Ebyte E90-DTU User Instruction Manual

EBYTE Wireless Data Transceiver

E90-DTU

User Instruction Manual

This manual may change with the continuous improvement of the product. Please refer to the latest version of the instruction.

Chengdu Ebyte Electronic Technology Co., Ltd. reserves all rights of final interpretation and modification of this manual.

1.Introduction

1.1 Brief introduction

E90-DTU is a wireless data transceiver with the function of digital data processing, digital modulation and

demodulation, FEC, balanced soft decision, etc.. Wireless data transceiver provides transparent RS232 / RS485 interface,

different with the analog FM transceiver plus MODEM analog digital transceiver.

Wireless data transceiver working as a communication medium,as well as the fiber, microwave, the same line, has a

certain scope of application: it provides some special conditions in the private network monitoring signal real-time, reliable

data transmission,with the features of low cost, convenient installation and maintenance , diffraction ability, flexible
network structure, range of coverage,suitable for the occasion of dot and scatter ，complex geographical environment ,

connecting with PLC, RTU, rain gauge, level gauge and other data terminals.

1.2 Certificate

E90-DTU has been issued the "Wireless Transmission Equipment Model Approval Certificate"by the Ministry of

Information Industry of China , the approval code: CMIIT ID: 2017FP5780.

E90-DTU has been issued the "Design Patent Certificate" by the State Intellectual Property Office of China, the patent

number: ZL 2016 3 0501980.3.

E90-DTU has been issued the"Utility Model Patent Certificate"by the State Intellectual Property Office of China, the

patent number: ZL 2016 2 1410691.3.

1.3 Features

 All the core components are imported originally , compared with the current imports of digital transceiver , we are

the most advanced, most cost effective and the smallest one.

 Transmission power is optional：0.5 ~ 5W, all technical indicators have met the European industry standards.

 Use temperature compensation circuit, the frequency stability is better than±1.5PPM.

 With operating temperature range: -40℃~ +70℃, adapting to a variety of harsh working environment.
 All with aluminum alloy shell, compact, easy installation, good heat dissipation; perfect shielding design, good

electromagnetic compatibility and strong anti-interference ability.

 Power reverse protection, over-protection, antenna surge protection and other multiple protection functions,

greatly increase the reliability of the transceiver.

 Powerful software features, all parameters can be programmed to set: such as power, frequency, air data rate,

address ID, etc.

 Ultra-low power consumption, standby current is 50mA (the power consumption of power saving mode and sleep

mode is lower), the transmitting current≤1.2A (5W).

 With watchdog and accurate time layout, in the event of an exception, the module will automatically restart and

continue to follow the previous parameters to operate.

2.Dimension

2.1 Pin description

Pin NO.

Name

Function

Description

1

DB-9 female socket

RS-232 interface

Standard RS-232 interface

2

3.81 terminal block

RS-485, 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 sending 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

SMA-K interface

external thread, 10mm, 50

Ω

characteristic impedance

2.2 Type A dimension（L433-37, N230-37, C433-37）

★Note: Type A is the 5W power specification model, including the following models:L433-37, N230-37, C433-37