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Meridian
A line of longitude.
MGRS
Military Grid Reference System, used by
NATO countries. It is derived from the UTM
grid system but uses a different labeling
convention. It does not describe a point,
but rather an area.
Mil-radians
The military use mil-radians (short for milli-
radians) because breaking down a circle into
6400 mil-radians rather than 360 degrees
allows greater accuracy.
Nautical mile
Distance corresponding to one minute of arc
of latitude along any meridian, 1852m.
A mile (‘statute mile’) is 1609m.
OOI
An Object of Interest. A collective term for all
'points' of interest – POI, AOI, LOI Grids, IOI.
OOIs can include rich text and pictures.
Ordnance Survey (OS)
Mapping provider for Great Britain.
POI
A Point of Interest. A point on a map linked
to geo-referenced data (latitude/longitude),
displaying text or images with information
about that point (e.g. hotel, restaurant,
viewpoint, historical site, etc).
Primary screens
Six main screens that give you access to the
key GPS features: GPS MAP, PLANNING,
MAIN MENU, COMPASS, TRIP LOG, GPS
STATUS.
Rangender
The distance from your location to a given
point.
Route
A route is shown on the unit as a series
of transparent yellow or blue lines going
from waypoint to waypoint (with red arrows
between waypoints). A route may be planned
either on the unit or on a computer, and it may
also be a converted trail (known as a ‘track’).
Satellite
A GPS satellite used by the NAVSTAR
(Navigation Signal Timing and Ranging Global
Positioning System (GPS). The rst satellite
in the system, Navstar 1, was launched
February 22, 1978.
SD Card
Secure Digital card (1MB – 4GB). SDHC is
Secure Digital High Capacity (4GB – 32GB)
card, which has a different internal format.
In the manual these are also referred to as
mapcards since they are pre-loaded with
digital mapping.
Soft keys
Buttons with functions that vary depending on
the screen displayed.
24.00 Glossary
Target speed
The speed on which Estimated Time of Arrival
calculations are based if there is no GPS lock,
or there is a GPS lock and you are stationary.
Toggle function
Allows users to select which map they want
to view at a particular point without changing
the zoom level. Only possible if you have a
toggle-enabled map card with map layers of
the same area.
Toggleable maps
Map cards that have been toggle-enabled,
i.e. contain more than one scale or map type
of a particular area, and can therefore be
used with the toggle function. Toggle-enabled
map cards are available from our website.
Older maps can also be converted to enable
toggling via the Toggleable Map Service.
Total Ascents
Sum of all the positive changes in elevation.
Total Descents
Sum of all the negative changes in elevation.
Track
A track is a trail that has been converted. It
effectively becomes a route (.map le) which
can then be exported as a GPX or KMZ le
for viewing on online planning software, e.g.
Google Earth.
Trail
The path taken, leaving behind a snail trail.
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