Ebyte E800-DTU V8 Series Manual de usuario

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E800-DTU(433Lxx-485)-V8

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

Contents

1. Product Overview .......................................................................................................................................................1

1.1. Brief introduction............................................................................................................................................1

1.2. Features........................................................................................................................................................... 1

2. Quick start .................................................................................................................................................................. 2

3. Installation Dimension............................................................................................................................................... 4

3.1. Pin description.................................................................................................................................................4

3.2. Dimension....................................................................................................................................................... 5

4. Interface definition ..................................................................................................................................................... 6

4.1. Power supply...................................................................................................................................................6

4.2. RS485 interface ...............................................................................................................................................6

5. Technical indicator ..................................................................................................................................................... 7

5.1. Model specification.........................................................................................................................................7

5.2. General specification parameters ....................................................................................................................7

5.3. Frequency range and channels ........................................................................................................................ 7

5.4. Transmit power level.......................................................................................................................................8

5.5. Air data rate ..................................................................................................................................................... 8

5.6. Current parameter............................................................................................................................................8

5.7. Transceiver Length and Sub-packing Mode ................................................................................................... 8

6. Operating mode..........................................................................................................................................................9

7. Connection diagram when programming ...................................................................................................................9

7.1. Parameter setting details............................................................................................................................... 10

8. Connection diagram in test and practical application............................................................. 错误！未定义书签。

9. Related products .......................................................................................................................................................11

10. Practical application Fields .................................................................................................................................... 11

11. Precautions for Use ................................................................................................................................................ 13

Revision History ...........................................................................................................................................................14

About us ........................................................................................................................................................................14

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

Disclaimer

EBYTE reserves all rights to this document and the information contained herein.

Products, names, logos and designs described herein may in whole or in part be

subject to intellectual property rights. Reproduction, use, modification or disclosure to

third parties of this document or any part thereof without the express permission of

EBYTE is strictly prohibited.

The information contained herein is provided “as is” and EBYTE assumes no

liability for the use of the information. No warranty, either express or implied, is given,

including but not limited, with respect to the accuracy, correctness, reliability and

fitness for a particular purpose of the information. This document may be revised by

EBYTE at any time. For most recent documents, visit www.cdebyte.com.

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

1. Product Overview

1.1. Brief introduction

E800-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. Features

Transmission power is optional, all technical indicators have met the European industry standards.

Use temperature compensation circuit, the frequency stability is better than ±2PPM.

With operating temperature range: -40 ℃ ~ +85 ℃, 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 20mA (the power consumption of power saving mode and

sleep mode is lower), the transmitting current ≤ 350A (1W).

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.

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.

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

2. Quick start

We need devices below,

Step 1: First install the antenna for the data transmission, then turn on the power, and connect the USB to serial cable (USB to

RS485);

Step 2: Use USB to RS-232,USB to RS-485 or other methods to connect the computer to the digital radio;

Step 3: Start two serial port debugging assistants, select the serial port baud rate as 9600bps and the verification method as 8N1, then

the serial port transparent transmission can be realized;

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

Step 4: If the customer needs to switch the working mode, it can be controlled by the Mode button to switch between different

working modes (M0 indicator light, M1 indicator light). Press and hold the Mode button for 1 second and then release it to

switch the mode once. The details of the mode switch are shown in the following table:

Categories

Description

Mode 0

Normal Mode

OFF

Open UART and RF，transparent transmission is on

( factory default )

Mode 1

Wake-up

Mode

OFF

Transmitting WOR mode, the packet comes with a

preamble code

Mode 2

Power-saving

Mode

OFF

Receiving WOR mode, saving receive power, the mode

can not be transmitted

Mode 3

Sleep Mode

Parameter setting using the configuration software

Note: The DTU has the function of power-down saving mode (the factory default setting is transparent transmission

mode), the user needs to switch the corresponding mode according to the M1 and M0 indicators (effective

immediately).

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

3. Installation Dimension

3.1. Pin description

NO.

Name

Function

Description

3.81mm terminal

block

UART interface/

Power supply

interface

Standard RS-232&485 interface/

Screwing power supply interface

PWR-LED

Power LED

Red, lit when the power is on

TXD-LED

Transmit LED

Yellow, blinks when sending data

RXD-LED

Receive LED

Yellow, blinks when sending data

M0-LED

Mode LED

Red,M0 M1 indicate the Operating mode

together

M1-LED

Mode LED

Red,M0 M1 indicate the Operating mode

together

Mode switch

Tact switch

Control the Operating mode

Antenna interface

SMA-K interface

External thread, 10mm, 50Ωcharacteristic

impedance

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

3.2. Dimension

Unit: mm

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

4. Interface definition

4.1. Power supply

Users can choose ①the VCC and GND terminal power supply, E800-DTU can use 8~ 28V DC power supply,

but it is recommended to use 12V or 24V DC power supply.

4.2. RS485 interface

E800-DTU can use the 485_A terminal and the 485_B terminal in ②to connect the A terminal and the B terminal of the RS-485

of the device respectively.

Pin NO.

Definition

Function

Description

VCC

Screwing power interface,

positive

8 ~ 28V DC, 12V or 24V( recommended )

GND

Screwing power interface,

negative

The power supply negative pole is connected to

the system ground and the housing

GNDA

RS232 common terminal

Connected to RS 232 device GND

B/TXD

Serial port terminal

RS-485: Connected to RS 485 device interface

RS-232: Output terminal,connected to RS 232

device RXD

A/RXD

Serial port terminal

RS-485: Connected to RS 485 device interface

RS-232: Input terminal, connected to RS 232

device TXD

Note: The DTU will be in poor communication when connecting multiple devices , while connecting a single

Chengdu Ebyte Electronic Technology Co.,Ltd E800-DTU(433Lxx-485)-V8 UserManual

device is not, please try to parallel connect a 120Ω resistor between 485_A terminal and 485_B terminal.

5. Technical indicator

5.1. Model specification

Model

Frequency

TX power

Distance

Feature

Application

E800-DTU(433LX

X-485)-V8

433M

LoRa

anti-interfer

ence

To the environment with

small data, far distance

★Note: Test condition: in clear and open air without shelters, 12V /1A power supply, 5dBi gain sucker antenna

over 2 meters height from the ground, with the factory default parameters.

5.2. General specification parameters

NO.

Parameter

Specification

Description

Size

82*62*25mm

Weight

79g

+/- 4.5g

Operating

temperature

-40℃～+85℃

For industrial application

Antenna

impedance

50Ω

Standard 50 Ω characteristic impedance

Supply voltage

10～28V DC

It is recommended to use 12V or 24V

Communication

interface

RS485

Standard DB9 hole / 3.81 terminal block

Baud rate

Default 9600

1200 to 115200 bps

Address

Default 0

65536 configurable addresses

5.3. Frequency range and channels

Model

Frequency

Band range

Channel gap

Channel numbers

E800-DTU(433LX

X-485)-V8

433M

410～441M

32，half-duplex

★Note: In the same area, multiple groups of DTU are used for one-to-one communication at the same time. It is recommended that

each group of devices should be set with a channel interval of more than 2MHz.

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