Quectel BG95-M3 MINI PCIE Module User Manual

1. Introduction

The Quectel BG95 is a series of multi-mode Low-Power Wide-Area (LPWA) modules designed to support LTE Cat M1, Cat NB2, and EGPRS communication standards, with integrated Global Navigation Satellite System (GNSS) capabilities. This module is compliant with 3GPP Release 14 specifications, offering robust and efficient connectivity for a wide range of Machine-to-Machine (M2M) and Internet of Things (IoT) applications.

Key features include ultra-low power consumption, achieved through integrated RAM/flash and an ARM Cortex A7 processor supporting ThreadX, significantly reducing power leakage in PSM (Power Saving Mode) and eDRX (extended Discontinuous Reception) modes. The BG95 also incorporates hardware-based security features, utilizing the Cortex A7 TrustZone engine for trusted applications.

Its compact SMT form factor (23.6mm × 19.9mm × 2.2mm) and LGA package make it suitable for size-constrained applications and high-volume automated manufacturing. The module offers pin-to-pin compatibility with other Quectel LTE Cat 4, LTE Cat M1/Cat NB1/EGPRS, NB-IoT, UMTS/HSPA, and GSM/GPRS modules, facilitating easy migration and design integration.

2. Product Overview

Figure 1: BG95-M3 MINI PCIE Module (Front View)

Figure 2: BG95-M3 MINI PCIE Module (Back View with SIM Card Slot)

The module features a standard MINI PCIE interface for integration into compatible host systems. It includes a SIM card slot for network access and connectors for external antennas.

3. Setup and Installation

3.1. Physical Installation

1. Insert SIM Card: Locate the SIM card slot on the back of the BG95-M3 module (refer to Figure 2). Carefully insert a compatible Nano-SIM card into the slot until it clicks into place. Ensure the SIM card is correctly oriented.
2. Install Module: Insert the BG95-M3 MINI PCIE module into an available MINI PCIE slot on your host device (e.g., industrial PC, development board). Secure the module with screws if required by your host system.

3.2. Antenna Connection

The module requires external antennas for cellular and GNSS functionality. Connect the appropriate antennas to the U.FL connectors on the module. Typically, 'MAIN' is for the primary cellular antenna, and 'GNSS' is for the GPS/GNSS antenna.

Figure 3: Module with GPS Antenna and 4G FPC Antenna

Figure 4: Module with GPS Antenna and 4G PCB Antenna

Figure 5: Module with Antennas and USB Adapter for testing/development

3. Connect Cellular Antenna: Attach the 4G FPC or PCB antenna to the 'MAIN' U.FL connector.
4. Connect GNSS Antenna: Attach the GPS/GNSS antenna to the 'GNSS' U.FL connector.

3.3. Software and Drivers

After physical installation, install the necessary drivers and software for the BG95-M3 module on your host operating system. Refer to the Quectel official website or your system integrator for the latest drivers and AT command documentation.

4. Operating Instructions

4.1. Powering On and Network Registration

1. Ensure the module is correctly installed and antennas are connected.
2. Power on your host device. The module will typically power on with the host.
3. Monitor the module's status indicators (LEDs, if available) and system logs for network registration status.
4. Use AT commands via a serial interface to configure network settings, check signal strength, and initiate data connections.

4.2. Data Communication

The BG95-M3 supports various data communication modes:

• LTE Cat M1: Offers maximum data rates of 588Kbps downlink and 1119Kbps uplink. Ideal for applications requiring moderate data throughput.
• LTE Cat NB2: Optimized for ultra-low power consumption and extended coverage, suitable for small data packets.
• EGPRS (2G): Provides fallback connectivity in areas without LTE-M or NB-IoT coverage.

Configure the desired communication mode and APN settings using AT commands as per your network operator's requirements.

4.3. GNSS Functionality

The integrated GNSS supports GPS, GLONASS, BeiDou, Galileo, and QZSS constellations. To utilize GNSS:

1. Ensure the GNSS antenna is properly connected and has a clear view of the sky.
2. Activate GNSS functionality using specific AT commands.
3. Retrieve location data (NMEA sentences) via the module's serial interface.

4.4. Power Saving Modes

Leverage the module's ultra-low power consumption features (PSM and eDRX) for battery-powered applications. These modes allow the module to enter deep sleep states, significantly extending battery life. Configuration of PSM and eDRX is done via AT commands.

5. Maintenance

• Environmental Conditions: Operate the module within its specified temperature and humidity ranges. Avoid exposure to extreme temperatures, direct sunlight, moisture, and corrosive environments.
• Cleaning: Keep the module and its connectors clean and free from dust. Use a soft, dry cloth for cleaning. Do not use liquid cleaners or solvents.
• Firmware Updates: Periodically check for firmware updates from Quectel to ensure optimal performance, security, and compatibility. Follow the provided instructions carefully during firmware updates.
• Antenna Integrity: Ensure antennas are securely connected and undamaged. Damaged antennas can degrade performance.

6. Troubleshooting

6.1. No Power/Module Not Detected

• Verify that the host device is powered on and the MINI PCIE slot is active.
• Ensure the module is correctly seated in the MINI PCIE slot.
• Check for any physical damage to the module or the slot.

6.2. No Network Registration

• Confirm the SIM card is correctly inserted and active with a valid subscription.
• Ensure the cellular antenna is properly connected and positioned for good signal reception.
• Check network coverage in your location.
• Verify APN settings and other network configurations using AT commands.
• Check the module's firmware version; an outdated firmware might cause connectivity issues.

6.3. GNSS Not Acquiring Fix

• Ensure the GNSS antenna is connected and has a clear, unobstructed view of the sky.
• Verify that GNSS functionality is enabled via AT commands.
• Allow sufficient time for the module to acquire satellite signals, especially during the first fix or after a long period of inactivity.

6.4. Communication Errors

• Check the serial port settings (baud rate, data bits, parity, stop bits) on your host device.
• Ensure that the correct drivers are installed.
• Consult the Quectel AT Command Manual for specific error codes and their meanings.

7. Specifications

7.1. General Specifications

• Part Number: BG95-M3 MINI PCIE
• Item Type: Bluetooth/Wi-Fi/Wireless Module (Note: Wi-Fi for positioning is not supported on BG95-M3, only on BG95-MF)
• Form Factor: SMT, LGA package
• Dimensions: 23.6mm × 19.9mm × 2.2mm
• Processor: ARM Cortex A7 (supporting ThreadX)
• Power Consumption: Ultra-low (optimized PSM and eDRX)
• Origin: Mainland China

7.2. Frequency Bands and Certifications (BG95-M3)

Figure 6: Frequency and Certification Overview for BG95 Series (including M3)

For the BG95-M3 model, the following specifications apply:

*Note: Certifications marked with an asterisk are subject to planning or specific regional availability.

8. Warranty and Support

8.1. Limited Warranty

This product comes with a 12-month manufacturer's limited warranty for defective items, excluding items damaged or misused after receipt. Accessories included with the module typically carry a 3-month warranty. In case of a defective item, it must be reported and returned within the warranty period. The original package and accessories should be included. Please provide the original order number for warranty claims.

8.2. Technical Support

For technical assistance, detailed AT command documentation, or further inquiries, please contact the seller or refer to the official Quectel support resources. Providing your module's Part Number (BG95-M3 MINI PCIE) and any relevant error messages will help expedite support.

9. User Tips

• Antenna Placement: For optimal cellular and GNSS performance, ensure antennas are placed away from metal obstructions and have a clear line of sight (especially for GNSS).
• Power Supply: Provide a stable and clean power supply to the host device to ensure reliable operation of the module.
• Development Kits: Consider using a development kit or adapter board (like the USB adapter shown in Figure 5) for initial testing and software development to simplify connectivity and debugging.
• AT Command Reference: Keep the Quectel AT Command Manual handy. It is an invaluable resource for configuring and controlling the module's various functionalities.