AirPrime MC7455 Hardware Integration Guide 4118013 Rev 1 Proprietary and Confidential Contents subject to change
Preface Important Notice 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.
Hardware Integration Guide 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 ©2015 Sierra Wireless. All rights reserved.
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Required Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Power Supply . . . . . . . . . . . . .
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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.
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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.
Hardware Integration Guide 10 Normal state of module between calls or data connections • Host power source is disconnected from the module and all voltages associated with the module are at 0 V. RF enabled Disconnected • • USB interface active Sleep Details Module is powered State Host is powered Table 2-1: Module power states (Continued) Module cycles between wake (polling the network) and sleep, at network providerdetermined interval.
3 3: RF Specifications The MC7455 operates on the frequency bands listed below.
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: 1601.72 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.
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.
Hardware Integration Guide RF desense can be addressed through a combination of mitigation techniques (Methods to Mitigate Decreased Rx Performance on page 15) and radiated sensitivity measurement (Radiated Sensitivity Measurement on page 15). Note: The MC7455 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.
RF Specifications Methods to Mitigate Decreased Rx Performance It is important to investigate sources of localized interference early in the design cycle. To reduce the effect of device-generated RF on Rx performance: • Put the antenna as far as possible from sources of interference. The drawback is that the module may be less convenient to use. • Shield the host device. The module itself is well shielded to avoid external interference. However, the antenna cannot be shielded for obvious reasons.
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4 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
Hardware Integration Guide Safety and Hazards Do not operate your MC7455 module: • In areas where blasting is in progress • Where explosive atmospheres may be present including refuelling points, fuel depots, and chemical plants • Near medical equipment, life support equipment, or any equipment which may be susceptible to any form of radio interference. In such areas, the MC7455 module MUST BE POWERED OFF. Otherwise, the MC7455 module can transmit signals that could interfere with this equipment.
Regulatory Compliance and Industry Certifications Table 4-1: Antenna Gain Specifications Device Technology MC7455 Mini Card LTE UMTS Band Frequency (MHz) Maximum antenna gain (dBi) 2 1850–1910 6 4 1710–1755 6 5 824–849 6 7 2500–2570 9 12 699–716 6 13 777–787 6 25 1850–1915 6 26 814–849 6 30 2305–2315 1 41 2496–2690 9 2 1850–1910 6 4 1710–1755 6 5 824–849 6 3.
Hardware Integration Guide 4. A label must be affixed to the outside of the end product into which the MC7455 module is incorporated, with a statement similar to the following: · This device contains FCC ID: N7NMC7455 Contains transmitter module IC: 2417C-MC7455 where 2417C-MC7455 is the module’s certification number. 5. A user manual with the end product must clearly indicate the operating requirements and conditions that must be observed to ensure compliance with current FCC / IC RF exposure guidelines.
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.
Hardware Integration Guide Table 5-1: Acronyms and Definitions (Continued) Acronym or term 22 Definition Hz Hertz = 1 cycle / second 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.
Index A G accessories, 7 acronyms and definitions, 21– 22 antenna connection considerations, 12 custom, design, 12 diversity antenna, disabling, 13 limit, matching coaxial connections, 12 location, considerations, 13 matching, considerations, 12 maximum cable loss, 12 routing, 13 approvals, regulatory and industry, 17 gain maximum, 18 grounding connection considerations, 13 I B impedance module–antenna, 13 industry approvals, 17 interference device generated, 14 host-generated, 14 wireless devices, 14
Hardware Integration Guide RF antenna cable loss, maximum, 12 antenna connection, considerations, 12 connectors, required, 7 desense device-generated, 14 harmonic energy, filtering, 15 mitigation suggestions, 15 shielding suggestions, 15 interference other devices, 14 wireless devices, 14 RF bands supported LTE, 11 RF specifications, 11–?? RSE, 15 24 S sensitivity radiated measurement, overview, 15 shielding module, compliance, 12 reducing RF desense, 15 SIM connector, required, 7 specifications RF, 11–?
