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Chengdu Ebyte Electronic Technology Co.,Ltd.

E32-DTU (433L20) user manual

Copyright ©2012–2021,

Chengdu Ebyte Electronic Technology Co,;Ltd

15

E32-DTU (433L30)

RS232 RS485

433M

30

8

LoRa spread spectrum, long
distance, anti - interference

E32-DTU (433L27)

RS232 RS485

433M

27

5

LoRa spread spectrum, long
distance, anti - interference

E32-DTU (433L20)

RS232 RS485

433M

20

3

LoRa spread spectrum, long
distance, anti - interference

10. Practical application

The data transceiver of CDEBYTE is applied for all kinds of point to point, one point to multiple points wireless

data transmission system, such as smart home, Internet of things transformation, power load monitoring, distribution
network automation, hydrological and hydrological forecasting, water pipe network monitoring, urban street lamps
Monitoring, air defense alarm control, railway signal monitoring, centralized control of railway water supply, oil supply
pipe network monitoring, GPS system, remote meter reading, electronic crane, automatic reporting, seismic forecasting,
fire prevention, environmental monitoring and other industrial automation system, as shown below:

11. Note

1. Please keep the warranty card of the equipment which includes the factory number (and important technical

parameters) and is important for user's future maintenance and new equipment.

2. Transceiver during the warranty period, if the quality of the product itself rather than man-made damage or

Summary of Contents for 433L20

Page 1: ...E32 DTU 433L20 ...

Page 2: ...e definition 8 4 3 RS485 Interface definition 8 5 Technical indicators 9 5 1 Model specifications 9 5 2 General specification parameters 9 5 3 Frequency range and channels 10 5 4 Transmit power level 10 5 5 Air data rate 10 5 6 Current parameters 10 5 7 Transceiver Length and Sub packing Mode 11 6 Operating mode 11 7 Connection diagram when programming 12 7 1 diagrammatic drawing 12 7 2 Parameter ...

Page 3: ...es randomness the rigorous algorism makes data interception meaningless The data compression function has possibility to reduce the data transmission time which in turn reduces the possibility of being interfered thus improves the reliability and communication efficiency 1 2 Features All core components are originally imported our transceiver modems have much advanced functions with smaller size a...

Page 4: ...lectronic Technology Co Ltd 3 2 Operation Main parts 1 First step is to mount antenna then battery making sure the dial switch is on its right status User gets on the power by choosing either VCC GND or power adapter 2 Using USB RS232 converter or USB RS 485 converter or other way to link computer and DTU ...

Page 5: ...setting which serial port transmission can be achieved 4 User needs to open the mode switch first before link DTU with computer if the user want to modify parameters Firing up E32 DTU 数 传 电 台 配 置 软 件 E32 DTU parameter configuration application to modify related parameters The mode switch must be reopened to achieve transmission after the configuration Mode 0 Default Mode 3 Parameter setting ...

Page 6: ...Chengdu Ebyte Electronic Technology Co Ltd E32 DTU 433L20 user manual Copyright 2012 2021 Chengdu Ebyte Electronic Technology Co Ltd 5 3 Installation Specifications 3 1 Structure ...

Page 7: ...power interface Standard RS 485 interface and pressure line power interface 3 PWR LED Power LED Red lit when the power is on 4 TXD LED Transmit LED Yellow blinks when sending data 5 RXD LED Receive LED Yellow blinks when receiving data 6 DC power interface Power interface In line round hole outer diameter 5 5mm diameter 2 5mm 7 DIP switch DIP switch Controlled by working mode 8 Antenna interface S...

Page 8: ...Chengdu Ebyte Electronic Technology Co Ltd E32 DTU 433L20 user manual Copyright 2012 2021 Chengdu Ebyte Electronic Technology Co Ltd 7 3 2 Dimension Unit mm ...

Page 9: ...pply but it is recommended to use 12V or 24V DC power supply 4 2 RS232 Interface definition The E32 DTU can be connected to the device via RS 232 using the standard DB 9 interface 4 3 RS485 Interface definition E32 DTU can connect the 485_A terminal and 485_B terminal with the device RS 485 A terminal and B terminal Pin NO Definition Function Description 1 VCC Crimping power interface positive 8 2...

Page 10: ...20 433 0 1 3 Strong penetration anti interference To the environment with small data long distance many obstacles Note Test condition in clear and open air without shelters 12V 2A power supply 5dBi gain sucker antenna over 2 meters height from the ground with the factory default parameters 5 2 General specification parameters NO Model Specification Description 1 Size H W D 82 62 25 mm See more at ...

Page 11: ... more 5 4 Transmit power level Model 10mW 25mW 50mW 100mW E32 DTU 433L20 Note The lower the transmit power the closer the transmission distance but the working current won t be declined in exact proportion it is recommended to use the maximum transmit power 5 5 Air data rate Model Default air data rate Levels Air data rate bps bps bps E32 DTU 433L20 2 4 6 0 3 1 2 2 4 4 8 9 6 19 2 Note The higher t...

Page 12: ...data transceiver can not receive data which is more than the buffer capacity 6 Operating mode E32 DTU 170L30 has four operating modes if low power consumption is not required normal communication is recommended to configure the data transceiver for the normal mode mode 0 The factory default is normal mode mode 0 Categories M1 M0 Description Mode 0 Normal Mode ON ON Open UART and RF transparent tra...

Page 13: ...agrammatic drawing Mode M1 M0 Description Mode 3 Sleep Mode Off Off Only be programmed using the configuration software in the current mode Note 1 programming can only be carried on in a specific mode see above if fails please confirm the work mode 2 If there s no complicated programming opening the E32 DTU 数传电台配置软件 E32 DTU parameter configuration application to modify parameters ...

Page 14: ...required current will be reduced FEC The lost or interfered data can be partially corrected by complex encoding which can improve the equivalent receiving sensitivity by about 3dBm Turning off this function can reduce the communication delay Transmission mode Transparent transmission and send as received fixed points data is sent at fixed points according to the format Wake Up Time There is no dir...

Page 15: ...ed to be 2 5MHz 8 Connection diagram in test and application 9 E32 DTU series Mode No Interface Frequency Hz Tx power dBm Distance km Function feature E32 DTU 433L37 RS232 RS485 433M 37 20 LoRa spread spectrum long distance anti interference E32 DTU 868L30 RS232 RS485 868M 30 8 LoRa spread spectrum long distance anti interference E32 DTU 915L30 RS232 RS485 915M 30 8 LoRa spread spectrum long dista...

Page 16: ...t of things transformation power load monitoring distribution network automation hydrological and hydrological forecasting water pipe network monitoring urban street lamps Monitoring air defense alarm control railway signal monitoring centralized control of railway water supply oil supply pipe network monitoring GPS system remote meter reading electronic crane automatic reporting seismic forecasti...

Page 17: ...ver will be damaged easily the distance from the antenna is better than 2 meters so as to avoid harm please do not touch the antenna when transmitting 9 Wireless data transceiver has different communication distance in different environments communication distance is influenced by temperature humidity obstacle density obstacle volume and electromagnetic environment in order to ensure stable commun...

Page 18: ... 1 4 2021 1 27 Model No split LY About us Technical support support cdebyte com Documents and RF Setting download link www ebyte com Thank you for using Ebyte products Please contact us with any questions or suggestions info cdebyte com Fax 028 64146160 Web www ebyte com Address BuildingB5 MouldIndustrialPark 199 XiquAve WestHigh techZone Chengdu 611731 Sichuan China ...

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