4. Control Units
4-8
4.4.3 Using the scrollwheel
Items directly controlled by the scrollwheel
Selections can be made on the screen by pointing on the screen with the cursor then scrolling various options with
the scrollwheel. When you put the cursor over text or numeric, it turns green, purple or blue (depending on Palette in
use) to indicate that the scrollwheel can be used to scroll options available or change value of number. Selection is
confirmed by pushing the scrollwheel.
The following selections can be adjusted directly on the screen. See also the figure below.
1. Display mode and orientation of chart.
2. Operating mode
3. Length of speed vectors
4. Predictor - set predictor ON/OFF and time for predictor
5. Datum for output co-ordinates
6. Scale of displayed chart
7. Workstation mode (in case of multiple workstations)
1. 3.
5.
North Up RM
HDG 070.0°
SPD
(CALC)
1.8 Kt
SB
(POSN)
1.7 Kt
COG
(POSN)
045.1°
SOG
(POSN)
2.0 Kt
ECDIS only
Posn true
2.
6. & 7.
4.
The procedure below shows you how to change the presentation mode from North Up TM to Course Up RM.
1. Place the cursor on the text at the location shown by "1." in the figure above, and the color of the text changes
from current color to green.
2. Use the scrollwheel to scroll options until Course Up RM appears. As you scroll, the color of the text changes
to magenta, blue or green depending on the Palette in use.
3. Push the scrollwheel to confirm your selection, and the color of the text becomes green.
4. When you move the cursor away from the text, the color of the text returns to its original color.
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