1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Asia-Teco Barcode Scanner QR Code Reader Module. These modules are designed for high-speed recognition, high integration, and broad compatibility, making them suitable for various applications such as payment systems and gate access control.
The modules support both 1D and 2D barcode symbologies and offer flexible transmission interfaces for secure data transfer.
2. Setup
2.1 Product Components
The barcode scanner modules come in various configurations, including GM861, QR26, and QR28. Each module is designed for specific integration needs.
Figure 1: Overview of 2D Barcode Scanning Modules
Figure 2: Product list showing GM861, QR26, and QR28 components
2.2 Interfaces Supported
The modules support USB and RS232 interfaces for versatile connectivity.
Figure 3: Back view of the module showing USB and RS232 interfaces
Note: Under the serial port, the TX voltage is VCC * 0.85. TX LOGIC_HIGH MIN VCC*0.8, TX LOGIC_LOW MAX VCC*0.25.
2.3 Product Wiring
Proper wiring is crucial for the module's functionality. Refer to the diagrams and tables below for connector pin assignments.
Figure 4: Product wiring diagram
12 PIN Connector Wire Sequence Description
| PIN | Function | PIN | Function |
|---|---|---|---|
| PIN1 | NC | PIN7 | USB-DP/D+ |
| PIN2 | VCC | PIN8 | PWRDWN |
| PIN3 | GND | PIN9 | BEEPER-PWM |
| PIN4 | RXD | PIN10 | RLED |
| PIN5 | TXD | PIN11 | NWAKE |
| PIN6 | USB-DM/D- | PIN12 | TRIG |
6 PIN Terminal Wire Sequence Description
| PIN | Function | PIN | Function |
|---|---|---|---|
| PIN1 | TXD | PIN4 | USB-DP |
| PIN2 | RXD | PIN5 | VCC |
| PIN3 | USB-DM | PIN6 | GND |
3. Operating Instructions
3.1 Scanning Functionality
The module features ultra high-speed recognition for screen barcodes and physical barcodes. It is highly integrated for easy use in various application environments, including payment terminals and gate access systems.
Figure 5: Module in a payment application environment
Figure 6: Highly compatible transmission interface
3.2 Automatic Sensing and Decoding
The module supports automatic sensing and powerful decoding capabilities, accurately scanning barcodes from mobile phones, screens, paper, plastic, and even color or dirty codes.
Figure 7: Examples of various barcode types that can be decoded
3.3 Supported Symbologies
The module can decode a wide range of 1D and 2D barcode types:
- 1-D: Codabar, Code 39, Code 32 Pharmaceutical (PARAF), Interleaved 2 of 5, NEC 2 of 5, Code 93, Straight 2 of 5 Industrial, Straight 2 of 5 IATA, Matrix 2 of 5, Code 11, Code 128, GS1-128, UPC-A, UPC-E, EAN/JAN-8, EAN/JAN-13, MSI, GS1 DataBar Omnidirectional, GS1 DataBar Limited, GS1 DataBar Expanded, China Post (Hong Kong 2 of 5), Korea Post.
- 2-D: Codeblock A, Codeblock F, PDF417, Micro PDF417, GS1 Composite Codes, QR Code, Data Matrix, MaxiCode, Aztec, HANXIN.
4. Maintenance
To ensure optimal performance and longevity of your barcode scanner module, follow these general maintenance guidelines:
- Keep the scanning window clean and free from dust, dirt, or smudges. Use a soft, lint-free cloth for cleaning.
- Avoid exposing the module to extreme temperatures, humidity, or direct sunlight.
- Handle the module with care to prevent physical damage.
- Ensure all connections are secure and free from corrosion.
5. Troubleshooting
If you encounter issues with your barcode scanner module, consider the following:
- No Power: Check the power supply connection and ensure it meets the specified voltage requirements (DC5V).
- Scanning Issues: Ensure the scanning window is clean. Verify that the barcode is within the optimal scanning range and angle. Check if the barcode symbology is supported by the module.
- Communication Problems: Confirm that the USB or RS232 interface is correctly connected to your host device. Check the wiring according to the diagrams in Section 2.3.
- Module Not Responding: Disconnect and reconnect the power supply. If the issue persists, consult the wiring diagrams and ensure all pins are correctly connected.
For persistent issues, please contact customer support.
6. Specifications
Below are the technical specifications for the barcode scanner modules:
Figure 8: Technical Specifications
| Parameter | Value |
|---|---|
| Voltage | 5 ± 5% VDC (3.3V power supply, slightly dim lighting) |
| Standby current | 170mA |
| Starting current | 260mA |
| Working current | 310mA |
| Interfaces Supported | USB, RS232 |
| Operating Temperature | -20 °C to 60 °C |
| Storage Temperature | -30 °C to 70 °C |
| Humidity | 5% to 95% relative humidity, non condensing |
| Code39 (13mil) | 2-15cm |
| QR (15mil) | 3.5-9cm |
| ENA-13 (13mil) | 2-15cm |
6.1 Physical Dimensions
Figure 9: Physical Dimensions
7. User Tips
While no specific user tips were provided, general best practices for barcode scanner modules include:
- Ensure adequate lighting for optimal scanning performance, especially for screen barcodes.
- For embedded applications, consider proper heat dissipation to maintain stable operation.
- Regularly check for firmware updates from the manufacturer to enhance performance and compatibility.
8. Warranty and Support
8.1 Warranty Information
The product comes with a one-year warranty from the date of original purchase. This warranty covers manufacturing defects but does not cover defects caused by misuse, fire, or other user-induced damage.
8.2 Contact Us
If you have any questions or require technical assistance, please send a message via Trade Manager. All messages will be answered within 24 hours from Monday to Saturday.
Figure 10: Warranty and Contact Information