Sierra Wireless AirPrime EM7655, Hardware Integration Manual

Page 1: ...AirPrime EM7655 Hardware Integration Guide 4112881 Rev 1 Distribution under NDA only Contents subject to change...

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Page 3: ...flight In aircraft 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...

Page 4: ...s 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...

Page 5: ...connection 14 Interference and sensitivity 14 Interference from other wireless devices 14 Host generated RF interference 14 Device generated RF interference 15 Methods to mitigate decreased Rx perfor...

Page 6: ...Hardware Integration Guide 6 Proprietary and Confidential Contents subject to change 4112881...

Page 7: ...DK for AirPrime MC series modules and a separate adapter board and RF cable may be ordered to use the UDK with the EM7655 The UDK contains hardware components for evaluating and developing with the mo...

Page 8: ...Hardware Integration Guide 8 Proprietary and Confidential Contents subject to change 4112881...

Page 9: ...1 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 POWER_ON is...

Page 10: ...determined interval Off Host keeps module powered off by asserting POWER_ON signal pulled low or left floating Module draws minimal current See POWER_ON and RESET_N on page 33 for more information Dis...

Page 11: ...Band 25 Tx 1850 1915 MHz Rx 1930 1995 MHz Table 3 2 WCDMA frequency band support1 1 WCDMA channel spacing is 5 MHz but this can be adjusted to optimize performance in a particular deployment scenario...

Page 12: ...o attach ground the device to a metal chassis Note If the antenna connection is shorted or open the modem will not sustain permanent damage Shielding The module is fully shielded to protect against EM...

Page 13: ...erference 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 pe...

Page 14: ...16 Note The EM7655 is based on ZIF Zero Intermediate Frequency technologies When performing EMC Electromagnetic Compatibility tests there are no IF Intermediate Frequency components from the module t...

Page 15: ...nterference However the antenna cannot be shielded for obvious reasons In most instances it is necessary to employ shielding on the components of the host device such as the main processor and paralle...

Page 16: ...designed antennas Radiated sensitivity measurement A wireless host device contains many noise sources that contribute to a reduction in Rx performance To determine the extent of any receiver performan...

Page 17: ...f the OEM Sierra 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...

Page 18: ...American users Note Details are preliminary and subject to change The EM7655 modem has been granted modular approval for mobile applications Integrators may use the EM7655 modem in their final product...

Page 19: ...must clearly indicate the operating requirements and conditions that must be observed to ensure compliance with current FCC IC RF exposure guidelines Device Technology Band Frequency MHz Maximum cond...

Page 20: ...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 portabl...

Page 21: ...tions Compare to 1xEV DO 3GPP 3rd Generation Partnership Project 8PSK Octagonal Phase Shift Keying AGC Automatic Gain Control API Application Programming Interface BER Bit Error Rate A measure of rece...

Page 22: ...Effective Radiated Power ESD Electrostatic Discharge FCC Federal Communications Commission The U S federal agency that is responsible for interstate and foreign communications The FCC regulates comme...

Page 23: ...red on inter RAT Radio Access Technology IOT Interoperability Testing IS Interim Standard After receiving industry consensus the TIA forwards the standard to ANSI for approval IS 2000 3G radio standar...

Page 24: ...antenna PA Power Amplifier packet A short fixed length block of data including a header that is transmitted as a unit in a communications network PCB Printed Circuit Board PCS Personal Communication S...

Page 25: ...ngle Output antenna technology that uses a single antenna at both the transmitter side and the receiver side SKU Stock Keeping Unit identifies an inventory item a unique code consisting of numbers or...

Page 26: ...card UL Uplink mobile to network UMTS Universal Mobile Telecommunications System USB Universal Serial Bus USIM Universal Subscriber Identity Module UMTS VCC Supply voltage VSWR Voltage Standing Wave R...

Page 27: ...grounding 14 connectors required host module 7 D desense See RF diversity antenna disabling 13 F filtering RF desense 15 FPC connector required 7 frequency band support CDMA 12 GSM 11 LTE 11 WCDMA 11...

Page 28: ...energy filtering 15 mitigation suggestions 15 shielding suggestions 15 interference other devices 15 wireless devices 14 RF bands supported CDMA 12 GSM 11 LTE 11 WCDMA 11 RF specifications 11 16 RSE 1...

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