Enfora Enabler LPP G Quick setup guide
Enfora Enabler LPP G
Integration Guide
Version: Preliminary
Integration Guide:
LPP0108IG001
Enfora Enabler LPP G
Integration Guide
LPP0108IG001 Version - Preliminary – 06/20/2008
Document Title: Enfora Enabler LPP G Integration Guide
Version: Preliminary
Date: 06/20/2008
Status: Preliminary
Document Control ID: LPP0108IG001
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, 2006, 2007, 2008 Enfora, Inc. All rights reserved.
Enabler and Spider are either registered trademarks or trademarks of Enfora, Inc. in the United
States.
Enfora Enabler LPP G
Integration Guide
LPP0108IG001 Version - Preliminary – 06/20/2008
Table of Contents
1.SAFETY PRECAUTIONS .................................................................................................................................1
1.1.IMPORTANT SAFETY INFORMATION................................................................................................................1
2.REGULATORY COMPLIANCE FCC.............................................................................................................1
2.1.INTEGRATION CONSIDERATIONS AND INSTALLATION REQUIREMENTS...........................................................1
2.2.DISCLAIMER ...................................................................................................................................................3
3.MANUAL OVERVIEW......................................................................................................................................4
3.1.REVISION HISTORY.........................................................................................................................................4
H3.2.REFERENCES...................................................................................................................................................5
3.2.1.Enfora Enabler LPP G Product Documentation .................................................................................5
3.2.2.GSM Device Specifications..................................................................................................................5
3.2.3.US Government....................................................................................................................................5
3.2.4.Federal Communications Commission (FCC).....................................................................................5
3.2.5.FCC Office of Engineering and Technology (OET).............................................................................5
3.2.6.Industry Canada ..................................................................................................................................6
3.2.7.Environmental Regulations..................................................................................................................6
3.2.8.Mechanical Specifications ...................................................................................................................6
3.2.9.RF and EMI Specifications..................................................................................................................6
4.INTRODUCTION...............................................................................................................................................7
4.1.PRODUCT OVERVIEW......................................................................................................................................7
4.2.KEY FEATURES OF THE ENABLER LPP GMODULE.........................................................................................7
4.3.PROVIDING MULTI-BAND OPERATION ...........................................................................................................9
4.4.SUMMARY OF FEATURES FOR THE ENABLER LPP GMODULE........................................................................9
4.5.GENERAL DESIGN GUIDELINES FOR UTILIZING ENFORA GSM MODULES ......................................................12
4.5.1.Advanced tips for an RF friendly layout............................................................................................13
4.5.1.1.Ground Plane ...................................................................................................................................................13
4.5.1.2.Thermal Relief................................................................................................................................................. 14
4.5.1.3.Antenna and RF Signal Trace ..........................................................................................................................15
4.5.1.4.Vbat Input........................................................................................................................................................ 16
4.5.2.Audio Reference Design.....................................................................................................................17
4.5.2.1.Audio Schematics ............................................................................................................................................17
4.5.2.2.Audio Layout................................................................................................................................................... 17
4.6.HANDLING AND SOLDERING GUIDELINES.....................................................................................................17
5.TECHNICAL SPECIFICATIONS..................................................................................................................18
5.1.ENABLER LPP GMODULE BLOCK DIAGRAM...............................................................................................18
5.2.DETAILED PRODUCT SPECIFICATIONS ..........................................................................................................19
CLIMATIC:STORAGE AND TRANSPORTATION...........................................................................................................19
MECHANICAL:STORAGE AND TRANSPORTATION.....................................................................................................19
MECHANICAL:PROPOSED STANDARDS ....................................................................................................................19
ELECTROMAGNETIC EMISSIONS ...............................................................................................................................19
5.3.OPERATING POWER ......................................................................................................................................20
5.3.1.Typical Input Current ........................................................................................................................20
5.3.2.GSM Transmit Power ........................................................................................................................20
5.3.3.GSM Receiver Sensitivity...................................................................................................................21
6.PHYSICAL INTERFACES..............................................................................................................................21
6.1.MODULE MOUNTING TO HOST BOARD (REFERENCE)...................................................................................22
6.2.I/O PIN ASSIGNMENTS..................................................................................................................................25
6.3.CIRCUIT PROTECTION...................................................................................................................................26
6.4.ANTENNA .....................................................................................................................................................27
Enfora Enabler LPP G
Integration Guide
LPP0108IG001 Version - Preliminary – 06/20/2008
6.4.1.GSM...................................................................................................................................................27
6.4.2.GPS....................................................................................................................................................27
6.5.CONTROL CONNECTOR SIGNAL DESCRIPTIONS AND FUNCTIONS .................................................................29
6.5.1.Module Power (Pins 30, 31)..............................................................................................................29
6.5.2.On/Off Signal (Pin 4).........................................................................................................................30
6.5.3.On/Off Status (Pin 5) .........................................................................................................................30
6.5.1.General Purpose Input Signals (Pins 10, 11) ....................................................................................30
6.5.1.General Purpose Output Signals (Pins 12, 13)..................................................................................30
6.5.2.Reset Signal (Pin 24) .........................................................................................................................30
6.5.3.USB (Pins 34, 35, 36) ........................................................................................................................31
6.5.4.RTC Sleep ............................................................................................Error! Bookmark not defined.
6.5.5.Serial Interfaces.................................................................................................................................32
6.5.5.1.Main Serial Interface (Pins 17, 18) .................................................................................................................. 32
6.5.5.2.GPS Serial Interface (Pin 19)........................................................................................................................... 33
6.5.6.Handset Microphone Input (Pins 39, 40)...........................................................................................34
6.5.7.Handset Speaker Output (Pins 37, 38)...............................................................................................34
6.6.SUBSCRIBER IDENTITY MODULE (SIM) (PINS 42, 43, 44, 45, 46).................................................................35
6.6.1.Using a Remote SIM with the Enfora Enabler LPP G Module (Pins 42, 43, 44, 45, 46) ..................36
6.6.1.1.Remote SIM Component Information..............................................................................................................37
7.BATTERY CHARGING CALIBRATION AND CONFIGURATION........................................................38
7.1.OBJECTIVE....................................................................................................................................................38
7.2.SUPPORTED DEVICES....................................................................................................................................38
7.3.REFERENCES.................................................................................................................................................38
7.4.LIST OF BATTERY CHARGING COMMANDS.....................................................................................................38
7.4.1.Setting BCIVSF parameters...............................................................................................................39
7.4.2.Equipment required ...........................................................................................................................39
7.4.3.Procedure ..........................................................................................................................................39
7.4.4.Setting BCIISF Parameters................................................................................................................40
7.4.5.Scope..................................................................................................................................................40
7.4.6.6.2 Equipment required .....................................................................................................................40
7.4.7.6.3 Calibration procedure .................................................................................................................40
7.5.SETTING BCIAVG PARAMETERS..................................................................................................................42
7.6.SETTING BCIMAP# PARAMETERS................................................................................................................42
7.6.1.Scope..................................................................................................................................................42
7.6.2.Procedure ..........................................................................................................................................42
7.6.3.Choose the BCIMAP# index ..............................................................................................................42
7.6.4.Set the desired CI charge current for the designated charger...........................................................43
7.6.5.Charge empty battery in constant current with target <ci_chgireg>................................................43
7.6.6.Note the first Vbat(mA) that occurred after the charge stopped and went to 3(SUP)........................44
7.6.7.Calculate the BCIMAP# values for the parameters above the index.................................................45
7.6.8.Discharge the battery, determine the remaining BCIPCT# parameters............................................45
7.7.SETTING BCIBAT# PARAMETERS ................................................................................................................47
7.7.1.Procedure to set the battery ID..........................................................................................................47
7.8.SETTING BCITMP# PARAMETERS................................................................................................................47
7.8.1.Scope..................................................................................................................................................47
7.8.2.Equipment required ...........................................................................................................................48
7.8.3.Procedure ..........................................................................................................................................48
7.9.SETTING BCIDEL PARAMETERS...................................................................................................................49
7.10.SETTING BCIOFF PARAMETERS...............................................................................................................49
7.11.BATTERY CHARGING CALIBRATION AND CONFIGURATION -APPENDIX 1................................................50
7.12.BCI COMMAND PARAMETERS -APPENDIX 2............................................................................................52
7.13.SET BCI PARAMETERS FOR AN ACTIVEKEY2-APPENDIX 3 .....................................................................54
8.GPS PERFORMANCE.....................................................................................................................................56
9.GSM/GPRS MODES OF OPERATION.........................................................................................................57
Enfora Enabler LPP G
Integration Guide
LPP0108IG001 Version - Preliminary – 06/20/2008
9.1.ENABLING THE TRANSMISSION MODES FOR THE GSM/GPRS SERVICES .....................................................57
9.2.VOICE COMMUNICATION..............................................................................................................................57
9.3.SMS: SHORT MESSAGE SERVICES................................................................................................................58
9.4.SIM OPERATION...........................................................................................................................................58
9.4.1.Provisioning the SIM .........................................................................................................................58
9.5.GPRS SERVICES SUPPORTED BY THE ENFORA ENABLER LPP GMODULE...................................................58
9.6.SELECTING THE GSM MODES OF OPERATION ..............................................................................................59
10.SOFTWARE INTERFACE..........................................................................................................................60
10.1.SOFTWARE INTERFACE.............................................................................................................................60
10.2.FORMAT FOR THE AT COMMANDS ...........................................................................................................60
10.3.ENFORA AT COMMAND SET.....................................................................................................................60
11.INTEGRATION AND TESTING................................................................................................................61
12.APPENDIX A - LIMITED WARRANTY...................................................................................................62
12.1.SCOPE.......................................................................................................................................................62
12.2.HARDWARE ..............................................................................................................................................62
12.3.SOFTWARE................................................................................................................................................62
12.4.OTHER CONSIDERATIONS .........................................................................................................................63
13.APPENDIX B - REGULATIONS AND COMPLIANCE..........................................................................64
13.1.GCF/PTCRB APPROVAL (FORMERLY FTA)............................................................................................64
13.2.ELECTROMAGNETIC COMPATIBILITY (EMC) AND SAFETY REQUIREMENTS.............................................64
13.3.EMC/SAFETY REQUIREMENTS FOR THE USA ..........................................................................................64
13.4.HUMAN EXPOSURE COMPLIANCE STATEMENT.........................................................................................65
13.5.COMPLIANCE WITH FCC REGULATIONS ...................................................................................................65
13.6.UNINTENTIONAL RADIATORS,PART 15....................................................................................................66
13.7.INTENTIONAL RADIATORS,PART 22 &24 ................................................................................................66
13.8.INSTRUCTIONS TO THE ORIGINAL EQUIPMENT MANUFACTURER (OEM)..................................................67
13.8.1.OEM Responsibilities for All Products Containing the Enabler LPP G module...............................69
13.8.2.Specific OEM Responsibilities for Portable Products and Applications...........................................70
13.8.3.Specific OEM Responsibilities for Mobile Products and Applications..............................................70
13.8.4.Specific OEM Responsibilities for Fixed Products and Applications................................................70
13.9.EMC/SAFETY REQUIREMENTS FOR THE COUNTRIES OF THE EUROPEAN UNION (EU)..............................71
13.10.EMC/SAFETY REQUIREMENTS FOR OTHER COUNTRIES ...........................................................................71
14.APPENDIX C - GLOSSARY AND ACRONYMS......................................................................................72
15.APPENDIX D – TABLES AND FIGURES.................................................................................................74
16.APPENDIX E - CONTACTING ENFORA.................................................................................................75
LPP0108IG001 1Version - Preliminary – 06/20/08
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 LPP G 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 LPP G module is designed for use in a variety of host units, "enabling" the host
platform to perform wireless data communications. However, there are certain criteria relative to
integrating the Enabler LPP G module 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.
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interference that may
cause undesired operation of the device.
In order to use the Enabler LPP G module without additional FCC certification approvals, the
installation must meet the following conditions:
Maximum RF output power and antenna gain to meet Maximum Permissible Exposure
Requirements: GSM850 mode: Power at antenna port is +33 dBm. The maximum gain
is 1.4 dBi. GSM1900 mode: Power at antenna port is 30 dBm. The maximum gain is 7
dBi in order to meet the requirements of maximum 2 watts EIRP for mobile transmitters. If
RF power and/or antenna gain is desired, a separate FCC certification is required.
If used in a "portable" application such as a handheld or body worn 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 and the
device will require its own FCC ID:
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).
LPP0108IG001 2Version - Preliminary – 06/20/08
ERP and EIRP measurements for FCC Parts 22 and 24, alternatively a full retest on
FCC Parts 22 and 24 can be performed.
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 Enabler LPP G module 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 module.
For example, the label should contain wording such as:
Contains GSM/GPRS modem transmitter module
FCC ID: MIVLPP0108
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: MIVLPP0108
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 Enabler LPP G module 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.
LPP0108IG001 3Version - Preliminary – 06/20/08
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, R&TTE, 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 LPP G 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.
LPP0108IG001 4Version - Preliminary – 06/20/08
3. Manual Overview
This document describes the available hardware interface of the Enabler LPP G module. The
purpose of this document is to define the electrical, mechanical and software interfaces while
providing detailed technical information in order to streamline the process of hardware and
system integration.
3.1. Revision History
Date Rev Author Description
06/20/08 1.00 Chuck Todd Preliminary
LPP0108IG001 5Version - Preliminary – 06/20/08
3.2. References
3.2.1.Enfora Enabler LPP G Product Documentation
Manuals
LPP0108AT001 - Enfora Enabler LPP G AT Command Set Reference
GSM0308UG001 - Enfora GSM-GPRS Family API Reference
LPP0108PR001 – Enfora Enabler LPP G Programming Reference
LPP0108SD001 – Enfora Enabler LPP G SDK Reference
LPP0108UG001 – Enfora Enabler LPP G Power Management Developer Tool Guide
3.2.2.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
3.2.3.US Government
3.2.4.Federal Communications Commission (FCC)
Internet: http://www.fcc.gov/
FCC Rules, Part 24
47 CFR Subpart E--Broadband PCS
47 CFR § 24.52, sections 1.1307(b), 2.1091, and 2.1093
FCC Rules, Part 22 for GSM 850
FCC Rules, Part 15
FCC Rules, Part 2
Subpart J--Equipment Authorization Procedures
Section 2.925
3.2.5.FCC Office of Engineering and Technology (OET)
Internet: http://www.fcc.gov.oet/
Bulletin Number 65 "Evaluating Compliance with FCC Guidelines for Human Exposure
to Radio Frequency Electromagnetic Fields"
Supplement C "Additional Information for Evaluating Compliance of Mobile and
Portable Devices with FCC Limits for Exposure to Radio Frequency Emissions"
LPP0108IG001 6Version - Preliminary – 06/20/08
3.2.6. Industry Canada
RSS-132
RSS-133
ICES-003
3.2.7.Environmental Regulations
National Environmental Policy Act (NEPA) of 1969 (Part 1, Subpart 1)
RoHS Compiant
3.2.8.Mechanical Specifications
ASTM D999
ASTM D775
IEC 68-2-27
Bellcore Gr-63-CORE
ETS 300 019-1-1 Class 1.2
ETS 300 019-1-2 Class 2.1
ETS 300 019-1-3 Class 3.1
3.2.9.RF and EMI Specifications
ETSI Standards
EN 61000-4-6
EN 61000-4-3
3GPP TS 51.010-1, Section 12.2
LPP0108IG001 7Version - Preliminary – 06/20/08
4. Introduction
4.1. Product Overview
The Enfora Enabler LPP G module is a compact, wireless OEM module that utilizes the Global
System for Mobile Communications (GSM) and General Packet Radio Services (GPRS)
international communications standard to provide two-way wireless capabilities via GSM services.
This GSM/GPRS module is combined with a Global Positioning System (GPS) chipset to provide
physical location, a host processor to ensure very low power standby configurations, and
vibration sensor to detect movement of the module. The Enfora Enabler LPP G module is a fully
Type-approved GSM/GPRS device, enabling application-specific, two-way communication and
control.
The small size of the Enfora Enabler LPP G module allows it to be integrated easily into the
application and packaging.
4.2. Key Features of the Enabler LPP G Module
The following table summarizes the main features of the Enfora Enabler LPP G Radio Module.
Interface Data input/output interface 50 position 1.27mm pitch
Primary serial port 3.3V levels, ‘2-wire’ UART implementation
Secondary serial Port Single TX from GPS, NMEA data only.
USB port USB Debug and Configuration
Audio Digital audio
Command protocol Enfora Packet API, GSM AT command set, Enfora
MCP
Subscriber Identification Module
(SIM)
USIM port with SIM detect, Optional embedded
SIM.
Battery Charger Lithium Ion battery charger, temperature and
battery ID analog inputs
Power Electrical power 3.3 to 4.5 Vdc (vbat)
Peak currents and average
power dissipation
Refer to the Operating Power table in the
Technical Specifications for peak currents and
average power dissipation for various modes of
operation.
Radio Features Frequency bands EGSM 900, GSM1800, GSM 850 and GSM 1900
capability.
GSM/GPRS features supported Provides for all GSM/GPRS authentication,
encryption, and frequency hopping algorithms.
GPRS Coding Schemes CS1-CS4 supported.
Multi-Slot Class 10 (4RX/2TX, Max 5 Slots).
Regulatory Agency approvals
GCF Type Approval
PTCRB Type Approval
FCC Certification
RTTE
CE (European Community Certification)
IC (Industry Canada) Approval
GSM/GPRS
Functionality
Mobile-originated and mobile-terminated SMS messages: up to 140 bytes or
up to 160 GSM 7-bit ASCII characters.
Reception of Cell Broadcast Message
SMS Receipt acknowledgement
Voice (EFR, FR, HR, AMR)
Supports Unstructured Supplementary Service Data (USSD)
Multi-Slot Class 10 Supported (4Rx/2TX), (5 Slot Max) PBCCH/PCCCH
Supported
LPP0108IG001 8Version - Preliminary – 06/20/08
Audio Features Handset Microphone biasing, internal
Handset microphone input (MICIN, MICIP pins)
Outputs Handset earphone outputs (EARP, EARN pins)
SIM 1.8/3 V Mini-Subscriber Identity Module (SIM) compatible
Software Free RTOS included
Table 1 - Enabler LPP G Key Features
LPP0108IG001 9Version - Preliminary – 06/20/08
4.3. Providing Multi-Band Operation
The Enfora Enabler LPP G module provides 4 frequency bands for compatibility with worldwide
frequency standards. 850/1900 frequency bands are primarily used in North and South America,
while 900/1800 bands are used throughout the world. The Enabler LPP G offers all four bands for
use worldwide.
4.4. Summary of Features for the Enabler LPP G Module
The following summarizes the main features of the Enfora Enabler LPP G Module.
Mechanical
Dimensions................................... 38.5 mm x 33.6 mm x 4.19 mm
Weight .......................................... 8.6g
Packet Data Transfer:
Protocol……………………………………………GPRS Release 97
Coding Schemes…………………………………CS1-CS4
Multi-Slot Capability: (Demonstrated @MS10)…….MS10 (4RX/2TX) (Max 5 Slots)
Packet Channel Support .............. ……………..PBCCH/PCCCH
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
GSM/GPRS Radio Performance Multi-Band:
LPP0108 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 ......... PowerClass 1 (1 W)
System Requirements:
Host Interface............................... Serial Interface
DC Voltage ................................... 3.3 to 4.5 Vdc
LPP0108IG001 10 Version - Preliminary – 06/20/08
Application Interface:
Host Protocol ................................ MCP Protocol, AT Commands, OTA Enfora Packet API and
USB.
Internal Protocols ......................... UDP stack and TCP/IP stack
Physical Interface......................... 2 serial (primary - Default rate 115,200 baud; secondary -
rate 19,200 baud), 1 USB (debug)
Audio Interface.............................. Handset microphone input (MICIN, MICIP pins), Handset
earphone outputs (EARP, EARN pins).
SIM Interface:
Remote SIM…………………………1.8/3-Volt SIM Capability
Environmental:
Compliant Operating Temp. ......... -20 °C to 60 °C (Fully GSM Spec Compliant)
Operating Temperature ………….-30 °C to 70 °C (Not fully GSM Spec Compliant)
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
LPP0108IG001 11 Version - Preliminary – 06/20/08
Operating Power (TYPICAL):
NOTE: UART disabled during testing; data average taken for 5 minutes; Vbat = 3.7V.
Function
Block State Min
Current
A
verage
Current Peak
Current
MSP
Idle
2.2V TBD <2uA 22uA
3.3V TBD <2.5uA 25uA
Motion sensor on
(no movement)
2.2V TBD <7uA 40uA
3.3V TBD 3.5uA 21.5uA
Motion sensor
with movement
2.2V TBD 14uA 2250uA
3.3V TBD 25.5uA 3750uA
GSM only Power on to
modem register
TBD TBD TBD
Idle
TBD TBD TBD
GPS only GPS enable to
first 3D fix -
130dbm (~45sec)
TBD 56.6mA 247.5mA
Acquisition
TBD 76mA 80mA
Tracking
(@ -155dbm)
TBD 72mA 78mA
GSM &
GPS Shutdown
TBD TBD TBD
Acquisition
TBD TBD TBD
Tracking
TBD TBD TBD
Table 2: Typical Operating Power
LPP0108IG001 12 Version - Preliminary – 06/20/08
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)
4.5. General design guidelines for utilizing Enfora GSM modules
The following guidelines are provided in an effort to allow Enabler LPP G module users to
successfully implement their PCB layout to obtain the best performance. This includes the lowest
possible EMI emissions, maximum thermal conduction, mechanical integrity, and voice quality. The
Enabler LPP G module is a very compact, high performance design, yet it is easy to interface into the
final product. In order to realize its full potential, designers should pay close attention to ground
structures, the routing of RF and Digital traces, and the size of the power supply lines.
These design tips are strictly guidelines and are not
meant to be a complete list of items that guarantee
actual performance. Each application is different and
may require variation from these guidelines; however,
care should be given to utilize these sound engineering
principles whenever possible.
LPP0108IG001 13 Version - Preliminary – 06/20/08
4.5.1.Advanced tips for an RF friendly layout
4.5.1.1. Ground Plane
To ensure the lowest possible EMI emissions and maximum thermal conductivity, it is
recommended that all metal tabs on the GSM module shield must be soldered down onto a
continuous ground plane that runs under the entire module. Ample ground vias should be
provided to create a low impedance ground. It is recommended to minimize the number of
I/O and power traces under the GSM module to allow for as much ground plane as possible.
An example of a good ground structure and pad layout is shown below in Figure 1 - Example
of good ground plane for GSM modules.
Figure 1 - Example of good ground plane for GSM modules
LPP0108IG001 14 Version - Preliminary – 06/20/08
4.5.1.2. Thermal Relief
Because the ground plane acts as a large heat sink, it can affect the solderability of
components. A common method to reduce this effect is to use thermal relief around the pad
in question. However, great care must be taken when using thermal relief for high current or
high frequency applications
For example, a large thermal relief like the one shown in Figure 2 can serve the purpose for
general applications such as low current, low speed data lines, DC connections and audio
frequency applications. However, such thermal relief structures should be avoided for
applications where high current and/or high frequency is involved, such as those using the
Enabler Module. Depending on the frequency of operation, the long narrow thermal relief
traces between the pad and the ground plane act like an RF choke. These RF chokes
become higher impedance at harmonics of the fundamental frequency making it problematic
for high frequency suppression. This can make it difficult to pass type approval testing.
Figure 2 - Example of a POOR RF Thermal Relief
If thermal relief is necessary, it is recommended that you use short, fat traces similar to those
shown in Figure 3. This will still provide a solderable connection, while providing a better RF
connection. Making them shorter also allows for a more continuous ground plane due to less
copper being removed from the area. It is also recommended to have ground vias around all
thermal relief of critical ground pins.
POOR RF thermal relief
LPP0108IG001 15 Version - Preliminary – 06/20/08
Figure 3 - Example of a GOOD RF Thermal Relief
4.5.1.3. Antenna and RF Signal Trace
The PCB trace that feeds the RF output port must be designed for a 50 ohm characteristic
impedance, coplanar, or routed into internal layers to keep the top layer continuous around
and underneath the Enabler module. Ample ground vias should be provided around the RF
contacts, the RF trace and launch pad. If possible, keep I/O and power traces away from the
RF port. This includes traces running parallel or orthogonal to it. Thermal relief should not
be used on the antenna output port ground pads. The designer must pay close attention to
the size of the pad and thickness of the dielectric beneath the signal pad and trace. Most
PCB manufacturers can adjust the trace width to maintain 50 ohms impedance if the traces
are identified and instructions are included on the FAB drawing. This service is typically
provided at no or minimal additional cost.
For minimum RF emissions due to the fundamental frequency of operation, the Enabler
module works best with an antenna load that has a VSWR of 1.5:1 or better. The antenna
should not have gain at the harmonic frequencies, otherwise, the conducted harmonics could
get amplified to a point where the product no longer passes type approval. However, for
applications where antenna quality is less than ideal, it is recommended to have a low pass
filter (Pi structure with N=3) in the RF path to the antenna. This is a secondary plan should
there be a need to lower harmonic levels at frequencies above the PCS band. The pad
structure may also be used to match the antenna load impedance, if required. If it is not
needed, a capacitor of low reactance may be used to bridge the Pi structure.
The RF cable going between the Enable module and the antenna is very lossy, therefore, the
length of this cable should be kept as short as possible.
GOOD RF thermal relief
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