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11. GLOSSARY
Alarm point Position coordinates of a specific point on a route
or in the MyPoints function that you can use, for
example, to warn you about rocks and other
hazards.
Altitude difference (dif) Altitude difference between your current position
and the next waypoint in the unit of your choice.
Altitude to finish (atf) Total amount of ascent from the current position to
the last waypoint.
Bearing (bea) Compass direction from your current position to a
destination.
Cross Track Error (xte) This is the shortest distance from your current
location to the straight line connecting the
waypoints of the route.
Datum A datum is a mathematically defined reference
surface that approximates the shape of the earth,
and enables calculations such as position and
area to be carried out in a consistent and accurate
manner. Every map has a datum or metric grid.
You have to set your Suunto X9 to the correct
datum/grid for it to function properly with the map.
Distance from start (dfs) Traveled distance from the start point.
Distance to finish (dtf) Distance from the current location to the last
waypoint on the route (via each waypoint).
Distance to waypoint (dtw) Distance to either the next or the active waypoint
or to a My point depending on the chosen
navigation method.
Estimated Time of Arrival (eta) Estimated arrival time to the last waypoint based
on the current speed.
Estimated Time Enroute (ete) Estimated travel time to your current destination
based on the current speed.
Global Positioning System (GPS) Satellite tracking system.
Grid A grid system is a set of lines that cross each
