Chengdu Ebyte Electronic Technology E90 DTU User Manual

Wireless Data Transceiver

E90-DTU

User Manual

This manual may be modified based on product upgrade, please refer to the latest version.

All rights to interpret and modify this manual belong to Chengdu Ebyte Electronic Technology Co., Ltd.

Ebyte wireless data transceiver E90-DTU series user manual

1.Introduction

1.1. Brief introduction

E90-DTU series are wireless data transceivers of 868M/915MHz with standard RS232/RS485 connectors. They are half-duplex TX & RX modems with

GFSK modulation, which largely lower frequency bandwidth thus enable its strong anti-interference ability. Transparent transmission mode is available.

Voltage supply ranges from 10V to 28V, convenient for users to install and debug.

E90-DTU features FEC algorism, which enables higher coding efficiency and correction ability. The interfered data packets will be corrected proactively

upon sudden interference, which significantly improves reliability and communication distance. Without FEC, the interfered data packet will be dropped.

The transceivers feature data encryption and compression. The data transmitted in air features 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.

As a communication media, similar as optical fiber, microwave and cable, the wireless data transceiver can be applied in specific scope: it provides

real-time and reliable data transmission of specific network monitor signal under some special conditions, it features cost-efficiency, easy installation,

simple maintenance, super diffraction ability, flexible networking structure, large area covering and so on. It is suitable for multiple points under complex

environment, and it is applicable for connecting with PLC, RTU, hyetometer, level gauge and so on.

E90-DTU series strictly follow FCC, CE, CCC standards, and meet various certification requirements and can be applied all over the world.

1.2. Features

★ All core components are originally imported, our transceiver modems have much advanced functions with smaller size and lower cost.

★ TX power100mW, all technical parameters meet European industrial standards.

★ Temperature compensators are adopted to make the frequency stability better than ±1.5PPM.

★ Operation temperature range: -40℃～+85℃, applicable for various harsh environment, it is real industrial grade products.

★ Aluminum alloy case, compact size, great heat dispersion; good shielding, prime electromagnetic compatibility and strong anti-interference.

★ Power reverse & overload protection and antenna surge protection functions significantly improve the reliability.

★ Parameters can be configured by programming, such as TX power, frequency point, air data rate, address and so on.

★ Ultra-low power consumption, standby current is only 50mA (even lower under power-saving and sleep modes).

★ Embedded watch-dog and precise time layout, modem will restart automatically upon abnormal situation and work with previous parameters.

★ The transceivers adopt original Silicon Labs SI4463/SI4438/SI4464 chips, customers highly comment the products because of the super reliability.

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Ebyte wireless data transceiver E90-DTU series user manual

2. Dimension

2.1 Description

Pin NO. Name Function Description

1 DB-9 female socket RS-232

2 3.81 terminal RS-485、power interface

3 PWR-LED Power LED

4 TXD-LED Transmit LED

5 RXD-LED Receive LED

6 DC power interface Power interface

7

8

DIP switch

Antenna interface

Dip switch

SMA-K interface

Standard RS-485 interface and pressure line power interface

In-line round hole, outer diameter 5.5mm, diameter 2.5mm

external thread, 10mm, 50Ωcharacteristic impedance

Standard RS-232 interface

Red, lit when the power is on

Yellow, blinks when sending data

Yellow, blinks when sending data

Controlled by working mode

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Ebyte wireless data transceiver E90-DTU series user manual

2.2. Dimension of type A

★Note：Type A is for 2W specification，including：

E90-DTU（868M20） E90-DTU（915M20）

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