UserManual WirelessCommunicationDevice May07,2020 1 Introduction 1 Thedevicecomespreconfiguredfromthefactory.Itisreadytouse.TheFlex2Lappearstoa useroraserverapplicationasanendpointdevice.Itcanbe queried,updatedand configured either through a serial connection,an over the air IPconnection,or through SMS messaging. The Flex2L presents itself over these connections as an enhanced cellular modem with attachedfunctionalelements.Theseelementsinclude:
Input/outputsdedicatedforignition,relay,buzzer,andgeneralpurpose GPSlocationengine Accelerometer SerialUARTport Timers Watchdoglockupprotection Powermanagement Eventreporting Voltagemonitoring Access to these elements and general purpose interface is done through an extended AT commandset.Configurationparametersarestoredtoflashmemoryandareautomaticallyused onthenextpowerupevent.Formoredetails,pleasereferencetheATCommanddocument. 2 HardwareDesign 2.1 BasicHardware Items CellularModem Requirement BasedonQuectelEC21AModule CellularNetworkInterface SupportforLTEB2,B4,B12WCDMAB2B5 2 Frequency CellularAntenna GPSAntenna UIMrequirement BatteryMonitor Buildinbatterymanager Interface DedicateTimers Watchdog MotionDetect LED B2:TX(18501910)MHZRX(19301990)MHZ B4:TX(17101755)MHZRX(21102155)MHZ B12:TX(699716)MHZRX(729746)MHZ WCDMAB2:1900MHz WCDMAB5:850MHz Internalsingleantenna Dedicatehighperformanceceramicantenna Support NoSupportHotPlug/Unplug 3FFSIM InterruptMode Internalanaloginput Yes DebugUART 12VDCInput1Acurrent,Ground RelayDrive(OpenDrain,500mAcurrent) DedicatedOutputforbuzzercontrol IgnitionInput GPIO Yes ExternalHWviaMCU SupportedGPS/GSensor 3LEDSupported 1 RED;1Green;1Orange builtinbattery4400mAHLion Battery WorkingTime Powerswitch PowerCablecolor PowerCableconnectortype PowerConsumption 6months No 4or6colors 12pinconnector+5pin
<5Watts The Flex2L provides support for specialized hardware features through extendedATcommands. Thefeaturessupportedincludethefollowing:
Accelerometer Theaccelerometercanbeusedformotiondetectionanddriverbehaviormonitoring. 3 3.2 RemoteUpdate The Flex2L supports OTA field upgrades of the resident application. An over the air FTP connectionismadeoveranIPconnection.Areplacementfileisthentransferredfromaserver totheFlex2Landthatfilereplacesthepreviousapplicationimage. 3.3 PowerModes TheFlex2LdevicesupportsseveralpowermodesthataresetbyATcommands.Infullpower mode the GPS is active and the cellular subsystem will maintain a persistent cellular connection whenever service is available. IP connection is maintained according to the configurationofthedevice. The device can be put in low power mode whenever it runs on a backup battery or if the externalbatteryisloworifitisnotmoving.InlowpowermodetheGPSisnotrunningand the LEDs are off. The device would return to full power whenever an event occurs that triggersareport.Thoseeventsinclude:
IPchange Periodicreport GPIOchange Batterythreshold Heartbeat Watchdog Powerup Tripstartandstop Ignition Anyhardwareorsoftwareresetwillreturnthedevicetofullpowermode. 4 4 TestMethod 4.1 Hardware TestItem BasebandFunctionTest Description PowerInputTest PowerConsumptionandCurrentTest HeatDissipationTest UARTStabilityTest GPIOLevelTest LEDStabilityTest DropDownTest ESDTest High/LowTemperatureTest Humidity Test RFPerformanceTest GPSPerformanceTest AntennaPerformance Test RFTest 4.2 SoftwareTest TestEnvironmentConstruct MessageTestenvironment 1.USBdongleandPCasmessageserver 2.SendmessagetoFlex2L UDPTestenvironment 1.ConnectdongletoPCandcreatedialupasipserver 2.Flex2LcreateIPconnectiontoserver UARTTestenvironment 1.ConnectFlex2LtoPCwithcomserialcable 2.OpenTerminaltoolandsendatcommand 3.Responsecanbeshownatterminalwindow 5 MechanicalStructure(mm) eopar d 6 FCC IC Statement This device complies with part 15 of the FCC rules and RSS-247 of Industry Canada. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorise aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could void the users authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
-- Reorient or relocate the receiving antenna.
-- Increase the separation between the equipment and receiver. connected.
-- Consult the dealer or an experienced radio/TV technician for help.
-- Connect the equipment into an outlet on a circuit different from that to which the receiver is This equipment complies with FCC and IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. 7