Sierra Wireless AirPrime EM7700, Hardware Integration Manual

Page 1: ...AirPrime EM7700 Hardware Integration Guide 4112206 Rev 2 ...

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Page 3: ...ircraft the Sierra Wireless modem MUST BE POWERED OFF When operating the Sierra Wireless modem 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 modems may be used at this time The driver or operator of any vehicle should not operate the Sierra Wire...

Page 4: ...rademarks of Sierra Wireless Windows is a registered trademark of Microsoft Corporation 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 Revision History Sales Desk Phone 1 604 232 1488 Hours 8 00 AM...

Page 5: ...ntenna and cabling 12 Interference and sensitivity 13 Methods to mitigate decreased Rx performance 13 Radiated Spurious Emissions RSE 14 Radiated sensitivity measurement 14 Power supply noise 14 Interference from other wireless devices 14 Host generated RF interference 15 Device generated RF interference 15 Regulatory Information 17 Important notice 17 Safety and hazards 17 Important compliance in...

Page 6: ...AirPrime EM7700 Hardware Integration Guide 6 Proprietary and Confidential 4112206 ...

Page 7: ...pment platform is available from Sierra Wireless for evaluating and developing with the EM7700 The Universal Development Kit UDK for AirPrime MC series modules and a separate adapter board and RF cable may be ordered to use the UDK with the EM7700 The UDK contains hardware components for evaluating and developing with the module including Development board Cables Antennas Band 17 is not supported ...

Page 8: ...rsa a Manufacturers part numbers are for reference only and are subject to change Choose connectors that are appropriate for your own design Connector type Description RF cables Mate with I PEX MHF A13 connectors Two connector jacks FPC 70 pin Hirose Flexible Printed Circuit FPC connector FH29BJ 70S 0 2SHW 05 SIM Industry standard connector Type depends on how host device exposes the SIM socket Ex...

Page 9: ...an independent power supply or protection circuits to guard against electrical issues The module s power state is controlled by the host s assertion deassertion of POWER_ON and RESET_N The module also monitors its supply voltage and requests shutdown if the supply is insufficient Power signals The module must be connected to a 3 7V power supply For detailed pinout and voltage current requirements ...

Page 10: ...ss network Current consumption is affected by several factors including Radio band being used Transmit power Receive gain settings Data rate Low power Airplane mode Module is active State is controlled by host interface using software commands CFUN 0 1 AT Command Set for User Equipment UE Release 6 Doc 3GPP TS 27 007 Sleep Normal state of module between calls or data connections Module cycles betw...

Page 11: ...ance if possible use the mounting holes to attach ground the device to a metal chassis Table 3 1 LTE frequency band support Band Frequencies Band 4 AWS Tx 1710 1755 MHz Rx 2110 2155 MHz Band 17 Tx 704 716 MHz Rx 734 746 MHz Table 3 2 HSPA frequency band supporta a WCDMA channel spacing is 5 MHz but this can be adjusted to optimize performance in a particular deployment scenario Band Frequencies Ba...

Page 12: ...erating at both ends of the module interconnects Shielding The module is fully shielded to protect against EMI and must not be removed Antenna and cabling When selecting the antenna and cable it is critical to RF performance to match antenna gain and cable loss Choosing the correct antenna and cabling When matching antennas and cabling The antenna and associated circuitry should have a nominal imp...

Page 13: ...e two antennas may experience difference interference effects signal distortion delay etc when one antenna receives a degraded signal the other may not be similarly affected Interference and sensitivity Several sources of interference can affect the RF performance of the module RF desense Common sources include power supply noise and device generated RF RF desense can be addressed through a combin...

Page 14: ...rement A wireless host device contains many noise sources that contribute to a reduction in Rx performance 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 Power supply noise...

Page 15: ...nic computing devices generate RF interference that can negatively affect the receive sensitivity of the module 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...

Page 16: ...AirPrime EM7700 Hardware Integration Guide 16 Proprietary and Confidential 4112206 ...

Page 17: ...ly 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 situations where failure to transmit or receive data could result in damage of any kind to the user or any other party including but not limited to personal injury death or ...

Page 18: ...ay use the EM7700 modem in their final products without additional FCC certification if they meet the following conditions Otherwise additional FCC approvals must be obtained 1 At least 20 cm separation distance between the EM7700 antenna and the user s body must be maintained at all times 2 To comply with FCC regulations limiting both maximum RF output power and human exposure to RF radiation the...

Page 19: ...e 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 Frequency MHz Maximum Conducted Power dBm Maximum Antenna Gain dBi EM7700 module UMTS 824 849 24 6 5 UMTS 1850 1910 24 9 0 LTE ...

Page 20: ...AirPrime EM7700 Hardware Integration Guide 20 Proprietary and Confidential 4112206 ...

Page 21: ...t EDGE Enhanced Data rates for GSM Evolution EM Embedded Module ESD ElectroStatic Discharge FER Frame Error Rate a measure of receive sensitivity GPRS General Packet Radio Services GPS Global Positioning System GSM Global System for Mobile communications Hz Hertz 1 cycle second inrush current Peak current drawn when a device is connected or powered on IS 2000 3G radio standards for voice and data ...

Page 22: ...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 prescribed BER BLER SNR value at the receiver output SIM Subscriber Identity Module SNR Signal to Noise Ratio SOF Start of Frame a USB function UART Universal Asynchronous Receiver Transmitter UDK Universal Development Kit PCI Express Mini Card Dev Kit...

Page 23: ...rt GPS 11 HSPA 11 LTE 11 G gain maximum 18 GPS frequency band support 11 grounding connection considerations 12 H HSPA frequency band support 11 I impedance module antenna 13 interference device generated 15 host generated 15 power supply noise 14 wireless devices 14 L LTE frequency band support 11 M module power states 10 N noise leakage minimizing 12 RF interference power supply 14 P PCB multi l...

Page 24: ...ions 13 shielding suggestions 13 integration 11 15 interference other devices 15 power supply 14 wireless devices 14 RF bands supported HSPA 11 LTE 11 RSE 14 S sensitivity radiated measurement overview 14 shielding module compliance 12 reducing RF desense 13 SIM connector required 8 U UDK Universal Development Kit components included 7 Universal Development Kit UDK components included 7 Z ZIF Zero...

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