User Manual for WisGate RAK7248 Version1.3| September 2020 www.RAKwireless.com Visit our website for more document.
RAK7248 Table of Contents 1. Overview .................................................................................................................................... 3 1.1. Introduction....................................................................................................................... 3 1.2. Main Features ................................................................................................................... 4 1.3. Package Contents ...................................
RAK7248 7. Document Summary ............................................................................................................... 14 1. Overview RA K20 11 1.1. Introduction The RAK7248 WisGate is a device that consists of Raspberry Pi 4 Model B, RAK2287 which includes a GPS module and a Heat Sink for better performance and thermal heat dissipation management. And it’s housing is built with an aluminum casing.
RAK7248 1.2. Main Features Computing with Raspberry Pi4 Model B(Linux). 64-bit SX1302 base band processor, 500 kHz LoRa reception with 8 RA K20 11 x 8 channels LoRa® packet detectors,8 x SF5-SF12 LoRa® demodulators,8 x SF5-SF10 LoRa® demodulators. Built-in the GPSModule. Built-in Heat Sink for thermal heat dissipationmanagement. Supports 5V/3A powersupply. RX sensitivity down to -139dBm@SF12, BW500KHz.
RAK7248 RA K20 11 2. WisGate RAK7248 2.1. Overview The shell of RAK7248 is made of metal The outer dimension of WisGate is 92 x 68.3 x 57.2 mm as shown below. 5 Figure 3 | Outer Dimensions 2.2.
RAK7248 RA K20 11 Figure 4 | Interfaces 2.3. SystemStructure The following figure shows the basic concept for LoRaWAN system. RAK7248 WisGate is the central hardware solution for all LoRa based radio communication. It receives and transmits radio messages. The processing of radio messages as well as the protocol related tasks is done by embedded host system (Raspberry Pi). Received and processed radio messages are being sent to a LoRaWAN server.
RAK7248 2.5. LoRa Operating Frequencies The WisGate supports all LoRaWAN frequency bands as below. Which is easy to configure while building the firmware from the source code. Region Frequency Europe EU433,EU868 China CN470 North American US915 Asia AS923,AS920 Australia AU915 Korea KR920 Indian IN865 RA K20 11 Table 1 | LoRa Operating Frequencies 2.6.
RAK7248 2.8. Environmental Requirements The table below lists the operation and storage temperature requirements: Parameter Min. Typical Max. Operation Temperature Range -20 ºC +25 ºC +65 ºC Extended Temperature Range -40 ˚C +85 ˚C Storage Temperature Range -40 ˚C +85 ˚C RA K20 11 Table 3| Environment Requirements 2.9. LoRa RF Characteristics 2.9.1 Transmitter RF Characteristics The RAK2287 has an excellent transmitter performance.
RAK7248 RA K20 11 Figure 6 | LoRa Antenna Overview 3.1.2Antenna Dimension The antenna's mechanical dimension is shown below: Figure 7 | LoRa Antenna Dimension 3.1.
RAK7248 RA K20 11 Table 6| LoRa Antenna Parameter 3.2. GPS Antenna 3.2.1Overview The GPS antenna for WisGate is shown below. 10 Figure 8 | GPS Antenna 3.2.2GPS Antenna Dimensions Figure 9 | GPS Antenna Dimensions 3.2.
RAK7248 Conditions Temperature Humidity Working -35 ºC ~ +80 ºC 0% ~ 95% Storage -40 ºC ~ +85 ºC 0% ~ 95% RA K20 11 Table 7| GPS Environmental Requirements 3.2.4GPS Antenna Parameter Antenna specifications are listed in the table below: Item Specifications PET Range of Receiving Frequency 1575.42±1.1 ±2.5 Center Frequency (MHz) w/ 30mm2 GND plane 1575.42 ±3.0 Bandwidth (MHz) (Return Loss ≤ -10dB) ≥10 ±0.5 VSWR (in Center Frequency) ≤2.0 ±0.5 Gain (Zenith) (dBi Typ.
RAK7248 2. Low temperature test: soap in temperature (-40º C) chamber for 24-hour and return to normal temperature (at least for 1-hour) without visual shapechange. Table 10| Environmental Test Performance 4. FCCCaution RA K20 11 FCC Caution: Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This device complies with part 15 of the FCC Rules.
RAK7248 this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. RA K20 11 Le présent appareil est conforme aux CNR d' Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence.
RAK7248 7. Document Summary Checked by: Ziwei Penn RA K20 11 Approved by: Revision History Prepared by 14 About RAKwireless: RAKwireless is a pioneer in providing innovative and diverse Cellular and LoRaWAN connectivity solutions for both Edge and Gateway IoT devices. We believe that through easy to use and modular designs we can accelerate the time to market for various IoT Applications in order to optimize system deployment in both Developer and Commercial settings.
