Specifications | Enfora MLG0208PB001 Modem User Manual

MLG0208PB001
Enfora Enabler II-G Assisted GPS
Integration Guide
Version: 1.01
Enfora, Inc.
661 E. 18th Street Plano Texas 75074
www.enfora.com
Enfora Enabler II-G Assisted GPS
Modem Integration Guide
Document Title:
Enfora Enabler II-G Assisted GPS Integration Guide
Version:
1.01
Date:
10/3/06
Status:
Released
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, Inc. Enfora, Inc. 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, Inc.
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, Inc. 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, Inc.
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, Inc. All rights reserved.
Enabler and Spider are either registered trademarks or trademarks of Enfora, Inc. in the United
States.
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Modem Integration Guide
Table of Contents
1.
Safety Precautions............................................................................................................................... 1
1.1.
2.
3.
Important Safety Information ...................................................................................................... 1
Regulatory Compliance FCC .............................................................................................................. 1
2.1.
Integration Considerations and Installation Requirements ..................................................... 1
2.2.
Disclaimer...................................................................................................................................... 3
Manual Overview.................................................................................................................................. 4
3.1.
Revision History ........................................................................................................................... 4
3.2. Reference Documents.................................................................................................................. 5
3.2.1. Enfora Enabler II-G A-GPS Product Documentation .............................................................. 5
3.2.2. Enfora Enabler II-G Product Documentation........................................................................... 5
3.2.3. GSM Device Specifications ..................................................................................................... 6
3.2.4. US Government....................................................................................................................... 6
3.2.5. Federal Communications Commission (FCC)......................................................................... 6
3.2.6. FCC Office of Engineering and Technology (OET)................................................................. 6
3.2.7. Environmental Regulations ..................................................................................................... 6
3.2.8. Mechanical Specifications ....................................................................................................... 7
3.2.9. RF and EMI Specifications ...................................................................................................... 7
4.
5.
Introduction .......................................................................................................................................... 8
4.1.
Product Overview ......................................................................................................................... 8
4.2.
Key Features of the Assisted GPS Module................................................................................ 8
4.3.
Providing Multi-Band Operation ................................................................................................. 9
4.4.
Wireless Data Application Possibilities ..................................................................................... 9
4.5.
GSM/GPRS System Overview ................................................................................................... 10
4.6.
Assisted GPS System Overview ............................................................................................... 12
4.7.
Summary of Features for the Enabler II-G A-GPS Module ..................................................... 13
4.8.
General layout guidelines for Enfora GSM modules .............................................................. 15
Technical Specifications ................................................................................................................... 16
5.1.
Enabler II-G A-GPS Module Block Diagram ............................................................................. 16
5.2.
Detailed Product Specifications................................................................................................ 17
Climatic: Storage and Transportation ................................................................................................. 17
Mechanical: Storage and Transportation............................................................................................ 17
Mechanical: Proposed Standards........................................................................................................ 17
Electromagnetic Emissions ................................................................................................................. 17
5.3. Operating Power ......................................................................................................................... 18
5.3.1. GSM Operating Power .......................................................................................................... 18
5.3.2. GPRS Operating Power ........................................................................................................ 18
5.3.3. GSM Transmit Power ............................................................................................................ 18
5.3.4. GSM Receiver Sensitivity...................................................................................................... 19
5.3.5. GPS Operating Power........................................................................................................... 19
5.3.6. GPS Receiver Sensitivity ...................................................................................................... 19
5.3.7. Enabler Remote On (Pin 24) ................................................................................................. 19
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6.
Physical Interfaces ............................................................................................................................ 20
6.1.
Physical Layout ................................................................................Error! Bookmark not defined.
6.2.
Module Pin Orientation Reference............................................................................................ 22
6.3. Connectors.................................................................................................................................. 22
6.3.1. Enabler II-G A-GPS I/O Control Connector........................................................................... 22
6.3.2. PCB Integration I/O Control Connector ................................................................................. 22
6.3.3. I/O Connector Pin Assignments ............................................................................................ 23
6.4.
Circuit Protection........................................................................................................................ 24
6.5. Antenna ....................................................................................................................................... 24
6.5.1. Antenna Solder Pads ............................................................................................................ 25
6.5.2. GSM Antenna Connector ...................................................................................................... 25
6.5.3. GPS Antenna Connector....................................................................................................... 25
6.6. Control Connector Signal Descriptions and Functions ......................................................... 26
6.6.1. Input Power ........................................................................................................................... 26
6.6.2. Ring Indicate.......................................................................................................................... 27
6.6.3. Using the Power Control Signal ............................................................................................ 27
6.6.4. Reset (Pin 22)........................................................................................................................ 32
6.6.5. Using VBAK........................................................................................................................... 32
6.6.6. Serial Interface for UART and GPS....................................................................................... 33
6.6.7. Dedicated Serial Interface ..................................................................................................... 34
6.6.8. General Purpose Input/Output .............................................................................................. 35
6.6.9. Analog-To-Digital Input.......................................................................................................... 35
6.6.10. Digital-To-Analog Output....................................................................................................... 35
6.6.11. Handset Microphone Input .................................................................................................... 35
6.6.12. Handset Speaker Output....................................................................................................... 36
6.6.13. Headset Microphone Input .................................................................................................... 36
6.6.14. Headset Speaker Output....................................................................................................... 36
6.6.15. Audio Design Note ................................................................................................................ 37
6.7. Subscriber Identity Module (SIM) Carrier................................................................................. 38
6.7.1. SIM Integration for the Enfora Enabler II-G A-GPS Module ................................................. 38
6.7.2. Using a Remote SIM with the Enfora Enabler II-G A-GPS Module ...................................... 38
6.7.2.1.
Remote SIM Component Information......................................................................... 39
7.
8.
9.
GSM/GPRS Modes of Operation....................................................................................................... 40
7.1.
Enabling the Transmission Modes for the GSM/GPRS Services .......................................... 40
7.2.
Voice Communication................................................................................................................ 40
7.3.
Circuit-Switched Data ................................................................................................................ 40
7.4.
SMS: Short Message Services .................................................................................................. 41
GPS Modes of Operation................................................................................................................... 42
8.1.
Autonomous................................................................................................................................ 42
8.2.
Mobile Based...............................................................................................................................42
8.3.
Enhanced Autonomous ............................................................................................................. 43
SIM Operation..................................................................................................................................... 45
9.1.
Provisioning the SIM .................................................................................................................. 45
9.2.
GSM Services Supported by the Enfora Enabler II-G A-GPS Module ................................... 45
9.3.
GPRS Services Supported by the Enfora Enabler II-G A-GPS Module ................................. 45
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9.4.
10.
Selecting the GSM Modes of Operation ................................................................................... 46
Software Interface .......................................................................................................................... 46
10.1.
Software Interface ................................................................................................................... 46
10.2.
Format for the AT Commands ............................................................................................... 47
10.3.
Enfora AT Command Set........................................................................................................ 48
10.4.
Enfora Packet Application Programming Interface............................................................. 48
10.4.1. UDP-API Architecture............................................................................................................ 48
10.5.
Enfora Modem Control Library Architecture........................................................................ 50
10.5.1. Using Port Library.................................................................................................................. 51
10.5.2. Using Messaging Library....................................................................................................... 51
10.5.3. Using Modem Library ............................................................................................................ 53
11.
Setup and Initialization .................................................................................................................. 53
11.1.
General Setup.......................................................................................................................... 53
11.1.1. HyperTerminal Configuration for Enabler II-G A-GPS module ............................................. 53
11.1.2. Initialization (AT Command Interface)................................................................................... 55
11.1.3. Initial Response to the AT Command ................................................................................... 56
11.1.4. Sending an Initialization String to the Enfora Enabler II-G A-GPS Module .......................... 56
11.1.5. Setting Up the Communication Mode for the Enfora Enabler II-G A-GPS Module............... 57
11.1.6. Querying the Status of the Enfora Enabler II-G A-GPS Module ........................................... 58
11.1.7. Setting Module Reporting Parameters for GSM and GPRS ................................................. 58
11.2.
GSM/SMS Examples ............................................................................................................... 58
11.2.1. Initialize the Enfora Enabler II-G A-GPS Module to Send and Receive SMS Text Messages
58
11.2.2. Managing SMS Messages .................................................................................................... 58
11.2.3. Data Call Configuration ......................................................................................................... 58
11.2.4. Voice Call Configuration........................................................................................................ 58
11.3.
GPRS Packet Examples ......................................................................................................... 58
11.3.1. GPRS ATTACH and ACTIVATE ........................................................................................... 58
11.3.2. Windows PPP Setup ............................................................................................................. 58
11.4.
GPS Examples......................................................................................................................... 58
11.4.1. Autonomous Mode ................................................................................................................ 58
11.4.2. Mobile Based Mode............................................................................................................... 59
11.4.3. Enhanced Autonomous Mode ............................................................................................... 59
12.
Integration and Testing.................................................................................................................. 60
12.1.
Integrating the Enfora Enabler II-G A-GPS Module ............................................................. 60
13.
APPENDIX A - Warranty Repair and Return Policy .................................................................... 63
14.
APPENDIX B - Regulations and Compliance .............................................................................. 65
14.1.
GCF/PTCRB Approval (Formerly FTA).................................................................................. 65
14.2.
Electromagnetic Compatibility (EMC) and Safety Requirements ...................................... 65
14.3.
EMC/Safety Requirements for the USA ................................................................................ 65
14.4.
Human Exposure Compliance Statement ............................................................................ 66
14.5.
Compliance with FCC Regulations ....................................................................................... 66
14.6.
Unintentional Radiators, Part 15 ........................................................................................... 67
14.7.
Intentional Radiators, Part 22 & 24........................................................................................ 67
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14.8.
Instructions to the Original Equipment Manufacturer (OEM)............................................. 68
14.8.1. OEM Responsibilities for All Products Containing the Enabler II-G A-GPS module............. 70
14.8.2. Specific OEM Responsibilities for Portable Products and Applications ................................ 71
14.8.3. Specific OEM Responsibilities for Mobile Products and Applications................................... 71
14.8.4. Specific OEM Responsibilities for Fixed Products and Applications..................................... 71
14.9.
EMC/Safety Requirements for the Countries of the European Union (EU)....................... 72
14.10.
EMC/Safety Requirements for Other Countries................................................................... 72
15.
APPENDIX C - Glossary and Acronyms....................................................................................... 73
16.
APPENDIX D – Tables and Figures .............................................................................................. 75
17.
APPENDIX E - Contacting Enfora ................................................................................................. 76
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1. 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 onto 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. 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.
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•
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
or operating in conjunction with any
other antenna or transmitter. Failure to observe
this warning could produce an RF exposure
condition.
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. 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
9/18/2006
10/3/2006
Rev
1.00
1.01
MLG0208PB001
Author
Tom Cone
Description
Initial Release
Edited GPS Receiver Sensitivity values; Edited Figure 13 to
reflect “GPS NMEA OUTPUT DATA;” Section 12.1, edited
GPS sensitivity; Added Sunridge connector information to
sections 6.5.2 and 6.5.3; Edited section 5.3.6.; Edited Figure
4, Host Board Layout
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3.2. Reference Documents
3.2.1.
Enfora Enabler II-G A-GPS Product Documentation
Overview
• MLG0208PB001MAN - Enfora Integrated GSM/GPRS A-GPS Module Overview
Manuals
• MLG0208PB002MAN - Enfora GSM/GPRS A-GPS Module AT Command Set Reference
Application Notes
• MLG2000AN001 - Enabler-IIG A-GPS Functional Description
• MLG2000AN002 - Enabler-IIG A-GPS External LNA Design Guidelines for Active
Antennas
• MLG2000AN003 - Enabler-IIG A-GPS Data Access Methods
• MLG2000AN004 - Enabler-IIG A-GPS Modes of Operation
3.2.2.
Enfora Enabler II-G Product Documentation
Overview
• GSM1000PB001MAN - Enfora Integrated GSM/GPRS Module
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
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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
• GSM0000TN012 – Enabler II-G Engineering Mode Command Reference
• GSM0000TN013 – Enabler II-G and IIE CMUX Description
White Papers
• GSM0000WP001 - Enabler-G Differentiation Features
• GSM0000WP002 - Using Enfora UDP API Versus CMUX Protocol
3.2.3.
GSM Device Specifications
• 3GPP TS 51010-1 (850, 900,1800,1900 MHz devices)
To view the latest release go to:
http://www.3gpp.org/ftp/Specs/html-info/51010-1.htm
3.2.4.
US Government
3.2.5.
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
•
•
3.2.6.
Subpart J--Equipment Authorization Procedures
Section 2.925
FCC Office of Engineering and Technology (OET)
Internet: http://www.fcc.gov.oet/
3.2.7.
•
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"
Environmental Regulations
•
National Environmental Policy Act (NEPA) of 1969 (Part 1, Subpart 1)
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3.2.8.
Mechanical Specifications
•
•
•
•
•
•
•
3.2.9.
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
RF and EMI Specifications
•
•
•
•
•
ETSI Standards
EN 61000-4-6
EN 61000-4-3
3GPP TS 51.010-1, Section 12.2
EN 55022 Class B
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4. 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 Global Positioning System (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.
Interface
Power
Radio Features
Data input/output interface
Primary serial port
Secondary serial port
Voice
60 position
V.24 protocol, 3V levels
V.24 protocol, 3V levels
Supports four vocoder modes: full-rate (FR),
enhanced full-rate (EFR), half-rate (HR), and
adaptive multi-rate (AMR)
ultra Miniature Coaxial Interconnect
Enfora Packet API, GSM AT command set
Optional 1.8/3 V mini-SIM carrier and interface on
board
Accessible via the 60-pin connector
3.3 to 4.5 Vdc
Refer to the Operating Power table in the
Technical Specifications for peak currents and
average power dissipation for various modes of
operation.
EGSM 900, GSM1800, GSM 850 and GSM 1900
capability.
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).
Antenna Interface
Command protocol
Subscriber Identification Module
(SIM)
Optional remote SIM
Electrical power
Peak currents and average
power dissipation
Frequency bands
GSM/GPRS features supported
Regulatory
•
•
•
•
•
•
Agency approvals
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GCF Type Approval
PTCRB Type Approval
FCC Certification
RTTE
CE (European Community Certification)
IC (Industry Canada) Approval
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GSM/GPRS
Functionality
GPS
Functionality
SIM
•
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
14 Channel GPS receiver
Embedded Global Locate Assisted GPS functionality
1.8/3 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 850/1900 MHz radio bands are available for integration and deployment for use
worldwide, with 850/1900 MHz support primarily in North America and regions where the
1900 MHz Personal Communication Services (PCS) band is allocated. The Enfora Enabler
II-G A-GPS 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.
The device also has a GPS receiver at 1575.42MHz. This allows the device to receive location
and time data from the GPS satellites orbiting the earth enabling location information for the
module.
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)
• Machine to Machine communication (M2M)
• Telematics
• Telemetry
• Wireless Security
• Location-Based Services (LBS)
• Proximity detection
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Figure 1 – UDP API Architecture
4.5. GSM/GPRS System Overview
The Enfora Enabler II-G A-GPS 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 II-G A-GPS to systems that require construction, operation, maintenance, and expense of a
private network.
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Figure 2 - PAD Architecture
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4.6. Assisted GPS System Overview
Normally, the GPS receiver provides a position with latitude and longitude information after it decodes
ephemeris data of the satellites in view. The process of searching for satellites, and decoding its
ephemeris can take anywhere from tens of seconds to hundreds of seconds. To speed up this
process, assistance data containing satellite ephemeris can be downloaded to the Enfora Enabler IIG A-GPS module to aid in a faster time to first fix (TTFF) with a higher precision of accuracy.
The Enfora Enabler II-G Assisted GPS (A-GPS) module provides a compelling integrated module
approach to providing A-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.
For additional detail regarding the various GPS modes available, see MLG0208AN001 - Assisted
GPS Module Modes of Operation.
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4.7. 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................................... 46.0 mm x 30.2 mm x 3.1 mm
Weight .......................................... < 10g
Packet Data Transfer:
Protocol
GPRS Release 97 and 99
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 ....................................... 14 Channels
Output........................................... NMEA 0183 data
Modes Supported......................... Autonomous, Mobile Based, Enhanced Autonomous
GSM/GPRS Radio Performance Multi-Band:
MLG0208 Radio Frequencies ...... 850 MHz, 900 MHz, 1800 MHz, and 1900 MHz
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 .............. 1575.42 MHz
Sensitivity ..................................... -158 dBm (with assistance data)
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 1.8/3-Volt SIM Capability
Environmental:
Compliant Temperature .............. -20 °C to 60 °C (Fully GSM Spec Compliant)
Operating Temperature ………….-30 °C to 70 °C
Storage Temperature ................... -40 °C to 85 °C
Humidity ....................................... 5 to 95% non-condensing
EMC:
Emissions ..................................... FCC Parts 15,22 & 24, Class B
3GPP TS 51010-1, Section 12.2
EN 55022 Class B
Operating Power (TYPICAL):
GSM Operation
GSM 850/900 (1 RX/1 TX, full power)………..254 mA average, 1.6 A peak
GSM 1800 (1 RX/1 TX, full power)……………212 mA average, 1.2 A peak
GSM 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
GSM 1800 (4 RX/1 TX, full power)…………………244 mA average, 1.2 A peak
GSM 1800 (2 RX/2 TX, full power)
350 mA average, 1.2 A peak
GSM 1900 (4 RX/1 TX, full power)………………...232 mA average, 1.4 A peak
GSM 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........................................ ……………. 106 mA average
Acquisition .................................... ……………. 116 mA average
Time to First Fix (cold start)………................... 60 seconds (typical)
Time to First Fix (warm start)…… ................... 35 seconds (typical)
Time to First Fix (hot start)……….................... 3 seconds (typical)
GPS Receiver Sensitivity (Typical)
1.5 GHz ........................................ -142 dBm, without assistance data
1.5 GHz ........................................ -158 dBm, with assistance data
4.8. General layout guidelines for Enfora GSM modules
To ensure lowest possible EMI emission, maximum thermal conduction and mechanical integrity, all
metal tabs on the GSM module shield must be soldered down on to a continuous ground plane. The
PCB trace that feeds the RF output port should be 50ohm characteristic impedance, coplanar, or
routed into internal layers to keep the top layer continuous around and underneath the device.
Provide ample ground vias around metal tabs, the RF trace and launch pad. If possible, keep I/O and
power traces away from the RF port.
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5. Technical Specifications
5.1. Enabler II-G A-GPS Module Block Diagram
Power
Audio
Analog
Baseband /
Power Mgnt
GPRS
Ant.
Interface
RF Interface
GPRS
RF
SIM
GPIO
Quad-Band PA
Digital
Baseband
CPU
GPS
BB
RF
Interface
GPS
Ant.
Interface
GPS
RF
Serial
Interface
SRAM /
FLASH
TCXCO
Figure 3 Enabler II-G A-GPS Module Block Diagram
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5.2. Detailed Product Specifications
Physical Dimensions and Weight
Size (L x W x H)
46.0 mm x 30.2 mm x 3.1 mm
Weight
(Less than 10 g)
Climatic: Operational
GSM Compliant temperature
Operating temperature
-20°C to +60°C
-30°C to +70°C
Relative humidity
5 - 95%
Solar radiation
Air pressure (altitude)
Not Applicable
70 kPa to 106 kPa (-400 m to 3000 m)
Climatic: Storage and Transportation
Duration
Ambient temperature
Relative humidity
Thermal shock
Altitude
24 months
-40C to +85C
5% to 95%, non condensing (at 40C)
-50C to +23C, +70C to +23C; < 5 min
-400 m to 15,000 m
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
Mechanical: Storage and Transportation
Transportation vibration, packaged
Drop, packaged
Shock, un-packaged
Drop, un-packaged
ASTM D999
ASTM D775 method A, 10 drops
150 m/s2 , 11 ms, half-sine per IEC 68-2-27
4-inch drop per Bellcore GR-63-CORE
Mechanical: Proposed Standards
Transportation
Operational
Storage
ETSI Standard ETS 300 019-1-2 Class 2.3
Transportation
ETSI Standard ETS 300 019-1-3 Class 3.1
Operational
ETSI Standard ETS 300 019-1-1 Class 1.2
Storage
Electromagnetic Emissions
Radiated spurious
FCC Part 22 & 24 / Part 15 Class \ B
3GPP TS 51.010-1 Section 12.2
EN 55022 Class B
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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
GSM 1800
GSM
1 TX 1 RX
1 RX
Idle
212 mA
104 mA
< 5 mA
1.2 A @ 29.5 dBm
GSM 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
GSM 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
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5.3.4.
GSM Receiver Sensitivity
Enfora Enabler II-G A-GPS
module
Sensitivity
1900 MHz
1800 MHz
900 MHz
850 MHz
-106 dBm (typical)
5.3.5.
Mode
GPRS Coding Scheme 1 (CS1)
-106 dBm (typical)
GPRS Coding Scheme 1 (CS1)
GPS Operating Power
GPS Mode
Typical Current (mAmps)
Tracking
Acquisition
106 mA
116 mA
5.3.6.
GPS Receiver Sensitivity
Enfora Enabler II-G A-GPS
module
Sensitivity
Mode
1500 MHz
1500 MHz
-142 dBm without assistance data
-158 dBm with assistance data
Acquisition
Tracking
5.3.7.
Enabler Remote On (Pin 24)
Low is modem OFF. High is modem ON.
Radio Power/Reset
VIL
VIH
MLG0208PB001
Parameter/Conditions
Input Voltage - Low
Input Voltage - High
19
MIN
-0.5
2.0
TYP
MAX
0.9
3.4
UNIT
Vdc
Vdc
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6. Physical Interfaces
6.1. Host Board Layout
Figure 4 Enabler II-G Host Board Layout
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Figure 5 Enabler II-G Package Dimensions (with integrated SIM carrier)
•
•
•
•
•
Use 46.0 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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6.2. Module Pin Orientation Reference
59
60
.
.
.
.
.
.
.
.
.
.
.
.
25 23 21 19 17
26 24 22 20 18
15
16
13
14
11
12
9
10
7
8
5
6
3 1
4 2
Figure 6 Module Pin Orientations
6.3. Connectors
6.3.1.
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.
6.3.2.
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.
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6.3.3.
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
#
1
FUNCTION
Power Input
P
ENABLER II-G AGPS
Batt/Vcc
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
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
Ground
Ground
Handset Speaker (-)
Power Input
Ground
Power Input
Handset Speaker (+)
GPIO-1
Ground
Ground
Microphone Bias
GPO-5
Ground
Reserved
Handset Microphone (-)
Reset
Ground
Power Control Signal
Handset Microphone (+)
Reserved
GPIO-3
GPIO-2
AUX_RXOUT
GPIO-4
AUX_TXIN
GPIO-6
Ground
GPIO-7
DAC
R
R
O
P
R
P
O
I/O
R
R
O
O
R
GND
GND
INTERNAL_SPK(-)
Batt/Vcc
GND
Batt/Vcc
INTERNAL_SPK(+)
GPIO-1
GND
GND
VMIC
GPO-5
GND
I
I
R
I
I
INT_MIC(-)
RST
GND
PWR_CTL_SIGNAL
INT_MIC(+)
I/O
I/O
O
I/O
I
I/O
R
I/O
O
GPIO-3
GPIO-2
GPS RXOUT
GPIO-4
TXIN
GPIO-6
GND
GPIO-7
DAC
36
37
38
39
40
41
42
43
44
45
46
RTC Power
Reserved
Headset Earphone (+)
GPIO-8
Headset Microphone (-)
Ground
Headset Microphone (+)
Serial Receive Data
Ground
Data Set Ready
ADC2
I
VBAK
O
I/O
I
R
I
O
R
O
I
HEADSET_SPK(+)
GPIO-8
HEADSET_MIC(-)
GND
HEADSET_MIC(+)
RXD_RADIO
GND
DSR_RADIO
ADC2
47
48
49
Data Carrier Detect
SIM Clock
Ring Indicator
O
O
O
DCD
SIM_CLK
RI
MLG0208PB001
Serial
Pin
5
2
6
1
9
I/O
23
Description/Comments
Electrical power input to Enabler II-G A-GPS module.
Electrical power return for digital and analog grounds.
Electrical power return for digital and analog grounds.
Handset speaker output (negative).
Electrical power input to Enabler II-G A-GPS module.
Electrical power return for digital and analog grounds.
Electrical power input to Enabler II-G A-GPS module.
Handset speaker output (positive).
General-purpose Input/Output.
Electrical power return for digital and analog grounds.
Electrical power return for digital and analog grounds.
Microphone Bias.
General-purpose Output.
Electrical power return for digital and analog grounds.
Reserved for future use.
Handset microphone input (negative).
Radio Reset Signal
Electrical power return for digital and analog grounds.
Power Control Signal.
Handset microphone input (positive).
Reserved for future use.
General-purpose Input/Output.
General-purpose Input/Output.
Serial data out from modem
GPIO/MCSI TX.
Serial data in from host
GPIO/MCSI RX.
Electrical power return for digital and analog grounds.
GPIO/MCSI CLK.
Digital-to-Analog Output.
0.3 to 2.0 Vdc minimum range
Modem backup power for real-time clock.
Reserved for future use.
Headset Earphone (positive).
GPIO/MCSI FSNC.
Headset Microphone (negative).
Electrical power return for digital and analog grounds.
Headset Microphone (positive).
Serial Data to Host.
Electrical power return for digital and analog grounds.
DSR Signal to Host.
Analog-to-Digital Converter Input 2.
0 – 1.75 Vdc range. 1.709 mV resolution. 10 bit.
DCD Signal.
SIM Clock.
RING Indicator.
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50
51
52
53
54
55
56
Ground
Serial Transmit Data
SIM I/O
Request To Send
SIM Reset
Clear To Send
ADC1
57
58
59
60
Data Terminal Ready
SIM Power
Reserved
Ground
3
7
8
4
R
I
I/O
I
O
O
I
GND
TXD_RADIO
SIM_IO
RTS_RADIO
SIM_RST
CTS_Radio
ADC1
I
O
R
R
DTR_RADIO
SIM_VCC
Do Not Connect
GND
Electrical power return for digital and analog grounds.
Serial Data from Host.
SIM I/O Data.
RTS Signal from Host.
SIM Reset.
CTS Signal to Host.
Analog-to-Digital Converter Input 1.
0 – 1.75 Vdc range. 1.709 mV resolution. 10 bit.
DTR Signal to Host.
SIM Power.
.
Electrical power return for digital and analog grounds.
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. Pin 18 is now General Purpose Output for
the MLG0208-xx. In prior modules like the GSM0108-xx, 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
The MLG0208-xx module has two antenna connections on the module. The connections are
for the GSM section of the module and the GPS section of the module. A custom quad-band
antenna can be attached via the on-board RF 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.
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The SDK117 has three antenna cables. One cable is for connection to the RF connector for
quad band GSM/GPRS antenna. The second RF cable is for a passive PCB patch antenna
that can be used for the GSM/GPRS antenna. The third antenna is for the passive GPS patch
antenna.
However, if the GPS antenna is more than 10 cm away from the module (a likely scenario),
one should consider using an active GPS antenna. An active antenna has an integrated low
noise amplifier (LNA) and needs power to activate this circuit and for the antenna to work.
For optimum operation, the maximum in band input RF level into the Enfora Enabler II-G AGPS GPS antenna port should not exceed –95 dBm. If this condition exceeds, the
subsequence analog gain stage in the GPS chip set may saturate causing degradation in
overall system performance. Out of band RF level in excess of –70 dBm at the antenna port
may also cause system degradation. Because most active antenna do not provide out of band
rejection with a high Q filter, end users should take special precaution in selecting the active
gain versus cable loss. A quality patch antenna can easily provide in band gain of 3 to 5 dBi
and out of band gain of 0 dBi, together with the LNA gain, it can boost out of band signal above
the –70 dBm range.
Please refer to MLG0208TN001 – External Active GPS Antenna Design Guide for MLG0208 AGPS Module.
6.5.1.
Antenna Solder Pads
Pads are provided to solder a cable or antenna directly to the Enabler II-G A-GPS board.
6.5.2.
GSM Antenna 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.
NOTE: For both the GSM Antenna Connector and the GPS Antenna Connector, please
refer to Figure 7 MCB2 Cable Assembly. This diagram will help you determine the
exact part number you will need to build the cable. For more detailed information, please
refer to the Sunridge website at http://www.sunridgecorp.com.
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Figure 7 MCB2 Cable Assembly
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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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.
Ring
2 seconds
1 second
2 seconds
1 second
RING String
RING String
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.
Ring
3 seconds
3 seconds
RING String
RING String
RING String
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 AGPS 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.
Ring
1 second
URC
Figure 8 Ring Indicate Timing
6.6.3.
Using the Power Control Signal
Figure 9 shows a typical connection to the Enfora Enabler II-G A-GPS 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.
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RESET
Figure 9 External Power Control Signal (no external processor)
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Figure shows a variation of the connection in Figure 9 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.
Figure10 External Power Control Signal (using external RC circuit)
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Figure shows a typical connection from an external processor to the Enfora Enabler II-G A-GPS module, using the
external PWR_CTL_SIGNAL solution. The Enfora Enabler II-G A-GPS 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.
Figure 11 Power Control Signal (using external processor)
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Figure shows a typical power on sequence for the CPU to Enfora Enabler II-G A-GPS interface. Note
that Reset is not used, and the I/O and serial voltage levels are not a concern.
RESET
Figure 12 Typical Power On Sequence (using external processor)
PARAMETER
VIL
PARAMETER / CONDITIONS
Input Voltage – Low or float
MIN
0
VIH
Input Voltage – High
0.7 x
VBAT
ON Pulse
Duration
OFF Pulse
Duration
MLG0208PB001
TYP
MAX
0.3 x
VBAT
VBAT
500
Programmable
31
1000
UNIT
Vdc
Vdc
mS
1000
0
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6.6.4.
Reset (Pin 22)
A pulse on this Active-High input resets/restarts the module. This input has a “weak
pull-up” resistor internal to the module and can be left open-circuit if it is not going to
be used. To initiate a reset, provide a high-pulse of at least 50 ms duration.
Figure 13 shows a Reset, or power down sequence using the RESET signal with the CPU to Enfora Enabler II-G AGPS 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 RESET will reset the Enfora Enabler II-G A-GPS.
RESET
Figure 13 RESET (using external processor)
6.6.5.
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.
PARAMETER
PARAMETER / CONDITIONS
Backup Voltage (Real-Time-Clock)
VBACKUP
IBACKUP
MLG0208PB001
Backup Voltage for Real-Time-Clock
Input Current (VBACKUP = 3.2 V, VBAT = 0 V,
No Load on GPIO or Serial Port)
32
MIN
TYP
MAX
2.7
3.0
3.0
4.5
6.0
Version1.01 – 10/3/2006
UNIT
Vdc
μAdc
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Modem Integration Guide
VBAK had been tested in the above scenarios and does not contribute to leakage. It will properly
provide backup power to the RTC clock.
6.6.6.
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.
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6.6.7.
Dedicated Serial Interface
This architecture provides dedicated serial ports for exclusive processing of GPS and
network data. One port could be dedicated to communication with the wireless module and
the other could be dedicated to receive GPS data. 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:
Figure 14 Enabler II-G A-GPS Module Serial Interface with Dedicated Serial Port and GPS
Port
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6.6.8.
General Purpose Input/Output
Seven general-purpose input/output signals are provided along with one fixed output. Each of
these signals may be selected as inputs or outputs except GPIO-5, which is an output pin only.
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
VIL
VIH
VOL
VOH
IIL / IIH
IOL / IOH
6.6.9.
Parameter/Conditions
Input Voltage – Low
Input Voltage – High
Output Voltage – Low
Output Voltage – High
Input Leakage Current
Rated Output Current
MIN
-0.5
2.0
Parameter/Conditions
ADC Binary Resolution
ADC Reference Voltage
ADC Range
MIN
TYP
2.4
-1
MAX
0.9
3.4
0.64
3.0
1
2
UNIT
Vdc
Vdc
Vdc
Vdc
MAX
UNIT
Bits
Vdc
Vdc
kΩ
μA
mA
Analog-To-Digital Input
Analog-To-Digital Input
ADCBRES
ADCREF
VADC
ZADC
ADC Input Impedance
TYP
10
1.75
0
100
1.75
6.6.10. Digital-To-Analog Output
Digital-To-Analog Output
DACBRES
TS
VOMAX
Parameter/Conditions
DAC Binary Resolution
Settling Time
Output Voltage with Code
Maximum
MIN
VOMIN
Output Voltage with Code
Minimum
0.18
2.0
TYP
10
10
2.2
0.24
MAX
2.4
UNIT
Bits
μS
Vdc
0.3
Vdc
6.6.11. Handset Microphone Input
Parameter
Maximum Input Range –
Mic(+) to Mic(-)
Nominal Ref. Level –
Mic(+) to Mic(-)
Differential Input Resistance –
Mic(+) to Mic(-)
Microphone Pre-Amplifier Gain
Bias Voltage on Mic(+)
Mic Bias Current Capability
MLG0208PB001
Conditions
Inputs 3 dBm0 (Max. digital
sample amplitude when PGA
gain set to 0 dB)
MIN
TYP
32.5
MAX
UNIT
mVrms
-10
dBm0
100
kΩ
25.6
2.0 or 2.5 V
35
2.0
0
2.5
0.5
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dB
Vdc
mA
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6.6.12. Handset Speaker Output
Parameter
Maximum Swing –
Ear(+) to Ear(-)
Maximum Capacitive Load –
Ear(+) to Ear(-)
Amplifier Gain
Amplifier State in Power Down
Conditions
RL = 32 Ω & 5% distortion
MIN
1.2
TYP
1.5
MAX
UNIT
Vpp
100
pF
1
dB
High Z
Enfora recommends an external audio amplifier for loads of less than 16 Ω or if volume is
inadequate.
6.6.13. Headset Microphone Input
Parameter
Maximum Input Range –
Mic(+) to Mic(-)
Nominal Ref. Level –
Mic(+) to Mic(-)
Differential Input Resistance –
Mic(+) to Mic(-)
Microphone Pre-Amplifier Gain
Bias Voltage on Mic(+)
Mic Bias Current Capability
Conditions
Inputs 3 dBm0 (Max. digital
sample amplitude when PGA
gain set to 0 dB)
MIN
TYP
32.5
MAX
UNIT
mVrms
-10
dBm0
100
kΩ
25.6
2.0 or 2.5 V
2.0
0
dB
Vdc
mA
2.5
0.5
6.6.14. Headset Speaker Output
Parameter
Maximum Swing –
HS Spkr (+) to (-)
Maximum Capacitive Load –
HS Spkr (+) to (-)
Amplifier Gain
Amplifier State in Power Down
Conditions
RL = 32 Ω & 5% distortion
MIN
1.6
-7
TYP
1.96
MAX
UNIT
Vpp
100
pF
-5
dB
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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6.6.15. 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 15 Audio Reference
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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).
Remote SIM Power
VDD
IDD
Remote SIM Line
SIM_VDD
SIM_RST
SIM_CLK
SIM_I/O
MLG0208PB001
Parameter/Conditions
Remote SIM Supply Voltage
3 V Mode
Remote SIM Supply Current –
3V Modes
MIN
2.7
TYP
MAX
UNIT
3.3
10
Vdc
mA
Description
Remote SIM power supply
Remote SIM reset
Remote SIM clock
Remote SIM serial data interface
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<25.4 cm (10 in)
Remote SIM
Enabler II-G
A-GPS module
SIM
Interface
SIM_VD
SIM_RS
SIM_CL
SIM_I/
Figure 16 Remote SIM Interface
o
o
o
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 Suyin
P/N: 254016MA006G103ZL
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7. 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-IIG AT Command Set Reference - GSM0107PB001MAN 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. 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
The autonomous mode provides unassisted GPS data. The GPS antenna must have a clear view of
the sky in order to obtain a signal and provide GPS location data. The following commands are used
to set the feature:
Set one of the following depending on desired operation:
AT$GOPMD=1,1,0
- Sets the GPS operating mode to autonomous, the fix mode to onetime fix, and the periodic report interval to 0 (not used in one-time fix
mode)
AT$GOPMD=1,2,0
- Sets the GPS operating mode to autonomous, the fix mode to
native, and the periodic report interval to 0 (not used in native fix
mode)
AT$GOPMD=1,3,x
- Sets the GPS operating mode to autonomous, the fix mode to timed
interval, and the periodic report interval x to a value between 2 and
7200.
Set one of the following depending on desired operation:
AT$GPSLCL=0,<msgType>
AT$GPSLCL=1,<msgType>
AT$GPSLCL=2,<msgType>
AT$GPSLCL=5,<msgType>
AT&W
- Turns all local serial port reporting off, <msgType> is
not used
- Directs the GPS data of <msgType> over the main
serial port
- Directs the GPS data of <msgType> over a serial DUN
connection (PPP) as UDP/IP packets, with UDP-API
header
- Directs the GPS data of <msgType> over the second
serial port
- Writes the settings to non-volatile memory
Upon setting the configuration above, the modem will operate in autonomous mode and will stream
the selected data over the desired serial interface.
8.2. Mobile Based
The mobile-based mode provides assisted GPS data that is processed on the module to provide
more robust GPS operation. It is not necessary for the GPS antenna to have a clear view of the sky
in order to operate. In Mobile based mode, the module will download ephemeris data for the current
satellites in view based on the Cell ID. The module will send the cell ID to the assistance server and
the assistance server will return back the ephemeris data for satellites in view for those cell IDs. The
frequency for downloading this data will be approximately once every 30 minutes. Also, the number
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of bytes downloaded per connection will be less as compared to the LTO file used in the Enhanced
Autonomous mode.
The following parameters will need to be programmed in order to provide data connection parameters
to the network and location assistance server:
AT+CGDCONT=1,"IP","APN"
AT%CGPCO=1,"username,password",0
AT$AREG=2
AT$GPSDST=”1.2.3.4”,”5.6.7.8”,1265
interface
AT$GPSSRC=1270
AT$LTOFREQ=4
- Set GPRS connection with Network. APN is provided
by the network operator
- Set GPRS username and password, if any
- Automatic GPRS registration
- Set the IP addresses and port number of the SUPL
- Sets the Source Port number for the SUPL interface
- Defines how often the LTO files are downloaded from
the SUPL interface (4 hours with this setting)
Set one of the following depending on desired operation:
AT$GOPMD=2,1,0
- Sets the GPS operating mode to mobile-based, the fix mode to onetime fix, and the periodic report interval to 0 (not used in one-time fix
mode)
AT$GOPMD=2,2,0
- Sets the GPS operating mode to mobile-based, the fix mode to
native, and the periodic report interval to 0 (not used in native fix
mode)
AT$GOPMD=2,3,x
- Sets the GPS operating mode to mobile-based, the fix mode to
timed interval, and the periodic report interval x to a value between 2
and 7200.
Set one of the following depending on desired operation:
AT$GPSLCL=0,<msgType>
AT$GPSLCL=1,<msgType>
AT$GPSLCL=2,<msgType>
AT$GPSLCL=5,<msgType>
AT&W
- Turns all local serial port reporting off, <msgType> is
not used
- Directs the GPS data of <msgType> over the main
serial port
- Directs the GPS data of <msgType> over a serial DUN
connection (PPP) as UDP/IP packets, with UDP-API
header
- Directs the GPS data of <msgType> over the second
serial port
- Writes the settings to non-volatile memory
Upon setting the configuration above, the modem will operate in mobile-based mode and will stream
the selected data over the desired serial interface.
8.3. Enhanced Autonomous
The enhanced autonomous mode provides assisted GPS data that is processed on the module to
provide more robust GPS operation. The enhanced autonomous mode will utilize a Long-Term Orbit
(LTO) file. In order for the enhanced autonomous mode to function correctly, the LTO file must be
downloaded to the module. In Enhanced Autonomous mode, the module will download ephemeris
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data for the entire constellation. This data is around 30 Kbytes and would be valid for up to 48 hours.
If the LTO data file is downloaded every 4 hours, then it would only download about 2 Kbytes of data
or so. It does not download entire 30 Kbyte file every time.
The next section discusses the recommended approach for downloading the file. It is not necessary
for the GPS antenna to have a clear view of the sky in order to operate. The following commands are
used to set the feature:
The following parameters will need to be programmed in order to provide data connection parameters
to the network and location assistance server:
AT+CGDCONT=1,"IP","APN"
AT%CGPCO=1," username,password",0
AT$AREG=2
AT$GPSDST=”1.2.3.4”,”5.6.7.8”,1265
interface
AT$GPSSRC=1270
AT$LTOFREQ=4
- Set GPRS connection with Network. APN is provided
by the network operator
- Set GPRS username and password, if any
- Automatic GPRS registration
- Set the IP addresses and port number of the SUPL
- Sets the Source Port number for the SUPL interface
- Defines how often the LTO files are downloaded from
the SUPL interface (4 hours with this setting)
Set one of the following depending on desired operation:
AT$GOPMD=3,1,0
- Sets the GPS operating mode to enhanced autonomous, the fix
mode to one-time fix, and the periodic report interval to 0 (not used in
one-time fix mode)
AT$GOPMD=3,2,0
- Sets the GPS operating mode to enhanced autonomous, the fix
mode to native, and the periodic report interval to 0 (not used in native
fix mode)
AT$GOPMD=3,3,x
- Sets the GPS operating mode to enhanced autonomous, the fix
mode to timed interval, and the periodic report interval x to a value
between 2 and 7200.
Set one of the following depending on desired operation:
AT$GPSLCL=0,<msgType>
AT$GPSLCL=1,<msgType>
AT$GPSLCL=2,<msgType>
AT$GPSLCL=5,<msgType>
AT&W
- Turns all local serial port reporting off, <msgType> is
not used
- Directs the GPS data of <msgType> over the main
serial port
- Directs the GPS data of <msgType> over a serial DUN
connection (PPP) as UDP/IP packets, with UDP-API
header
- Directs the GPS data of <msgType> over the second
serial port
- Writes the settings to non-volatile memory
Upon setting the configuration above, the modem will operate in enhanced autonomous mode and
will stream the selected data over the desired serial interface.
For additional information and details on the different modes of operation, see MLG0208AN001MAN
– Assisted GPS Module Modes of Operation.
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9. 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
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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)
•
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
MO/MT
MO/MT
MO/MT
SMS
MT
MO/MT
MO/MT
CS Data
MO
MO
MO/MT
GPRS
Function
Voice calls, receive SMS, make data calls
Voice calls, receive / send SMS, make data calls
Voice calls, receive / send SMS, make / receive data
calls
(requires an additional data telephone number)
10. 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 GSMGPRS 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.
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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.
•
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>
<command>
<CR>
AT
See AT Command
Manual
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-IIG AT Command Set Reference - GSM0107PB001MAN.
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10.3.
Enfora AT Command Set
For a full description of the AT commands, refer to the Enfora Enabler-IIG AT Command Set
Reference - GSM0107PB001MAN.
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 provides the general structure for the UDP-API.
Figure 17 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 GSM0107PB001MAN 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,
Inc. response from the modem.
Bytes
0 – 19
20 – 27
28
29
30
31
32
33
34
Data
Description
IP Header
UDP Header
0x00
0x01
0x04
0x00
0x41
0x54
0x49
Comments
Sequence Number
AT Command Read/Write
Reserved
AT Command
(ATI)
Following data will be returned by the modem:
Bytes
0 – 19
20 – 27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
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Data
Description
IP Header
UDP Header
0x00
0x01
0x05
0x00
0x0D
0x0A
0x45
0x6E
0x66
0x6F
0x72
0x61
0x2C
0x20
0x49
0x6E
0x63
0x2E
0x0D
0x0A
49
Comments
Sequence Number
AT Command Response
Reserved
AT Command Response
(Enfora, Inc.)
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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 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.
Figure 18 Library Layout
UDP Modem
Library with
S
UDP Messaging
Library with
S
UDP Modem
Library with
S
UDP Modem
Library with
UDP Messaging
Library with
S
UDP Messaging
Library with
UDP Socket
Port Library
UDP PPP Port
Library
UDP SLIP Port
Library
The table below can be used to help decide which library configuration is the best for a project.
SLIP access is not currently available.
Benefits
Allows dynamic IP
assignment
Allows multiple application
to access the modem
Allow AT Commands
Allows modem control
message
Provide modem control
message formatting
Provides modem
parameters database
service
Suitable for microcontroller
programming
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
z
Requirements
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z
Requires TCP/IP stack
Memory usage
Low
Low
Low
z
Low
Low
Low
z
High
High
High
Table 3 - Modem Library Configurations
10.5.1. Using Port Library
Figure provides the architecture for Port Library access.
Figure 19 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
PPP
Header
IP Header
UDP
Header
Modem Control
Message
SLIP End
Modem Control
Message
PPP End
Or
10.5.2. Using Messaging Library
Figure provides the architecture for Messaging Library access.
Figure 20 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
PPP
Header
IP
Header
UDP
Header
Modem Control Message
SLIP End
Or
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10.5.3. Using Modem Library
Figure provides the architecture for Modem Library access.
Figure 21 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. 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 22 HyperTerminal Definition
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2. Configure the COM port as displayed below.
Figure 23 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 powerup 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
Response
AT
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
Response
Entry
Response
AT&FE0Q0V1&C1&d0
OK
ATSO=1
OK
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Command is valid
Auto answer on 1st ring
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
Response
Entry
Response
Entry
Response
AT+CFUN=1
OK
AT+COPS=0
OK
AT+CBST=7,0,1
OK
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Command is valid
Automatic operator selection
Command is valid
9600 baud, non-transparent mode
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 MLG0208AN001 - Assisted GPS Module
Modes of Operation
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11.4.2. Mobile Based Mode
This topic is addressed in the Enfora Application Note MLG0208AN001 - - Assisted GPS
Module Modes of Operation
11.4.3. Enhanced Autonomous Mode
This topic is addressed in the Enfora Application Note MLG0208AN001 - - Assisted GPS
Module Modes of Operation
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12. 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 ESDconditioned 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),
GPS test equipment or GPS repeater, 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. The GPS tester must have the ability to create a GPS a single channel from a GPS
satellite
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
SIM
Recommendations
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
Reset Interface
Audio/Microphone
Interface
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The Enfora Enabler II-G A-GPS module uses a 1.8/3 V digital interface.
The RS-232 signals must be level-shifted to get standard levels. These
signals must be ESD-protected.
Resets the Enfora Enabler II-G A-GPS module when tied low.
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
Transmitter
Receiver
Parameters to be Tested
Frequency Error
Phase Error
PA Ramp
Modulation Spectrum
RF Power Steps
Timing Advance
BER Based RX Tests (RXQUAL RXLEV)
BER Based Sensitivity
Testing the following GSM functionality verifies proper network communication.
Functionality
Transmitter
Receiver
Parameters to be Tested
Frequency Error
Phase Error
PA Ramp
Modulation Spectrum
RF Power Steps
Timing Advance
BER Based RX Tests (RXQUAL RXLEV)
BER Based Sensitivity
Testing the following GSM functionality verifies proper network communication.
Functionality
Network Function
Parameters to be Tested
Synchronization and registration
Call set-up and call termination (both MT and MO calls)
SMS and/or data calls
Testing the following GPS functionality verifies proper network communication.
Functionality
Time to First Fix
Parameters to be Tested
Synchronization with the GPS satellites and NMEA messages coming out
over the selected serial port
Antenna
Check the GPS receiver to see if one is seeing -142dBm
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13. APPENDIX A - Warranty Repair and Return Policy
ENFORA, Inc. 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, (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
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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 NONINFRINGEMENT, 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. 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/PTCRB 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 3GPP TS 51010-1. 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 standard. 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 22 & 24
•
Unintentional emission: FCC Rules, Part 15
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, Subpart E and Part 22 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 user. 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, a certified FCC test house, 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 GSM-1900 radio transmitter are regulated under Part 22 & 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 22 & 24
Products incorporating the Enfora Enabler II-G A-GPS transceiver operate as Personal
Communications Services(PCS) devices under the authority of Part 22 & 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 and Part 22 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:
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•
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 22 or 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 22 or 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 GSM1900 GSM transceiver has been incorporated:
Information
Detailed
Operating
Instructions for
ensuring
compliance with
current FCC
guidelines which
limit human
exposure to radio
frequency
radiation
Antenna
Avoidance
Label
Human Exposure
Compliance
Statement
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Description
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
Attach the following warning label
directly to or displayed next to the
WARNING
antenna. Furthermore, this label must
To comply with FCC RF
be visible to and easily readable by all
exposure requirements, a
persons in the immediate vicinity of the
separation distance of 20 cm
antenna
(7.87”) or more must be
maintained between this
antenna and all persons
Include the following statement in the
instruction / operation manual.
70
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 22 or
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,
the Enfora Enabler II-G A-GPS
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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.
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 GSM1900 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.
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14.9.
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:
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
14.10.
Austria
Belgium
Denmark
Finland
France
Germany
Greece
Ireland
Italy
Luxembourg
The Netherlands
Portugal
Spain
Sweden
United Kingdom
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. APPENDIX C - Glossary and Acronyms
A-GPS
API
App Application
AT Command Set
BER
Bit Error Rate
CMUX
CPE
Customer Premise
Equipment
CSD
Circuit Switched Data
dBi
DCE
Data Communications
Equipment
DCS
Digital Cellular System
DTE
Data Terminal Equipment
EFR
Enhanced Full Rate
EIR
Equipment Identity Register
EIRP
Equivalent Isotropic
Radiated
Power
EMC
Electromagnetic
Compatibility
ESD
Electrostatic Discharge
EU
European Union
FTA
Full Type Approval
GPRS
General Packet Radio
Service
GPS
GSM
Global System for Mobile
Communications
HLR
Home Location Register
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Application Programming Interface.
Refers to the Application which sends or receives commands/responses
from the Enfora Enabler II-G A-GPS Module
Commands issued by intelligent device to a modem to perform functions,
such as to initiate call, to answer call, or to transmit data.
Bit Error Rate
Multiplexer protocol that operates between an MS and a TE and allows a
number of simultaneous sessions over a normal serial asynchronous
interface
A terminal in fixed location on the customer’s premises.
Data link from a terminal through the network allowing real-time, duplex
connectivity at 9600 bytes/second.
Decibels referenced to an isotropic radiator
Data Communications Equipment
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.
Data Terminal Equipment
Voice (vocoder) compression algorithms which offer the highest quality
voice communication.
A database used to store International Mobile Equipment Identity (IMEI) of
a locally issued terminal.
In a given direction, the gain of a transmitting antenna multiplied by the net
power accepted by the antenna from the connected transmitter.
The ability of a device to function satisfactorily in its electromagnetic
environment without inducing intolerable disturbance to that environment
(or to other devices)
Static electricity that can damage electronic equipment.
An organization of 15 European states whose purpose is to organize
relations between the Member States and between their peoples.
GSM Full Type Approval
Standard for packet communications utilizing Global Standard for Mobility
(GSM) infrastructure.
Global Positioning System
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.
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
IMSI
International Mobile
Subscriber Identification
Ki
A unique number for each GSM Terminal tracked by the GSM operators in
their Equipment Identity Register (EIR) database.
MO
Mobile Originated
MT
Mobile Terminated
MSC
Mobile Switching Center
Non-Transparent Mode
Any GSM/GPRS service originated at the mobile terminal.
NRTL
Nationally Recognized Test
Laboratory
OEM
PA
Packet
PCS
PDA
PDU
PPP
SIM
SMS
SMSC
SUPL
UDP
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A unique number identifying the subscriber stored in the SIM card.
Number is used in conjunction with the network for call routing.
A secret code used in authentication and encryption by the terminal.
Any GSM/GPRS service originated from or routed through the network
and sent to the mobile terminal.
The central switch of the GSM network. Performs call routing, collects call
detail records for billing, and supervises system operations.
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.
OSHA-approved Nationally Recognized Testing Laboratory
Original Equipment Manufacturer.
Power Amplifier.
A collection of data transmitted over a digital network in a burst.
Personal Communication Services.
Personal Digital Assistant.
Packet Data Unit.
Point-To-Point Protocol.
Subscriber Identity Module.
Short Message Service.
Short Message Service Center.
User Datagram Protocol.
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16. APPENDIX D – Tables and Figures
TABLES
Table 1 - Enabler II-G Key Features ............................................................................................................. 9
Table 2 - Enabler II-G A-GPS Pin Assignments ......................................................................................... 23
Table 3 - Modem Library Configurations..................................................................................................... 51
FIGURES
Figure 1 UDP API Architecture ................................................................................................................... 10
Figure 2 PAD Architecture .......................................................................................................................... 11
Figure 3 Enabler II-G A-GPS Module Block Diagram................................................................................. 16
Figure 4 Enabler II-G Host Board Layout.................................................................................................... 20
Figure 5 Enabler II-G Package Dimensions (with integrated SIM carrier).................................................. 21
Figure 6 Module Pin Orientations ............................................................................................................... 22
Figure 7 MCB2 Cable Assembly................................................................................................................. 26
Figure 8 Ring Indicate Timing ..................................................................................................................... 27
Figure 9 External Power Control Signal (no external processor)................................................................ 28
Figure10 External Power Control Signal (using external RC circuit) .......................................................... 29
Figure 11 Power Control Signal (using external processor) ....................................................................... 30
Figure 12 Typical Power On Sequence (using external processor) ........................................................... 31
Figure 13 RESET (using external processor) ............................................................................................. 32
Figure 14 Enabler II-G A-GPS Module Serial Interface with Dedicated Serial Port and GPS Port ............ 34
Figure 15 Audio Reference ......................................................................................................................... 37
Figure 16 Remote SIM Interface ................................................................................................................. 39
Figure 17 UDP-API Structure...................................................................................................................... 48
Figure 18 Library Layout ............................................................................................................................. 50
Figure 19 Using Port Library ....................................................................................................................... 51
Figure 20 Using Messaging Library ............................................................................................................ 51
Figure 21 Using Modem Library.................................................................................................................. 53
Figure 22 HyperTerminal Definition ............................................................................................................ 54
Figure 23 COM Port Settings ...................................................................................................................... 55
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17. 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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