Typical GPS Performance
    -         
    Position
    fix update rate: 1Hz, 5Hz, 10Hz. 
    -         
    Accuracy:
    3m Horizontal (RMC), 2.5m with DGPS(WAAS, Egnos, MSAS), 0.1m/s Velocity. 
    -         
    Time
    to First Fix: Cold start 35s, Hot start 1s. 
    -         
    Acceleration
    range: 4g maximum 
    -         
    Velocity
    range: 515m/s maximum 
    -         
    Altitude
    range: 18000m maximum 
    -         
    Output
    Protocol: NMEA-0183 
    -         
    NMEA
    Output: GGA, RMC, GSV, GSA 
      
    Interfaces 
    -         
    One
    USB 2.0 interface. Support two Microsoft Windows virtual COM ports. 
    -         
    Two
    RS232 interfaces. One RS232 interface, for external sub-meter GPS, supports
    auto-baud rate. Each RS232 interface is connected with a Microsoft Windows
    virtual COM port. 
      
    Software 
    Microsoft Windows virtual COM
    port device drivers, 32-bit and 64-bit. eeTerminal records GPS information
    and supports Google Earth. 
      
    Power 
    USB bus power, 37.5mA typical,
    43.5mA with DGPS active, 55mA maximum. 
      
    Mounting 
    External or internal with 4M4
    screws. 
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