Ebyte E32-DTU, 915L30 User Manual

E32-DTU (915L30)

Chengdu Ebyte Electronic Technology Co.,Ltd. E32-DTU (915L30) user manual

Content

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

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

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

2.Operation......................................................................................................................................................................3

3.Installation Specifications............................................................................................................................................5

3.1.Structure............................................................................................................................................................5

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.Air data rate...................................................................................................................................................... 9

5.6.Current parameters............................................................................................................................................9

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

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

7.Connection diagram when programming.................................................................................................................. 11

7.1.diagrammatic drawing.................................................................................................................................... 11

7.2.Parameter setting instruction..........................................................................................................................12

8.Connection diagram in test and application.............................................................................................................. 13

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

10.Practical application.................................................................................................................................................14

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

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

Chengdu Ebyte Electronic Technology Co.,Ltd. E32-DTU (915L30) user manual

1.Introduction

1.1. Brief Introduction

E32-DTU (915L30) is wireless data transceiver of 915M with standard RS232/RS485 connectors. They are half-duplex. TX & RX modems with LoRa technology and transparent transmission mode. Voltage supply ranges from 8V to 28V, Working frequency: 900~931MHz (Default:915MHz).

The LoRa direct sequence spread spectrum technology enables the longer communication distance and better power density concentration as well as superior anti-interference ability. The FEC algorism 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.

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 1W, 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 40mA (even lower under power-saving and sleep modes), TX

current ≤0.7A . ★ Embedded watch-dog and precise time layout, modem will restart automatically upon abnormal situation and work with previous parameters. ★ The transceivers adopt original SEMTECH SX1276 chip, customers highly comment the products because of the super reliability.

Chengdu Ebyte Electronic Technology Co.,Ltd. E32-DTU (915L30) user manual

2. Operation

Main parts

、 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.

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

Chengdu Ebyte Electronic Technology Co.,Ltd. E32-DTU (915L30) user manual

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

achieved.

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

Firing up E32-DTU 数传电台配置软件 (E32-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

Chengdu Ebyte Electronic Technology Co.,Ltd. E32-DTU (915L30) user manual

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

3. Installation Specifications

3.1. Structure

+ 11 hidden pages

Ebyte E32-DTU, 915L30 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1.Introduction

1.1. Brief Introduction

1.2. Features

2. Operation

3. Installation Specifications

3.1. Structure