Select “GPS Status…” menu item to check the GPS/GLONASS signal level. Then the screen displays information about the satellites, the signal quality, and the current position.
The circle shows the available satellites:
- gray color indicates unused satellites;
- green – satellites used for positioning.
- good signal is marked green;
- satisfactory signal – yellow;
- insufficient for use – gray.
Label “Time” shows that connection with satellites is settled and information about time is correct. If these labels are red, there is no GPS/GLONASS signal.
Attention, when the device is switched on for the first time or after its long downtime or when the device is started in a new geographical location, GPS/GLONASS system may require a long time for satellites searching and positioning.
Label “DOP/HDOP/VDOP” shows the positioning accuracy values (dilution of precision, DOP), horizontal (horizontal dilution of precision, HDOP) and vertical (vertical dilution of precision, VDOP) position. These values are interpreted as follows.
- 1 (Perfect) –> The highest level of positioning accuracy.
- 2-3 (Very good) –> Positioning accuracy enough for a highly dynamic system.
- 4 – 6 (Good) –> Normal positioning accuracy but errors possible while dynamic changes.
- 7 – 8 (Moderate) –> Unstable positioning.
- 9 – 20 (Low) –> Positioning impossible or inaccurate.
- 21 – 99 (Insufficient) –> Positioning impossible.
