HL8548 - Hardware Integration Guide - Rev1.2

FCC ID: N7NHL8548

Users Manual

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FCCID_3212037

Hardware Integration Guide


                AirPrime HL8548




                                     4119996
                                          1.2
                             October 24, 2016


 Hardware Integration Guide


   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. 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 loss of property. Sierra Wireless
   accepts no responsibility for damages of any kind resulting from delays or errors in data transmitted or
   received using the Sierra Wireless modem, or for failure of the Sierra Wireless modem to transmit or
   receive such data.



   Safety and Hazards
   Do not operate the Sierra Wireless modem in areas where cellular modems are not advised without
   proper device certifications. These areas include environments where cellular radio can interfere such
   as explosive atmospheres, medical equipment, or any other equipment which may be susceptible to
   any form of radio interference. The Sierra Wireless modem can transmit signals that could interfere
   with this equipment. Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is
   on the ground or in 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 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 Wireless modem while in control of
   a vehicle. Doing so will detract from the driver or operator’s control and operation of that vehicle. In
   some states and provinces, operating such communications devices while in control of a vehicle is an
   offence.



   Limitations of Liability
   This manual is provided “as is”. Sierra Wireless makes no warranties of any kind, either expressed or
   implied, including any implied warranties of merchantability, fitness for a particular purpose, or
   noninfringement. The recipient of the manual shall endorse all risks arising from its use.
   The information in this manual is subject to change without notice and does not represent a
   commitment on the part of Sierra Wireless. SIERRA WIRELESS AND ITS AFFILIATES
   SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL,
   GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING,
   BUT NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR
   REVENUE ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS
   PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE
   POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY
   THIRD PARTY.
   Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its affiliates aggregate liability
   arising under or in connection with the Sierra Wireless product, regardless of the number of events,
   occurrences, or claims giving rise to liability, be in excess of the price paid by the purchaser for the
   Sierra Wireless product.




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 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
   © 2016 Sierra Wireless. All rights reserved.



   Trademarks
   Sierra Wireless®, AirPrime®, AirLink®, AirVantage®, WISMO®, ALEOS® and the Sierra Wireless and
   Open AT logos are registered trademarks of Sierra Wireless, Inc. or one of its subsidiaries.
   Watcher® is a registered trademark of NETGEAR, Inc., used under license.
   Windows® and Windows Vista® are registered trademarks of Microsoft Corporation.
   Macintosh® and Mac OS X® are registered trademarks of Apple Inc., registered in the U.S. and other
   countries.
   QUALCOMM® is a registered trademark of QUALCOMM Incorporated. Used under license.
   Other trademarks are the property of their respective owners.



   Contact Information
    Sales information and technical support,      Web: sierrawireless.com/company/contact-us/
    including warranty and returns                Global toll-free number: 1-877-687-7795
                                                  6:00 am to 6:00 pm PST

    Corporate and product information             Web: sierrawireless.com




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 Hardware Integration Guide


   Document History
    Version    Date                  Updates

    1.0        September 29, 2016    Creation
    1.1        October 14, 2016      Updated to match with the data in the HL8548 PTS
    1.2        October 24, 2016      Updated 5.2 IC Regulations




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              Contents
   1. INTRODUCTION .................................................................................................. 8
   2. POWER INTERFACE ........................................................................................... 9
       2.1.          Power Supply .................................................................................................................... 9
       2.2.          Power Off Sequence ......................................................................................................... 9
       2.3.          Sleep Mode Management ................................................................................................. 9

   3. RF INTERFACE.................................................................................................. 10
       3.1.          Supported RF Bands .......................................................................................................10
       3.2.         RF Connection .................................................................................................................10
              3.2.1.    Choosing the Correct Antenna and Cabling ............................................................11
              3.2.2.    Designing Custom Antennas ...................................................................................11
              3.2.3.    Determining the Antenna’s Location ........................................................................11
       3.3.          RF Performances ............................................................................................................11

   4. ESD GUIDELINES.............................................................................................. 12
       4.1.          SIM Card .........................................................................................................................12
       4.2.          USB .................................................................................................................................13

   5. LEGAL INFORMATION ..................................................................................... 14
       5.1.          FCC Regulations .............................................................................................................14
       5.2.         IC Regulations .................................................................................................................16
              5.2.1.    Radiation Exposure Statement ................................................................................16

   6. REFERENCES ................................................................................................... 17
       6.1.          Reference Documents .....................................................................................................17
       6.2.          Terms and Abbreviations.................................................................................................17




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           List of Figures
   Figure 1.   EMC and ESD Components Close to the SIM ................................................................ 12
   Figure 2.   ESD Protection for USB .................................................................................................. 13




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          List of Tables
   Table 1.   Power Supply .................................................................................................................... 9
   Table 2.   Supported Bands ............................................................................................................. 10
   Table 3.   Conducted RX Sensitivity (dBm) ..................................................................................... 11
   Table 4.   Approved Antenna Types ................................................................................................ 16




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          1. Introduction
   The AirPrime HL8548 belongs to the AirPrime MC Series product family and provides data
   connectivity on wireless networks (as listed in Table 2 Supported Bands).
   The HL8548 supports a large variety of interfaces such as USB 2.0, UART, GPIOs and SIM to provide
   customers with the highest level of flexibility in implementing high-end solutions.




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              2. Power Interface

   2.1.         Power Supply
   The AirPrime HL8548 is supplied through the VBAT signal.

   Table 1.   Power Supply


    Pin Numbers           Supply                                    Minimum     Typical       Maximum

    2, 24, 39, 41, 52     VBAT voltage (V)                          3.2*        3.7           4.5

       *         This value has to be guaranteed during the burst

   Note:        Load capacitance for VBAT is around 30µF ± 20% embedded inside the accessory board.



   2.2.         Power Off Sequence
   To power the HL8548 off:
       1. Put the accessory board in low power mode (LPM) by sending either AT+KSLEEP=1 or
          AT+CPWROFF=1.
       2. Wait for at least 10 seconds.
       3. Remove the power supply to VBAT.



   2.3.         Sleep Mode Management
   Use AT+KSLEEP=1 to allow the accessory board to automatically enter sleep mode while the USB
   interface is in use.
   When AT+KSLEEP=2, the accessory board will never enter sleep mode.




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              3. RF Interface
   The RF interface of the HL8548 allows transmission of RF signals. This interface has a 50Ω nominal
   impedance.



   3.1.          Supported RF Bands
   The AirPrime HL8548 supports the RF bands listed in the table below.

   Table 2.    Supported Bands


    RF Band         Transmit band (Tx)           Receive band (Rx)            Maximum Output Power

    UMTS B1         1922 to1978 MHz              2112 to 2168 MHz             23 dBm (+/- 2dBm) Class 3bis
    UMTS B2         1852 to 1908 MHz             1932 to 1988 MHz             23 dBm (+/- 2dBm) Class 3bis
    UMTS B5         826 to 847 MHz               871 to 892 MHz               23 dBm (+/- 2dBm) Class 3bis
    UMTS B6         832 to 838 MHz               877 to 883 MHz               23 dBm (+/- 2dBm) Class 3bis
    UMTS B8         882 to 913 MHz               927 to 958 MHz               23 dBm (+/- 2dBm) Class 3bis
    UMTS B19        832.4 to 842.6 MHz           877.4 to 887.6 MHz           23 dBm (+/- 2dBm) Class 3bis
    GSM 850         824 to 849 MHz               869 to 894 MHz               2 Watts GSM, GPRS and EDGE
    E-GSM 900       880 to 915 MHz               925 to 960 MHz               2 Watts GSM, GPRS and EDGE
    DCS 1800        1710 to 1785 MHz             1805 to 1880 MHz             1 Watt GSM, GPRS and EDGE
    PCS 1900        1850 to 1910 MHz             1930 to 1990 MHz             1 Watt GSM, GPRS and EDGE




   3.2.          RF Connection
   When attaching antennas to the HL8548:
             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 Accessory Board.
   Note:         To disconnect the antenna, make sure you use the Hirose U.FL connector removal tool (P/N UFL-
                 LP-N-2(01)) to prevent damage to the Accessory Board or coaxial cable assembly.

             Match coaxial connections between the Accessory Board and the antenna to 50Ω.
             Minimize RF cable losses to the antenna; the recommended maximum cable loss for antenna
              cabling is 0.5 dB.
             To ensure best thermal performance, mounting holes must be used to attach (ground) the
              device to the main PCB ground or a metal chassis.
   Note:         If the antenna connection is shorted or open, the HL8548 will not sustain permanent damage.




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 Hardware Integration Guide


   3.2.1.           Choosing the Correct Antenna and Cabling
   When matching antennas and cabling:
             The antenna (and associated circuitry) should have a nominal impedance of 50Ω with a
              recommended 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, etc.) test results.



   3.2.2.           Designing Custom Antennas
   Note that in designing custom antennas, a skilled RF engineer should do the development to ensure
   that the RF performance is maintained.



   3.2.3.           Determining the Antenna’s Location
   When deciding where to put the antennas:
             Antenna location may affect RF performance. Although the Accessory Board is shielded to
              prevent interference in most applications, the placement of the antenna is still very important -
              if the host device is insufficiently shielded, high levels of broadband noise or spurious
              interferences can degrade the HL8548’s performance.
             Connecting cables between the Accessory Board and the antenna must have 50Ω
              impedance. If the impedance of the Accessory Board is mismatched, RF performance is
              reduced significantly.
             Antenna cables should be routed, if possible, away from noise sources (switching power
              supplies, LCD assemblies, etc.). If the cables are near the noise sources, the noise may be
              coupled into the RF cable and into the antenna.



   3.3.           RF Performances
   RF performances are compliant with the ETSI recommendation GSM 05.05.
   Note:          Values in the table below are preliminary and subject to change.


   Table 3.     Conducted RX Sensitivity (dBm)


    Frequency Band                                            Typical Sensitivity (dBm)

    GSM850/EGSM                                               -109
    DCS/PCS                                                   -108
    UMTS B1                                                   -110
    UMTS B2                                                   -110
    UMTS B5/6                                                 -110
    UMTS B8                                                   -110




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               4. ESD Guidelines

   4.1.         SIM Card
   Decoupling capacitors must be added according to the drawings below as close as possible to the
   SIM card connectors on UIM1_CLK, UIM1_RST, UIM1_VCC and UIM1_DATA signals to avoid EMC
   issues and to comply with the requirements of ETSI and 3GPP standards covering the SIM electrical
   interface.
   A typical schematic including SIM detection is provided below.




   Figure 1.   EMC and ESD Components Close to the SIM




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 Hardware Integration Guide                                                               ESD Guidelines


   4.2.          USB
   When the USB interface is externally accessible, it is required to have ESD protection on the USB_D+
   and USB_D- signals.




   Figure 2.   ESD Protection for USB


   Sierra Wireless recommends using a 90Ω DLP0NSN900HL2L EMC filter and an RCLAMP0503N or
   ESD5V3U2U-03LRH ESD diode.




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           5. Legal Information

   5.1.            FCC Regulations
   The HL8548 has been granted modular approval for mobile applications. Integrators may use the
   HL8548 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 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 maximum antenna gain including cable loss in a mobile-only
          exposure condition must not exceed:
                  3.0 dBi in the cellular band
                  5.0 dBi in the PCS band


       3. The HL8548 may transmit simultaneously with other collocated radio transmitters within a
          host device, provided the following conditions are met:
                  Each collocated radio transmitter has been certified by FCC for mobile application.
                  At least 20 cm separation distance between the antennas of the collocated transmitters
                   and the user’s body must be maintained at all times.
                  The output power and antenna gain must not exceed the limits and configurations
                   stipulated in the following table.



                                                            Maximum Antenna Gain (dBi)
                                             Frequency                                        EIRP Limits
    Device             Technology
                                             (MHz)                                            (dBm)
                                                            Standalone    Collocated

                       GPRS/EDGE 850         824-849        3             2                   -
                       GPRS/EDGE 1900        1850-1910      5             5                   -
    HL8548
                       UMTS 850              824-849        3             2                   -
                       UMTS 1900             1850-1910      5             5                   -
                                             2400-2500      -             -                   27
                       WLAN
                                             5150-580       -             -                   27
    Collocated                               2300-2400      -             -                   27
    transmitters       WiMAX                 2500-2700      -             -                   27
                                             3300-3800      -             -                   27
                       BT                    2400-2500      -             -                   20




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 Hardware Integration Guide                                                                         Legal Information

       4. The RF signal must be routed on the application board using tracks with a 50Ω characteristic
          impedance. Basically, the characteristic impedance depends on the dielectric, the track width
          and the ground plane spacing. In order to respect this constraint, Sierra Wireless
          recommends using MicroStrip or StripLine structure and computing the Tracks width with a
          simulation tool (like AppCad shown in the figure below and that is available free of charge at
          http://www.agilent.com).




           If a multi-layered PCB is used, the RF path on the board must not cross any signal (digital,
           analog or supply).


       5. A label must be affixed to the outside of the end product into which the HL8548 is
          incorporated, with a statement similar to the following:
           This device contains FCC ID: N7NHL8548


       6. 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 RF exposure
          guidelines.


   The end product with an embedded HL8548 may also need to pass the FCC Part 15 unintentional
   emission testing requirements and be properly authorized per FCC Part 15.
   Note:       If this accessory board is intended for use in a portable device, you are responsible for separate
               approval to satisfy the SAR requirements of FCC Part 2.1093.




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 Hardware Integration Guide                                                                   Legal Information


   5.2.         IC Regulations
   This device complies with Industry Canada’s license-exempt RSSs. Operation is subject to the
   following two conditions:
       1. This device may not cause interference; and
       2. This device must accept any interference, including interference that may cause undesired
          operation of the device.


   Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio
   exempts de licence. L’exploitation est autorisée aux deux conditions suivantes:
       1. l’appareil ne doit pas produire de brouillage;
       2. l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le
          brouillage est susceptible d’en compromettre le fonctionnement.



   5.2.1.         Radiation Exposure Statement
   This equipment complies with Canada radiation exposure limits set forth for an uncontrolled
   environment.
   This equipment should be installed and operated with minimum distance 20cm between the radiator
   and your body.
   Cet équipement est conforme Canada limites d'exposition aux radiations dans un environnement non
   contrôlé.
   Cet équipement doit être installé et utilisé à distance minimum de 20cm entre le radiateur et votre
   corps.


   This radio transmitter (IC: 2417C-HL8548) has been approved by Industry Canada to operate with the
   antenna types listed below with the maximum permissible gain indicated. Antenna types not included
   in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited
   for use with this device.
   Le présent émetteur radio (IC: 2417C-HL8548) a été approuvé par Industrie Canada pour fonctionner
   avec les types d'antenne énumérés ci dessous et ayant un gain admissible maximal. Les types
   d'antenne non inclus dans cette liste, et dont le gain est supérieur au gain maximal indiqué, sont
   strictement interdits pour l'exploitation de l'émetteur.

   Table 4.   Approved Antenna Types


    Type                                 Gain                              Connector

    Dipole                               2 dBi                             R-SMA




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                6. References

   6.1.          Reference Documents
          [1]   AirPrime HL8548 and HL8548-G Product Technical Specification
                Reference Number: 4114663



   6.2.          Terms and Abbreviations
    Abbreviation          Definition

    ADC                   Analog to Digital Converter
    AGC                   Automatic Gain Control
    AT                    Attention (prefix for modem commands)
    CDMA                  Code Division Multiple Access
    CF3                   Common Flexible Form Factor
    CLK                   Clock
    CODEC                 Coder Decoder
    CPU                   Central Processing Unit
    DAC                   Digital to Analog Converter
    DTR                   Data Terminal Ready
    EGNOS                 European Geostationary Navigation Overlay Service
    EMC                   Electromagnetic Compatibility
    EMI                   Electromagnetic Interference
    EN                    Enable
    ESD                   Electrostatic Discharges
    ETSI                  European Telecommunications Standards Institute
    FDMA                  Frequency-division multiple access
    GAGAN                 GPS aided geo augmented navigation
    GLONASS               Global Navigation Satellite System
    GND                   Ground
    GNSS                  Global Navigation Satellite System
    GPIO                  General Purpose Input Output
    GPRS                  General Packet Radio Service
    GSM                   Global System for Mobile communications
    Hi Z                  High impedance (Z)
    IC                    Integrated Circuit
    IMEI                  International Mobile Equipment Identification
    I/O                   Input / Output
    LED                   Light Emitting Diode
    LNA                   Low Noise Amplifier
    MAX                   Maximum



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 Hardware Integration Guide                                                                References


    Abbreviation       Definition

    MIN                Minimum
    MSAS               Multi-functional Satellite Augmentation System
    N/A                Not Applicable
    PA                 Power Amplifier
    PC                 Personal Computer
    PCB                Printed Circuit Board
    PCL                Power Control Level
    PLL                Phase Lock Loop
    PWM                Pulse Width Modulation
    QZSS               Quasi-Zenith Satellite System
    RF                 Radio Frequency
    RFI                Radio Frequency Interference
    RMS                Root Mean Square
    RST                Reset
    RTC                Real Time Clock
    RX                 Receive
    SCL                Serial Clock
    SDA                Serial Data
    SIM                Subscriber Identification Module
    SMD                Surface Mounted Device/Design
    SPI                Serial Peripheral Interface
    SW                 Software
    PSRAM              Pseudo Static RAM
    TBC                To Be Confirmed
    TBD                To Be Defined
    TP                 Test Point
    TX                 Transmit
    TYP                Typical
    UART               Universal Asynchronous Receiver-Transmitter
    UICC               Universal Integrated Circuit Card
    USB                Universal Serial Bus
    UIM                User Identity Module
    VBATT              Main Supply Voltage from Battery or DC adapter
    VSWR               Voltage Standing Wave Ratio
    WAAS               Wide Area Augmentation System




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Document Created: 2016-11-04 15:42:56
Document Modified: 2016-11-04 15:42:56

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