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Summary of Contents for Sierra Wireless AirPrime EM7655
- Page 1 AirPrime EM7655 Hardware Integration Guide 4112881 Rev 1 Distribution under NDA only Contents subject to change...
- Page 3 Notice totally lost. Although significant delays or losses of data are rare when wireless devices such as the Sierra Wireless modem are used in a normal manner with a well-constructed network, the Sierra Wireless modem should not be used in...
- Page 4 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. Copyright ©2012 Sierra Wireless.
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Page 5: Table Of Contents
Contents Introduction ........... . .7 Accessories . - Page 6 Hardware Integration Guide Proprietary and Confidential - Contents subject to change 4112881...
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Page 7: Introduction
1: Introduction The Sierra Wireless EM7655 Embedded Module is a Thin Form Factor (TFF) modem that provides LTE, DC-HSPA+, HSPA+, HSDPA, HSUPA, WCDMA, GSM, GPRS, EDGE and CDMA connectivity for tablet, slate, and ultra-portable devices over several radio frequency bands. The device also supports 2G / 3G roaming. - Page 8 Hardware Integration Guide Proprietary and Confidential - Contents subject to change 4112881...
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Page 9: Power
For detailed pinout and voltage / current requirements of this module, see the AirPrime EM7655 Product Technical Specification & Customer Design Guidelines. Module power states The module has five power states, as described in Table 2-1. - Page 10 Hardware Integration Guide Table 2-1: Module power states (Continued) State Details • Sleep Normal state of module between calls or data connections • Module cycles between wake (polling the network) and sleep, at network provider- determined interval. •...
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Page 11: Rf Specifications
3: RF Specifications The EM7655 operates on the frequency bands listed below. Table 3-1: LTE frequency band support Band Frequencies Tx: 1850–1910 MHz Band 2 Rx: 1930–1990 MHz Tx: 1710–1755 MHz Band 4 (AWS) Rx: 2110–2155 MHz Tx: 824–849 MHz Band 5 Rx: 869–894 MHz Band 13... -
Page 12: Rf Connections
Hardware Integration Guide Table 3-3: GSM frequency band support (Continued) Band Frequencies GSM 1800 Tx: 1710–1785 MHz Rx: 1805–1880 MHz GSM 1900 Tx: 1850–1910 MHz Rx: 1930–1990 MHz Table 3-4: CDMA frequency band support Band Frequencies Band Class 0 Tx: 824–849 MHz (Cellular 800 MHz) Rx: 869–894 MHz Band Class 1... - Page 13 RF Specifications Choosing the correct antenna and cabling When matching antennas and cabling: • The antenna (and associated circuitry) should have a nominal impedance of 50 with a return loss of better than 10 dB across each frequency band of operation.
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Page 14: Ground Connection
Hardware Integration Guide Ground connection When connecting the module to system ground: • Prevent noise leakage by establishing a very good ground connection to the module through the host connector. • Connect to system ground using the module’s mounting holes. •... -
Page 15: Device-Generated Rf Interference
RF Specifications Proximity of host electronics to the antenna in wireless devices can contribute to decreased Rx performance. Components that are most likely to cause this include: • Microprocessor and memory • Display panel and display drivers • Switching-mode power supplies Device-generated RF interference The module can cause interference with other devices. -
Page 16: Radiated Sensitivity Measurement
To determine the extent of any receiver performance desensitization due to self- generated noise in the host device, over-the-air (OTA) or radiated testing is required. This testing can be performed by Sierra Wireless or you can use your own OTA test chamber for in-house testing. -
Page 17: Regulatory Compliance And Industry Certifications
(i.e., have errors) or be totally lost. Although significant delays or losses of data are rare when wireless devices such as the Sierra Wireless modem are used in a normal manner with a well- constructed network, the Sierra Wireless modem should not be used... -
Page 18: Important Compliance Information For North American Users
Hardware Integration Guide • 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 EM7655 modem MUST BE POWERED OFF. - Page 19 Regulatory Compliance and Industry Certifications · The output power and antenna gain must not exceed the limits and configu- rations stipulated in the following table. Device Technology Band Frequency Maximum Maximum (MHz) conducted power antenna gain (dBm) (dBi) EM7655 1850–1910 Embedded 1710–1755 Module...
- Page 20 Hardware Integration Guide The end product with an embedded EM7655 modem may also need to pass the FCC Part 15 unintentional emission testing requirements and be properly authorized per FCC Part 15. Note: If this module is intended for use in a portable device, you are responsible for separate approval to satisfy the SAR requirements of FCC Part 2.1093 and IC RSS-102.
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Page 21: Acronyms
5: Acronyms Table 5-1: Acronyms and definitions Acronym or term Definition 1xEV-DO Single Carrier (1X) EVolution – Data Only. A high-speed standard for cellular packet data communications. Supports Internet connections with data rates up to 3.1 Mbps (downlink from the network) and 1.8 Mbps (uplink to the network). - Page 22 Hardware Integration Guide Table 5-1: Acronyms and definitions (Continued) Acronym or term Definition A logarithmic (base 10) measure of relative power (dB for decibels); relative to milliwatts (m). A dBm value will be 30 units (1000 times) larger (less negative) than a dBW value, because of the difference in scale (milliwatts vs.
- Page 23 Acronyms Table 5-1: Acronyms and definitions (Continued) Acronym or term Definition GPRS General Packet Radio Service Global System for Mobile Communications Host The device into which an embedded module is integrated HSDPA High Speed Downlink Packet Access HSPA+ Enhanced HSPA, as defined in 3GPP Release 7 and beyond HSUPA High Speed Uplink Packet Access Hertz = 1 cycle / second...
- Page 24 Hardware Integration Guide Table 5-1: Acronyms and definitions (Continued) Acronym or term Definition MIMO Multiple Input Multiple Output—wireless antenna technology that uses multiple antennas at both transmitter and receiver side. This improves performance. NAS / AS Network Access Server No Connect Network Interface Card NMEA National Marine Electronics Association...
- Page 25 Acronyms Table 5-1: Acronyms and definitions (Continued) Acronym or term Definition roaming A cellular subscriber is in an area where service is obtained from a cellular service provider that is not the subscriber’s provider. Radiated Spurious Emissions RSSI Received Signal Strength Indication Software Development Kit Smart Error Detection Sensitivity...
- Page 26 Hardware Integration Guide Table 5-1: Acronyms and definitions (Continued) Acronym or term Definition Universal Development Kit (for PCI Express Mini Cards) User Equipment UICC Universal Integrated Circuit Card (Also referred to as a SIM card.) Uplink (mobile to network) UMTS Universal Mobile Telecommunications System Universal Serial Bus USIM...
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Page 27: Index
Index frequency band support CDMA, 12 GSM, 11 accessories, 7 LTE, 11 acronyms and definitions, 21– 26 WCDMA, 11 antenna connection considerations, 12 custom, design, 13 diversity antenna, disabling, 13 limit, matching coaxial connections, 12 gain location, considerations, 13 maximum, 18 matching, considerations, 13 grounding... - Page 28 Hardware Integration Guide antenna cable loss, maximum, 12 antenna connection, considerations, 12 sensitivity connectors, required, 7 radiated measurement, overview, 16 desense shielding device-generated, 14 module, compliance, 12 harmonic energy, filtering, 15 reducing RF desense, 15 mitigation suggestions, 15 shielding suggestions, 15 connector, required, 7 interference...
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