Ebyte E34-DTU Bedienungsanleitung

E34-DTU (2G4H27)

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

Content

1.Introduction..................................................................................................................................................................2

1.1.Brief Introduction............................................................................................................................................. 2

1.2.Features.............................................................................................................................................................2

2.Operation......................................................................................................................................................................2

3.Installation Specifications............................................................................................................................................4

3.1.Structure............................................................................................................................................................4

3.2.Dimension.........................................................................................................................................................6

4.Interface Defination..................................................................................................................................................... 7

4.1.Power interface definition................................................................................................................................ 7

4.2.RS232 Interface definition................................................................................................................................7

4.3.RS485 Interface definition................................................................................................................................7

5. Technical indicators................................................................................................................................................ 8

5.1.Model specifications.........................................................................................................................................8

5.2.General specification parameters..................................................................................................................... 8

5.3.Frequency range and channels..........................................................................................................................8

5.4.Transmit power level........................................................................................................................................ 9

5.5.Current parameters............................................................................................................................................9

5.6.Transceiver Length and Sub-packing Mode.....................................................................................................9

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

7.Connection diagram when programming..................................................................................................................10

7.1.diagrammatic drawing.................................................................................................................................... 10

7.2.Parameter setting instruction.......................................................................................................................... 11

8.Connection diagram in test and application.............................................................................................................. 12

9.E32-DTU series......................................................................................................................................................... 13

10.Practical application.................................................................................................................................................13

11.Note..........................................................................................................................................................................14

12.Important statement................................................................................................................................................. 15

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

1.Introduction

1.1. Brief Introduction

E34-DTU (2G4H27) is a full duplex wireless data transmission module for point-to-point transmission( Has both

RS232 and RS485), transmission power is 500mW, transparent transmission mode, working in 2400MHz band

high-performance 2.4g wireless module, UART serial port interface, transparent transmission, at the same time support

3.3v or 5.0v system, packet loss automatic retransmission, support automatic frequency hopping, anti-interference ability

is very strong.

In order to ensure the secrecy and anti-interference of communication, compared with fixed-frequency

communication, frequency-hopping communication is more covert and difficult to be intercepted. Support address

function, host can transmit data to any address of any channel module, network relay and other applications; The air

speed is high, so the transmission speed is fast, the delay is small and the data throughput is large. It is especially suitable

for applications requiring small delay and large data volume, such as real-time remote control with good anti-interference

ability. Even if some frequency points are interfered, it can still carry out normal communication on other frequency

points that are not interfered, and it has been mass produced and widely used in related industries

1.2. Features

★All core components are originally imported; our transceiver modems have much advanced functions with smaller size

and lower cost.

★The top TX power is 500mW, 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 20.5mA (even lower under power-saving and sleep modes), TX

current ≤0.2A .

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

with previous parameters.

★The transceivers adopt original nRF24L01P+ chip, customers highly comment the products because of the super

reliability.

2. Operation

Main parts

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

1、First step is to mount antenna, then battery, making sure the dial switch is on its right status. User gets on the power

by choosing either VCC/GND or power adapter.

2、Using USB-(RS232) converter or USB-RS(485) converter or other way to link computer and DTU.

3、Firing up two XCOMs, choosing Baud rate 9600bps, 8N1, the setting which serial port transmission can be

achieved.

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

4、User needs to open the mode switch first before link DTU with computer if the user want to modify parameters.

Firing up E34-DTU 数传电台配置软件 (E34-DTU parameter configuration application) to modify related parameters.

The mode switch must be reopened to achieve transmission after the configuration.

Mode 0 Default Mode 3 Parameter setting

3. Installation Specifications

3.1. Structure

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

Pin NO.

Name

Function

Description

DB-9 female socket

RS-232 interface

Standard RS-232 interface

3.81 terminal block

RS-485, power interface

Standard RS-485 interface and pressure line power 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 receiving data

DC power interface

Power interface

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

DIP switch

Controlled by working mode

Antenna interface

SMA-K interface

external thread, 10mm, 50Ωcharacteristic impedance

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

3.2. Dimension

Unit：mm

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

4. Interface Defination

4.1. Power interface definition

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

diameter , 2.5mm diameter ;

Also choose the VCC and GND terminal power supply, only choose any one of the power supply is OK;

E34-DTU (2G4H27) can use 10~ 28V DC power supply, but it is recommended to use 12V or 24V DC power

supply.

4.2. RS232 Interface definition

The E34-DTU can be connected to the device via RS-232 using the standard DB-9 interface.

4.3. RS485 Interface definition

E34-DTU can connect the 485_A terminal and 485_B terminal with the device RS-485 A terminal and B terminal.

★

Pin NO.

Definition

Function

Description

VCC

Crimping power interface, positive

10~ 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

485_B

RS-485 interface, interface B

The RS-485 interface B is connected to the device interface B

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

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.

5. Technical indicators

5.1. Model specifications

Model

Frequenc

Transmit

power

Distance

Specifications

Application

E34-DTU（2G4H27）

2400

0.5

Automatic frequency

hopping, automatic packet

loss retransmission

Suitable for open environment

with few obstacles

★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 parameters

NO.

Model

Specification

Description

Size（H*W*D）

82 * 62 * 25mm

See more at 3.2 Dimension

Weight

141g

Tolerance: 4.5g

Temperature

-40℃～85℃

Meet industrial level

Antenna impedance

50 Ω

Standard 50 Ω characteristic impedance

Supply voltage

+10 ~ +28V DC

It is recommended to use 12V or 24V

Communication interface

RS232/RS485

Standard DB9 hole / 3.81 terminal block

Baud rate

Default 9600

from 1200 to 115200 bps

Address

Default 0

65536 configurable addresses

5.3. Frequency range and channels

Model

Default frequency

Frequency range

Channel

spacing

Channels

Chengdu Ebyte Electronic Technology Co.,Ltd. E34-DTU (2G4H27) user manual

E34-DTU（2G4H27）

2400 MHz

2400 ~ 2518 MHz

12 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. Transmit power level

Mode

8mW

32mW

126mW

500mW

E34-DTU（2G4H27）

√

★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. Current parameters

Model

Transmitting current mA

Standby current mA

12V

24V

12V

24V

E34-DTU（2G4H27）

210

153

20.5

★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.

5.6. Transceiver Length and Sub-packing Mode

Model

Buffer

Sub-package

E34-DTU（2G4H27）

256Byte

Automatic subcontracting of 27 bytes to send

★Note:

1. When the receiving data is more than a single packet capacity, the beyond part will be automatically assigned

to the second transmission until it is completed;

2. The data transceiver cannot receive data which is more than the buffer capacity;

6. Operating mode

E34-DTU(2G4H27) has four operating modes, if low power consumption is not required, normal communication is

recommended to configure the data transceiver for the normal mode (mode 0);

The factory default is normal mode (mode 0).

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