The i83 Pro GNSS receiver is more than a universal 336-channel multi-band IMU-RTK GNSS receiver; it is the perfect GNSS RTK survey tool that any surveying, construction, or mapping professional has come to expect. Built-in connectivity modules such as Wi-Fi, Bluetooth, UHF, and a 4G modem can be used reliably, efficiently, and conveniently in a variety of application scenarios to meet any job site configuration.
The i83 Pro GNSS features CHCNAV's third-generation GNSS antenna and the latest iStar algorithm to increase all GNSS signals tracking efficiency by 30%. It also integrates a premium 200Hz AUTO-IMU sensor, which greatly improves the usability and reliability of RTK GNSS surveys. The i83 Pro offers a range of enhanced and versatile GNSS functionalities, including optional Trimble RTX and OmniSTAR support, as well as the optional Trimble MAXPro Positioning Engine, to provide extended capabilities.
| SPECIFICATIONS | |
| GNSS Performance (1) | |
| Channels | 336 channels |
| GPS | L1 C/A, L2E, L2C, L5 |
| GLONASS | L1 C/A, L2 C/A, L3 CDMA* |
| Galileo | E1, E5A, E5B, E5AltBOC, E6* |
| BeiDou | B1, B2, B3 |
| QZSS | L1 C/A, L1 SAIF,L1C, L2C, L5, LEX* |
| NavIC/ IRNSS | L5* |
| SBAS | L1 C/A, L5 |
| MSS L-Band(2) | OmniSTAR*, Trimble RTX* |
| GNSS Accuracies (3) | |
| Real time kinematics (RTK) | Horizontal: 8 mm + 1 ppm RMS Vertical: 15 mm + 1 ppm RMS Initialization time: 99.9% |
| Post-processing kinematics (PPK) | Horizontal: 3 mm + 1 ppm RMS Vertical: 5 mm + 1 ppm RMS |
| High-precision static | Horizontal: 2.5 mm + 0.1 ppm RMS Vertical: 3.5 mm + 0.4 ppm RMS |
| Static and rapid static | Horizontal: 2.5 mm + 0.5 ppm RMS Vertical: 5 mm + 0.5 ppm RMS |
| Code differential | Horizontal: 0.4 m RMS Vertical: 0.8 m RMS |
| Autonomous | Horizontal: 1.5 m RMS Vertical: 2.5 m RMS |
| Position/ atitude update rate | 1 Hz, 5 Hz, 10 Hz, 20 Hz and 50 Hz(4) |
| Time to first fix (5) | Cold start: < 45 s Hot start: < 10 s Signal re-acquisition: < 1 s |
| IMU update rate | 200 Hz |
| Tilt angle | 0~60° |
| RTK tilt-compensated | Additional horizontal pole-tilt uncertainty typically less than 8 mm + 0.7 mm/° tilt |
| Hardware | |
| Size (LxWxH) | Φ152 mm x 78 mm (Φ5.98 in ×3.07 in) |
| Weight | 1.15 kg (2.54 lb) |
| Front panel | 1.1'' OLED Color Display 2 LED, 2 physical buttons |
| Temperature | Operating: -40°C to +65°C (-40°F to +149°F) Storage: -40°C to +85°C (-40°F to +185°F) |
| Humidity | 5% to 95% R.H. non‑condensing, at +60 °C |
| Ingress protection | IP68(6) (according to IEC 60529) |
| Waterproof and breathable membrane | Prevent water vapor from entering the device under harsh environments such as sun exposure and sudden heavy rain |
| Drop | Survive a 2-meter pole drop |
| Tilt sensor | Calibration-free IMU for pole-tilt compensation. Immune to magnetic disturbances. E-Bubble leveling |
| Communication | |
| SIM Card Type | Nano-SIM card |
| Network modem | Integrated 4G modem. LTE-FDD: B1/B2/B3/B4/B5/B7/B8/B12/B13/B18/B19/B20/B25/B26/B28 LTE-TDD: B38/B39/B40/B41 WCDMA: B1/B2/B4/B5/B6/B8/B19 GSM 850/900/1800/1900 MHz |
| Wi-Fi | 802.11g, access point mode |
| Bluetooth® | v4.2 |
| Ports | 1 x 7-pin LEMO port ( RS-232) 1 x USB Type-C port (external power, data download, firmware update) 1 x UHF antenna port (TNC female) |
| Built-in UHF radio | Standard Internal Tx/Rx: 410 - 470 MHz Transmit Power: 0.5 W, 1W Protocol: CHC, Transparent, TT450, Satel Link rate: 9,600 bps and 19,200 bps Range: Typical 3 km, up to 8 km with optimal conditions |
| Data formats | RTCM 3.x, CMR, CMR+, SCMR, RTD HCN, HRC, RINEX 2.11, 3.02 NMEA 0183 output NTRIP Client, NTRIP Caster |
| Network RTK | VRS,FKP, MAC |
| Data storage | 8 GB internal memory |
| Electrical | |
| Power consumption | Typical less than 4.15 W (depending on user settings) |
| Li-ion battery capacity | Built-in non-removable battery 9,900 mAh, 7.2 V |
| Operating time on internal battery (7) | UHF/ 4G RTK Rover: up to 20h UHF RTK Base: up to 14 h Static: up to 20 h |
| Compliance with Laws and Regulations | |
| International standards | IEC 62133-2:2017+A1, UN Manual Section 38.3 |
*All specifications are subject to change without notice.
(1) Compliant, but subject to availability of GLONASS, Galileo, QZSS and IRNSS commercial service definition. GLONASS L3 CDMA, Galileo E6, QZSS LEX and IRNSS L5 will be provided through future firmware upgrade. There is no public GLONASS L3 CDMA or Galileo E6 ICD. The current capability in the receivers is based on publicly available information. As such, CHCNAV cannot guarantee that these receivers will be fully compatible.
(2) Both RTX and OmniSTAR service can be supported by purchasing activation codes. RTX and OmniSTAR accuracies depend on correction service chosen. Trimble CenterPoint RTX provides <4cm horizontal accuracy 95% of the time with initializations of less than 30 minutes.
(3) Accuracy and reliability are determined under open sky, free of multipaths, optimal GNSS geometry and atmospheric condition. Performances assume minimum of 5 satellites, follow up of recommended general GPS practices.
(4) Standards-compliant with a default output rate of up to 20 Hz. Optional 50 Hz raw observation and positioning result output is available with an activation code purchase.
(5) Typical observed values.
(6) Splash, water, and dust resistant and were tested under controlled laboratory conditions with a rating of IP68 under IEC standard 60529.
(7) Battery life is subject to operating temperature.
