Chengdu Ebyte Electronic Technology Co., Ltd. E90-DTU(900SL22-4G)Usermanual
Copyright ©2012–2019,成都亿佰特电子科技有限公司 2
1 Introduction
1.1 Brief Introduction
E90-DTU(900SL22-4G) is a DTU for RF transmission to 4G network, which enables transparent transmission
between Sub-1G and 4G network. This DTU uses the SX1262 RF chip from SEMTECH, supporting LoRa spread
spectrum technology, and it is equipped with a high-performance MCU, making it have multiple transmission modes.
At the same time, the module has a built-in power amplifier (PA) and low noise amplifier (LNA), the test
communication distance can reach 10km. On the 4G network side, the DTU supports
LTE-FDD/LTE-TDD/WCDMA/TD-SCDMA/ CDMA/GSM wireless communication, and supports
LTE-FDD/LTE-TDD/DC-HSDPA/HSPA+/HSDPA/ HSUPA/WCDMA/ TD-SCDMA/CDMA/EDGE/GPRS network
communication.
E90-DTU(900SL22-4G) can be directly connected to a computer via USB and parameters setting. It is easy to
change the parameters without installing a driver.
1.2 Features
■Able to meet almost all M2M application needs；
■Supporting data transparent transmission, TCP/UDP network protocol, heartbeat packet and registration packet;
■Supporting serial port large cache function, serial port data can be cached locally before establishing connection
with server;
■Supporting two Socket links to send and receive at the same time;
■Software/hardware double watchdog design, stable system, never crash;
■Sub-1G wireless communication;
■Communication distance up to 10km;
■Supporting ISM 868/915 MHz frequency band;
■Suporting 0.3kbps～62.5kbps data rate;
■Based on SX1262, Support the new generation of LoRa technology;
■Supporting RSSI;
