1. Introduction
The QIANXUN SE GNSS RTK System is a high-precision surveying instrument designed for accurate real-time kinematic positioning. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your QIANXUN SE system to ensure optimal performance and longevity.
2. What's in the Box
Your QIANXUN SE GNSS RTK System package typically includes the following components:
- QIANXUN SE GNSS RTK Receiver (Base and Rover units)
- Handheld Controller with Stylus
- Base Station Unit (for external radio, if applicable)
- Antennas (GNSS antenna, radio antenna)
- Cables (data cables, power cables)
- Chargers and Power Adapters
- Carrying Cases (two, for secure transport)
- User Documentation (this manual, quick start guide)


3. Setup Instructions
3.1 Initial Charging
Before first use, ensure all rechargeable batteries (receiver, controller) are fully charged using the provided chargers. The internal battery life for static operation is approximately 12 hours.
3.2 Assembling the Receiver
- Carefully remove the QIANXUN SE receiver from its carrying case.
- Attach the GNSS antenna to the designated port on the receiver.
- If using an external radio, connect the radio antenna to the base station unit.

3.3 Base Station Setup
- Place the base station unit on a stable, elevated surface with a clear view of the sky.
- Connect the necessary power and communication cables.
- Power on the base station. Observe the TX, RX, and WIFI indicators on the control panel.

3.4 Handheld Controller Setup
- Power on the handheld controller.
- Establish a connection between the controller and the RTK receiver, typically via WIFI or Bluetooth.
- Configure the survey project settings within the controller's software.

4. Operating Instructions
4.1 Powering On and Signal Acquisition
Press the power button on the QIANXUN SE receiver to turn it on. The system will begin acquiring GNSS signals (GPS L1 C/A, L2E, L2C, L5, and other constellations). Monitor the signal status on the handheld controller's LCD display.
4.2 Establishing RTK Connection
Ensure the base and rover units are communicating. This typically involves setting up a radio link or an internet-based correction service. The system supports transmitting speeds of 9.6Kbps or 19.2Kbps for data transfer.
4.3 Data Collection
Use the handheld controller's software to define points, lines, and areas for surveying. The system provides high-precision real-time coordinates. The typical working range is 5km, with optimal conditions extending to 8-10km.
4.4 Video Overview
5. Maintenance
- Cleaning: Regularly clean the receiver, controller, and accessories with a soft, dry cloth. Avoid abrasive cleaners or solvents.
- Battery Care: Fully charge batteries before storage and periodically during long storage periods to maintain battery health.
- Storage: Store the system in its original carrying cases in a cool, dry place, away from direct sunlight and extreme temperatures.
- Firmware Updates: Check the manufacturer's website for available firmware updates to ensure optimal performance and access to new features.
6. Troubleshooting
- No Power: Ensure batteries are charged and correctly inserted. Check power cables and adapters.
- No GNSS Signal: Verify the receiver has a clear view of the sky, free from obstructions. Check antenna connections.
- RTK Connection Issues: Confirm both base and rover units are powered on and within range. Check radio or internet connection settings.
- Controller Not Responding: Restart the controller. Ensure its battery is charged.
- Inaccurate Readings: Verify proper setup, calibration, and clear line of sight to satellites. Check for strong interference sources.
For more complex issues, refer to the detailed troubleshooting section in the complete product manual or contact customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | QIANXUN (also LETER) |
| Model Number | SE |
| Product Name | QIANXUN SE GPS RTK |
| Place of Origin | Mainland China |
| Channels | 220 Channels |
| GPS Support | L1 C/A, L2E, L2C, L5 |
| Display | LCD |
| Working Range | 5km typical, 8~10km optimal |
| Transmitting Speed | 9.6Kbps, 19.2Kbps |
| Internal Battery Life | Static 12 hours |
| Wireless Support | WIFI |
| Customized Support | OBM, ODM, OEM |
| Warranty | 3 years |
8. User Tips
- Always ensure a clear line of sight to the sky for optimal satellite signal reception.
- Regularly back up your survey data from the handheld controller to prevent loss.
- Keep the system's software and firmware updated to benefit from performance improvements and new features.
- When working in challenging environments, consider using an external radio for more robust RTK correction signal transmission.
9. Warranty and Support
The QIANXUN SE GNSS RTK System comes with a 3-year warranty from the date of purchase. This warranty covers manufacturing defects and ensures the product meets its specified performance standards under normal use.
For technical assistance, warranty claims, or inquiries regarding customized support (OBM, ODM, OEM), please contact your authorized QIANXUN dealer or the manufacturer directly. Ensure you have your product model and purchase details ready when seeking support.