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NEBRA LoRa CONCENTRATOR MODULEScan to view online documents

TABLE OF CONTENTSProduct Overview 3Specification 4Dimensions 4RF Characteristics 5Block Diagram 5Interfaces 6Power.7SPI.7USB.7I2C & UART.7GPS.7RESET.7Antenna interface.7Board Pinout 8Schematic Diagram SX1302/3 9Schematic Diagram EVA-M8M 10Schematic Diagram mPCIe 11Schematic Diagram SX1250 12Board Pinout 13Operating Frequencies 15Environmental Requirements 16Safety Instructions 16Compliance Information 17Certification.17Certification Codes.17RoHS.17Open Source Hardware Certification.17Trademarks 18Warranty Information 18Contact Information 18Change Notes 182

Product OverviewThe Nebra LoRaWAN module is a LoRaWANConcentrator module with mini-PCIe form factorbased on the SX1302/3. This enables easyintegration into routers and other networkingequipment, adding gateway capabilities. Themodule can be used in any embedded platformoffering a mini-PCIe slot with an SPI or USBconnection*.Despite its small size this is an 8 channelconcentrator module SF5 - SF12 . By integratingit together with a computing core a fully fledgedgateway solution can easily be created.Features: Mini PCIe form factor, mounted heat-sink.SX1302/3 base band processor emulates 49 xLoRa demodulators, 10 parallel demodulationpaths. It supports 8 uplinks channel and 1downlink channel.2x SX1250 Tx/Rx front-ends high/lowfrequency.Built-in USB to SPI conversion.Operates at 3.3V, making it compatible withstandard 3G/LTE card slots of Mini PCI-e type.Tx power up to 27 dBm, Rx sensitivity down to-141 dBm @ SF12, BW 125 kHz.Supports global license-free frequency band(EU433, CN470, IN865, EU868, US915,AU915, KR920, and AS923).*depending on model3

SpecificationSPECIFICATIONNebra LoRa ConcentratorFrequency MHz868, 915, 433, 470Modulation TypeISM Band LoRa LoRa ChipsetSX1302/3Host InterfaceSPI, USBSensitivity-141dBmMaximum Tx Power27dBm*LEDs Green (Power), Red (Tx), Blue (Rx)Form FactorMini PCI ExpressPower ConsumptionTx (Max) 415mA,Rx 40mA, standby 7.5mAAntenna ConnectoruFlOperating Temperature-40 C to 85 CDimensions94mm (Length) x 70mm (Width) x 10mm (Height)CertificationTBCWeight16g*Maximum Tx power may be capped to a lower amount in some regionsDimensions70mm10mm94mm4

RF CharacteristicsSignal Bandwidth KHzSpreading FactorSensitivity dBm1257-1411257-12525012-1235007-13450012-120Block DiagramNebra LoRaWAN Concentrator integrates one SX1302/3 chip and two SX1250. The otherchip is for RF signal, which represents the core of the device. This provides the related LoRamodem and processing functionalities. Additional signal conditioning circuitry is implementedfor PCI Express Mini Card compliance, and one uFL connector available for external antennaintegration.5

InterfacesThe Nebra concentrator comes with a number of interfaces for its operations and statusindicator. It is designed to be fully automated with very little physical interaction required.3. Antenna connectors5. Status LEDs4. PCI Express Connector2. Heatsink1. Mounting holes1. The mounting holes are required to secure the mPCIe module down when inserted toensure that it doesn’t come lose or disconnect from the socket.2. The heat sink covers the top half of the concentrator module and is used to dissipate anyheat generated from the on-board ICs.3. Depending on your model of Nebra concentrator module you will have either one or twoantenna connectors. The LoRa antenna connector and a GPS antenna connector which areboth U.fl connectors.4. Mini PCI Express connector used to connect the module to another expansion board.The connectors provides all the interface options and communication between the Hostboard and the module.5. There are three status LEDs to indicate some basic functionality. The Green LED indicatesthe module is configured (CFG), Yellow LED (middle) indicates the module is receiving asignal (Rx) and the Red LED indicates it is transmitting a signal (Tx)6

PowerNebra LPWAN Concentrator module must be supplied through the 3.3Vaux pins by aDC power supply. The voltage must be stable, because during this operation the currentdrawn from 3.3Vaux can vary significantly, based on the power consumption profile of theSX1302/3 chip .SPISPI interface is provided on the HOST SCK, HOST MISO, HOST MOSI, HOST CSN pinsof the system connector. The SPI interface gives access to the configuration register ofSX1302/3 via a synchronous full-duplex protocol. Only the slave side is implemented.USBNebra LPWAN Concentrator can support the high speed USB to SPI by the MCU USBbridge. It includes a USB 2.0 compliant interface, representing the interface for anycommunication with an external host application processor. The module itself acts as a USBdevice and can be connected to any USB host equipped with compatible drivers.I2C & UARTNebra module integrates EVA-M8M GPS module which has UART and I2C interface. ThePINs on golden finger provide an UART connection and an I2C connection, which allowsdirect access to the GPS module. The PPS signal is not only connected to SX1302/3internally, but also connected to golden finger which can be used by host board.GPSNebra concentrator card includes the GPS PPS input for received packets time-stamped.RESETNebra concentrator module includes the RESET active-high input signal to reset the radiooperations as specified by the SX1302/3 specification.Antenna interfaceThe module has one RF interfaces over a standard UFL connectors (Hirose U. FL-R-SMT)with a characteristic impedance of 50Ω. The RF port supports both Tx and Rx, providing theantenna interface.LEDsThere are in total four LEDs on the concentrator module that gives an indication of its status.There is one power LED (green) situated in between the two antenna connectors. Thisindicates that the module has power. There is a CFG (Green) LED next to the LoRa antennaconnector, which indicates that the module has been correctly configured. The two LEDsnext to that are Rx (Yellow) and Tx (Red). These LEDs indicate that the module is eitherreceiving signals or transmitting.7

Board Pinout8

Schematic Diagram SX1302/39

Schematic Diagram EVA-M8M10

Schematic Diagram mPCIe11

Schematic Diagram SX125012

Board PinoutPINmPCIEModule PINPOWERDescription1MIC PSX1261 BUSY2VCCVCC3MIC NSX1261 DI014GNDGND5SPK PSX1261 DI026GPIO1GPIO67SPK NSX1261 NSS8UIM PWRNC9GNDGND10UIM DATANC11VCCSX1261 NRESET12UIM CLKNC13NC6MCU NRESET14UIM RESETNC15GNDGND16GPIO2POWER EN17NC5NC18GNDGND19NC4PPSGPS PPS20W DISABLENCNot connected21GNDGND22PERSTSX1302 RESET23NC3GNSS RESET24NC7VCC25NC2GNSS STANDBY26GNDGNDGNDConnected to ground27GNDGNDGNDConnected to ground28GPIO3NC29GNDGND30NC8I2C SCL31NC1HOST UART TX32NC9I2C SDA33MDL RESET N HOST UART RX34GND353V3GNDConnected to groundNot connectedGNDConnected to groundNot connectedNot connectedNot connectedGNDConnected to groundNot connectedGNDGNDConnected to groundConnected to groundReset GPS module3V3Not connectedGNDConnected to groundGNDGNDConnected to groundGNDGNDGNDConnected to ground36USB D-USB DN37GNDGNDGNDConnected to ground38USB D USB DP13

PINmPCIEModule PINPOWERDescription39VCCVCC MAIN3V3Comes from 5V or 3V340GNDGNDGNDConnected to ground41VCCVCC MAIN3V3Comes from 5V or 3V342LED WWANNC43GNDGND44GPIO4JTCK SWCLK45PCM CLKHOST SCK46GPIO5JTMS SWDI047PCM DINHOST MISO48GPIO6NC49PCM DOUTHOST MOSI50GNDGND51PCM SYNCHOST CSN52VCCVCCNot connectedGNDConnected to groundNot connectedGNDConnected to ground3V314

Operating FrequenciesSX1302Nebra SKUDescriptionFrequencyBarcodeNBR-0077Nebra SX1302 LoRa Concentrator (SPI no GPS)915 MHz646648341398NBR-0078Nebra SX1302 LoRa Concentrator (SPI no GPS)868 MHz646648341404NBR-0079Nebra SX1302 LoRa Concentrator (SPI no GPS)470 MHz646648341411NBR-0080Nebra SX1302 LoRa Concentrator (SPI no GPS)433 MHz646648341428NBR-0081Nebra SX1302 LoRa Concentrator (SPI with GPS)915 MHz646648341435NBR-0082Nebra SX1302 LoRa Concentrator (SPI with GPS)868 MHz646648341442NBR-0083Nebra SX1302 LoRa Concentrator (SPI with GPS)470 MHz646648341459NBR-0084Nebra SX1302 LoRa Concentrator (SPI with GPS)433 MHz646648341466NBR-0085Nebra SX1302 LoRa Concentrator (USB no GPS)915 MHz646648341473NBR-0086Nebra SX1302 LoRa Concentrator (USB no GPS)868MHz646648341480NBR-0087Nebra SX1302 LoRa Concentrator (USB no GPS)470 MHz646648341497NBR-0088Nebra SX1302 LoRa Concentrator (USB no GPS)433 MHZ646648341503NBR-0089Nebra SX1302 LoRa Concentrator (USB with GPS)915 MHz646648341510NBR-0090Nebra SX1302 LoRa Concentrator (USB with GPS)868 MHz646648341527NBR-0091Nebra SX1302 LoRa Concentrator (USB with GPS)470 MHz646648341534NBR-0092Nebra SX1302 LoRa Concentrator (USB with GPS)433 MHz646648341541Nebra SKUDescriptionFrequencyBarcodeNBR-0093Nebra SX1303 LoRa Concentrator (SPI no GPS)915 MHz646648341558SX1303NBR-0094Nebra SX1303 LoRa Concentrator (SPI no GPS)868 MHz646648341565NBR-0095Nebra SX1303 LoRa Concentrator (SPI no GPS)470 MHz646648341572NBR-0096Nebra SX1303 LoRa Concentrator (SPI no GPS)433 MHz646648341589NBR-0097Nebra SX1303 LoRa Concentrator (SPI with GPS)915 MHz646648341596NBR-0098Nebra SX1303 LoRa Concentrator (SPI with GPS)868 MHz646648341602NBR-0099Nebra SX1303 LoRa Concentrator (SPI with GPS)470 MHz646648341619NBR-0100Nebra SX1303 LoRa Concentrator (SPI with GPS)433 MHz646648341626NBR-0101Nebra SX1303 LoRa Concentrator (USB no GPS)915 MHz646648341633NBR-0102Nebra SX1303 LoRa Concentrator (USB no GPS)868MHz646648341640NBR-0103Nebra SX1303 LoRa Concentrator (USB no GPS)470 MHz646648341657NBR-0104Nebra SX1303 LoRa Concentrator (USB no GPS)433 MHZ646648341664NBR-0105Nebra SX1303 LoRa Concentrator (USB with GPS)915 MHz646648341671NBR-0106Nebra SX1303 LoRa Concentrator (USB with GPS)868 MHz646648341688NBR-0107Nebra SX1303 LoRa Concentrator (USB with GPS)470 MHz646648341695NBR-0108Nebra SX1303 LoRa Concentrator (USB with GPS)433 MHz64664834170115

Environmental RequirementsThis product should be operated only in a well ventilated environment to ensure there isenough heat dissipation.Unless otherwise indicated, all operating condition specifications are at an ambienttemperature of 25 C. Operation beyond the operating conditions is not recommended andextended exposure beyond them may affect device reliability.Safety InstructionsTo avoid malfunction or damage to this product, please observe the following:Do not expose to water or moistureDo not expose to any source of heat. The Nebra LoRaWAN module is designed for reliableoperation and has been tested at normal ambient room temperatures (25 c)Take care when handling to avoid mechanical, shock, vibration or electrical damage to theconnectors or components insideAny modification to the LPWAN module will void any warranty16

Compliance InformationCertificationBelow is a list of approved regions with links to certification for viewing.ApprovalCountryCEHardware FrequencyStatusFrequency PlanEuropean Economic AreaTBAEU 868UKCAUnited KingdomTBAEU 868FCCUnited States of AmericaTBAUS 915RCMAustralia & New ZealandTBAAU 915Certification CodesCertificationCodeFCCTBAISEDTBARoHSAll our Nebra concentrator modules have been tested under the EU RoHSDirective 2011/65/EU and its amendment directive 2015/863/EU. You can viewthe certification here -Open Source Hardware CertificationWe are proud to announce that the Nebra LoRa mPCIe Concentrator project iscertified as Open Source Hardware by the Open Source Hardware Association(OSHWA). The registration number for this project is UK000026.17

TrademarksNebra, the Nebra Logo are all trademarks of Nebra LTD t/a Pi Supply (UKCompany Number 06732600)Warranty InformationAll goods supplied by Nebra Ltd are warranted free from defects for 12 monthsfrom the date of supply. Warranty will cover hardware only and where possible wewill repair or replace if sufficient evidence is provided of a possible defect.Contact InformationUnited Kingdom, LondonEmail: sales@nebra.comAddress: Unit 4 Bells Yew Green Business Court, Bells Yew Green,East Sussex, TN3 9BJ, EnglandChange 1.112/04/22Updated infoCRv1.226/04/22Updated sensitivity level and weight informationCRv1.307/07/22Fixed Typo’sCR18

4 Specification SPECIFICATION Nebra LoRa Concentrator Frequency MHz 868, 915, 433, 470 Modulation Type ISM Band LoRa LoRa Chipset SX1302/3 Host Interface SPI, USB Sensitivity-141dBm Maximum Tx Power 27dBm* LEDs Green (Power), Red (Tx), Blue (Rx) Form Factor Mini PCI Express Power Consumption Tx (Max) 415mA,Rx 40mA, standby 7 5mA Antenna Connector uFl Operating Temperature-40 C to 85 C