Simrad ME70 - REV C, Руководство оператора

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Operational procedures
Choosing start depth
Purpose
This procedure explains how to control the vertical start
range (start depth) in the echogram. The start range
is controlled by
Start Range
on the
Main
menu.
Example 3 Start Range in a surface related echogram
In a surface echogram, set the
Start Range
value to 0 meters. This will make the
echogram start from the sea surface (provided that the transducer offset has been
defined). Set
Range
to the current depth plus 20 meters. The echogram will now
show the area from the sea surface and down to 20 meters “below” the bottom.
The bottom contour is easily detected when the depth changes.
Procedure
The following methods may be used.
1
Method 1
a Click [ + ] or [ - ] to adjust the start range manually.
2
Method 2
a
Click the middle of the button, hold the mouse button depressed, and drag
sideways.
3
Method 3
a Click the middle of the button to open it.
b Type any depth value from the keyboard.
c Click
Apply to all
if you wish to implement your chosen depth value to all
current echograms of the same type. This choice will also apply to the other
methods.
4
Method 4
a Place the cursor over the middle part of the button, and use the control wheel
on the mouse (or trackball) to choose range value.
Choosing the vertical range
Purpose
This procedure explains how to set the vertical range;
the distance from the sea surface and down to the
bottom. This vertical range is controlled by
Range
on the
Main
menu.
Example 4 Start Range and Range in bottom related echogram
In a bottom echogram, set the
Start Range
value to –5 meters. This will make the
echogram start from 5 meters above the bottom. Set
Range
to the 5 meters plus
10 = 15 meters. The echogram will now show the area from 5 meters above the
depth, and down to 10 meters “below” the bottom. The bottom contour will appear
as a flat line.
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