1. Introduction
The CHCNAV I93 GNSS RTK Receiver is a state-of-the-art surveying instrument designed for high-precision positioning and data collection. It integrates advanced GNSS technology with innovative features like video photogrammetry and inertial measurement, making it suitable for various field applications including road surveys, construction, and mapping. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your I93 receiver to ensure optimal performance and longevity.
2. Product Features
The CHCNAV I93 RTK receiver is engineered with several key features to enhance surveying efficiency and accuracy:
- Video Photogrammetry Technology: Integrates CHC video photogrammetry for video measurement and 3D modeling.
- High-Precision 3D Coordinates: Quickly and efficiently obtains high-precision 3D coordinates from live videos, enabling 'What You See Is What You Get' (WYSISIWYG) measurement while walking.
- AR Real-time Navigation: Supports Augmented Reality (AR) real-time navigation and immersive 3D modeling, improving efficiency by up to 50%.
- Upgraded Anti-Glare Design: Features an upgraded anti-glare design of the central pole, combined with following and lofting functionalities. The lofting base image rotates with the user, allowing navigation to be viewed from a first-person perspective without needing to manually identify direction and distance.
- Hyperinertial Navigation: Supports non-invasive hyperinertial navigation without initialization, enabling point-to-point measurement with reliable accuracy.
- Robust Design: The accompanying HCE700 controller features an ultra-rugged design, meeting IP67 and MIL-STD-810H standards.
3. Setup Guide
Follow these steps to set up your CHCNAV I93 GNSS RTK Receiver and controller:
- Unboxing: Carefully remove all components from the protective carrying case. Verify that all items listed in the packing list are present.
- Receiver Inspection: Inspect the I93 receiver for any visible damage. Ensure the protective film is intact if applicable.
- Controller Preparation: Power on the LandStar 8 controller. It runs on Android 12 and should display the home screen.
- Software Launch: Tap the 'LandStar 8' application icon on the controller to launch the data collection software.
- NFC Connection (if applicable): The controller supports NFC. If your receiver also supports NFC, you may be able to establish a quick connection by tapping the devices together.
- Mounting: Attach the I93 receiver to a survey pole using the provided mounting accessories. Ensure it is securely fastened.
- Initial Power-On: Press the power button on the I93 receiver to turn it on. Observe the display for status indicators.
4. Operating Instructions
The CHCNAV I93 offers advanced operational capabilities for precise surveying:
- GNSS Performance: The receiver supports 1408 channels across multiple constellations including BDS (B1I, B2I, B3I, B1C, B2a, B2b), GPS (L1C/A, L1C, L2C, L2P, L5), GLONASS (G1, G2, G3), Galileo (E1, E5a, E5b, E6), and QZSS (L1, L2, L5, L6).
- Real-time Kinematic (RTK): Achieve horizontal accuracy of 8 mm + 1 ppm RMS and vertical accuracy of 15 mm + 1 ppm RMS, with a typical initialization time of 10 seconds and reliability of 99.9%.
- Inertial Measurement Unit (IMU): Utilize IMU technology for point-to-point measurements. The system automatically corrects coordinates based on tilt direction and angle, supporting up to 60 degrees tilt measurement with an accuracy of 2 cm, eliminating the need for perfect centering.
- Visual Survey and Stakeout: Use the integrated camera for visual stakeout and survey tasks. The system supports video photogrammetry for efficient data acquisition.
- 3D Modeling: Leverage the collected data for 3D modeling applications.
- LandStar 8 Software: The LandStar 8 data collection application for Android devices provides a user-friendly interface for field operations. It features simplified project and coordinate system management, CAD base map rendering, and cloud integration for efficient field-to-office collaboration.
5. Maintenance
Proper maintenance ensures the longevity and accuracy of your CHCNAV I93 GNSS RTK Receiver:
- Cleaning: Regularly clean the exterior of the receiver and controller with a soft, damp cloth. Avoid abrasive cleaners or solvents.
- Storage: Store the equipment in its protective carrying case when not in use. Keep it in a dry, temperature-controlled environment.
- Battery Care: For optimal battery life, avoid fully discharging the battery frequently. Charge the battery regularly, even during periods of non-use.
- Firmware Updates: Periodically check for and install firmware updates for both the receiver and the controller to ensure you have the latest features and performance enhancements.
- Cable Inspection: Inspect all cables for signs of wear or damage before and after each use. Replace damaged cables immediately.
6. Troubleshooting
Here are some common issues and their solutions:
- No GNSS Signal: Ensure the receiver has a clear view of the sky. Check antenna connections. Verify that the correct satellite constellations are enabled in the software.
- Inaccurate Positioning: Check the RTK correction source (base station or network RTK). Ensure the survey pole is plumb and the IMU is calibrated if using tilt compensation. Verify the coordinate system settings in LandStar 8.
- Controller Not Responding: Restart the LandStar 8 application or the controller itself. Ensure the battery is charged.
- 'Test Equipment' Designation: Some units may be labeled as 'test equipment' for internal purposes or specific market regulations. This typically does not affect the functionality or accuracy of the device for its intended use.
- Regional Compatibility: The CHCNAV I93 is designed for global use, supporting multiple GNSS constellations. However, specific network RTK services or local regulations might vary by country. Consult local surveying authorities or your dealer for region-specific information.
7. Specifications
Detailed technical specifications for the CHCNAV I93 GNSS RTK Receiver:
| Category | Parameter | Value |
|---|---|---|
| GNSS Performance | Channels | 1408 channels |
| GPS | L1C/A, L1C, L2C, L2P(Y), L5 | |
| BDS | B1I, B2I, B3I, B1C, B2a, B2b | |
| GNSS Accuracies | Real-time kinematic (RTK) H/V | H: 8 mm + 1 ppm RMS, V: 15 mm + 1 ppm RMS |
| Post-processing kinematic (PPK) H/V | H: 2.5 mm + 0.5 ppm RMS, V: 5 mm + 0.5 ppm RMS | |
| IMU tilt compensated | Additional horizontal pole-tilt uncertainty typically less than 10 mm + 0.7 mm/° tilt | |
| Environments | Operating Temperature | -40°C to +65°C (-40°F to +149°F) |
| Ingress Protection | IP67 (according to IEC 60529) | |
| Drop | Survive a 2-meter pole-drop | |
| Vibration | Comply with ISO 9022-36-08 and MIL-STD-810G - 514.6-Cat.24 | |
| Electrical | Power consumption | UHF RTK Rover w/o camera: Typical 2.8 W; Visual Stakeout/Visual Survey: Typical 4 W |
| Li-ion Battery Capacity | Built-in non-removable battery 9,600 mAh, 7.4 V | |
| Operating time on internal battery | UHF RTK Rover w/o camera: up to 24 h; Visual Stakeout/Visual Survey: up to 24 h; UHF RTK Base: up to 16 h static; up to 36 h | |
| Hardware | Dimensions (W×H) | 152 mm × 81 mm (5.98 × 3.19 in) |
| Weight | 1.15 kg (2.54 lb) | |
| Front panel | 1.1" OLED Color Display, 2 LED, 2 physical buttons | |
| Sensors | Tilt sensor | Calibration-free IMU for pole-tilt compensation, immune to magnetic disturbances, E-Bubble leveling |
| Cameras | Global shutter with 2 MP & 5 MP | |
| Field of view | 75° | |
| Communication | SIM card type | Nano-SIM card |
| Network modem | Integrated 4G modem: TDD-LTE, FDD-LTE, WCDMA, EDGE, GPRS, GSM | |
| Wireless connection | NFC for device touch pairing, Wi-Fi (IEEE 802.11a/b/g/n/ac, access point mode), Bluetooth® (5.0 and 4.2+EDR, backward compatible) | |
| Ports | 1 x 7-pin Lemo port (RS-232), 1 x USB Type-C port (external power, data download, firmware update), 1 x TNC female (UHF antenna) | |
| Built-in UHF radio | Tx/Rx | 410-470 MHz |
| Transmit Power | 0.5 W to 2 W | |
| Data formats | RTCM 2.X, RTCM 3.X, CMR input/output, NMEA 0183, HCN, HRC, RINEX, CHCNAV output, NTRIP Client, NTRIP Caster | |
| Data storage | 8 GB internal memory, Support 128 GB external expansion | |
| Compliance and Laws and Regulations | International standards | NGS Antenna Calibration, IEC 62133-2:2017+A1, IEC 62368-1:2014, UN Manual Section 38.3 |
8. User Tips
- Verify Components: Upon receiving your package, ensure all components, including the base and rover units (if applicable to your purchase), are present and accounted for.
- Software Familiarization: Spend time familiarizing yourself with the LandStar 8 software interface. Its customizable nature allows for tailoring to specific project needs.
- Field Conditions: Always ensure a clear line of sight to the sky for optimal GNSS signal reception. Be aware of potential obstructions like tall buildings or dense foliage that can affect accuracy.
- Data Backup: Regularly back up your survey data from the controller to prevent loss.
9. Warranty and Support
The CHCNAV I93 GNSS RTK Receiver comes with a 1-Year Warranty. For technical support, service, or warranty claims, please contact your authorized CHCNAV dealer or the manufacturer's support channels. Ensure you retain your proof of purchase for warranty validation.
