Chengdu Ebyte Electronic Technology Co. Ltd E840-DTU(4G-02)User Manual
Copyright ©2012–2019,Chengdu Ebyte Electronic Technology Co. LTD. 2
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.
