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• other colours may not appear with a built-in GPS. Should any of
these appear, this means a faulty operation of your device.
3.4.3 GPS data quality indicator
In the top left corner there is a satellite dish to show the quality of the GPS position.
Different colours represent different signal quality:
• black with a red cross means there is no connection with the GPS device.
This should never be the case if your device has a built-in GPS.
• red means the GPS is connected but no GPS position is available,
• yellow means 2D reception. A GPS position has been acquired, Navsure is
ready for navigation, but the GPS is using enough satellites for calculating the
horizontal position only. Elevation data is not provided, and the position error may
be significant.
green means 3D reception. The GPS receiver has enough satellites to
calculate altitude. Position is generally correct (yet it can still be inaccurate due to
different environmental factors). Navsure is ready for navigation.
3.4.4 Time synchronization
In the top right corner of the screen you have another button that leads to a new
screen where you can synchronize the clock of your device to the very accurate time
provided by the connected GPS.
Turn on the Auto Correction switch to let Navsure frequently check and correct the
internal clock of the device with the GPS time.
Below that button you will see the current values of the GPS and the device clocks.
You can check here whether any correction is needed. Tap the
manually synchronize the time.
button to
Below the device time you have hour and minute controls to manually correct the
time with or without a valid GPS time. It also gives you the chance to correct the time
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