Ebyte E32-DTU-V8 Bedienungsanleitung

Chengdu Ebyte Electronic Technology Co.Ltd. E32-DTU(433L33)-V8 User Manual

E32-DTU(433L33)-V8

Chengdu Ebyte Electronic Technology Co., Ltd. E32-DTU(433L33)-V8 User Manual

CONTENTS

1. Introduction ................................................................................................................................................................ 3

1.1 Brief introduction............................................................................................................................................. 3

1.2 Features .............................................................................................................................................................3

2 Quick start....................................................................................................................................................................3

3 Dimensions .................................................................................................................................................................. 6

3.1 Parts description............................................................................................................................................... 6

3.2 Dimensions.......................................................................................................................................................6

4 Interface definition...................................................................................................................................................... 8

4.1 Power interface.................................................................................................................................................8

4.2 RS232............................................................................................................................................................... 8

4.3 RS485............................................................................................................................................................... 8

5 Technical specification................................................................................................................................................ 9

5.1 Model specification .......................................................................................................................................... 9

5.2 General specification parameter.......................................................................................................................9

5.3 Frequency and channel numbers......................................................................................................................9

5.4 Transmitting power.........................................................................................................................................10

5.5 Air data rate .................................................................................................................................................... 10

5.6 Current ............................................................................................................................................................10

5.7 TX and RX FIFO and sub-packing method...................................................................................................10

6 Operating mode......................................................................................................................................................... 10

7 Programming the modem .......................................................................................................................................... 12

7.1 Connection diagram ....................................................................................................................................... 12

7.2 Software for parameter setting .......................................................................................................................13

9 Related series products..............................................................................................................................................14

10 Application field ...................................................................................................................................................... 14

11 Application notes ..................................................................................................................................................... 15

About us ........................................................................................................................................................................16

Chengdu Ebyte Electronic Technology Co.Ltd. E32-DTU(433L33)-V8 User Manual

1. Introduction

1.1 Brief introduction

E32-DTU(433L33)-V8 is a wireless modem that adopts military-grade LoRa modulation technology. Due to its

advanced modulation method, the communication distance and stability are greatly improved. On the basis of the original

built-in power amplifier (PA) and low noise amplifier (LNA), the maximum transmit power reaches 2W and the

receiving sensitivity is also improved to a certain extent. Noise amplifier products have been greatly improved. The

difference is analog FM radio plus MODEM analog modem, which provides transparent RS232/RS485 interface,

working in 433MHz with communication distance up to 12km.

As a communication medium, it has a certain scope of application such as optical fiber, microwave and open wire: it

provides real-time and reliable data transmission of monitoring signals in private networks under certain special

conditions, with low cost, installation and maintenance. It features convenience, strong diffraction ability, flexible

network structure, and long coverage. It is suitable for occasions such as many and scattered points and complex

geographical environment. It can be connected with PLC, RTU, rain gauge, liquid level gauge and other data terminals.

1.2 Features

★Adopts military-grade LoRa modulation technology, greatly improves the communication distance and stability;

★Simple and high-efficiency power supply design, power adapter or screwing method available, 8~28V power supply;

★The transmit power is up to 2W, adjustable in multiple levels, and all technical indicators meet European industrial

standards;

★Adopts temperature compensation circuit, the frequency stability is better than ±1.5PPM;

★Working temperature range: -40℃～+85℃, suitable for various harsh working environments, real industrial grade

products;

★All aluminum alloy shell, compact size, easy installation, good heat dissipation; perfect shielding design, good

electromagnetic compatibility, strong anti-interference ability;

★Multiple protection functions such as power reverse connection protection, over-connection protection, antenna

surge protection, etc., greatly increase the reliability;

★Powerful software functions, all parameters can be set by programming: such as power, frequency, air rate, address

ID, etc.;

★Built-in watchdog with precise time layout. Once an exception occurs, the module will automatically restart and

continue to work according to the previous parameters.

2 Quick start

You will prepare items below

Chengdu Ebyte Electronic Technology Co., Ltd. E32-DTU(433L33)-V8 User Manual

1. First install the antenna for the data transmission, then install the power supply, and ensure that the DIP switch is in the

correct state. The user can choose the screwing method or the power adapter to supply power according to their needs;

2 Use USB to RS-232, USB to RS-485 or other methods to connect computer with modem；

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. E32-DTU(433L33)-V8 User Manual

4 If the customer needs to modify the parameters, please set dip switch in the configuration mode and connect it to the

computer. Open the E90-DTU configuration software to modify the relevant parameters. After the configuration is

completed, the dip switch state must be restored before communication can be carried out.

Mode 0 Factory default mode Mode 3 Parameter configuration

Chengdu Ebyte Electronic Technology Co.Ltd. E32-DTU(433L33)-V8 User Manual

3Dimensions

3.1 Parts description

Name

Function

Remarks

DB-9 female socket

RS232

Standard RS232 interface

3.81 Terminals

RS485, power

supply

Standard RS485 interface and screwing power

interface

PWR-LED

Power Indicator

Red, lights up when the power is on

TXD-LED

TX indicator

Yellow, flashes when sending data

RXD-LED

RX indicator

Yellow, blinks when receiving data

DC power interface

Power interface

DIP round hole, outer diameter 5.5mm, inner

diameter 2.5mm

DIP switch

Work mode control

Antenna interface

SMA-K

External thread inner hole, length 10mm,

characteristic impedance 50Ω

3.2 Dimensions

Chengdu Ebyte Electronic Technology Co., Ltd. E32-DTU(433L33)-V8 User Manual

单位：mm

Chengdu Ebyte Electronic Technology Co., Ltd. E32-DTU(433L33)-V8 User Manual

4Interface definition

4.1 Power interface

Users can choose ⑥DC power interface,using the power adapter supply with the interface of the 5.5mm outer

diameter , 2.5mm diameter ;

Also users can choose the VCC and GND terminal power supply from ②, both are optional；

8 ~ 28V DC power supply, it is recommended to use 12V or 24V DC power supply for E32-DTU.

4.2 RS232

The E32-DTU can be connected to the device via RS-232 using the standard DB-9 interface.

4.3 RS485

E32-DTU can be connected to the 485_A terminal and 485_B terminal from ②with the RS-485 A terminal

and B terminal of other device respectively.

Pin NO.

Definition

Function

Description

VCC

Crimping power interface,

positive

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

GND

Crimping power interface,

negative

The power supply negative pole is connected to

the system ground and the housing

Chengdu Ebyte Electronic Technology Co., Ltd. E32-DTU(433L33)-V8 User Manual

485_B

RS-485 interface, interface B

The RS-485 interface B is connected to the

device interface B

485_A

RS-485 interface, interface A

The RS-485 interface A is connected to the

device interface A

Note: The transceiver will be in poor communication when connected to multiple devices , it is recommended to be

connected to a single device, please try to use parallel 120Ω resistor between 485_A terminal and 485_B.

5Technical specification

5.1 Model specification

Model No.

Frequency

TX power

Distance

Features

Recommended application

E32-DTU(433L33

)-V8

433M

LoRa，

anti-interference

Suitable for small data and long-distance

application environment

Note: Test condition: in clear and open air without shelters, 12V /2A power supply, 5dBi gain sucker antenna over 2

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

5.2 General specification parameter

No.

Item

Value

Note

Size

82*62*25mm

See more in 3.2. Dimensions

Weight

150g

Difference is within 5g

Temperature

-40℃～+85℃

Meet industrial request

Antenna

impedance

50Ω

Standard 50 Ω characteristic impedance

Supply voltage

8～28V DC

It is recommended to use 12V or 24V

Communicatio

n interface

RS232/RS485

Standard DB9 hole / 3.81 terminal block

Baud rate

Factory default 9600

From 1200~115200

Address code

Factory default 0

65536 configurable address

5.3 Frequency and channel numbers

Model No.

Default Frequency

Frequency Range

Channel

Interval

Channel numbers

Chengdu Ebyte Electronic Technology Co., Ltd. E32-DTU(433L33)-V8 User Manual

E32-DTU(433L33

)-V8

433M

410～441M

32，half duplex

★Note: In the same area when multiple data transceivers are communicating one to one at the same time , it is

recommended to set the channel spacing between each group of data transceivers at 2MHz or more.

5.4 Transmitting power

Model No.

500mW

250mW

E32-DTU(433L33)-V8

Factory default

√

★Note: The lower the transmit power, the closer the transmission distance, but the working current won’t be

declined in exact proportion , it is recommended to use the maximum transmit power.

5.5 Air data rate

Model

Default

Levels

Air data rate (bps)

bps

E32-DTU(433L33)-V8

2.4k

2.4k、4.8k、9.6k、19.2k

★Note: The higher the air data rate, the faster the transmission rate, the transmission distance is also closer; when

the rate meets the requirements , the lower air data rate, the better quality.

5.6 Current

Model

TX current mA

Standby current mA

12V

28V

12V

28V

E32-DTU(433L33)-V8

502

260

★Note: It is recommended to retain more than 50% of the current margin when selecting the power supply,

which will help the data transceiver to work steadily for a long time.

5.7 TX and RX FIFO and sub-packing method

Model No.

Buffer

Sub-packing method

E32-DTU(433L33)-V8

512 byte

Automatically send 58 bytes per packet

★Note: 1. If the data received by the radio station at a time is larger than the capacity of a single packet, the excess data

will be automatically allocated to the second transmission until the transmission is completed;

2. The data received by the radio at a time cannot be larger than the buffer capacity;

6 Operating mode

There are four operating modes, if low power consumption is not required, for normal communication it is

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