Chengdu Ebyte Electronic Technology Co.,Ltd
E90-DTU(400SL44) User Manual
Copyright ©2012–2021
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Chengdu Ebyte Electronic Technology Co.,Ltd
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Multi-level relay networking can be realized, which effectively extends communication distance for
ultra-long-distance communication;
With temperature compensation circuit, the frequency stability is better than ±1.5PPM;
All-aluminum alloy casing, compact size, easy to install and good heat dissipation; perfect shielding design, with
good electromagnetic compatibility and strong anti-interference ability;
Powerful software functions, all parameters can be programmed: such as power, frequency, air data rate, address ID,
etc;
Temperature monitoring, antenna abnormality monitoring.
2. Quick start
You need to prepare E90-DTU(400SL44) transceiver
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Antenna
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12V/10A power supply
，
Serial cable.
Note: The distance between two high-power DTU antennas should be more than 1 meter, otherwise it may cause
damage!
1. First install the antenna for the transceiver, and then install the power supply. Only the crimping mode is supported. At
this time, the power light is on and the abnormal light has no indication;
2. Connect the DTU to computer via USB to RS-232 or USB to RS-485 converter;
3. Start two serial port debugging assistants, select the serial port baud rate 9600bps, and the verification mode 8N1, and
realize transparent transmission.
4. If customer needs to modify the parameters, please short the MOD pin to GND and enter the configuration mode.
Open the E90-DTU SL configuration software to modify the relevant parameters. After completing the configuration,
please leave the MOD pin in floating status.
