SIMCOM A7670E FASE Core Board User Manual

1. Introduction

The SIMCOM A7670E FASE Core Board is a multi-band LTE-FDD/LTE-TDD/GSM/GPRS/EDGE module solution designed in a Surface Mount Technology (SMT) type. It supports LTE CAT1 with data transfer speeds up to 10Mbps. This module offers robust extension capabilities through a variety of interfaces including UART, USB2.0, and GPIO, providing significant flexibility and ease of integration for diverse customer applications.

The A7670E utilizes an LGA package, which is compatible with the SIM7070 Series, minimizing investment and enabling a faster time-to-market for product development. Its unique combination of performance, security, and flexibility makes it an ideal choice for applications requiring high-throughput data communication across various radio propagation conditions.

This manual provides essential information for the proper setup, operation, and maintenance of your A7670E FASE Core Board.

2. Product Overview

2.1 Key Features

• Small Size LTE Cat1 Module.
• LGA package with rich interfaces.
• Suitable for LTE and GSM networks.
• Rich software functions: FOTA (Firmware Over-The-Air), LBS (Location Based Service), SSL (Secure Sockets Layer).
• Package compatible with SIM7070 Series.
• Integrated GPS/GNSS functionality (FASE variant).

2.2 Product Variants

The A7670X series offers different variants based on features:

• A7670E With GPS (FASE): Includes GPS/GNSS functionality.
• A7670E Without GPS (LASE): Does not include GPS/GNSS functionality.

Figure 1: SIMCOM A7670E FASE Core Board

Figure 2: Basic Characteristics of A7670E Module (Strong compatibility, Wide voltage, Abundant data, Highly integrated, Multi-frequency products, FAE online support)

3. Specifications

The following table details the technical specifications of the A7670E FASE Core Board:

Figure 3: A7670E Product Parameters Table

3.1 Network Band Details by Variant

• A7670C: LTE-FDD B1/B3/B5/B8, LTE-TDD B34/B38/B39/B40/B41, GSM 900/1800MHz
• A7670E: LTE-FDD B1/B3/B5/B7/B8/B20, GSM 900/1800MHz
• A7670SA: LTE-FDD B1/B2/B3/B4/B5/B7/B8/B28/B66, GSM 850/900/1800/1900MHz

Figure 4: A7670E Core Board Layout Diagram (Top and Bottom views with pinouts and component placement)

4. Setup and Installation

Follow these steps to set up your A7670E FASE Core Board:

4.1 SIM Card Installation

1. Locate the SIM card slots (SIM1 and SIM2) on the board. The A7670E supports MIRCO SIM cards.
2. Gently open the SIM card tray by sliding it or lifting the latch as indicated on the board.
3. Insert the MIRCO SIM card into the slot with the gold contacts facing down and the notched corner aligned correctly.
4. Close the SIM card tray securely.
5. Note: The dual SIM card function is dependent on the module and its firmware. By default, single SIM card operation is supported. For dual SIM functionality, please consult the module's detailed documentation or contact customer service.

Figure 5: SIM Card Slots on A7670E Module (Front View)

Figure 6: SIM Card Slots on A7670E Module (Rear View)

4.2 Antenna Connection

1. Identify the IPEX 1 antenna interface on the board.
2. Connect your compatible LTE/GSM antenna to this interface. For GPS functionality (FASE variant), ensure a GPS antenna is also connected to its dedicated port if available or integrated.
3. Ensure the antenna is securely connected but do not overtighten.

Figure 7: A7670E Module with FPC Antenna

Figure 8: A7670E Module with GPS Antenna

4.3 Power Supply Connection

• The core board requires a 5-16V DC power supply.
• The A7670E module itself operates within a supply voltage range of 3.4V to 4.2V. Ensure your power management circuit provides the correct voltage to the module.
• Connect the power supply to the designated power input pins (VBUS, GND) on the board.
• Verify correct polarity before applying power.

4.4 USB and UART Connections

• Connect the board to a host system via the USB port for data communication, debugging, and firmware updates.
• The UART interface operates at 3.3V TTL by default and can be used for AT command communication with the module.

5. Operation

Once the board is properly set up and powered, it will initiate connection to the cellular network and GPS satellites (if FASE variant and antenna connected).

• Power/Network LED: Observe the LED indicator for power status and network activity. Refer to the module's detailed documentation for specific LED blink patterns and their meanings.
• Data Communication: Utilize the USB or UART interface to send AT commands to the module for network registration, data transmission, and other functionalities.
• GPS/GNSS (FASE variant): If equipped with GPS, the module will attempt to acquire satellite signals. GPS data can be accessed via the appropriate interface (e.g., NMEA sentences over UART).
• Software Functions: The module supports various software functions like FOTA for remote firmware updates, LBS for location services (even without GPS), and SSL for secure communication.

5.1 Application Scenarios

The A7670E module is versatile and can be integrated into various IoT and M2M applications:

Figure 9: Application Scenarios including Wisdom Energy (Charging piles, Base stations, Storage Servers) and Smart Industry (Remote Control, Data Monitoring, Monitor Consoles, Cloud Platforms).

Figure 10: Application Scenarios including Intelligent Agriculture (Agricultural irrigation, Greenhouses, Animal husbandry, Control centers, Cloud platforms) and Sharing Economy (Toy cars, Massage chairs, Vending machines, Toy machines, Coffee machines).

6. Maintenance

• Firmware Updates: Regularly check for and apply firmware updates provided by SIMCOM or your vendor. Firmware can be updated via USB or FOTA. This ensures optimal performance, security, and access to new features.
• Environmental Conditions: Operate the module within the specified operating temperature range of -40°C to +85°C. Avoid exposure to extreme temperatures, humidity, dust, or corrosive environments.
• Physical Inspection: Periodically inspect the board for any signs of physical damage, loose connections, or corrosion.
• Cleaning: If necessary, gently clean the board with a soft, dry, anti-static brush. Do not use liquids or abrasive cleaners.

7. Troubleshooting

If you encounter issues with your A7670E FASE Core Board, consider the following troubleshooting steps:

• No Power:
  • Verify the power supply is connected correctly and providing the required 5-16V DC to the board.
  • Check the power LED indicator on the board.
• No Network Connection:
  • Ensure the SIM card is correctly inserted and activated with a valid plan.
  • Check that the antenna is securely connected to the IPEX 1 interface.
  • Verify that the module's network bands (e.g., LTE-FDD B1/B3/B5/B7/B8/B20 for A7670E) are compatible with your local cellular network.
  • Check the network LED indicator for activity.
  • Send AT commands to query network registration status.
• No GPS Signal (FASE variant):
  • Ensure the GPS antenna is properly connected and has a clear view of the sky.
  • Verify that the module's GPS functionality is enabled via AT commands.
• Communication Issues (USB/UART):
  • Ensure correct drivers are installed on your host system (Windows, Linux, Android).
  • Verify baud rates and other serial port settings match the module's configuration.
  • Check physical cable connections.
• Module Not Responding:
  • Perform a power cycle (turn off and on).
  • Ensure the module is not in a low-power sleep mode if not intended.

8. User Tips

• Network Compatibility: Always confirm that the specific A7670X variant you are using supports the frequency bands of your target cellular network provider to ensure optimal connectivity.
• Antenna Selection: Choose an antenna appropriate for your application and environment. For robust performance, consider external antennas, especially in areas with weak signal strength.
• Power Stability: Provide a stable and clean power supply within the specified voltage range to prevent unexpected behavior or damage to the module.
• Documentation: Refer to the comprehensive SIMCOM AT Command Set documentation for advanced configuration and troubleshooting.
• Heat Management: While designed for a wide temperature range, ensure adequate ventilation, especially in enclosed applications, to prevent overheating and maintain long-term reliability.

9. Warranty and Support

For warranty information, technical support, or further assistance with your SIMCOM A7670E FASE Core Board, please contact your point of purchase or the official SIMCOM support channels. Ensure you have your product model and any relevant purchase details available when seeking support.