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Suunto Ambit3 Vertical uses the Global Positioning System (GPS) to determine your current position. GPS incorporates a set of satellites that orbit the Earth at an altitude of 20,000 km at the speed of 4 km/s.
The built-in GPS receiver in Suunto Ambit3 Vertical is optimized for wrist use and receives data from a very wide angle.
Suunto Ambit3 Vertical activates GPS automatically when you select a sport mode with the GPS functionality, determine your location, or start navigating.
When you activate GPS for the first time, or have not used it for a long time, it might take longer than usual to get a GPS fix. Subsequent GPS starts will take less time.
To minimize GPS initiation time, hold the watch steady with GPS facing up and make sure you are in an open area so that the watch has a clear view of the sky.
Regularly synchronize your Suunto Ambit3 Vertical with Suunto app to get the latest satellite orbit data (GPS optimization). This reduces the time needed to get the GPS fix and improves track accuracy.
Grids are lines on a map that define the coordinate system used on the map.
Position format is the way the GPS receiver's position is displayed on the watch. All the formats relate to the same location, they only express it in a different way. You can change the position format in the watch settings under General » Format » Position format.
You can select the format from the following grids:
Suunto Ambit3 Vertical also supports the following local grids:
Some grids cannot be used in the areas north of 84°N and south of 80°S, or outside the countries that they are intended for.
When customizing sport modes, you can define the GPS fix interval using the GPS accuracy setting in Movescount. The shorter the interval, the better the accuracy during exercise.
By increasing the interval and lowering the accuracy, you can extend the battery life.
The GPS accuracy options are: