MC7455 Hardware Integration Guide 4118013 Rev 2 Proprietary and Confidential Contents subject to change
MC7455 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®, Skylight™, and the Sierra Wireless logo are registered trademarks of Sierra Wireless.
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Required Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 1: Introduction The Sierra Wireless MC7455 PCI Express Mini Card is a compact, lightweight, wireless LTE- and UMTS-based modem that provides LTE, UMTS, and GNSS connectivity for M2M applications, notebook, ultrabook and tablet computers over several radio frequency bands. Accessories A hardware development kit is available for AirPrime MC-series modules.
2 2: Power Power Supply The host provides power to the MC7455 through multiple power and ground pins. The host must provide safe and continuous power 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 MC7455 Product Technical Specification. Module Power States The module has five power states, as described in Table 2-1.
3 3: RF Specifications The MC7455 operates on the frequency bands listed below.
MC7455 Hardware Integration Guide Table 3-3: GNSS Frequency Band Support Band Frequency (Rx) Narrow-band GPS, Galileo 1575.42 MHz Wide-band GPS + GLONASS 1560–1606 MHz Narrow-band BeiDou 1561.098 MHz Narrow-band GLONASS 1601.72 MHz RF Connections When attaching antennas to the module: • Use Hirose U.FL connectors (3 mm x 3 mm, low profile; model U.FL #CL331-0471-0-10) to attach antennas to connection points on the module. • Match coaxial connections between the module and the antenna to 50 .
RF Specifications Determining the Antenna’s Location When deciding where to put the antennas: • Antenna location may affect RF performance. Although the module is shielded to prevent interference in most applications, the placement of the antenna is still very important—if the host device is insufficiently shielded, high levels of broadband or spurious noise can degrade the module’s performance. • Connecting cables between the module and the antenna must have 50 impedance.
MC7455 Hardware Integration Guide Interference From Other Wireless Devices Wireless devices operating inside the host device can cause interference that affects the module.
RF Specifications Radiated Spurious Emissions (RSE) When designing an antenna for use with AirPrime embedded modules, the host device with an AirPrime embedded module must satisfy any applicable standards/local regulatory bodies for radiated spurious emission (RSE) for receive-only mode and for transmit mode (transmitter is operating). Note that antenna impedance affects radiated emissions, which must be compared against the conducted 50-ohm emissions baseline.
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 MC7455 module MUST BE POWERED OFF. Otherwise, the MC7455 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.
MC7455 Hardware Integration Guide 3. The MC7455 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.
MC7455 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.
