Ebyte E840-DTU Manual de usuario

E840-DTU(4G-02)

4G/LTE Serial Server

Chengdu Ebyte Electronic Technology Co. Ltd                                                                                                                 E840-DTU(4G-02)User Manual 
 
Copyright ©2012–2019,Chengdu Ebyte Electronic Technology Co. LTD. 1
 
Contents 
PRODUCT OVERVIEW........................................................................................................................................................2 
1. INTRODUCTION ......................................................................................................................................................................................2 
2. FEATURES................................................................................................................................................................................................2 
3 DTU PARAMETER ...................................................................................................................................................................................3 
4 INTERFACE DESCRIPTION ......................................................................................................................................................................5 
5 PIN DEFINITION .......................................................................................................................................................................................6 
QUICK START ........................................................................................................................................................................7 
1 HARDWARE .........................................................................................................................................................................7 
1 DATA TRANSMISSION TEST................................................................................................................................................................. 10 
2 NETWORK FUNCTION.......................................................................................................................................................................... 12 
3 HIGH SPEED MODE............................................................................................................................................................................... 12 
4 SMS FUNCTION.................................................................................................................................................................................... 15 
AT COMMAND ................................................................................................................................................................... 18 
NOTES.................................................................................................................................................................................... 29 
IMPORTANT STATEMENT.............................................................................................................................................. 30 
REVERSION HISTORY ..................................................................................................................................................... 31 
ABOUT US............................................................................................................................................................................. 31

Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual

1 Product Overview

1.1. Introduction

E840-DTU (4G-02) is developed for serial port devices and

network servers to transmit data to each other through a network.It is a

LTE-FDD/LTE-TDD/WCDMA/TD-SCDMA/CDMA/GSM wireless

communication data transmission modem with diversity receiving

function, supporting LTE-FDD, LTE-TDD, DC-HSDPA, HSPA+,

HSDPA, HSUPA, WCDMA, TD-SCDMA, CDMA, EDGE and GPRS

network data connections, through simple AT commands Settings, you

can easily use this product to achieve two-way data transparent

transmission from serial to network.

The DTU is powered by the DC power supply or RS485 terminal

by a wide voltage of 8.0V to 28.0V. Support 4G card, RS485 and RS232. With circuits electrical isolation scheme for anti-interference

ability, it can be used in environments with strong electromagnetic interference, such as power industry. This manual is a quick

introduction to the modem E840-DTU (4G-02). It is the easiest hardware environment to test the E840-DTU (4G-02) network

transmission function, that is, to realize data being transmitted in both directions between the serial device (here, the computer) and the

network server.

1.2. Features

◼Almost meet all M2M application demands;

◼Support data transparent transmission, support TCP, UDP network protocol, support heartbeat package, registration

package function；

◼Support two-way serial transmission from device to network server for 230400 serial port baud rate and below,;

◼Support serial port large cache function, the serial port data can be cached locally before the server is established.；

◼Support SMS sending and receiving, SMS remote query / configuration device parameters；

◼Support multiple Socket links to send and receive at the same time；

◼Support Modbus RTU and Modbus TCP to automatically convert each other；

◼LTE-FDD：Max downstream rate of 150Mbps， Max upstream rate of 50Mbps，LTE-TDD：Max downstream rate of

130Mbps，Max upstream rate of 35Mbps；

◼With software/hardware double watchdog design, the system is stable, will never crash.

Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual

1.3 DTU parameter

Parameter

Value

Description

Characteristic

Frequency

LTE-FDD：B1/B3/B5/B8

LTE-TDD：B38/B39/B40/B41

WCDMA：B1/B8

TD-SCDMA：B34/B39

CDMA：BC0

GSM：900/1800MHz

LTE

characteristic

Support max. of 3GPP R8 non-CA Cat 4 FDD 和TDD

Support 1.4MHz~20MHz

Downstream support：MIMO

LTE-FDD：Max downstream rate 150Mbps， Max upstream rate50Mbps

LTE-TDD：Max downstream rate 130Mbps， Max upstream rate35Mbps

UMTS

characteristic

support 3GPP R8 DC-HSDPA，HSPA+，HSDPA，HSUPA and WCDMA

Support QPSK，16-QAM and 64-QAM modulation

DC-HSDPA：Max downstream rate 42Mbps

HSUPA：Max upstream rate 5.76Mbps

WCDMA： Max downstream rate 384Kbps， Max upstream rate 384Kbps

TD-SCDMA

characteristic

support CCSA Release 3 TD-SCDMA

Max downstream rate 4.2Mbps， Max upstream rate 2.2Mbps

CDMA2000

characteristic

support 3GPP2 CDMA2000 1X Advanced and 1xEV-DO Rev.A

EVDO：Max downstream rate 3.1Mbps，Max upstream rate 1.8Mbps

1X Advanced：Max downstream rate 307.2Kbps，Max upstream rate 307.2Kbps

GSM

characteristic

R99：CSD tx rate：9.6kbps，14.4kbps

GPRS：support GPRS multiple time slot level 33（default 33），coding format：

CS-1/CS-2/CS-3/CS-4

max of 4 Rx time slot for each frame，Max downstream rate107Kbps，Max upstream

rate 85.6Kbps

EDGE：support EDGE multiple time slot level 33（default 33），support GMSK and 8-PSK

coding format

Downstream coding format：CS 1-4 and MCS 1-9，upstream coding format：CS 1-4

and MCS 1-9

Max downstream rate 296Kbps，Max upstream rate 236.8Kbps

Network protocol

characteristic

Support

TCP/UDP/PPP/FTP/HTTP/NTP/PING/QMI/NITZ/CMUX/HTTPS/SMTP/MMS/FTPS/

SMTPS/SSL/FILE protocol

support PAP (Password Authentication Protocol) and CHAP (ChallengeHandshake

Authentication Protocol)

Hardware

Characteristic

Antenna

SMA

Data interface

RS485 /RS232

Baud rate

Support max. 921600bps，default 115200bps

Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual

Transmitting power

Class 4 (33dBm±2dB) for GSM900

Class 1 (30dBm±2dB) for DCS1800

Class E2 (27dBm±3dB) for GSM900 8-PSK

Class E2 (26dBm±3dB) for DCS1800 8-PSK

Class 3 (24dBm+2/-1dB) for CDMA BC0

Class 3 (24dBm+1/-3dB) for WCDMA bands

Class 2 (24dBm+1/-3dB) for TD-SCDMA bands

Class 3 (23dBm±2dB) for LTE-FDD bands

Class 3 (23dBm±2dB) for LTE-TDD bands

Sensitivity

FDD B1: -101.6dBm (10M)

FDD B3: -101.9dBm (10M)

FDD B5: -102dBm (10M)

FDD B8: -102.1dBm (10M)

TDD B38: -101.3dBm (10M)

TDD B39: -101.2dBm (10M)

TDD B40: -101.4dBm (10M)

TDD B41: -101.4dBm (10M)

WCDMA B1: -112dBm

WCDMA B8: -112dBm

TD-SCDMA B34: -110dBm

TD-SCDMA B39: -110dBm

CDMA BC0: -108dBm

GSM 900: -109dBm

GSM 1800: -109dBm

Consumption（Typical）：

11uA @power off

1.8mA @LTE sleep (PF=128)

1.5mA @LTE sleep (PF=256)

20mA @ free

Bandwidth

1.4/3/5/10/15/20MHz

Operating temperature

-30℃- +70℃, extending to -40℃~+85℃

Operating voltage

DC ８V~２８V

Size

82×84×24mm

RS485 /RS232

3GPP frequency

TX（MHz）

RX（MHz）

EGSM900

880~915

925~960

DCS1800

1710~1785

1805~1880

CDMA BC0

824~849

869~894

WCDMA B1

1920~1980

2110~2170

WCDMA B8

880~915

925~960

TD-SCDMA B34

2010~2025

TD-SCDMA B39

1880~1920

LTE-FDD B1

1920~1980

2110~2170

LTE-FDD B3

1710~1785

1805~1880

LTE-FDD B5

824~849

869~894

LTE-FDD B8

880~915

925~960

LTE-TDD B38

2570~2620

LTE-TDD B39

1880~1920

LTE-TDD B40

2300~2400

LTE-TDD B41

2555~2655

Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual

1.4 Interface description

Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual

1.5 Pin definition

Pin No.

Name

Description

RS232

485_A

Connect to port A of other RS485 devices

485_B

Connect to port B of other RS485 devices

GND

Ground

VCC

Power supply，range: 8~28V

PWR

Power indicator

WORK

Blue: Data receiving and transmitting indicator, when the network receives data or the

serial port receives data (50ms high/10ms low)

Green: device status indicator,

Low: The device is powered on to search for SIM card

1800ms low, 200ms high: the device checks the correct SIM card and is

attaching to the network;

High: The device is attached to the network successfully.

NET

Green: SocketA link connection status indication pin

High: SocketA is successfully connected to the web server;

Low: SocketA did not successfully connect to the network server;

Blue: SocketB link connection status indication pin

High: SocketB is successfully connected to the web server;

Low: SocketB did not successfully connect to the network server;

DC8~28V

For power adaptor，range: 8~28V

RST

Reset switch（downward，reset）

Restore

Operating dip switch

Once power on,let DTU switch top-down for 3~10S，and bottom-up，then DTU

enters factory setting and restart immediately

SIM

ANT

Antenna（SMA-K，50Ω impedance match）

Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual

2.Quick start

2.1 Hardware

Hardware for test are as follows：

UART cable connected according to recommended circuit diagram，SIM card and antenna

E840-DTU(4G-02)

12V Power Adaptor

USB to RS485 converter or USB to RS232 converter

(optional)

LTE sucker antenna

Connect the power supply, antenna, SIM card, serial cable and other hardware before testing.

1. Access the official website of EBYTE: www.ebyte.com, to download the latest GPRS/E840-DTU series product

configuration tool, install USB to 232/485 driver, run the software!

2. Select the corresponding COM port number. The factory default serial port baud rate is 115200, 8N1, as shown

Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual

below:

1. Click the tool "Enter Configuration Status" button and wait for the device parameters to be automatically obtained. After

completion, the following figure is displayed:：

2. Query the signal strength, set the device connection server IP and port number to be: 116.62.42.192, 8124; (Ebyte

test server), and finally click "Save all parameters", and finally as shown below:：

Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual

3. Click the tool "Module Restart" button and wait for the device LINK light to be on.

4, Search "Ebyte IoT expert" WeChat public number, enter the page, click: Customer Support -> Device

Test, the mobile phone screenshot interface is as follows:

5. Use the PC-side tool to send data to, and use the mobile phone to send data to the device. The communication test

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