| Type | A90 | ||||
| GNSS System | 1408 channels | ||||
| Performance | Static measurement plane accuracy | ±(2.5mm + 0.5ppm)RMS | |||
| Static measurement elevation accuracy | ±(5mm + 0.5ppm)RMS | ||||
| RTK measurement plane accuracy | ±(8mm + 0.5ppm)RMS | ||||
| RTK measurement elevation accuracy | ±(15mm + 0.5ppm)RMS | ||||
| SBAS postion(typical) | 0.5m | ||||
| Initialization time | <10s | ||||
| Initialization reliability | >99.99 | ||||
| Environment | Working temperature | -30ºC~ +60ºC | |||
| Storage temperature | -40ºC~ +80ºC | ||||
| Water-proof & Dust-proof | IP68 | ||||
| Drop resistance | 2 meters at normal temperature | ||||
| Humidity | Anti-condensation | ||||
| Storage/data | Built-in storage | Onboard 8G, Support TF card expansion≥32G | |||
| Differential output | RTCM2.3, RTCM3.X, RTCM3.2, CMR, CMR+,RTCA | ||||
| Data safety | Data will be stored and backed up in three places after surveying | ||||
| Satellite Antenna | High performance 4 in 1 antenna: GNSS antenna/Bluetooth/WIFI/4G full netcom module is highly integrated | ||||
| Wireless communication | Bluetooth | Built-in V2.0 Class2 | |||
| WIFI | Directly connected to the handheld controller via wifi instead of bluetooth, support web UI wireless management: device upgrade, data download, parameter setting, station operation, etc. | ||||
| Communication protocol | PCC-EOT, TrimTalk 450S, TrimMark III,South,GeoTalk,GeoMark,Satel,HI-TARGET,ect. | ||||
| UHF radio | Bulit-in transceive | 0.5/2W | Effective distance≥5km | ||
| External transmit | 2/35W | Effective distance≥15km | |||
| Working Frequency | 410-470MHz | ||||
| Physical and Power Characteristics | Size | Φ15.6cm×7.6cm | |||
| Material | Lower cover is magnesium alloy, Top cover is polymer plastic | ||||
| Battery volume | 7.4V×3700mAH×2, Intelligent lithium battery, self power display | ||||
| User interface | 4 LED indicators, 1 button,voice | ||||
| Working time | >8 hours | ||||
| Auxiliary function | Electronic bubble, 2nd generation tilt survey function | ||||
