4g dtu transparent transmission module

The 4G DTU transparent transmission module developed by Chengdu Zongheng Intelligent Control is a product that supports two-way transparent transmission. Users do not need to care about complex protocols. The product is two-way transparent transmission and only requires simple configuration. At the same time, the product is 4G full network, supporting all domestic operator networks. The communication module uses CTA1 series modules, which is highly cost-effective. A 4G DTU transparent transmission module is as low as 139 yuan. The product adopts guide rail installation, which is easy to install and takes up little space.

4g dtu transparent transmission module parameters

serial port

power supply

Number of ports	RS485*1	Voltage	9~36V
baud rate	600～921600bps	current	60mA(aver) @9V 30mA(aver) @36V

Network parameters/frequency band

LTE-FDD	B1/B3/B5/B8
LTE-TDD	B34/B38/B39/B40/B41
GSM	900/1800MHz

data

LTE-FDD	Max 10Mbps(DL)/Max 5Mbps(UL)
LTE-TDD	Max 7.5Mbps(DL)/Max 1Mbps(UL)
EDGE	Max 236.8Kbps(DL)/Max 236.8Kbps(UL)
GPRS	Max 85.6Kbps(DL)/Max 85.6Kbps(UL)

4g dtu transparent transmission module function

·Support JSON, Modbus RTU/TCP

· 1 RS485 interface

· TCP_Client/ MQTT_Client

· Set time point to trigger action

· Cloud forwarding and cloud networking

·Network registration package, heartbeat package

· Hardware watchdog

· Data triggering and scheduled reporting

·Remote configuration and remote upgrade

· The host computer supports import and export of configuration files

4g dtu transparent transmission module two-way transparent transmission

Other explanations

At present, mobile communication technology is dominated by 4G technology. 3G technology can no longer meet many of users’ business requirements. 5G technology is still in the research and development stage, so the advantages of 4G technology are fully exposed. 4G technology is mainstream, so we must study its key technologies accordingly. The following are the key technologies of 4G technology.

Orthogonal Frequency Division Multiplexing Technology (OFDM) OFDM technology is actually a type of multi-carrier modulation. Its principle is to divide the channel into several orthogonal sub-channels and convert high-speed serial data signals into low-speed parallel sub-data signals. The sub-data The signal is modulated and transmitted on these orthogonal sub-channels. Orthogonal signals can be separated by using correlation demodulation technology at the receiving end. Due to the use of orthogonal channels, this reduces mutual interference between sub-channels. The use of OFDM technology for transmission can improve spectrum utilization, enhance the signal’s anti-fading ability, reduce inter-symbol interference, and increase the data transmission speed.

The core idea of software radio technology is to construct an open, standardized and modular universal hardware platform, and use software to complete various functions such as working frequency band, modulation and demodulation type, data format, encryption mode, communication protocol and so on. Broadband A/D and D/A converters are placed as close as possible to the antenna to develop a new generation of wireless communication systems that are highly flexible and open.