QT241N/G (4 serial ports, 2 network ports, 4G)-Global supplier

13th Floor, Building I1, Zhongjian Optics Valley Star, No. 799 Gaoxin Avenue, Donghu High tech Zone, Wuhan City

QT241N/G Series User Manual

1、 Product Overview

QT241N/G is an embedded computer based on TIAM3352 single core ARM Cortex A81GHz clock frequency. The system provides RS485 communication, wired network communication, and 4G communication for the entire network. It has the characteristics of small size, low power consumption, and high efficiency, and is suitable for power concentrators, communication management, industrial control, gateways, and other occasions.

Product Features

1. Hardware characteristics

TIAM3352CPU:

ARMCortexA8， Main frequency 1GHz

Memory:

512MbyteDDR2

FLASH：

512MbyteNANDFlash

Encryption:

Support PRNG/DES/3DES/AES/SHA/HMAC encryption, up to 256 bit encryption mode

RTC:

High precision real-time clock with built-in power supply battery

Debugging port:

One serial port is the system console port. Baud rate: 115200, data bits: 8, stop bit: 1, checksum: none, flow control: none

RS485：

4-channel independent RS485 communication, internal fully isolated protection design

Wired network:

2-channel 10M/100M adaptive industrial Ethernet, standard RJ45 interface

15KV TVS protection, internal fully isolated protection design

wireless network:

Support FDDLTE: Band1/3, Band2/4/5/13/17/25 (optional)

Supports CDMA1XRTT/EVDO800/1900MHz

Supporting the entire network (optional): TDD-LTE, FDD-LTE, EVDO, WCDMA, TD-SCDMA, CDMA1X, GPRS/EDGE

1 SIM card interface, 1 antenna interface

Theoretical bandwidth:

FDDLTE: Cat-12 (downstream speed 600Mbps, upstream speed 150Mbps)

Cat-6(下行速率300Mbps，上行速率50Mbps)

Cat-4(下行速率150Mbps，上行速率50Mbps)

TDDLTE(下行速率61Mbps，上行速率18Mbps)

CDMA20001XEVDORevA (downlink rate 3.1Mbps, uplink rate 1.8Mbps)

WCDMA(下行速率42Mbps，上行速率5.76Mbps)

TD-SCDMA (downlink speed 4.2Mbps, uplink speed 2.2Mbps)

SDCARD：

SD card interface

power supply

Input voltage: DC9-36V

Single machine power consumption:<5W

mechanical properties

Metal material of shell

Size: 196 * 120 * 38MM (W * D * H)

working environment

Working temperature: -20 ℃~+60 ℃

Working humidity: 5%~95%

Software Features

2.1 System Characteristics

QT241N/G comes pre installed with a Linux operating system based on TIAM3352, version 4.4.12. Applications that meet POSIX standards or UNIX like platforms. For system specific hardware devices, the kernel provides a simple and easy-to-use driver interface that can accelerate user application development.

The software system of QT241N/G system is divided into three parts, namely Bootloader, Linux kernel, and rootfs. Bootloader is an open source project that complies with GPL terms. UBoot mainly boots the kernel and supports NFS mounting and NANDFlash startup; The Linux kernel is the bottom layer of the entire operating system, responsible for driving the entire hardware and providing various core functions required by the system; Rootfs is a method and data structure used to clarify files on a disk or partition, that is, a method of organizing files on a disk.

2.2 Environmental Configuration

2.3 Management machine login

IP：eth0：192.168.1.100

eth1：10.10.1.100

Username: root

3、 Interface definition

1. Power interface POWER

2. LED indicator light

3. USB interface

4. Network interface

5. RS485 interface

6. Reset interface

7. Debug serial port

8. SD card interface

9. SIM card interface

10.4G antenna interface

11. Label identification

4、 Frequently Asked Questions

1. Forgot the IP address that has been set:

You can use the RST button to restore the factory default IP address

2. The project cannot be downloaded:

A. First, check if there are any other folders in the project folder. If so, remove them and try again;

B. Next, check if the computer's IP is set in the same network segment as the device.

3. After successful download, the main program or driver cannot run:

A. Select the correct device model and try checking the option to update the main program;

B. Next, check if the driver version is correct.

4. Unable to connect to the internet after using a normal SIM card:

Firstly, ensure that the card is loaded in a power-off state;

Return the card and lay it flat again;

5. After running for a few minutes, the wireless connected device drops:

Firstly, check if the SIM card can access the external network. If it is a dedicated network card, please contact us;

If you can access the external network, please contact the SIM card supplier to obtain the APN and reset it. Go to QTOUCH ->Real time Database ->Set APN.

After running for a long time, the wireless connected device drops:

First, confirm if the SIM card data has been used up.

If the self inspection cannot solve the problem, please contact our application support engineer for assistance.