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Ebyte E90-DTU User Manual
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Ebyte E90-DTU User Manual

Ebyte E90-DTU User Manual

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E90-DTU(400SL22)

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Summary of Contents for Ebyte E90-DTU

  • Page 1 E90-DTU(400SL22)

  • Page 2: Brief Introduction

    Introduction 1.1. Brief introduction E90-DTU (400SL22) is a data transceiver with military-grade LoRa modulation technology. With multiple transmission modes, it works in the (410.125~493.125MHz) frequency band (Default 433.125MHz). The transceiver provides transparent RS232/RS485 interface and supports 8~. 28V voltage input. LoRa direct-sequence spread spectrum technology will bring longer communication distances, and has the advantages of concentrated power density and strong anti-interference ability.
  • Page 3 Ultra-low power consumption, the standby current is only 10mA (lower than power consumption in power-saving mode and sleep mode), and the transmitting With built-in watchdog and precise time layout, once an exception occurs, the transceiver will automatically restart, and continue to work according to the previous parameters. Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 4: Quick Start

    The user can select the crimping method or the power adapter to supply power according to the requirements. Connect the DTU to computer via USB to RS-232 or USB to RS-485 converter etc. Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 5 If customer needs to modify the parameters, please dial the switch in the configuration mode and connect to the computer. Open the E90-DTU SL configuration software, you can modify the relevant parameters. After completing the configuration, you must restore the DIP switch status for communication.
  • Page 6 RXD-LED Receive LED Yellow, blinks when receiving data DC power interface Power interface In-line round hole, outer diameter 5.5mm, diameter 2.5mm DIP switch DIP switch Controlled by working mode Antenna interface SMA-K interface Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 7 Chengdu Ebyte Electronic Technology Co., Ltd. E90-DTU(400SL22)User Manual 3.2. Dimensions Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 8: Interface Definition

    ; Also users can choose the VCC and GND terminal power supply from , both are optional 8 ~ 28V DC power supply, it is recommended to use 12V or 24V DC power supply for E90-DTU. 4.2. RS232 The E90-DTU can be connected to the device via RS-232 using the standard DB-9 interface.

  • Page 9: Technical Specification

    Note: In the same area when multiple data transceivers are communicating one to one at the same time , it is recommended to set the channel spacing between each group of data transceivers at 2MHz or more. Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 10: Transmitting Power

    1. When the receiving data is more than a single packet capacity, the beyond part will be automatically assigned to the second transmission until it is completed; 2. The data transceiver can not receive data which is more than the buffer capacity; Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 11: Function Description

    Chengdu Ebyte Electronic Technology Co., Ltd. E90-DTU(400SL22)User Manual 6. Function Description 6.1. Fixed Transmission Broadcast Transmission Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 12: Broadcast Address

    Users access the register through the serial port to control the Configuration Mode 2 working state of the device. The DTU can be configured through Mode the configuration software on computer. Mode 3 Sleep Mode DTU is in sleep mode. Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 13 When entering other modes from the sleep mode, the parameters will be reconfigured. During the configuration process, AUX Note remains low level; After the configuration, it outputs high level, it is recommended that users detect the rising edge T_BUSY. Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 14: Command Format

    Example 2 set module address 0x1234 , network address(0x00), UART(9600 8N1), air data rate(1.2K) Transmit CF CF C0 00 04 12 34 00 61 Return CF CF C1 00 04 12 34 00 61 Format error Reply: FF FF FF Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 15 Command format: C0 C1 C2 C3 + starting address + read length Returns: C1 + address address + read length + read valid value E.g: send C0 C1 C2 C3 00 01 Return C1 00 01 rssi ----------------------------------------------- ------------------------------------- Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 16 The module will internally use these two key low byte Default 0 Write CRYPT_L bytes as a calculation factor to transform and encrypt the over-the-air wireless signal. 80H~ Read 7 bytes of product information product information: 7 bytes only Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 17 Two-way repeater As shown in the figure: the data sent by node 1, the nodes 2, 4 can receive the data sent by node 2, 4, and node 1 can also receive Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 18 E90-DTU(400SL22)User Manual 10. Configuration instructions on computer The following figure shows the E90-DTU SL configuration interface on computer, users can switch to the command mode through M0M1, and quickly configure and read the parameters on computer. In the configuration on computer, the module address, frequency channel, network ID, and key are all in decimal mode. The range of values of each parameter is: Network address: 0-65535 ;...

  • Page 19: Programming The Modem

    Programming via the configuration software is available only in this mode 1. When programming, please check whether the device is in correct operating mode as shown above. 2. Users can modify parameters via E90-DTU SL configuration software. Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 20 Chengdu Ebyte Electronic Technology Co., Ltd. E90-DTU(400SL22)User Manual 11.2. Connection diagram in test and practical application Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 21 Low frequency narrow band for complex environment E90-DTU(230N27) 230M RS485 RS232 Low frequency narrow band for complex environment E90-DTU(230N33) 230M RS485 Low frequency narrow band for complex environment RS232 E90-DTU(230N37) 230M RS485 strong diffraction ability Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.

  • Page 22: Application Field

    2 meters to avoid injury and cut. Do not touch the antenna while launching. Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.
  • Page 23 10. Wireless communication products need to be connected with an impedance matching antenna to work properly, even for short-term testing. 15. About us Technical support: support@cdebyte.com Documents and RF Setting download link: www.ebyte.com/en/ Tel +86-28-61399028 Fax 028-64146160 www.ebyte.com/en/ Address Innovation Center B333-D347, 4# XI-XIN Road, Chengdu, Sichuan, China Copyright©2012 2019,Chengdu Ebyte Electronic Technology Co., Ltd.

This manual is also suitable for:

400sl22