Simrad CA42, Руководство пользователя

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CA4
2/50
/52 Radar operation Chapter 8
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screen, the quickest way is:
1-9
Use one of the shortcut keys to quickly go to a different range:
Press [1] = 24nm [2] = 12 nm [3] = 6 nm
[4] = 3 nm [5] = 1.5 nm [6] = 0.75 nm
[7] = 0.50 nm [8] = 0.25 nm [9] = 0.125 nm
ZOOM
Or you may use the IN/OUT
[ZOOM]
keys to go to a different range
- each press will increase/decrease the range scale with 50 percent.
Or from the active control panel: use the cursor key to highlight the
current range scale, then adjust the range scale with approx. 10 percent
+/-
each time you press the +/- keys.
Table for range rings and displayed range
Range (nm) 0.125 0.25 0.5 0.75 1.5 3 6 12 24 36 48
Range rings
2 2 2 3 6 6 6 6 6 4 6
Interval
0.0625 0.125 0.25 0.25 0.25 0.5 1 2 4 8 8
Targets:
The shape of the target has a direct affect on the image displayed.
A flat surface at right angles reflects a good image. Flat surfaces at
shallow angles reflect very poor images. A concave surface will
concentrate the reflective energy and display an image larger than
normal. Convex surfaces will scatter the energy and display week
images. A conical surface may not display any image.
The texture of the target surface also controls the amount of reflective
signal, and therefore the image displayed. A smooth surface is a good
reflector, while rough surfaces tend to break up the reflection.
Composition - materials such as metal and water are good reflectors.
Others, such as wood and fiberglass are poor reflectors.