Model: G4




    GNSS Features Channels 1698
    GPS L1, L1C, L2C, L2P, L5
    GLONASS G1,G2,G3
    BDS B1I,B2I,B3L,B1C,B2A,B2B*
    SBAS L1C,L1A*
    NavIC/ IRNSS L5*
    MSSL - Band(Reserve)
    Positioning output rate 1Hz~20Hz
    Initialization time < 10s
    Initialization reliability >99.99%
    Positioning Precision Code differential GNSS Horizontal: 0.25 m + 1 ppm RMS
    Vertical: 0.50 m + 1 ppm RMS
    Static(long observations) Horizontal: 2.5 mm + 0.1 ppm RMS
    Vertical: 3 mm + 0.4 ppm RMS
    Static Horizontal: 2.5 mm + 0.5 ppm RMS
    Vertical: 3.5 mm + 0.5 ppm RMS
    Rapid static Horizontal: 2.5 mm + 0.5 ppm RMS
    Vertical: 5 mm + 0.5 ppm RMS
    PPK Horizontal: 3 mm + 1 ppm RMS
    Vertical: 5 mm + 1 ppm RMS
    RTK(UHF) Horizontal: 8 mm + 1 ppm RMS
    Vertical: 15 mm + 1 ppm RMS
    RTK(NTRIP) Horizontal: 8 mm + 0.5 ppm RMS
    Vertical: 15 mm + 0.5 ppm RMS
    RTK initialization time 2 ~ 8s
    SBAS positioning Typically < 5m 3DRMS
    BANDA-L Horizontal: 5-10cm (5-30min)
    Vertical: 10-30cm (5-30min)
    IMU Less than 10mm + 0.7 mm/° tilt to 30°
    IMU tilt angle 0° ~ 60°
    Hardware Performance Dimension 135mm(W)×135mm(L)×84.75mm(H)
    Weight 890g(battery included)
    Material Magnesium aluminum alloy shell
    Operating temperature -25℃~+65℃
    Storage temperature -35℃~+80℃
    Humidity 100% Non-condensing
    Waterproof/Dustproof IP68
    Shock/Vibration MIL-STD-810G(withstand 2meters pole drop onto the cement ground naturally)
    Power supply 6-28V DC, over voltage protection
    Battery Inbuilt 7.4V 6800mAh (8400mAh optional)) rechargeable Li-ion battery
    Battery life Typically 20h(static), 7h(Base+UHF) 1 9h(Rover+UHF), 20h(Rover+Bluetooth)
    Communications I/O Port 5-PIN LEMO external power port + RS232
    1 UHF antenna interface
    Internal UHF 2W Radio receiver and transmitter
    Frequency range 410-470MHz
    Communication protocol Farlink, Trimtalk, SOUTH, HUACE, Hi-target, Satel
    Communication range Typically 5km with Farlink protocol, up to 12km
    Bluetooth Bluetooth3.0/4.1standard,Bluetooth2.1+EDR
    NFC Communication Realizing close range (shorter than 10cm) automatic pair between receiver and controller(controller requires NFC wireless communication module else)
    Cellular 4G
    WIFI Modem 802.11 b/g standard
    WIFI hot spot Receiver broadcasts its hot spot form web UI accessing with any mobile terminals
    WIFI datalink Receiver can transmit and receive correction data stream via WiFi datalink
    Data Storage/Transmission Storage 4GB SSD internal storage standard, extendable up to 128GB
    Automatic cycle storage(The earliest data files will be removed automatically while the memory is not enough)
    Support external USB storage
    The customizable sample interval is up to 20Hz
    Data transmission Plug and play mode of USB data transmission
    Supports FTP/HTTP data download
    Data format Static data format:STH,Rinex2.01,Rinex3.02,etc.
    Differential data format:CMR,CMR+,RTCM2.1,
    GPS out put data format:NMEA0183,PJK plane coordinate,Binary code
    Network model support:VRS,FKP,MAC,Fully support NTRIP protocol
    Sensors Electronic bubble Controller software can display electronic bubble, checking leveling status of the carbon pole in real-time
    IMU Built-in IMU module, calibration-free and immue to magnetic interference
    Thermometer Built-in thermometer sensor, adopting intelligent temperature control technology, monitoring and adjusting the receiver temperature
    User Interaction Operating system Linux
    Buttons Single button
    Indicators 4LED indicators
    Web interaction With the access of the internal web interface management via WiFi or USB connection, users are able to monitor the receiver status and
    change the configurations freely
    Voice guidance It provides status and operation voice guidance, and supports Chinese/English/Korean/Spanish/Portuguese/Russian/Turkish
    Secondary development Provides secondary development package, and opens the OpenSIC observation data format and interaction interface definition
    Cloud service The powerful cloud platform provides online services like remote manage, firmware update, online register and etc

    *Reserve for future upgrade. Remarks: Measurement accuracy and operation range might vary due to atmospheric conditions, signal multipath, obstructions, observation time, temperature, signal geometry, correction format used and number of tracked satellites. Specifications subject to change without prior notice


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