User Manual for WisLink-LoRa Concentrator Module Mini PCI-e Edition RAK2247 SPI or USB Version V1.0 | December2018 www.RAKwireless.com Visit our website for more document.
RAK2247 Table of Contents 1 Overview ...................................................................................................................................... 3 1.1 Introduction ........................................................................................................................... 3 1.2 Package Contents ................................................................................................................. 3 2 LoRa Concentrator Module RAK2247 ......................
RAK2247 1 Overview 1.1 Introduction The RAK2247 is a LoRa concentrator module with the mini PCIe form factor based on SX1301, which enables an easy integration into an existing routers and others network equipment with LoRa Gateway capabilities.It can be used in any embedded platform offering a free mini-PCIe slot with SPI or USB connection. RAK2247 is a complete and cost efficient LoRa gateway solution offering up to10 programmable parallel demodulation paths.
RAK2247 2 LoRa Concentrator Module RAK2247 2.1 Overview 4 Figure2 | Module View 2.2 Block Diagram The block diagram of RAK2247-SPI shown as below. Figure3 | RAK2247-SPI block diagram RAK2247 User Manual V1.
RAK2247 As described in Figure 3, the RAK2247 card integrates one SX1301 chip and two SX1255/7 and other chip for RF signal, which represents the core of the device, providing the related LoRa modem and processing functionallilies. Additional signal conditioning circuitry is implemented for PCI Express Mini Card compliance, and one UFL connectors are available for external antennas integration. 2.3 Operating Frequencies The board supports all LoRaWAN frequency channels as below.
RAK2247 18 GND GND 19 Reserved 1PPS GND N/A Internal connection 1PPSfor SX1301 20 W_DISABLE1# NC N/A Internally not connected GND N/A Ground Connect to ground 21 GND GND N/A Ground Connect to ground 22 PERST# RESET I RAK2247 reset input Active high(≥100ns) for SX1301 reset. 23 PERn0 NC N/A 24 3.3Vaux 3.3Vaux 25 PERp0 NC 26 GND GND GND 27 GND GND GND N/A Connect to ground 28 1.
RAK2247 52 3.3Vaux 3.3Vaux 3.3Vaux I RAK2247 supply input Connect to 3.3 V Table 2 | Pin Definition 2.5 Power Supply RAK2247 card must be supplied through the 3.3Vaux pins by a DC power supply. The voltage must be stable, because during this operation the current drawn from 3.3Vaux can vary significantly, based on the power consumption profile of the SX1301 chip (see SX1301 DS). 2.
RAK2247 2.10 Antenna RF Interface The modules have one RF interfaces over a standard UFL connectors (Hirose U. FL-R-SMT) with a characteristic impedance of 50OHM. The RF port (J1) supports both Tx and Rx, providing the antenna interface. 2.11 Electrical Characteristics Stressing the device above one or more of the ratings listed in the Absolute Maximum Rating section may cause permanent damage. These are stress ratings only.
RAK2247 2.11.2 Maximum ESD Parameter Min Typical Max Remarks ESD sensitivity for all pins except ANT1 1000V Human Body Model according to JESD22-A114 ESD sensitivity for ANT1 ESD immunity for ANT1 1000V 4000V 8000V Human Body Model according to JESD22-A114 Contact Discharge according to IEC 61000-4-2 Air Discharge according to IEC 61000-4-2 Table 4 | Maximum ESD ratings Note: RAK2247 card are Electrostatic Sensitive Devices and require special precautions when handling. 2.11.
RAK2247 2.12 Mechanical Dimensions RAK2247 card are fully compliant to the 52-pin PCI Express Full-Mini Card Type F2 form factor, with top-side and bottom-side keep-out areas, with 50.95 mm nominal length, 30 mm nominal width and all the other dimensions as defined by the PCI Express Mini Card Electromechanical Specification [9] except for the card thickness (nominal value is 3.7 mm), as described in the next figure. The weight of the RAK2247 card is about 9.7 g.
RAK2247 3 LoRa Antenna 3.1 Overview 11 Figure 5|LoRa Antenna Overview 3.2 Antenna Parameter Items Specifications VSWR(Voltage Standard Wave Radio) 1:1.5 Gain 5.8 dBi WorkingTemperature&Humidity T:-35 ºC ~ +80 ºC, H: 0% ~ 95% StorageTemperature&Humidity T:-40 ºC ~ +85 ºC, H: 0% ~ 95% Table 8| LoRa Antenna Parameter RAK2247 User Manual V1.
RAK2247 4 SchematicsReference RAK2247 card refer to Semtech's reference design of SX1301, the SPI interface or USB interface, which convert SPI to USB2.0 by FT2232H, can be used on PCIE connector. 12 RAK2247 User Manual V1.
RAK2247 5 Warning FCC Warning:This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions. (1) This device may not cause harmful interference; (2) This device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
RAK2247 Not applicable 2.5 Trace antenna designs Not applicable 2.6 RF exposure considerations To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance of 20cm from your body. 2.7 Antennas This radio transmitter FCC ID: 2AF6B-RAK2247 has been approved by Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated.
RAK2247 6 Revision History Revision Description Date 1.0 Initial version 2018-12-21 Table 9 | Revision History 7 Document Summary Document Name: WisLink-LoRa RAK2247 User Manual Release Date: December2018 Revision Number: V1.0 Prepared by Checked by: Approved by: 15 Penn Jeff RAK2247 User Manual V1.