1. Introduction
The QIANXUN Q300 is a high-precision GNSS RTK (Real-Time Kinematic) receiver designed for land surveying and mapping applications. It integrates advanced GNSS technology with an intelligent IMU (Inertial Measurement Unit) for tilt compensation, providing accurate and reliable positioning data. This manual provides essential information for the proper setup, operation, and maintenance of your Q300 GNSS RTK receiver and its handheld data controller.
2. Package Contents
Upon opening the protective case, verify that all components are present and undamaged:
- QIANXUN Q300 GNSS RTK Receiver Unit
- Handheld Data Controller
- Charger and USB Type-C Cable
- Radio Antenna (for SMB interface)
- Mounting Accessories (e.g., bracket for controller)
- Protective Hard Case
- Quick Start Guide (if included)
3. Setup Guide
3.1 Charging the Devices
Before initial use, ensure both the Q300 receiver and the handheld data controller are fully charged.
- Q300 Receiver: Connect the provided USB Type-C cable to the receiver's Type-C port and then to the charger. The integrated indicator will show charging status.
- Handheld Data Controller: Use its dedicated charger or USB cable to charge the removable 5200 mAh battery.
3.2 Assembling the System
- Attach the radio antenna to the SMB interface on the Q300 receiver if using radio corrections.
- Mount the Q300 receiver onto a survey pole or tripod as required for your application.
- Secure the handheld data controller to the survey pole using the provided mounting bracket.
- Power on both the Q300 receiver and the handheld data controller using their respective power switches.
4. Operating Instructions
4.1 Power On/Off
- To power on the Q300 receiver, press and hold the power switch until the indicators light up.
- To power off, press and hold the power switch until the device shuts down.
- Follow the standard power procedures for the Android-based handheld data controller.
4.2 Indicator Lights
The Q300 receiver features integrated indicators for battery status and satellite/signal reception. Refer to the device's specific LED patterns for detailed status information (e.g., solid green for good signal, blinking red for low battery).
4.3 Connecting to the Handheld Controller
The Q300 receiver supports Bluetooth and Wi-Fi connectivity for communication with the handheld data controller. Ensure both devices have Bluetooth/Wi-Fi enabled and pair them according to the instructions in the controller's software application.
4.4 Web User Interface (Web UI)
The Q300 receiver can be configured and monitored via a web user interface accessible from a PC or mobile device. Connect to the receiver's Wi-Fi network and navigate to the specified IP address in your web browser to access advanced settings and diagnostics.
4.5 RTK Operation and Tilt Compensation
The Q300 supports RTK surveying using its built-in receiving radio (415 MHz – 460 MHz) with TrimTalk450S, TrimMark3, or transparent transmission protocols. The integrated IMU allows for tilt compensation up to 60°, improving efficiency by eliminating the need for precise leveling of the pole. The tilt compensation accuracy is 8 mm + 0.3 mm/°tilt (accuracy < 2 cm within 30°).
4.6 Data Output
The Q300 supports NMEA output, allowing integration with various surveying software and systems. Consult your surveying software documentation for configuring NMEA data input.
5. Maintenance
- Cleaning: Wipe the receiver and controller with a soft, damp cloth. Avoid harsh chemicals or abrasive materials.
- Storage: Store the device in its protective hard case when not in use, in a dry environment within the specified operating temperature range.
- Battery Care: For optimal battery life, avoid fully discharging the batteries frequently. If storing for extended periods, charge the batteries to about 50-70%.
- Environmental Protection: The Q300 receiver and handheld controller are rated IP67 for waterproof and dustproof protection. While robust, avoid prolonged submersion or exposure to extreme conditions beyond the specified operating temperature of -25℃ to +60℃.
- Impact Resistance: The receiver is designed to be resistant to falls from a height of 2 meters. However, always handle the equipment with care to prevent damage.
6. Troubleshooting
This section addresses common issues you might encounter with your QIANXUN Q300 GNSS RTK receiver.
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low or depleted battery; faulty power switch. | Charge the device fully. Ensure the power switch is pressed correctly. |
| No satellite signal reception | Obstruction (buildings, trees); poor sky visibility; incorrect GNSS settings. | Move to an open area with clear sky view. Check GNSS settings in the controller software. |
| RTK corrections not applied | Radio link issue; incorrect radio frequency/protocol; base station not transmitting. | Verify radio antenna connection. Check radio settings (frequency, protocol). Ensure base station is operational. |
| Inaccurate positioning | Poor satellite geometry (PDOP); multipath interference; IMU not calibrated. | Wait for better satellite conditions. Avoid reflective surfaces. Perform IMU calibration if available in software. |
| Handheld controller not connecting to receiver | Bluetooth/Wi-Fi off; pairing issue; out of range. | Ensure Bluetooth/Wi-Fi is on for both devices. Re-pair devices. Move controller closer to receiver. |
7. Specifications
7.1 QIANXUN Q300 GNSS RTK Receiver
| Feature | Detail |
|---|---|
| Model | QIANXUN Q300 GNSS RTK |
| GNSS Performance | |
| Satellite System | BDS/GPS/GLONASS/GALILEO/QZSS/SBAS |
| Channels | 1520 channels |
| NavIC Support | L5, L2, L1 |
| Static Accuracy (Horizontal) | ± (2.5+0.5×10-6D) mm |
| Static Accuracy (Vertical) | ± (5+0.5×10-6D) mm |
| RTK Accuracy (Horizontal) | ± (8+1×10-6D) mm |
| RTK Accuracy (Vertical) | ± (15+1×10-6D) mm |
| XStar Accuracy (Horizontal) | ± 2.5 cm |
| XStar Accuracy (Vertical) | ± 15 cm |
| Initialization Reliability | 99.90% |
| GNSS + IMU | |
| Tilt Slope | 0~60° |
| Tilt Compensation Accuracy | 8 mm + 0.3 mm/°tilt (accuracy < 2 cm within 30°) |
| IMU Rate | 200 Hz |
| Global High-Precision Service | |
| Satellite Base | Supports XStar L-band satellite-based service. Time of initialization < 15 min. |
| User Interaction | |
| Operating System | Linux |
| Buttons | Power switch |
| Indicators | Battery, satellite/signal integrated |
| Web UI | Support PC and mobile web pages |
| Wireless Communication | |
| Bluetooth/Wi-Fi | Supported |
| Radio Mode | Built-in receiving radio |
| Radio Frequency Band | 415 MHz – 460 MHz |
| Transmitting Power | 0.5W, 1W, 2W adjustable |
| Transmitting Speed | 9.6Kbps, 19.2Kbps |
| Working Range | 5km typical, 8~10km optimal |
| Radio Protocol | TrimTalk450S / TrimMark3 / Transparent transmission |
| NMEA Output | Supported |
| Physical Characteristics | |
| Size | Φ132 mm × 66.5 mm (with bottom nuts) |
| Material | Magnesium aluminum alloy |
| Weight | 880g ± 10g |
| Ports | 1 Type-C interface (for power supply and data transmission), and 1 SMB interface (for radio antenna) |
| Electrical Characteristics | |
| Battery | Built-in 6800mAh lithium-ion battery |
| Battery Life | The rover station can work for 14 hours |
| External Power Supply | 5V DC |
| Environmental | |
| Operating Temperature | -25℃~+60℃ |
| Waterproof and Dustproof | IP67 |
| Fall-resistance | Resistant to fall from a height of 2 m |
7.2 Handheld Data Controller
| Feature | Detail |
|---|---|
| Operating System | Android 9 |
| CPU | 8-core 2.0 GHz processor |
| Memory | 3GB RAM + 32GB ROM |
| Network | 4G Full Netcom |
| Battery | 5200 mAh removable battery |
| Camera | 13 Million Auto Focus Camera |
| Waterproof and Dustproof | IP67 |
8. User Tips
- For optimal performance, ensure the receiver has a clear line of sight to the sky to maximize satellite acquisition.
- Regularly update the firmware of both the receiver and the handheld controller to benefit from the latest features and performance improvements.
- Familiarize yourself with the surveying software on the handheld controller to efficiently manage projects and collect data.
- When working in challenging environments, utilize the IMU tilt compensation feature to maintain accuracy without needing to perfectly level the survey pole.
9. Warranty and Support
The QIANXUN Q300 GNSS RTK receiver comes with a 1-3 year warranty on hardware. We provide global remote technical support and long-term after-sales service to ensure your continued satisfaction and operational efficiency.
For technical assistance, warranty claims, or service inquiries, please contact your authorized dealer or the manufacturer's support team. Refer to the contact information provided at the time of purchase or on the official QIANXUN website.
