Key Features :
1.BD990 trimble mainboad.
2.Color screen.
3.Revolutionary Tilt Survey With Built-in IMU
4.360° Omni-directional Antenna and multi-protocol Radio
5.Customer benefits from calibration free for tilt survey without centering. Once you reach the surveying points, immediately start the operation. Compared with bubble leveling, boost working efficiency by 20%
1.BD990 trimble mainboad.
2.Color screen.
3.Revolutionary Tilt Survey With Built-in IMU
4.360° Omni-directional Antenna and multi-protocol Radio
5.Customer benefits from calibration free for tilt survey without centering. Once you reach the surveying points, immediately start the operation. Compared with bubble leveling, boost working efficiency by 20%
Chcnav gps gnss receiver i90 gps navigation for surveying
| x12 specification | |
| Channels | 336 channels with all in view simultaneously tracked satellite signals |
| GPS | L1C/A, L2C, L2E, L5 |
| GLONASS | L1C/A,L1P, L2C/A, L2P, L3 |
| Galileo | E1,E5A,E5B |
| BeiDou | B1,B2 |
| SBAS | L1C/A,L5 |
| (QZSS, WAAS, EGNOS, GAGAN) | |
| Global correction service: | RTP(optional) 5 Min |
| GNSS Accuracies (1) | |
| SBAS differential | 0.5 m RMS |
| positioning accuracy | |
| Highprecision static | |
| Horizontal | 2.5 mm + 0.1 ppm RMS |
| Vertical | 3.5 mm + 0.4 ppm RMS |
| Baseline Length | ≤ 300 km |
| PostProcessed Kinematic (PPK) | |
| Horizontal | 8 mm + 1 ppm RMS |
| Vertical | 15 mm + 1 ppm RMS |
| RTK | |
| Horizontal | 8 mm + 1 ppm RMS |
| Vertical | 15 mm + 1 ppm RMS |
| Initialization time | < 5 s |
| Initialization reliability | > 99.9% |
| Network RTK | |
| Horizontal | 8 mm + 0.5 ppm RMS |
| Vertical | 15 mm + 0.5 ppm RMS |
| Initialization time | < 10 s |
| Initialization reliability | > 99.9% |
| GNSS+Inertial navigation | |
| Tilt Angle | 0-60 |
| Tilt precision | 10mm+0.7mm/ tilt(30' precision<2.5cm) |
| Hardware | |
| Dimensions (H×W) | 190mm*98.5mm |
| Weight | 1.25 kg ( |
| Environment | |
| Operating | '-45 °C to +75 °C (40°F to 167°F) |
| Storage | '-55 °C to +85°C (67°F to 185°F) |
| Humidity | 100% condensation |
| Dust and Waterproof | IP68, protected from temporary |
| immersion to depth of 1 m (unit floats) | |
| Shock and vibration | 3m (6.56 ft) pole drop onto concrete, |
| MILSTD810G | |
| LCD | 128x128dpi sunlight readable with function/accept 1.46 OLED |
| buttons | |
| Certifications and Calibrations | |
| FCC Part 15 (class B Device), FCC Part 22, 24, 90; CE | |
| Mark; CTick; Bluetooth EPL, IGS & NGS Antenna | |
| Calibration, MILSTD810G. | |
| Communications and Data Recording | |
| Serial | 2 x 7pin LEMO port (external power, USB data |
| download, USB update, RS232) | |
| Bluetooth® | BT 4.0 |
| compatible with Android, Windows Mobile and Windows | |
| WiFi | 802.11 b/g/n, access point mode |
| NFC | NFC flash even |
| UHF Radios (2) | Frequency: 450-470MHz |
| Channels:120 adjustable | |
| Transmitting power:2W | |
| agreement:CHC/TT450/Southradio/Transparent | |
| Working Range:3-5km typical, 8-10km optimal | |
| External UHF Radio(Standard) | Frequency: 450-470MHz |
| Channels:120 adjustable | |
| power:30W adjustable | |
| agreement:CHC/TT450/Southradio/Transparent | |
| Working Range:8~10km typical,15~20km optimal | |
| Electrical | |
| Power consumption | <3.2 W |
| Liion battery capacity | 2 × 3400 mAh, 7.4 V |
| Operating time | RTK UHF Base: 8 h |
| RTK Rover: 10 h | |
| Static: 10 h | |
| External power | 9 to 28V DC |