host applications for the modem
quickly.
11.0 Setup and Initialization
11.1 General Setup
The GPRS modem is controlled through the Modem RS232 port on the development board.
Connect a nine pin straight through serial cable from the Modem RS232 connector to the serial
port on the controlling computer.
Hook up power supply, connect antenna, and install SIM into modem.
11.1.1 HyperTerminal Configuration for Enabler II-G A-GPS module
The following provides an example for setting up a Windows HyperTerminal session that can
be used to experiment with various configurations on the Enabler II-G A-GPS module for
controlling computer:
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1. Select the connection interface, Direct to Com 1 (or whatever port is the serial port).
Figure 26 HyperTerminal Definition
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2. Configure the COM port as displayed below.
Figure 27 COM Port Settings
11.1.2 Initialization (AT Command Interface)
In the GSM vocabulary, a call from GSM mobile to the PSTN is called a "mobile-originated call"
or "outgoing call". A call from the fixed network to a GSM mobile is called a "mobile-terminated
call" or "incoming call."
In the following examples, “Entry” refers to the application. The following convention describes
the direction of the data exchange:
• The data exchange from the customer application to the Enfora Enabler II-G A-GPS
module is designated as:
Entry
• The data exchange from the Enfora Enabler II-G A-GPS module to the customer
application is designated as:
Response
Note: With the exception of the +++ command (Online Escape Sequence), all
commands must be preceded by the AT attention code (or command prefix) and
terminated by pressing the <CR> character.
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In the following examples, the <CR> and <CR><LF> are intentionally omitted for clarity and
space.
11.1.3 Initial Response to the AT Command
After power is applied to the Enfora Enabler II-G A-GPS module, the module performs a
power-up self-test. The self-test completes within one (1) second. When queried with the AT
command, the Enfora Enabler II-G A-GPS module responds with one of the following result
codes:
• OK signifies that the Enfora Enabler II-G A-GPS module is ready, that it correctly interprets
the AT command, and that it has executed the command.
• ERROR signifies that the Enfora Enabler II-G A-GPS module does not understand the
command or that the command is invalid.
Entry AT
Response OK Command valid: module is ready
The Enfora Enabler II-G A-GPS module must be in AT Command mode (please refer to
section 11.3 GPRS Packet Examples for packet mode initialization and setup) when any
command is entered (with the exception of the online escape sequence). Commands entered
when the module is in On-line mode are treated as data, and are transmitted as such to the
receiving module. i.e. If the module is in PPP or SLIP mode, AT commands cannot be
entered.
11.1.4 Sending an Initialization String to the Enfora Enabler II-G A-GPS Module
The following example provides the sample AT commands and responses for the following
initialization tasks:
• Reset the module to the factory defaults
• Disable character echo
• Transmit Result Codes
• Set the module to Verbose mode (to display result codes as words)
• Set the DCD to match the state of remote modem
• Ignore the DTR
Entry AT&FE0Q0V1&C1&d0 Initialization string
Response OK Command is valid
Entry ATSO=1 Auto answer on 1st ring
Response OK Command is valid
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11.1.5 Setting Up the Communication Mode for the Enfora Enabler II-G A-GPS Module
The following example sequence provides the AT command and response for setting the
Enfora Enabler II-G A-GPS module for full phone functionality, automated operator selection,
9600 baud, non-transparent mode.
Entry AT+CFUN=1 FULL phone functionality
Response OK Command is valid
Entry AT+COPS=0 Automatic operator selection
Response OK Command is valid
Entry AT+CBST=7,0,1 9600 baud, non-transparent mode
Response OK Command is valid
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11.1.6 Querying the Status of the Enfora Enabler II-G A-GPS Module
This topic is addressed in the Enfora Application Note GSM0000AN006 – Enabler-G Module
Status Query.
11.1.7 Setting Module Reporting Parameters for GSM and GPRS
This topic is addressed in the Enfora Application Note GSM0000AN007 - Enabler-G Status
Reporting.
11.2 GSM/SMS Examples
11.2.1 Initialize the Enfora Enabler II-G A-GPS Module to Send and Receive SMS Text
Messages
This topic is addressed in the Enfora Application Note GSM0000AN004 - Enabler-G SMS
Configuration and Use.
11.2.2 Managing SMS Messages
This topic is addressed in the Enfora Application Note GSM0000AN004 - Enabler-G SMS
Configuration and Use.
11.2.3 Data Call Configuration
This topic is addressed in the Enfora Application Note GSM0000AN003 - Enabler-G Data
Circuit Switched Call Configuration and Use.
11.2.4 Voice Call Configuration
This topic is addressed in the Enfora Application Note GSM0000AN003 - Enabler-G Data
Circuit Switched Call Configuration and Use.
11.3 GPRS Packet Examples
11.3.1 GPRS ATTACH and ACTIVATE
This topic is addressed in the Enfora Application Note GSM0000AN005 - Enabler-G
Automated Network Connection Configuration and Use.
11.3.2 Windows PPP Setup
The Enabler II-G A-GPS module can be used in a Windows operating system environment as
a standard serial modem device. The required setup and configuration process is contained in
Enfora Application Notes GSM0000AN001 - Enabler-G PPP Configuration for Windows 98
and GSM0000AN002 - Enabler-G PPP Configuration for Windows 2000.
11.4 GPS Examples
11.4.1 Autonomous Mode
This topic is addressed in the Enfora Application Note GSM????AN??? - Enabler-G
Automated Network Connection Configuration and Use.
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11.4.2 Mobile Based Mode
This topic is addressed in the Enfora Application Note GSM????AN??? - Enabler-G
Automated Network Connection Configuration and Use.
11.4.3 Enhanced Autonomous Mode
This topic is addressed in the Enfora Application Note GSM????AN??? - Enabler-G
Automated Network Connection Configuration and Use.
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12.0 Integration and Testing
The Enfora Enabler II-G A-GPS module has been designed to minimize the amount of time
required for integration and testing the application. By being fully certified by the appropriate
bodies, the Enfora Enabler II-G A-GPS module provides seamless integration into the GSM
network.
The integration issues for the application can be narrowed to the utilization of the AT commands
and the use of the GSM functionality. Coverage and signal quality may be evaluated by using the
RSSI commands. Additional network information can be determined by using AT commands.
Integration of the GPRS Packet capabilities is more complicated than using AT command
sequences to initiate the connection and begin transferring data. The following Application Notes
should be used to integrate the GPRS packet capabilities:
GSM0000AN001 - Enabler-G PPP Configuration for Windows 98
GSM0000AN002 - Enabler-G PPP Configuration for Windows 2000
GSM0000AN008 - Enabler-G PPP Configuration for Windows XP
GSM0000AN010 - Enabler-G PPP Configuration for PocketPC 2002
GSM0000AN005 - Enabler-G Automated Network Connection Configuration and Use
12.1 Integrating the Enfora Enabler II-G A-GPS Module
Note: Generally, all interfaces that are externally available to the end user need to be
ESD-conditioned and terminated in some way. Many of these interfaces should not be
connected with power applied.
At the highest level, this is done using some type of GSM test equipment (such as, Racal
6103E), a computer, and a serial interface tester. The GSM test equipment must be able
to simulate a GSM call and measure the key parameters related to the module.
Additionally, the serial interfaces and some minimal SIM functionality can be verified by
sending AT commands to the Enfora Enabler II-G A-GPS module.
All of these conditions need to be verified at ambient as well as extreme conditions.
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As part of integration, each of the following interfaces must be verified:
Information Recommendations
SIM The maximum line length of the SIM interface is 25.4 cm (10 inches).
The Enfora Enabler II-G A-GPS module takes care of the signal
conditioning
As a minimum, an external application with a remote SIM will require a
standard SIM carrier.
Filter the SIM VCC signal with a 10 uf / 10 V capacitor to help with the line
length.
Primary and
secondary serial
Interfaces
The Enfora Enabler II-G A-GPS module uses a 3 V digital interface. The
RS-232 signals must be level-shifted to get standard levels. These signals
must be ESD-protected.
Reset Interface Resets the Enfora Enabler II-G A-GPS module when tied low.
Audio/Microphone
Interface Preliminary balancing on Enfora Enabler II-G A-GPS module.
Maximum length TBD
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Testing the following parameters verifies the RF parameters that may be affected by such things
as RF path loss, power supply noise, and external interference.
Functionality Parameters to be Tested
Transmitter Frequency Error
Phase Error
PA Ramp
Modulation Spectrum
RF Power Steps
Timing Advance
Receiver BER Based RX Tests (RXQUAL RXLEV)
BER Based Sensitivity
Testing the following GSM functionality verifies proper network communication.
Functionality Parameters to be Tested
Transmitter Frequency Error
Phase Error
PA Ramp
Modulation Spectrum
RF Power Steps
Timing Advance
Receiver BER Based RX Tests (RXQUAL RXLEV)
BER Based Sensitivity
Testing the following GSM functionality verifies proper network communication.
Functionality Parameters to be Tested
Network Function Synchronization and registration
Call set-up and call termination (both MT and MO calls)
SMS and/or data calls
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13.0 APPENDIX A - Warranty Repair and Return Policy
ENFORA L.P. 12-MONTH LIMITED WARRANTY
Enfora warrants to the original purchaser of the product that, for a period of one (1) year
from the date of product purchase, the product hardware, when used in conjunction with
any associated software (including any firmware and applications) supplied by Enfora,
will be free from defects in material or workmanship under normal operation. Enfora
further warrants to such original purchaser that, for a period of ninety (90) days from the
date of product purchase, any software associated with the product will perform
substantially in accordance with the user documentation provided by Enfora, and any
software media provided with the product will be free from defects in material or
workmanship under normal operation. Enfora does not warrant that the product
hardware or any associated software will meet the purchaser’s requirements or that the
operation of the product hardware or software will be uninterrupted or error-free. This
limited warranty is only for the benefit of the original purchaser and is not transferable.
During the warranty period applicable to the product hardware, Enfora, at its expense
and in its sole discretion, will repair or replace the product if it is determined to have a
covered hardware defect, provided that the purchaser first notifies Enfora of any such
defect, furnishes Enfora with a proof of purchase, requests and obtains a return
merchandize authorization (RMA) number from Enfora, and returns the product, shipping
charges prepaid, to Enfora under that RMA. If, upon reasonable examination of the
returned product, Enfora does not substantiate the defect claimed by purchaser, or
determines that the defect is not covered under this limited warranty, Enfora will not be
required to repair or replace the product, but may instead reship the product to the
purchaser, in which case purchaser shall be responsible for paying Enfora’s usual
charges for unpacking, testing, and repacking the product for reshipment to purchaser.
Purchaser shall bear the risk of loss or damage in transit to any product returned by
purchaser to Enfora, or any returned product not found to be defective or covered under
this warranty and reshipped by Enfora to purchaser. In the event Enfora repairs or
replaces a defective product, the repaired or replacement product will be warranted for
the remainder of the original warranty period on the defective product. If Enfora is
unable to repair or replace a defective product, the purchaser’s exclusive remedy shall
be a refund of the original purchase price. Any returned and replaced product, or any
product for which Enfora has refunded the original purchase price, becomes the property
of Enfora.
During the warranty period applicable to the software or its media, Enfora, at its
expense, will replace any defective software or media if purchaser gives written
notification of the defect to the technical support department at Enfora during the
applicable warranty period. Enfora shall not have any obligation to provide any software
bug fixes, upgrades or new releases except as necessary to correct any covered defect
of which purchaser notifies Enfora during the applicable warranty period.
Enfora shall have no obligation under this limited warranty for (a) normal wear and tear,
(b) the cost of procurement of substitute products or (c) any defect that is (i) discovered
by purchaser during the warranty period but purchaser does not notify or request an
RMA number from Enfora, as required above, until after the end of the warranty period,
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(ii) caused by any accident, misuse, abuse, improper installation, handling or testing, or
unauthorized repair or modification of the product, (iii) caused by use of any software
other than any software supplied by Enfora, or by use of the product other than in
accordance with its documentation or (iv) the result of electrostatic discharge, electrical
surge, fire, flood or similar causes.
ENFORA’S SOLE RESPONSIBILITY AND PURCHASER’S SOLE REMEDY UNDER
THIS LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE PRODUCT
HARDWARE, SOFTWARE OR SOFTWARE MEDIA (OR IF REPAIR OR
REPLACEMENT IS NOT POSSIBLE, OBTAIN A REFUND OF THE PURCHASE
PRICE) AS PROVIDED ABOVE. ENFORA EXPRESSLY DISCLAIMS ALL OTHER
WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WITHOUT
LIMITATION ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY, SATISFACTORY PERFORMANCE AND FITNESS FOR A
PARTICULAR PURPOSE. IN NO EVENT SHALL ENFORA BE LIABLE FOR ANY
INDIRECT, SPECIAL, EXEMPLARY, INCIDENTAL OR CONSEQUENTIAL DAMAGES
(INCLUDING WITHOUT LIMITATION LOSS OR INTERRUPTION OF USE, DATA,
REVENUES OR PROFITS) RESULTING FROM A BREACH OF THIS WARRANTY OR
BASED ON ANY OTHER LEGAL THEORY, EVEN IF ENFORA HAS BEEN ADVISED
OF THE POSSIBILITY OR LIKELIHOOD OF SUCH DAMAGES.
Some jurisdictions may require a longer warranty period than specified above and,
accordingly, for products sold in those jurisdictions the applicable warranty period shall
be extended as required under the law of those jurisdictions. Furthermore, some
jurisdictions may not allow the disclaimer of implied warranties or the exclusion or
limitation of incidental or consequential damages, so the above disclaimer, limitation or
exclusion may not apply to products sold in those jurisdictions. This limited warranty
gives the purchaser specific legal rights and the purchaser may have other legal rights
that vary from jurisdiction to jurisdiction.
In some instances, certain aspects of the product warranty may also be covered in a
separate written agreement between Enfora and the distributor or reseller, if any, from
whom purchaser purchased the product. That agreement may provide, for example, a
longer warranty period or a different product return procedure that may also be available
to purchaser (e.g., the product may be returned to Enfora through the distributor or
reseller).
This limited warranty shall be governed by the laws of the State of Texas, United States
of America, without regard to conflict of laws principles. This limited warranty shall not be
governed in any respect by the United Nations Convention on Contracts for the
International Sale of Goods.
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14.0 APPENDIX B - Regulations and Compliance
This section summarizes the responsibilities and actions required of manufacturers and
integrators who incorporate OEM versions of the Enfora Enabler II-G AGPSA-GPS module into
their products. In certain situations and applications, these products will require additional FCC,
CE, GCF, PTCRB or other regulatory approvals prior to sale or operation. Appropriate
instructions, documentation and labels are required for all products. For more information
concerning regulatory requirements, please contact Enfora.
14.1 GCF Approval (Formerly FTA)
The Enfora Enabler II-G A-GPS module is type approved in accordance with the requirements of
and through the procedures set forth by the GSM industry association. The relevant
conformance specification is GSM 11.10-1 for GSM 850, 900, and 1800 MHz devices. For PCS
1900 MHz devices, the relevant standard is PCS 11.10, a version of GSM 11.10-1 that has been
modified as appropriate for the North American GSM market. For applications that use an
unmodified version of the Enfora Enabler II-G A-GPS module, further testing in this area may not
be required. Any OEM changes in the SIM interface, antenna port, software or the physical
makeup of the unit may require an incremental FTA to ensure continued compliance with the
above-mentioned standards. For more information concerning type approval, please contact
Enfora.
14.2 Electromagnetic Compatibility (EMC) and Safety Requirements
The Enfora Enabler II-G A-GPS module has been tested and approved for application in the
United States of America (US) and the European Union (EU). The compliance details for each of
these markets follow. For other markets, additional or alternative regulatory approvals may be
required. Always ensure that all rules and regulations are complied with in every country that the
OEM application is to be operated. Regardless of the country or market, the OEM must comply
with all applicable regulatory requirements.
14.3 EMC/Safety Requirements for the USA
Compliance to the US rules and regulations falls under two categories:
• Radio approvals: Federal Communications Commission (FCC)
• Transmitter: FCC Rules, Part 24
• Unintentional emission: FCC Rules, Part 15
• Product safety approvals: NRTL by an OSHA-approved Nationally Recognized Testing
Laboratory (NRTL)
Although the Enfora Enabler II-G A-GPS module has been authorized by the FCC and listed as a
component by an NRTL, products and applications that incorporate the Enfora Enabler II-G A-
GPS module will require final verification of EM emission and product safety approval.
Note: Particular attention should be made to the following statements regarding RF Exposure:
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14.4 Human Exposure Compliance Statement
MGL0208-xx Quad-Band A-GPS Module
Enfora certifies that the Enfora Enabler II-G A-GPS 850/900/1800/1900 MHz GSM Radio Module
(FCC ID: MIVMLG0208) complies with the RF hazard requirements applicable to broadband PCS
equipment operating under the authority of 47 CFR Part 24 (and Part 22 for GSM 850), Subpart E
of the FCC Rules and Regulations. This certification is contingent upon installation, operation
and use of the Enfora Enabler II-G A-GPS module and its host product in accordance with all
instructions provided to both the OEM and end used. When installed and operated in a manner
consistent with the instructions provided, the Enfora Enabler II-G A-GPS module meets the
maximum permissible exposure (MPE) limits for general population / uncontrolled exposure at
defined in Section 1.1310 of the FCC Rules and Regulations.
Note: Installation and operation of this equipment must comply with all applicable FCC Rules
and Regulations, including those that implement the National Environmental Policy Act of 1969
(Part 1, Subpart I), with specific regard to antenna sitting and human exposure to radio frequency
radiation. For further guidance, consult the FCC Rules, your service provider, or Enfora.
14.5 Compliance with FCC Regulations
The Federal Communications Commission (FCC) is the agency of the Federal Government that
oversees all non-governmental radio frequency transmitters that operate within the United States.
Unintentional emissions from digital devices are regulated by Part 15 of the FCC Rules and
Regulations, which distinguishes between the environments in which these devices may operate.
Intentional radiators operating as a PCS-1900 radio transmitter are regulated under Part 24,
Subpart E—Broadband PCS of the FCC Rules and Regulations.
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14.6 Unintentional Radiators, Part 15
Equipment designated as Class A is intended for use in a commercial, industrial or business
environment. The Enfora Enabler II-G A-GPS module has been tested and found to comply with
the limits for a Class A digital device and can be integrated into equipment or applications
intended for use in commercial, industrial or business environments.
The following statement must be included in the user manual for such products:
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used
in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own
expense.
Equipment intended for use in a residential environment (not-withstanding use in commercial,
industrial or business environments) is designated as Class B. The Enfora Enabler II-G A-GPS
module has been tested and found to comply with the limits for a Class B digital device and can
be integrated into equipment or applications intended for use in residential environments.
The following statement must be included in the user manual for such products:
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses, and
can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on the user is encouraged to try to correct the interference by one or more of
the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
14.7 Intentional Radiators, Part 24
Products incorporating the Enfora Enabler II-G A-GPS transceiver operate as Personal
Communications Services(PCS) devices under the authority of Part 24, Subpart E—Broadband
PCS, of the FCC Rules and Regulations. All such transmitters must be authorized by the FCC
through its Certification process, as detailed in Part 2, Subpart J - Equipment Authorization
Procedures. Through the Certification process, the FCC verifies that the product complies with all
applicable regulatory and technical requirements, including those that address human exposure
to radio frequency radiation. In general, radio frequency transmitters cannot be sold or operated
in the US prior to FCC approval.
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14.8 Instructions to the Original Equipment Manufacturer (OEM)
To comply with the requirements of the National Environmental Policy Act (NEPA) of 1969,
operation of an FCC-regulated transmitter may not result in human exposure to radio frequency
radiation in excess of the applicable health and safety guidelines established by the FCC.
Further information on RF exposure issues may be found in the FCC's Office of Engineering and
Technology (OET) Bulletin Number 65, "Evaluating Compliance with FCC Guidelines for Human
Exposure to Radio Frequency Electromagnetic Fields" and Supplement C, "Additional Information
for Evaluating Compliance of Mobile and Portable devices with FCC Limits for Human Exposure
to Radio Frequency Emissions.” Both of these documents are available via the Internet at the
OET web site: http://www.fcc.gov/oet
The Enfora Enabler II-G A-GPS products are GSM radio transceivers, which operate under the
authority of 47 CFR Part 24, Subpart E of the FCC Rules and Regulations. When installed and
operated in accordance with the instructions provided in this manual, these devices comply with
current FCC regulations regarding human exposure to radio frequency radiation.
The following installation and operation restrictions apply to all Enfora Enabler II-G A-GPS
products:
• This device may only be used in fixed and mobile applications.
• Portable applications, as defined by the FCC, are prohibited.
• The use of this device for desktop and other applications where the antenna can
easily be relocated are considered by the FCC to be mobile applications.
• A separation distance of at least 20 cm (7.87 inches) between the antenna and
the body of the user and other persons must be maintained at all times
• In FIXED applications, antenna gain is limited to a maximum of 7 dBi, with a
corresponding Equivalent Isotropic Radiated Power (EIRP) of 37 dBm / 5 W.
• In MOBILE applications, antenna gain is limited to a maximum of 3 dBi, with a
corresponding EIRP of 33 dBm / 2 W.
• End products must provide instructions to ensure compliance with radio
frequency radiation exposure requirements.
• A warning label visible to all persons exposed to the antenna and identical to that
described in this manual must be displayed on or next to the antenna.
• Separate FCC approval for RF exposure compliance is required for end products
that do not meet these conditions.
Antenna gain is defined as gain in dBi (dB referenced to an isotropic radiator) minus cabling loss.
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Note: Additional care must be taken by the installer and/or user of the Enfora Enabler II-G A-GPS
products to ensure proper antenna selection and installation. Adherence to the above conditions
is necessary to comply with FCC requirements for safe operation regarding exposure to RF
radiation.
Depending upon the application and type of product into which the Enfora Enabler II-G A-GPS
module has been incorporated, specific OEM actions and responsibilities required to meet these
conditions vary. However, in all cases the primary concern is to ensure compliance with current
FCC guidelines and regulations that limit human exposure to radio frequency radiation.
Definitions
For the purpose of determining compliance with current FCC rules addressing human
exposure to radio frequency radiation, the FCC has established the following three
categories of transmitting devices:
• Portable Devices – devices where the antenna is located within 20 cm (7.87
inches) of any person, including the user, if applicable. Portable devices
operating under the authority of Part 24 (broadband PCS) are limited to a
maximum of 2 W EIRP.
• Mobile Devices – devices designed to be used in other than fixed locations and
generally such that the antenna is located at a minimum of 20 cm (7.87 inches)
from any person, including the user, if applicable. Mobile devices operating
under the authority of Part 24 (broadband PCS) are limited to a maximum of 2 W
EIRP.
• Fixed devices – devices in which the antenna, either integral to the product or
remotely located, is physically secured at one location and is not able to be easily
moved to another location.
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14.8.1 OEM Responsibilities for All Products Containing the Enabler II-G A-GPS module
In addition to any other regulatory requirements, OEMs and integrators must include or provide
the following information, instructions, warnings and labels with any device or product into which
the Enfora Enabler II-G A-GPS PCS-1900 GSM transceiver has been incorporated:
Information Description
Detailed
Operating
Instructions for
ensuring
compliance with
current FCC
guidelines which
limit human
exposure to radio
frequency
radiation
The OEM must provide an operating/installation manual with the final
product which clearly indicates that these operating conditions and
restrictions must be observed at all times to ensure compliance with current
FCC guidelines which limit human exposure to radio frequency radiation.
20 cm (7.87 inch) separation distance between the antenna and all persons
must be maintained at all times for all fixed and mobile products and
applications
Portable devices and applications are prohibited unless such devices and
products are specifically authorized by the FCC
Maximum antenna gain is limited to 3 dBi* in mobile products and
applications
Maximum antenna gain is limited to 7 dBi* in fixed products and
applications.
Modifications and/or additions to the Enfora Enabler II-G A-GPS GSM
transceiver, including use of antennas with higher gain than those
authorized by the FCC, are prohibited
*dBi = antenna gain in dB relative to an isotropic radiator
Antenna
Avoidance
Label
Attach the following warning label
directly to or displayed next to the
antenna. Furthermore, this label must
be visible to and easily readable by all
persons in the immediate vicinity of the
antenna
WARNING
To comply with FCC RF
exposure requirements, a
separation distance of 20 cm
(7.87”) or more must be
maintained between this
antenna and all persons
Human Exposure
Compliance
Statement
Include the following statement in the
instruction / operation manual. Enfora certifies that the Enfora
Enabler II-G A-GPS ™ MHz
GSM Radio Module (FCC ID:
MIVMLG0208) complies with the
RF hazard requirements
applicable to broadband PCS
equipment operating under the
authority of 47 CFR Part 24,
Subpart
E of the FCC Rules and
Regulations.
This certification is contingent
upon installation, operation and
use of the
Enfora Enabler II-G A-GPS
module and its host product in
accordance with all instructions
provided to both the OEM and
end used. When installed and
operated in a manner consistent
with the instructions provided,
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the Enfora Enabler II-G A-GPS
module meets the maximum
permissible exposure (MPE)
limits for general population /
uncontrolled exposure at defined
in Section 1.1310 of the FCC
Rules and Regulations.
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14.8.2 Specific OEM Responsibilities for Portable Products and Applications
Each device or product, into which the Enfora Enabler II-G A-GPS PCS-1900 GSM transceiver
has been incorporated, and which is intended to be used in an application that meets the
definition of "portable" MUST be separately authorized by the FCC for the purposes of
determining compliance with current FCC guidelines limiting human exposure to radio frequency
radiation.
Portable devices must be evaluated for RF exposure based on Specific Absorption Rate (SAR)
limits; further information on such evaluations are available from the FCC via the Internet.
14.8.3 Specific OEM Responsibilities for Mobile Products and Applications
Separate or additional FCC approvals are NOT required for devices or products, into which the
Enfora Enabler II-G A-GPS PCS-1900 GSM transceiver has been incorporated, that are used in
applications that meet the definition of "mobile."
For all end products, the OEM or integrator must provide instructions, warnings and labels to
ensure that the product complies with current FCC guidelines limiting human exposure to radio
frequency radiation.
Current FCC regulations limit the EIRP of mobile devices to 2 W. Because the nominal RF output
power of the Enfora Enabler II-G A-GPS PCS-1900 GSM transceiver is 1.0 W (30 dBm), antenna
gain for mobile products and applications cannot exceed 3 dBi.
14.8.4 Specific OEM Responsibilities for Fixed Products and Applications
Separate or additional FCC approvals are not required for devices or products, into which the
Enfora Enabler II-G A-GPS GSM transceiver has been incorporated, that are used in applications
that meet the definition of "fixed.”
For all end products, the OEM or integrator must provide the instructions, warnings and labels to
ensure that the product complies with current FCC guidelines limiting human exposure to radio
frequency radiation.
Separate or additional FCC approvals are required for devices or end products used in fixed
applications where antenna gain in excess of 7dBi is desired.
14.9 Nationally Recognized Testing Laboratory (NRTL) Approval
The Enfora Enabler II-G A-GPS module has been tested by an NRTL and approved as a
component for incorporation into OEM products. The final product and application that
incorporates the Enfora Enabler II-G A-GPS module will require separate verification of product
safety approval.
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14.10 EMC/Safety Requirements for the Countries of the European Union (EU)
The European Union (EU) is comprised of fifteen countries that follow a harmonized set of
standards, utilizing the CE mark as a uniform mark of acceptance. The member countries are:
• Austria
• Belgium
• Denmark
• Finland
• France
• Germany
• Greece
• Ireland
• Italy
• Luxembourg
• The Netherlands
• Portugal
• Spain
• Sweden
• United Kingdom
14.11 EMC/Safety Requirements for Other Countries
In most other countries that have not been listed above there are similar rules and regulations
that must be met for importing the Enfora Enabler II-G A-GPS module. Each may require a
different mark of approval (for example, the CB Scheme) as an acceptance requirement. For
each of these cases the country should identified, and the appropriate steps should be taken to
meet the requirements set forth in the intended market.
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15.0 APPENDIX C - Glossary and Acronyms
A-GPS Assisted GPS
API Application Programming Interface.
App Application Refers to the Application which sends or receives commands/responses
from the Enfora Enabler II-G A-GPS Module
AT Command Set Commands issued by intelligent device to a modem to perform functions,
such as to initiate call, to answer call, or to transmit data.
BER
Bit Error Rate Bit Error Rate
CMUX Multiplexer protocol that operates between an MS and a TE and allows a
number of simultaneous sessions over a normal serial asynchronous
interface
CPE
Customer Premise
Equipment
A terminal in fixed location on the customer’s premises.
CSD
Circuit Switched Data Data link from a terminal through the network allowing real-time, duplex
connectivity at 9600 bytes/second.
Dbi Decibels referenced to an isotropic radiator
DCE
Data Communications
Equipment
Data Communications Equipment
DCS
Digital Cellular System A collection of services and capabilities providing flexibility of access and
mobility through a combination of wireless and wire-line networks, utilizing
the 1800 MHz bandwidth.
DTE
Data Terminal Equipment Data Terminal Equipment
EFR
Enhanced Full Rate Voice (vocoder) compression algorithms which offer the highest quality
voice communication.
EIR
Equipment Identity Register A database used to store International Mobile Equipment Identity (IMEI) of
a locally issued terminal.
EIRP
Equivalent Isotropic
Radiated
Power
In a given direction, the gain of a transmitting antenna multiplied by the net
power accepted by the antenna from the connected transmitter.
EMC
Electromagnetic
Compatibility
The ability of a device to function satisfactorily in its electromagnetic
environment without inducing intolerable disturbance to that environment
(or to other devices)
ESD
Electrostatic Discharge Static electricity that can damage electronic equipment.
EU
European Union An organization of 15 European states whose purpose is to organize
relations between the Member States and between their peoples.
FTA
Full Type Approval GSM Full Type Approval
GPRS
General Packet Radio
Service
Standard for packet communications utilizing Global Standard for Mobility
(GSM) infrastructure.
GPS Global Positioning System
GSM
Global System for Mobile
Communications
Standard for digital communications. Allows consistent communications in
various parts of the world despite variations in RF spectrum allocations.
Transferring the SIM (see below) permits users to roam by changing
terminal equipment.
HLR
Home Location Register Stores the identity and user data for all subscribers belonging to the area
of the related MSC.
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IMEI
International Mobile
Equipment Identity
A unique number for each GSM Terminal tracked by the GSM operators in
their Equipment Identity Register (EIR) database.
IMSI
International Mobile
Subscriber Identification
A unique number identifying the subscriber stored in the SIM card.
Number is used in conjunction with the network for call routing.
Ki A secret code used in authentication and encryption by the terminal.
MO
Mobile Originated Any GSM/GPRS service originated at the mobile terminal.
MT
Mobile Terminated Any GSM/GPRS service originated from or routed through the network
and sent to the mobile terminal.
MSC
Mobile Switching Center The central switch of the GSM network. Performs call routing, collects call
detail records for billing, and supervises system operations.
Non-Transparent Mode Delivers a constantly low error rate but with a non-guaranteed throughput
or delay. The Non-Transparent service provides a performance that is
closest to using a modem over a fixed PSTN line.
NRTL
Nationally Recognized Test
Laboratory
OSHA-approved Nationally Recognized Testing Laboratory
OEM Original Equipment Manufacturer.
PA Power Amplifier.
Packet A collection of data transmitted over a digital network in a burst.
PCS Personal Communication Services.
PDA Personal Digital Assistant.
PDU Packet Data Unit.
PPP Point-To-Point Protocol.
SIM Subscriber Identity Module.
SMS Short Message Service.
SMSC Short Message Service Center.
UDP User Datagram Protocol.
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16.0 APPENDIX D – Tables and Figures
TABLES
Table 1 - Enabler II-G Key Features .............................................................................................12
Table 2 - Enabler II-G A-GPS Pin Assignments............................................................................ 31
Table 3 - Modem Library Configurations ....................................................................................... 61
FIGURES
Figure 1 - PAD Architecture........................................................................................................... 13
Figure 2 – UDP API Architecture................................................................................................... 14
Figure 3 - Assisted GPS Architecture............................................................................................15
Figure 4 Enabler II-G A-GPS Module Block Diagram ................................................................... 20
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Figure 5 Enabler II-G Package Dimensions (without integrated SIM carrier)......................... 26
Figure 6 Enabler II-G Package Dimensions (with integrated SIM carrier) .................................... 27
Figure 7 Vertical Enabler II-G Mounting........................................................................................ 29
Figure 8 Enabler II-G Mounting Tabs ........................................................................................... 29
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Figure 9 Module Pin Orientations.................................................................................................. 30
Figure 10 Ring Indicate Timing...................................................................................................... 35
Figure 9 External Power Control Signal (no external processor).................................................. 36
Figure 10 External Power Control Signal (using external RC circuit)............................................ 37
Figure 11 Power Control Signal (using external processor).......................................................... 38
Figure 12 Typical Power On Sequence (using external processor).............................................. 39
Figure 13 Power Down/Reset (using external processor)............................................................. 40
Figure 11 Enabler II-G A-GPS Module Serial Interface with Dedicated Serial Port and GPS Port42
Figure 12 Enabler II-G A-GPS Module Serial Interface with Mux Serial Port and Debug............. 43
Figure 13 Enabler II-G A-GPS Module Serial Interface with Mux Serial Port and Debug............. 44
Figure 14 Audio Reference............................................................................................................ 48
Figure 15 Remote SIM Interface ................................................................................................... 50
Figure 16 UDP-API Structure ........................................................................................................ 58
Figure 17 Library Layout................................................................................................................ 60
Figure 18 Using Port Library.......................................................................................................... 61
Figure 19 Using Messaging Library...............................................................................................61
Figure 20 Using Modem Library .................................................................................................... 63
Figure 21 HyperTerminal Definition............................................................................................... 64
Figure 22 COM Port Settings ........................................................................................................ 65
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17.0 APPENDIX E - Contacting Enfora
For technical support and customer service dealing with the modem itself,
contact the company where you purchased the product. If you purchased the
product directly from Enfora, visit the SUPPORT page on the Enfora website:
http://www.enfora.com.

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