Suunto X9 Instruction Manual

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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