Ebyte E840-DTU Manual de usuario

4G/LTE Serial Server

E840-DTU（4G-01）

User Manual

This manual may change with the continuous improvement of the product. Please refer to the latest version of the instruction.

Chengdu Ebyte Electronic Technology Co., Ltd. reserves all rights of final interpretation and modification of this manual.

4G/LTE Serial Server E840-DTU（4G-01）User Manual

Version No.

Date

Description

Issued by

1.00

2018/07/16

Initial version

huaa

E840-DTU (4G-01) is a developed for serial devices and network servers to transmit data to each other via network. This product is a

LTE-FDD/LTE-TDD/WCDMA/TD-SCDMA /CDMA/GSM wireless communication data transmission station with diversity reception 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,

users can easily use this product to achieve two-way data transparent transmission from serial to network.

This manual is a quick introduction to the E840-DTU (4G-01) modem. With the easiest hardware environment to test the E840-DTU (4G-01) network

transmission function, that is, to realize the serial device (the computer) to the network server. Data is transmitted in both directions.

Features

Almost meet all M2M application demands;

Support data transparent transmission, support TCP, UDP network protocol, support heartbeat package, registration package function；

Support serial port caching function, the serial port data can be cached locally before the connection is established with the server;

LTE-FDD：Max downstream rate of 150Mbps， Max upstream rate of 50Mbps，LTE-TDD：Max downstream rate of 130Mbps，Max upstream rate of

35Mbps；

Support TCP/UDP；

Support 8~28V wide voltage supply, adopt both DC power supply and terminal power supply；

Electrical isolation is used for RS485 circuit, which has lightning protection, anti-surge scheme, and anti-interference ability.

4G/LTE Serial Server E840-DTU（4G-01）User Manual

Contents

1. PRODUCT INTRODUCTION......................................................................................................................................................... 3

1.1. BRIEF INTRODUCTION....................................................................................................................................................................3

1.2. DTU PARAMETER......................................................................................................................................................................... 3

1.3. INTERFACE DESCRIPTION................................................................................................................................................................6

1.4. PIN DEFINITION............................................................................................................................................................................ 7

2. QUICK START..................................................................................................................................................................................7

2.1. HARDWARE.................................................................................................................................................................................. 7

2.2. DATA TRANSMISSION TEST............................................................................................................................................................ 9

2.2.1. Operating mode is as follows：

........................................................................................................................................

4. AT COMMAND.............................................................................................................................................................................12

5. NOTES............................................................................................................................................................................................19

6. IMPORTANT STATEMENT..........................................................................................................................................................19

7. ABOUT US.....................................................................................................................................................................................20

4G/LTE Serial Server E840-DTU（4G-01）User Manual

1. Product introduction

1.1. Brief introduction

E840-DTU (4G-01) is an LTE digital radio modem product developed by Ebyte. The software is fully functional and covers most common application scenarios.

Users can implement two-way data transparent transmission between serial and network server with simple settings. .

The radio is powered by the DC power supply or RS485 terminal by a wide voltage of 8.0V to 28.0V. Support mobile, China Unicom, Telecom 4G card. Electrical

isolation scheme is used for RS485 and RS232 circuits, With anti-interference ability, it can be used in some environments with strong electromagnetic interference,

such as power industry.

1.2. 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 and TDD

support 1.4MHz~20MHz rf band

Downstream supports： 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 和 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 和 1xEV-DO Rev.A

EVDO： Max downstream rate 3.1Mbps， Max upstream rate1.8Mbps

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： 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

Downstream coding format：CS1-4 和 MCS 1-9，upstream coding format: CS 1-4 和 MCS

1-9

Max downstream rate296Kbps， Max upstream rate 236.8Kbps

4G/LTE Serial Server E840-DTU（4G-01）User Manual

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 (Challenge Handshake

Authentication Protocol)

Hardware

Antenna

SMA Interface

Data interface

RS485 /RS232

Baud rate

Support max 921600bps，default 115200bps

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

4G/LTE Serial Server E840-DTU（4G-01）User Manual

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 @ idle

Bandwidth

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

Operating temperature

-30℃- 75℃

Operating voltage

DC 8V~28V

Size

82×84×24mm

RS485 /RS232

Electrical isolation, RS485/RS232

3GPP Frequency

Transmitting（MHz）

Receiving（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

4G/LTE Serial Server E840-DTU（4G-01）User Manual

1.3. Interface description

4G/LTE Serial Server E840-DTU（4G-01）User Manual

1.4. 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

UART communication indicator

NEL

DTU SOCK0 network operating indicator

Off：Initiating

Flash quickly：Initiating failed（indicator off for 1900ms，on for 100ms）

Flash slowly：connect to base station，building communication with network server (indicator off for 300ms，

on for 100ms)

On：connect to 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）

2. Quick start

2.1. Hardware

Hardware for test are as follows：

One piece of E840-DTU(4G-01) modem

One piece of 12V power adaptor

USB to RS485 converter or USB to RS232 converter (optional)

One piece of LTE sucker antenna(TXGN-XP-300)

4G/LTE Serial Server E840-DTU（4G-01）User Manual

Before testing, connect the serial cable, SIM card, antenna and other hardware according to the recommended circuit.

1、 1. Enter the AT command mode and send +++ in the serial port assistant (except for +++ , one does not need to check to send a new line,

other AT commands need to check to send a new line to be valid), one must send any other AT command within 3s after sending +++

command (except for restarting the AT command) to enter the AT command mode completely.

2、 After entering AT command mode，use AT+CPIN to check SIM card connection status：

For example：AT+CPIN

+OK=1

Means SIM card is connected，use AT+CSQ to read current signal strength;

For example：AT+CSQ

+OK=26

Indicates that the current signal strength is normal. If the response is 99, the current signal strength is abnormal. Check whether the current

antenna is connected or whether the surrounding base station is abnormal.

Execute the parameter modification command. If the baud rate is modified, it needs to be restarted to be valid.

3、 Connect to server，AT+SOCK=TCPC,116.62.42.192,31687 （The parameters are separated by commas in English characters, and the IP

commands are separated by English characters.），for SOCK1，SOCK2，SOCK3，one needs to add an enable command on the front end.

SOCK setting

For example：AT+SOCK=TCPC,116.62.42.192,31687

+OK

SOCK1、SOCK2、SOCK3 setting

For example：AT+SOCK=0,TCPC,116.62.42.192,31687

+OK

Setting succeed。

4、Restart

After returning +OK, it is necessary to restart the command AT+REBT to be valid. Here, the IP is only used for demonstration. The actual

connection is based on the IP of the server to be connected.

4G/LTE Serial Server E840-DTU（4G-01）User Manual

4、 4. After the base station is connected, the NET light is always on to indicate that the server is connected, and transparent transmission is

available.

2.2. Data transmission test

Software tools used for the test are as follows：

Any serial port assistant, XCOM is used in this manual, which can be downloaded from our official website.

2.2.1. Operating mode is as follows：

1、operating mode includes：transparent transmission mode、AT configuration mode

a) Transparent transmission mode: After power-on, the radio works in the transparent transmission mode by default, and automatically starts the network

connection. When the connection is established with the server, any data received by the serial port will be transparently transmitted to the server. At the

same time, it can also receive data from the server. After receiving the server data, the module will output directly through the serial port. The maximum

length of data supported by this module is 1024 bytes. When multiple links are connected to the server at the same time, the data packet will be sent to the