Ebyte E90-DTU 900SL22-GPRS Manuale utente

E90-DTU (900SL22-GPRS)

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

Content

1.OVERVIEW...................................................................................................................................................................... 2

1.1 INTRODUCTION........................................................................................................................................................................... 2

1.2 FEATURES.....................................................................................................................................................................................3

1.3 STATION SYSTEM PARAMETERS.................................................................................................................................................... 4

1.4 PIN DESCRIPTION.........................................................................................................................................................................5

1.5 SIZE..............................................................................................................................................................................................7

2 QUICK START..................................................................................................................................................................8

2.1 HARDWARE PREPARATION AND COMMUNICATION TESTING......................................................................................................... 8

2.2 WORKING MODE AND FUNCTIONS............................................................................................................................................ 14

3 APPLICATION MODEL............................................................................................................................................... 17

4 NOTE............................................................................................................................................................................... 19

5 ABOUT US.......................................................................................................................................................................19

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

1.Overview

1.1 Introduction

E90-DTU (900SL22-GPRS) is a data transmission station from radio frequency to GPRS network server, which

realizes the transparent data transmission between sub-1g and GPRS network. The sub-1g radio frequency transceiver is

based on SEMTECH SX1262 radio frequency chip and supports LoRa spread spectrum technology. It is equipped with

high-performance MCU internally, which enables the module to have a variety of transmission modes.At the network end

of GPRS network, the radio supports LTE-FDD/TTE-TDD /WCDMA/ TD-SCDMA /CDMA/GSM wireless

communication data transmission, and supports LTE-FDD, LTE-TDD, dc-HSDPA, HSPA+, HSDPA, HSUPA, WCDMA,

TD-SCDMA, CDMA, EDGE and GPRS network data connection.

E90-DTU (900SL22-GPRS) can be directly connected to the upper computer via USB cable for parameter

configuration, without the need to install the driver, it is easy to change user-defined parameters.

This chapter is a quick introduction to E90-DTU (900SL22-GPRS) products. It builds the simplest hardware

environment to test the network transmission function of E90-DTU (900SL22-GPRS), that is, to realize the two-way

transmission of data from RF module to the network server.

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

1.2 Features

Can meet almost all M2M application needs;

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

registration package;

Support serial port caching function, the serial data can be cached to local before establishing connection

with the server;

The maximum downlink rate of GPRS data was 85.6 KBPS, and the maximum uplink rate was 85.6

KBPS.

Software/hardware dual door design, system stability, never crash;

Sub-1g radio frequency;

Support global license-free ISM 868/915mhz frequency band;

Support data transmission rate of 0.3kbps ~ 62.5kbps;

Based on SX1262/1268 development, support the new generation of LoRa technology;

Support RSSI for evaluating signal quality, improving communication network, ranging;

Support LBT, monitor channel environment noise before sending, improve communication success rate;

Industry-standard design, support - 40 ~ 85 ° C for a long time use;

Use USB to connect the computer, no need to install the driver, connected to the computer can be

configured parameters.

Support 8~28V wide voltage supply, DC power supply base and terminal power supply.

The power supply has good over current, over voltage, anti - reverse connection and other functions.

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

1.3 Station system parameters

Parameter

type

Parameter

Name

The parameter value

Description

Characteristic

parameters

Support

Frequency

Quad-frequency: GSM850, EGSM900,

DCS1800, PCS1900

Module can automatically search frequency

Frequency selection can be set with the AT

command

Conform to GSM Phase 2/2+

GPRS

Connection

characteristics

GPRS multi-slot class 12 (default)

GPRS multi-slot class 1~12 (configurable)

GPRS mobile station class B

GPRS Data

features

GPRS data downlink transmission: up to

85.6 KBPS

GPRS uplink data transfer: up to 85.6 KBPS

Coding formats: cs-1, cs-2, cs-3 and cs-4

Supports the PAP (password verification

protocol) protocol commonly used for PPP

connections

Support for protocols commonly used for

CHAP (query handshake authentication

protocol)

The built-in protocols:

TCP/UDP/FTP/PPP/HTTP/NTP/MMS/SM

TP/PING, etc.

Support for unstructured supplementary data

services (USSD)

The antenna

interface

SMA interface, NET signal output, 50ohm

characteristic impedance

Transmission

Power

Class 4 (2W)：

GSM850 and EGSM900

Class 1 (1W)：DCS1800 and PCS1900

Characteristic

parameters

The air rate

2.4kbps

8 adjustable level

（0.3、

1.2、

2.4、

4.8、

9.6、

19.2、

38.4、62.5kbps）

WOR role

receiver

Can be configured as a receiver/sender

WOR cycle

2000ms

500ms~4000ms

It can be configured as 500ms~4000ms

Transport mode

Transparent Transmission

Can be configured for transparent transmission

or fixed-point transmission

The module

address

0~65535

Default address 0

working

frequency

850.125MHz-930.125MHz

Default 868.125MHz, channel number 80,

channel interval 1MHz

Transmission

power

22dBm

level 4 adjustable (22, 17, 13, 10dBm)

Receiving

sensitivity

[email protected]

The receiver sensitivity is independent of the

baud rate and delay time

Baud rate

115200 bps

No modification supported

The antenna

interface

SMA Interface

RF signal output, 50 ohm characteristic

impedance

Station system

parameters

Flow loss value

(typical value)

66.5mA@12V

Idle state, no data transmission

Working

temperature

-30℃~+70℃

Extended to 40 ℃ ~ + 85 ℃ temperature

Working voltage

DC 8~28V

Recommend 12V/24V power supply

Size

108*75*37mm

Overall size (excluding antenna)

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

1.4 Pin Description

3GPP

Frequency

1 Timeslot

2 Timeslot

4 Timeslot

CS-1

9.05kbps

18.1kbps

36.2kbps

CS-2

13.4kbps

26.8kbps

53.6kbps

CS-3

15.6kbps

31.2kbps

62.4kbps

CS-4

21.4kbps

42.8kbps

85.6kbps

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

No.

Name.

Function

Grounding screw

Ground connection

DC_IN

Power adapter interface, power supply range 8~28V, recommended 12V/24V

DC_IN-

Power reference ground

DC_IN+

Power input, power supply range 8~28V, recommended 12V/24V

Reset

System reset button, long press time no requirement

USB

Micro USB：parameter configuration interface

Reload

Press 4~10s to restore the factory Settings

PWR

Red: power indicator

WORK

Yellow: data transmission indicator light; The light flashes when there is data

transmission

LINK

Yellow: network indication, always on after net

NET

4 G/GPRS antenna interface (SMA - K external thread hole, 50 Ω characteristic

impedance)

SIM

SIM card slot

RF antenna interface (SMA - K external thread hole, 50 Ω characteristic impedance)

Note: it is recommended to connect the housing with the earth through grounding screws.

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

1.5 Size

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

2 Quick start

2.1 Hardware preparation and communication testing

Before the test, connect the power supply, USB cable, SIM card (insert the gap outwards), antenna and other

hardware according to the recommended circuit. If the power cable is successfully connected, the PWR indicator will

always be on.

E90-DTU (900SL22- GPRS) device and E22-900TXXS module

5V—20V Power adapter

USB switch to TTL module and USB wire

GPRS/LTE Sucker antenna

Computer browser visit Chengdu Ebyte official website: www.ebyte.com, download the latest E90-DTU

(900SL22-GPRS) series product configuration tools, E22 series product configuration software and serial

assistant (this article USES XCOM), install USB 232/485 driver, run the software!

1. After connecting the E22-900TXXS module with the USB-to TTL module, open the officially provided E22

configuration tool and select the corresponding COM number. If the COM number cannot be selected, check

whether the serial driver is installed correctly.

Chengdu Ebyte Electronic Technology Co,;Ltd E90-DTU (900SL22-GPRS) user manual

2. Open the officially provided E90-DTU (900SL22-GPRS) configuration tool. If the USB is correctly connected, the

message box on the right side will prompt "device ready".

3. After entering the GPRS/2G network pass-through configuration mode, the parameters of GPRS/2G module can be

configured in the "setting relevant parameters" box. After the configuration is completed, click the "save NET

parameters" button, and the upper computer will prompt "save all parameters successfully". After completion, as

shown in the following figure:

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