Ebyte E840-DTU - Product Overview; 1.1 Introduction; 1.2 System parameter

Chengdu Ebyte Electronic Technology Co.,Ltd E840-DTU(4G-02E) User Manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co.,Ltd
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1. Product overview
1.1 Introduction
E840-DTU (4G-02E) is an LTE digital transmission module product launched by E-Tech. The software of this
product is fully functional and covers most common application scenarios. Users can implement serial-to-network server
through simple setup. Two-way data transparent transmission.
The radio is powered by the DC power supply or RS485 terminal in the power supply section and is powered by a
wide voltage of 8.0V to 28.0V. Support mobile, China Unicom, Telecom 4G card, RS485 and RS232 circuits use
electrical isolation scheme, with anti-interference ability, can be used in some environments with strong electromagnetic
interference, such as some power industry.
1.2 System parameter
Parameter
Value
Description
Characteristic
Frequency
LTE-FDD：B1/B3/B7/B8/B20/B28A
WCDMA：B1/B8
GSM：B3/B8
LTE
characteristic
Support max. of 3GPP R8 non-CA Cat 4 FDD and TDD
Support 1.4MHz~20MHz , Downstream support： MIMO
LTE-FDD: Max downstream rate 150Mbps, Max upstream
rate50Mbps
WCDMA characteristic
WCDMA: Max downstream rate 384Kbps， Max upstream rate
384Kbps
GSM characteristic
GPRS: Max downstream rate 107Kbps，Max upstream rate
85.6Kbps EDGE: Max downstream rate 296Kbps，Max
upstream rate 236.8Kbps
Network protocol
characteristic
TCP/UDP/PPP/FTP/HTTP/NTP/PING/QMI/NITZ/CMUX/HTTP
S/SMTP/MMS/FTPS/
SMTPS/SSL/FILE
PAP (Password Authentication Protocol) and CHAP
(ChallengeHandshake Authentication Protocol)
Hardware Characteristic
Antenna
SMA
Data interface
RS485 /RS232
Baud rate
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