EM7455 Hardware Integration Guide 4117682 Rev 3 Proprietary and Confidential Contents subject to change
EM7455 Hardware Integration Guide Important Notice Safety and Hazards Due to the nature of wireless communications, transmission and reception of data can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost.
Preface Patents This product may contain technology developed by or for Sierra Wireless Inc. This product includes technology licensed from QUALCOMM®. This product is manufactured or sold by Sierra Wireless Inc. or its affiliates under one or more patents licensed from InterDigital Group and MMP Portfolio Licensing. Copyright Trademarks ©2021 Sierra Wireless. All rights reserved. Sierra Wireless®, AirPrime®, Skylight™, and the Sierra Wireless logo are registered trademarks of Sierra Wireless.
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Required Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Power Supply . . . . . . . . . . . . .
1 1: Introduction The Sierra Wireless EM7455 Embedded Module is an M.2 module that provides LTE, UMTS, and GNSS connectivity for notebook, ultrabook, tablet computers, and M2M applications over several radio frequency bands. Accessories A hardware development kit is available for AirPrime M.2 modules.
2 2: Power Power Supply The host provides power to the EM7455 through multiple power and ground pins. The host must provide safe and continuous power (via battery or a regulated power supply) at all times; the module does not have an independent power supply, or protection circuits to guard against electrical issues. For detailed pinout and voltage/current requirements of this module, see the AirPrime EM7455 Product Technical Specification.
3 3: RF Specifications The EM7455 operates on the frequency bands listed below.
EM7455 Hardware Integration Guide Table 3-3: GNSS Frequency Band Support Band Frequencies Narrow-band GPS, Galileo Rx: 1575.42 MHz Wide-band GPS + GLONASS Rx: 1560–1606 MHz Narrow-band BeiDou Rx: 1561.098 MHz Narrow-band GLONASS Rx: 1601.
RF Specifications • If both UMTS and CDMA modules will be installed in the same platform, you may want to develop separate antennas for maximum performance. Determining the Antenna’s Location When deciding where to put the antennas: • Antenna location may affect RF performance.
EM7455 Hardware Integration Guide Note: The EM7455 is based on ZIF (Zero Intermediate Frequency) technologies. When performing EMC (Electromagnetic Compatibility) tests, there are no IF (Intermediate Frequency) components from the module to consider. Interference From Other Wireless Devices Wireless devices operating inside the host device can cause interference that affects the module.
RF Specifications • • • Filter out unwanted high-order harmonic energy by using discrete filtering on low frequency lines. Form shielding layers around high-speed clock traces by using multi-layer PCBs. Route antenna cables away from noise sources.
4: Regulatory Compliance and Industry Certifications This module is designed to meet, and upon commercial release, will meet the requirements of the following regulatory bodies and regulations, where applicable: • Federal Communications Commission (FCC) of the United States • The Certification and Engineering Bureau of Industry Canada (IC) • The National Communications Commission (NCC) of Taiwan, Republic of China • Ministry of Internal Affairs and Communications (MIC) of Japan • Radio Equipment and Telecom
Regulatory Compliance and Industry Certifications In an aircraft, the EM7455 module MUST BE POWERED OFF. Otherwise, the EM7455 module can transmit signals that could interfere with various onboard systems and may be dangerous to the operation of the aircraft or disrupt the cellular network. Use of a cellular phone in an aircraft is illegal in some jurisdictions. Failure to observe this instruction may lead to suspension or denial of cellular telephone services to the offender, or legal action or both.
EM7455 Hardware Integration Guide 3. The EM7455 module may transmit simultaneously with other collocated radio transmitters within a host device, provided the following conditions are met: · Each collocated radio transmitter has been certified by FCC/IC for mobile application. · At least 20 cm separation distance between the antennas of the collocated transmitters and the user’s body must be maintained at all times.
5 5: Acronyms Table 5-1: Acronyms and Definitions Acronym or term Definition 3GPP 3rd Generation Partnership Project BeiDou BeiDou Navigation Satellite System A Chinese system that uses a series of satellites in geostationary and middle earth orbits to provide navigational data.
EM7455 Hardware Integration Guide Table 5-1: Acronyms and Definitions (Continued) Acronym or term Definition IC Industry Canada IF Intermediate Frequency IS Interim Standard. After receiving industry consensus, the TIA forwards the standard to ANSI for approval. LTE Long Term Evolution—a high-performance air interface for cellular mobile communication systems. MHz Megahertz = 10e6 Hz OEM Original Equipment Manufacturer—a company that manufactures a product and sells it to a reseller.
