AvMap EKPIV series - Manual (Page 84)

84
APPendIx A - teRMS
This section explains the terms that you may find unfamiliar.
ACqUISItIon - Occurs when the EKP-IV locates a signal and collects data from a satellite.
AIRPoRt dAtABASe - A series of files of airport positions (described near the geographical center
of the airport and as defined by ICAO), with runways, frequencies (with sectors) and services
available information. Based on the
ARInC 424 - format for Jeppesen’s Database.
ALMANAC - Data on the general location and health of all satellites in the GPS constellation. Can
be collected from any available satellite in about 15 minutes.
ALt - ALTITUDE - Height above mean sea level. Density Altitude and the Altitude computed by a
GPS receiver may differ due to the effects of selective availability.
ARtCC - AIR ROUTE TRAFFIC CONTROL CENTER
AttentIon AReAS - Areas in which special attention by the mariner is required, because of
natural or man-made hazards, or sailing regulations and restrictions. Moreover a special symbol
(!) is placed inside the area selecting On’ or ‘Contour’ options. This is valid also for the categories:
FISHING FACILITY, MARINE FARM/CULTURE, MILITARY PRACTICE AREA, RESTRICTED AREA,
SEAPLANE LANDING AREA. When the area is small, it is identified only by the boundary.
AtIS - AUTOMATIC TERMINAL INFORMATION SERVICE - Recorded information about weather
and other conditions at an airport, periodically updated when conditions change.
AUtoMAtIC Mode - The mode of operation that uses D or 3D, depending on the number of
available satellites (preference is given to 3D; LAT, LON and ALT).
AUtoMAtIC SWItChInG - Flight Plans automatically switch from one leg to the next when the
Waypoint is reached.
AUto ZooM (mode) - The Auto Zoom mode is used to display fix position and destination
(Target) always visible on the map. The map is scrolled and zoomed automatically to have the
best view displaying fix and destination together on the screen. When this mode is active the
cursor is hidden.
AWoS - AUTOMATIC WEATHER OBSERVATION STATION
AZIMUth - Bearing measured clockwise from true or magnetic north.
BAthyMetRIC LIneS - Imaginary lines connecting points of equal water depth.
BeACon - An airport rotating beacon (white or white and green).
BISeCtoR - A straight line that divides an angle into two equal parts.
BRG - BEARING - The horizontal direction of a destination or Waypoint measured in relation to
true or magneticnorth.
CdI - COURSE DEVIATION INDICATOR - A graphical representation of Cross Track Error (XTE)
showing distance left or right of course. An airplane icon indicates the direction of relative motion,
toward or away from the intended Track.
CoG - COURSE OVER GROUND - Direction of the path over ground actually followed.
ConSteLLAtIon - The satellites in the Global Positioning System (GPS). Positioned in six orbital
planes approximately 11,000 NM above the earth.
CooRdInAteS - A Latitude and Longitude position that corresponds to a specific point on the
earth’s surface.
CoURSe - The planned line of travel: the line between your start position and the destination.
CtAF - Common Traffic Advisory Frequency - May be Unicom, Multicom or Tower Frequency.
CULtURAL FeAtUReS - Any man-made topographic feature as built-up area, buildings, roads, ...
CURSoR (mode) - In Cursor mode the screen is controlled by your movement of the cursor. When
in Cursor mode, a data field line will appear under the Data Window providing LAT/LON of the
cursor position. If a fix has been computed, a distance and bearing will also appear from the
position fix to the cursor. In this mode it is possible to scroll on the map such that the position fix
will not be displayed on the screen. When this occurs, you can quickly display your position by
activating Home mode.