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EM3420P
User Manual
21 pgs150.27 Kb0

Sierra Wireless EM3420P User Manual

EM DEVELOPMENT PLATFORM
USERS GUIDE
Version 0.6
SIERRA WIRELESS CONFIDENTIAL AND PROPRIETARY
Document History
Version Date Authors Comments
0.1 5-21-2002 Mike Lease Initial version based on Dev Kit users guide version 2.0
0.2 6-13-2002 Mike Lease Included switch settings input from engineering.
0.3 6-19-2002 Mike Lease First Draft
0.4 5/1/03 Matt Dukleth Minor updates and fix typos, etc.
0.5 7/25/03 Geoff Schulteis Added regulatory information and antenna requirements. Renamed product.
0.6 8/11/03 Geoff Schulteis Changed all Sierra Wireless references to Sierra Wireless. Updated base band section.
© 2003 Sierra Wireless America
Sierra Wireless America, reserves the right to make changes in its products
without notice in order to improve design or performance characteristics.
This publication neither states nor implies any warranty of any kind, including but not limited to implied warrants of merchantability or fitness for a particular application.
The information in this publication is believed to be accurate in all respects at the time of publication, but is subject to change without notice. Sierra Wireless America, assumes no responsibility for any error or omissions, and disclaims responsibility for any consequences resulting from the use of the information included herein.
Copyright © 2003 Sierra Wireless America all rights reserve
CONFIDENTIAL AND PROPRIETARY PAGE II
Table of Contents
1 INTRODUCTION................................................................................................................. 5
1.1 OVERVIEW....................................................................................................................... 5
1.2 DEVELOPMENT KIT CONTENTS........................................................................................ 5
1.3 REGULATORY INFORMATION ........................................................................................... 5
1.3.1 Statement................................................................................................................. 5
1.3.2 Requirements........................................................................................................... 6
1.3.3 Safety....................................................................................................................... 6
2 FCC MODULE ACCEPTANCE CRITERIA.................................................................... 7
2.1 FCC CLASSIFICATION OF MOBILE VS. PORTABLE DEVICES............................................. 7
2.1.1 Mobile vs. Portable Devices ................................................................................... 7
2.2 RF EXPOSURE REQUIREMENTS FOR MOBILE APPROVAL................................................. 7
2.2.1 Product Labeling Requirements ............................................................................. 8
3 SETUP & INSTALLATION................................................................................................ 9
4 DEVELOPMENT PLATFORM HARDWARE.............................................................. 10
4.1 MODES OF OPERATION................................................................................................... 10
4.1.1 Standalone Mode .................................................................................................. 10
4.1.2 Extender Mode...................................................................................................... 10
4.1.3 LED indicators...................................................................................................... 11
4.2 POWERING THE DEVELOPMENT PLATFORM ................................................................... 11
4.2.1 AC Wall Cube Power............................................................................................ 11
4.2.2 DC Power.............................................................................................................. 12
4.3 AUDIO TESTING............................................................................................................. 12
4.3.1 Using a Headset.................................................................................................... 12
4.3.2 Using a Headset.................................................................................................... 12
4.4 EXTERNAL INTERFACES................................................................................................. 12
4.4.1 UART1 - DB9........................................................................................................ 12
4.4.2 UART2 - DB9........................................................................................................ 13
4.4.3 DC Jack................................................................................................................. 13
4.4.4 Headset Jack......................................................................................................... 13
4.5 DEBUG HEADERS........................................................................................................... 14
4.5.1 CN2 - Audio Test Points ....................................................................................... 14
4.5.2 CN12 - Control/Status Signal Test Points ............................................................ 15
4.6 DIP SWITCH SETTINGS .................................................................................................. 15
4.6.1....................................................................................................................................... 15
5 RF INTEGRATION ........................................................................................................... 18
5.1 INTRODUCTION .............................................................................................................. 18
5.2 RF CONNECTION ........................................................................................................... 18
5.3 GROUND PLANE ISOLATION........................................................................................... 18
5.4 ANTENNA AND CABLING................................................................................................19
CONFIDENTIAL AND PROPRIETARY PAGE 3
5.4.1 Matching Antenna and Cable ............................................................................... 19
5.4.2 Antenna Options.................................................................................................... 19
5.4.3 Cables ................................................................................................................... 19
5.5 INTERFERENCE AND SENSITIVITY................................................................................... 19
5.5.1 Power Supply Noise.............................................................................................. 19
5.5.2 Device Generated RF............................................................................................ 20
5.5.3 Hearing Aid Considerations................................................................................. 21
CONFIDENTIAL AND PROPRIETARY PAGE 4
1 INTRODUCTION
1.1 Overview
The scope of this document is to explain the features and capabilities of the EM Development Platform. The development kit is based on a Development Platform, which is designed to support multiple members of the Embedded Module (EM) product family.
This document also covers the Evaluation Application program. It contains step-by-step instructions on how to install and utilize the Evaluation Application User Interface to communicate with the EM Module.
The purpose of the EM Development Platform is to assist the OEM during multiple stages of the product’s development:
§ Initial Module Evaluation
§ Host Software Development
§ Preliminary Hardware Integration
1.2 Development Kit Contents
The Development Platform package includes a number of components:
• Sierra Wireless Development Platform
• Sierra Wireless Software CD (for Windows 2000)
• Wall outlet power “brick”
• 2 DB9 serial cables
1.3 Regulatory Information
1.3.1 Statement
The following safety precautions must be observed during all phases of the operation, usage, service or repair of any cellular terminal or mobile incorporating the EM3420 wireless modem module. Manufacturers of the cellular terminal devices are advised to convey the following safety information to users and operating personnel and to incorporate these guidelines into all safety standards of design, manufacture and intended use of the product. Sierra Wireless assumes no liability for customer failure to comply with these precautions.
1. The EM3420 wireless modem module must be operated at the voltages described in this technical documentation.
2. The EM3420 wireless modem module must not be mechanically or electrically changed. Usage of the connectors should follow the guidance of this technical documentation.
CONFIDENTIAL AND PROPRIETARY PAGE 5
3. The EM3420 wireless modem module has been designed to meet the EMC requirements of 47 CFR Part 2 and Part 15.
4. When integrating the EM 3420 wireless modem module into a system, Sierra Wireless
America recommends testing the system to OET Bulletin 65 Supplement C edition 97-
01.
1.3.2 Requirements
The Federal Communications Commission (FCC) requires application for certification of digital devices in accordance with CFR Title 47, Part 2 and Part 15. This includes electromagnetic susceptibility testing. As the EM3420 wireless modem module is not a stand-alone transceiver but is an integrated module, the EM3420 wireless modem module cannot be tested by itself for EMC/EMI certification.
This device complies with Part 15 of the FCC rules. Operation of the EM3420 wireless modem module 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.
Your mobile device is a low power radio transmitter and receiver. While ON, it receives and sends out radio frequency (RF) signals. The design of this module complies with the FCC guidelines and applicable standards.
WARNING: Unauthorized antennas, modifications, or attachments could impair call
quality, damage the EM3420 wireless modem module, or result in violation of FCC regulations. Do not use the EM3420 wireless modem module with a damaged antenna. Please contact your local authorized dealer for antenna replacement.
1.3.3 Safety
User Operation Requirements
The antennas used for this transmitter must be installed to provide a separation distance of
at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antennas or transmitters. A person or object within 8 inches (20 centimeters) of the antenna could impair call quality and may cause the phone to operate at a higher power level than necessary and expose that person to RF energy in excess of that established by the FCC RF Exposure Guidelines.
!IMPORTANT!: The EM3420 wireless modem module must be installed in a manner that provides a minimum separation distance of 20 cm or more between the antenna and persons to satisfy FCC RF exposure requirements for mobile transmitting devices.
!IMPORTANT!: To comply with the FCC RF exposure limits and satisfy the categorical exclusion requirements for mobile transmitters, the following requirements must be met:
1. A minimum separation distance of 20 cm must be maintained between the antenna and all persons.
2. The transmitter effective radiated power must be less than 1.5 Watts ERP, 2.0 Watts or
33.0 dBm EIRP. This requires that the combination of antenna gain and feed line loss does not exceed 6.0 dBi. (Conducted max power + cable loss + Antenna gain)
CONFIDENTIAL AND PROPRIETARY PAGE 6
2 FCC MODULE ACCEPTANCE CRITERIA
2.1 FCC Classification of Mobile vs. Portable Devices
For operation in the United States, your module integration is required to meet certain regulatory requirements for stand-alone operation, including 47 CFR Parts 2, 15, 22, and
24. Part 15 testing must be performed on the “complete device” which has incorporated the
EM3420 wireless modem module and is therefore your responsibility.
2.1.1 Mobile vs. Portable Devices
The Office of Engineering and Technology has published a document entitled “Evaluating Compliance with FCC Guidelines for Human Exposure to Radiofrequency Electromagnetic Fields”, OET Bulletin 65. This provides a detailed description of the difference between mobile and portable devices.
The FCC Guidelines differentiate between these devices according to the antenna’s proximity to people, either the user or others nearby.
Mobile: The FCC defines a mobile device as being designed for use “ in other than fixed locations and to generally be used in such a way that a separation distance of at least 20 centimeters is maintained between radiating structures and the body of the user or nearby persons”.
Mobile devices including vehicle-mounted systems are designed to be used by people that are typically well separated from the antenna. This also includes wireless devices associated with a personal computer, provided the antenna is kept 20 centimeters away from the body.
These devices are normally evaluated for exposure potential with relation to Maximum Permissible Exposure (MPE) limits. The FCC rules for evaluating mobile devices for RF compliance are found in 47 CFR Part 2.1091 (b).
Portable: A portable device has a transmitter “designed to be used with any part of its radiating structure in direct contact with the user’s body or within 20 centimeters of the user or bystander under normal operating conditions”.
This category includes hand held cellular telephones with antennas built into the device. Portable devices are evaluated with respect to Specific Absorption Rate (SAR) rules.
These can be found in 47 CFR Part 2.1093 (b).
2.2 RF Exposure Requirements for Mobile Approval
The EM3420 wireless modem module has been approved for mobile operations only in accordance to 47 CFR Part 2.1091 (b).
CONFIDENTIAL AND PROPRIETARY PAGE 7
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