Sierra Wireless AirPrime EM8805, Hardware Integration Manual

Page 1: ...AirPrime EM8805 Hardware Integration Guide 4112940 Rev 1 Distribution under NDA only Contents subject to change ...

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Page 3: ...s on the ground or in flight In aircraft the Sierra Wireless wireless module MUST BE POWERED OFF When operating the Sierra Wireless wireless module can transmit signals that could interfere with various onboard systems Note Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door is open Sierra Wireless wireless modules may be used at this time The drive...

Page 4: ...eless Windows is a registered trademark of Microsoft Corporation QUALCOMM is a registered trademark of QUALCOMM Incorporated Used under license Other trademarks are the property of their respective owners Contact Information Consult our website for up to date product descriptions documentation application notes firmware upgrades troubleshooting tips and press releases www sierrawireless com Revisi...

Page 5: ...d connection 13 Interference and sensitivity 13 Interference from other wireless devices 14 Host generated RF interference 14 Device generated RF interference 14 Methods to mitigate decreased Rx performance 14 Radiated Spurious Emissions RSE 15 Radiated sensitivity measurement 15 Regulatory Compliance and Industry Certifications 17 Important notice 17 Safety and hazards 17 Important compliance inf...

Page 6: ...Hardware Integration Guide 6 Proprietary and Confidential Contents subject to change 4112940 ...

Page 7: ...dules The kit contains hardware components for evaluating and developing with the module including Development board Cables Antennas Other accessories Required connectors Table 1 1 describes the connectors used to integrate the EM8805 Embedded Module into your host device Table 1 1 Required host module connectors Connector type Description RF cables Mate with M 2 spec connectors Two connector jack...

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Page 9: ...Module power states State Details Host is powered Module is powered USB interface active RF enabled Normal Default state Module is active Default state Occurs when VCC is first applied Full_Card_Power_Off is deasserted pulled high and W_DISABLE 1 is deasserted Module is capable of placing receiving calls or establishing data connections on the wireless network Current consumption is affected by se...

Page 10: ...eep at network provider determined interval Off Host keeps module powered off by asserting Full_Card_Power_Off signal pulled low or left floating Module draws minimal current Disconnected Host power source is disconnected from the module and all voltages associated with the module are at 0 V Table 2 1 Module power states Continued State Details Host is powered Module is powered USB interface activ...

Page 11: ...g is 5 MHz but this can be adjusted to optimize performance in a particular deployment scenario Band Frequencies Band 1 WCDMA 2100 Tx 1920 1980 MHz Rx 2110 2170 MHz Band 2 WCDMA 1900 Tx 1850 1910 MHz Rx 1930 1990 MHz Band 5 WCDMA 850 Tx 824 849 MHz Rx 869 894 MHz Band 8 WCDMA 900 Tx 880 915 MHz Rx 925 960 MHz Table 3 2 GSM frequency band support Band Frequencies GSM 850 Tx 824 849 MHz Rx 869 894 M...

Page 12: ...sociated circuitry should have a nominal impedance of 50 with a return loss of better than 10 dB across each frequency band of operation The system gain value affects both radiated power and regulatory FCC IC CE etc test results Designing custom antennas Consider the following points when designing custom antennas A skilled RF engineer should do the development to ensure that the RF performance is...

Page 13: ...od ground connection to the module through the host connector Connect to system ground using the module s mounting hole Minimize ground noise leakage into the RF Depending on the host board design noise could potentially be coupled to the module from the host board This is mainly an issue for host designs that have signals traveling along the length of the module or circuitry operating at both end...

Page 14: ...ity 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 Wireless devices such as AirPrime embedded modules transmit in burst...

Page 15: ...ment outlined in 3GPP 51 010 GSM section 12 2 1 of the same test name Note that antenna impedance affects radiated emissions which must be compared against the conducted 50 ohm emissions baseline AirPrime embedded modules meet the 50 ohm conducted emissions requirement Note GSM spurious emissions are most likely to have RSE issues but in general RSE requirements must be met on all models with user...

Page 16: ...Hardware Integration Guide 16 Proprietary and Confidential Contents subject to change 4112940 ...

Page 17: ...Wireless offers professional services based assistance to OEMs with the testing and certification process if required Important notice Because of 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 Although significant delays or losses of data are rare when wireless devices such as the Sie...

Page 18: ...The EM8805 wireless module may be used normally at this time Important compliance information for North American users Note Details are preliminary and subject to change The EM8805 wireless module has been granted modular approval for mobile applications Integrators may use the EM8805 wireless module in their final products without additional FCC certification if they meet the following conditions...

Page 19: ...CC IC RF exposure guidelines The end product with an embedded EM8805 wireless module 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 Device Technology Band Frequency MHz...

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Page 21: ...inuous waveform dB Decibel 10 x log10 P1 P2 P1 is calculated power P2 is reference power Decibel 20 x log10 V1 V2 V1 is calculated voltage V2 is reference voltage dBm 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 watts DC HSPA Dua...

Page 22: ...ware Over The Air Technology used to download firmware upgrades directly from the service provider over the air FOV Field Of View FSN Factory Serial Number A unique serial number assigned to the mini card during manufacturing GCF Global Certification Forum GLONASS Global Navigation Satellite System A Russian system that uses a series of 24 satellites in middle circular orbit to provide navigationa...

Page 23: ...e or infrared light LHCP Left Hand Circular Polarized LNA Low Noise Amplifier LPM Low Power Mode LPT Line Print Terminal MCS Modulation and Coding Scheme MHz Megahertz 10e6 Hz NAS AS Network Access Server NC No Connect NIC Network Interface Card NMEA National Marine Electronics Association OEM Original Equipment Manufacturer a company that manufactures a product and sells it to a reseller OFDMA Or...

Page 24: ...where service is obtained from a cellular service provider that is not the subscriber s provider RSE Radiated Spurious Emissions RSSI Received Signal Strength Indication SDK Software Development Kit SED Smart Error Detection Sensitivity Audio Measure of lowest power signal that the receiver can measure Sensitivity RF Measure of lowest power signal at the receiver input that can provide a prescribe...

Page 25: ...Electronics Industry Association A standards setting trade organization whose members provide communications and information technology products systems distribution services and professional services in the United States and around the world Consult www tiaonline org TIS Total Isotropic Sensitivity TRP Total Radiated Power UDK Universal Development Kit for PCI Express Mini Cards UE User Equipment...

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Page 27: ...s required host module 7 D desense See RF diversity antenna disabling 13 E EDGE connector required 7 F filtering RF desense 14 frequency band support GSM 11 WCDMA 11 G gain maximum 18 grounding connection considerations 13 GSM frequency band support 11 I impedance module antenna 12 industry approvals 17 interference device generated 14 host generated 14 wireless devices 14 M module power states 9 ...

Page 28: ...14 harmonic energy filtering 14 mitigation suggestions 14 shielding suggestions 14 interference other devices 14 wireless devices 14 RF bands supported GSM 11 WCDMA 11 RF specifications 11 RSE 15 S sensitivity radiated measurement overview 15 shielding module compliance 12 reducing RF desense 14 SIM connector required 7 specifications RF 11 W WCDMA frequency band support 11 Z ZIF Zero Intermediate...

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