1. Introduction
The Hi-Target HTS-520L8 is a high-precision total station designed for professional surveying and construction applications. It features an 800m reflectorless range, a dual-axis compensation system (optional), and an English real-time operating system for efficient and accurate measurements. This manual provides essential information for the proper setup, operation, and maintenance of your HTS-520L8 Total Station.
2. Package Contents
Upon receiving your Hi-Target HTS-520L8 Total Station, please verify that all standard accessories are included and in good condition. The typical package includes:
- HTS-520L8 Total Station unit
- Hard carrying case
- 5-pin data line
- Battery charger
- Two (2) rechargeable batteries
- Charger line
- Cleaning tools
- Warranty card and flash drive (containing software/manuals)

Figure 2.1: HTS-520L8 Total Station and included accessories.

Figure 2.2: HTS-520L8 Total Station in its protective hard case.
3. Setup
3.1. Battery Installation and Charging
- Open the battery compartment cover on the side of the total station.
- Insert a charged battery, ensuring correct orientation.
- Close the battery compartment cover securely.
- To charge a battery, connect it to the battery charger using the charger line. Plug the charger into a suitable power outlet. The charging indicator will show the charging status.

Figure 3.1: Rear view of the HTS-520L8, indicating the battery compartment.
3.2. Mounting the Total Station
Mount the total station securely onto a stable tripod. Ensure the tripod is level and the instrument is firmly attached to prevent movement during operation.
4. Operation
4.1. Power On and Initial Screen
Press the power button to turn on the total station. The color screen will display the initial measurement interface, typically showing vertical (Vz) and horizontal (HR) angle readings.
Video 4.1: Demonstration of the HTS-520L8's color screen and English operating system, showing ease of measurement.
4.2. Navigating the English System
The HTS-520L8 features an English Real-time Operating System. Use the keypad and function keys (F1-F4) to navigate through menus and select options. The main menu typically includes:
- Surveying
- Stake
- Fileman (File Management)
- Program
- Options (Adjust, Config, Select CodeFile, Grid scale, Communication)
4.3. Measurement Modes
The HTS-520L8 supports various measurement modes:
- **Reflectorless Mode**: For measuring distances up to 800m without a prism.
- **Single Prism Mode**: For measuring distances up to 3000m (9,842ft.) under good conditions using a single prism.
- **Three Prisms Mode**: For measuring distances up to 6000m (19,685ft.) under good conditions using three prisms.
Select the appropriate mode from the menu based on your surveying requirements.

Figure 4.1: HTS-520L8 Total Station in active use by a surveyor.
5. Maintenance
5.1. Cleaning
Regular cleaning is crucial for maintaining the accuracy and longevity of your total station. Use the provided cleaning tools to gently clean the optical components (lens, reticle) and the instrument body. Avoid using abrasive materials or harsh chemicals.
5.2. Storage
When not in use, store the HTS-520L8 Total Station in its hard carrying case in a dry, dust-free environment. Ensure batteries are removed if storing for extended periods.
6. Troubleshooting
This section provides general guidance for common issues. For complex problems, contact authorized service personnel.
- **Instrument not powering on**: Check if the battery is properly installed and charged. Ensure the charger line is connected correctly if charging.
- **Inaccurate measurements**: Verify that the instrument is level and properly calibrated. Check for obstructions in the line of sight and ensure the correct measurement mode (prism/reflectorless) is selected.
- **Display issues**: Restart the instrument. If the problem persists, it may indicate a hardware issue.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | Hi-target |
| Model Number | Hi-Target HTS-520L8 |
| Reflectorless Range | 800M |
| System | Dual-axis (optional) |
| Accuracy | 3mm+2ppm |
| Measuring Time | 1.5s |
| Magnification | 30X |
| Operation system | English Real-time Operating System |
| Single Prism Range | 3000m (9,842ft.) under good condition |
| Three Prisms Range | 6000m (19,685ft.) under good condition |
| Reticle | Illuminated |
| Measuring Time (Fine/Quick/Tracking) | 1s/ 0.5s |
| DIY Supplies | Electrical |
| Electronic | No |
| High-concerned chemical | None |
| Origin | Mainland China, Jiangsu |
| Certification | CE |
| Customized support | OEM, ODM, OBM |
8. Warranty and Support
The Hi-Target HTS-520L8 Total Station comes with a 3-year warranty. For technical support, service, or warranty claims, please refer to the contact information provided with your purchase or on the official Hi-Target website. Always retain your warranty card and proof of purchase.
9. User Tips
- Ensure the instrument is properly leveled before starting any measurements to achieve maximum accuracy.
- Familiarize yourself with the English operating system and menu structure to quickly access different functions.
- Always use the appropriate measurement mode (reflectorless, single prism, three prisms) for the target distance and conditions.
- Keep the optical components clean and protected from dust and moisture.





