14-3
EXT TRACK: If Extended Track is turned on, you will see an extended track line drawn ahead of your
present position in the direction of your present track. This can sometimes be useful to see just where
the aircraft would end up if the present heading were maintained. Alternatively you can dispense with
this map feature simply by selecting EXT TRACK to OFF.
AUTO ZOOM: Auto Zoom is a useful function to use as you approach your destination. When flying
the last leg of a flight plan or when flying a DIRECT TO, as soon as the distance to the destination
drops below ½ the scale bar setting, the unit automatically zooms in so that the destination is always
between ½ and one scale bars distance away. For example if you were using the unit when the zoom
level was set with a 15nm scale bar, once the distance to your destination dropped below 8nm (½ x
the scale bar) the unit would automatically zoom in to 8nm. When the RNG dropped below 4nm, the
unit would zoom in to 4nm. Etc. When the destination is reached or the flight plan /DIRECT TO is
cancelled, the unit will automatically revert to the 8nm zoom level. When flying, if you want to disable
Auto Zoom once it has started zooming in, simply press the ZOOM OUT key.
AUTO DECLUTTER: This unique feature makes the map more readable in areas of high data density
by removing unimportant icon labels. Each time the map is redrawn, the data displayed is built up in
layers starting with the least important data classes (towns etc) and building up through to the most
important data class (airports). If Auto Declutter is switched on, as the map is being built, if a higher
priority icon label is found to clash with a lower priority icon label already on the screen, the lower priority
icon label will be removed. This prevents icon label overlaps and clashes and hence declutters the map.
KEY BEEP: This allows you to select the beep that occurs when you press a key or move the joystick on
or off.
LOGGING RATE: This gives you the choice of how often your position is stored in memory for playback
in demo mode or to a PC. A setting of 000 switches the logging function off. A total of 2000 fixes are
stored in continuous wrap around memory (i.e. newest data overwrites oldest). To calculate total logging
time, divide 2000 by the logging rate per minute (30 sec logging rate = 2 per minute). This will give the
total logging time in seconds (i.e. 2000 points divided by 2 = 1000 minutes = 16 hours 40 mins).
POSITION REF: This is the geographical item used to describe your position to you in Map Mode.
Please refer to the Map Mode Screens Section of this Manual for more details.
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