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For centimeter-level RTK accuracy, NS-HP-GN2 requires much better operating condition than
conventional meter-level accuracy GPS receiver:
* Under open sky without interference
* Signal level over 37dB/Hz
* 8 or more satellites above 15 degree elevation angle with good satellite geometry
If above condition is not met, NS-HP-GN2 will not get centimeter-level accuracy RTK solution.
Without base station data input, NS-HP-GN2 works like a normal GNSS receiver.
When used with a RTCM 3.x Virtual Reference Station (VRS) RTK base, one rover NS-HP-GN2 is needed.
If one wishes to setup a local base station to work with rover, then two NS-HP-GN2 will be needed,
one for base and another for rover.
Default NMEA output baud rate is 115200.
Rover expects RTCM 3.x or SkyTraq raw measurement data at input baud rate of 115200
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