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3. PLOTTER OPERATION
3-9
3.3 Shifting the Display
The plotter display can be shifted as below.
1. Use the trackball to locate the cursor at a screen edge. The screen shifts in
the direction opposite of cursor location.
2. To turn off the cursor, press the CENTER soft key. This also returns the own
ship marker to the screen center.
3.4 Chart Scale
Chart scale (range) may be selected with the [RANGE -] or [RANGE +] key. The
[-] key shrinks the chart range (image is expanded); the [+] key expands the cart
range (image is shrunk). The available ranges are as below.
Charts scales
nm 0.125 0.25 0.5 1 2 4 8 16 32 64 128 256 512 1024 2048
km 0.23 0.46 0.93 1.85 3.70 7.41 14.8 29.6 59.3 119 237 474 948 1896 3742
sm 0.144 0.29 0.58 1.15 2.30 4.60 9.21 18.4 36.8 73.7 147 295 589 1178 2356
Note: When the display is expanded or shrunk beyond the range of the chart
card in use the message “NO CHART” appears, along with the appropriate
chart icon. See the illustration on the next page for details.