Ebyte E90-DTU(400SL47), Manual

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Chengdu Ebyte Electronic Technology Co., Ltd E90-DTU(400SL47) User Manual
Copyright ©2012-2023, Chengdu Ebyte Electronic Technology Co., Ltd 9
4.3 RS485 Interface Definition
The E90-DTU can use RS485 interfaces A, B, and G to connect to RS485's A, B, and G of the device respectively.
Note: Poor communication occurs when connecting the radio to multiple devices, but not with a single device, try
connecting a 120
Ω
matching resistor in parallel between the 485_A terminal and the 485_B terminal.
5 Technical indicators
5.1 Model Specifications
Model Specification
operating
frequency firin
g power
refe
rence
distance
Specification
Characteristics
Recommended Scenarios
Hz W km
E90-DTU(400SL47) 433.125M 50 70
LoRa spread
spectrum
anti-interference
Suitable for long distances and
interference-prone environments
Note: Sunny weather, open environment without obstruction, 12V/10A power supply, 5dBi suction cup antenna,
antenna height of 2 meters from the ground, using factory default parameters.
5.2 General specification parameters
serial
number
sports
event
norm clarification
1
Product
Size
160*137*44mm See mounting dimensions for details
2
Product
weight
846.2g Weight tolerance 4.5g
3
operating
temperature
-40
℃～
+85
℃
Meets the demands of industrial-grade use
4
Antenna
Impedance
50
Ω
Standard 50
Ω
characteristic impedance
5
voltage
range
12V DC
Recommended to support instantaneous current
10A
6
communica
tion interface
RS232/RS485 Standard DB9 hole type/5.08 terminal block