SIMCOM A7670G LABE 4G Cat1 Core Board Development Board User Manual

1. Introduction

This manual provides essential information for the setup, operation, and maintenance of the SIMCOM A7670G LABE 4G Cat1 Core Board Development Board. This module is designed for global 4G GSM voice network applications and features dual Micro SIM slots. Please note that this specific model does not include GPS functionality.

2. Product Overview

2.1 Key Features

• Strong Compatibility: Mcore full range package identical.
• Wide Voltage Support: Operates with a 5-16V DC power supply, suitable for M2M level applications.
• Abundant Data Support: Provides drivers, module firmware (FW), and STM code.
• Highly Integrated: Features integrated power supply, SIM card interface, TTL, and RF components.
• Multi-frequency Product: Supports 2G, 3G, 4G, CATM, NB, and 5G bands.
• FAE Online Support: Technical support available (China time only).

2.2 Applications

The SIMCOM A7670G module is versatile and can be integrated into various IoT and M2M applications, including:

• Intelligent Agriculture: Agricultural irrigation systems, smart greenhouses, animal husbandry, and aquaculture monitoring.
• Sharing Economy: Integration into toy cars, massage chairs, vending machines, toy machines, and coffee machines.
• Wisdom Energy: Used in charging piles for electric vehicles.
• Smart Industry: Remote control systems, data monitoring, and monitor consoles.

3. Specifications

The following table details the technical specifications of the SIMCOM A7670G LABE module:

4. Setup

Follow these steps to set up your SIMCOM A7670G LABE Core Board:

1. Inspect the Module: Carefully examine the module for any physical damage.
2. Insert Micro SIM Card(s): The board features dual Micro SIM slots. Gently insert your Micro SIM card(s) into the designated slots. Ensure correct orientation as indicated on the board.

   

3. Connect Antenna: Attach a compatible 4G antenna to the IPEX 1 antenna interface on the board. Ensure a secure connection.

   

4. Power Supply Connection: Connect a 5-16V DC power supply to the appropriate power input pins (VBUS, GND). Refer to the pinout diagram for exact connections.
5. UART/USB Connection: Connect the module to your host microcontroller or computer via the 3.3V TTL UART interface or the USB port for communication and control.

   

   

   

5. Operating Instructions

1. Power On: Once all connections are secure, apply power to the module. The Power LED should illuminate.
2. Network Registration: The Network LED will indicate the module's network status. It will typically blink while searching for a network and become solid or blink at a slower rate once registered.
3. Communication: Use AT commands via the UART or USB interface to control the module. Refer to the SIMCOM A7670G AT Command Manual for detailed commands for network configuration, data transmission, and voice calls.
4. Data Transmission: Configure the module for GPRS, LTE, or other supported data modes using AT commands. Establish a data connection to send and receive data.
5. Voice Calls: The module supports voice functionality. Use appropriate AT commands to initiate and receive voice calls.

5.1 Important Notes

• This module does not support GPS functionality.
• Ensure your SIM card is active and has a data/voice plan compatible with the module's supported network bands.
• Proper antenna placement is crucial for optimal signal reception.

6. Maintenance

• Cleaning: Keep the module clean and free from dust and debris. Use a soft, dry cloth for cleaning. Avoid liquid cleaners.
• Storage: Store the module in a dry, cool environment, away from direct sunlight and extreme temperatures.
• Firmware Updates: Periodically check the manufacturer's website for firmware updates to ensure optimal performance and access to new features.
• Handling: Handle the module with care to avoid damaging the sensitive electronic components. Avoid static discharge.

7. Troubleshooting

• Module not powering on:
  • Verify the power supply voltage is within the 5-16V DC range.
  • Check power connections for proper polarity and secure contact.
• No network registration:
  • Ensure the SIM card is correctly inserted and active.
  • Check antenna connection and ensure it's suitable for the operating frequency bands.
  • Verify network coverage in your location.
  • Confirm the module's firmware is up to date.
• Communication issues (UART/USB):
  • Check baud rate and other serial port settings.
  • Ensure correct driver installation for USB communication.
  • Verify the host system's compatibility with the module's communication interfaces.
• Module not responding to AT commands:
  • Ensure proper termination of AT commands (e.g., CR/LF).
  • Check the power supply stability.
  • Verify the UART/USB connection is active and correctly configured.

8. User Tips

• Microcontroller Integration: When integrating with microcontrollers like ESP32, ensure you consult the A7670G's hardware design guide and AT command documentation for proper interfacing and software library compatibility. Voltage level shifters might be required for UART communication if the microcontroller operates at a different logic level than 3.3V.
• Antenna Selection: For optimal performance, choose an antenna specifically designed for the 4G LTE and GSM frequency bands you intend to use.
• Power Supply Stability: Cellular modules can draw significant current during transmission bursts. Ensure your power supply is stable and can provide sufficient current to prevent unexpected resets or malfunctions.
• No GPS Functionality: Remember that this specific A7670G LABE model does not support GPS. If GPS is required for your application, consider a different module variant.

9. Warranty and Support

For technical assistance, documentation, and support, please refer to the official SIMCOM resources or contact your vendor, HiTech Wireless Module And Accessories Store. FAE online support is available during China time business hours.

Specific warranty details are typically provided at the point of purchase or through official SIMCOM channels. Please retain your purchase receipt for warranty claims.

9.1 Additional Resources

For further information on SIMCOM products and services, including design and manufacturing support, you may refer to the following video: