NorthStar 972, Быстрый старт и справочное руководство

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Reference section 7 — Echo sounding
Changing the depth settings Northstar 972
•
Color bar #2 is similar but with fewer
colors, to aid visibility under some
conditions.
•
Color bars #3-8 are additional
variations with different background
colors.
•
Color bar #9 uses a monochrome scale,
ranging from dark to bright.
Selecting the color bar (hue)
To select the color bar:
1. On the Echo Sounder screen, press
Picture
.
2. Press
Hue
.
3. Press the cursor pad up or down to select the
color bar desired, or use the keypad to manu-
ally enter the number of the color bar.
4. Press
Return
to go back to the Echo
Sounder screen.
Changing the depth settings
You can adjust the shallowest and deepest
echoes to be shown on the
Echo Sounder
screen. In automatic mode, the echo
sounder sets these values based on its
current environment. However, you can
manually override these auto values for
your specific needs at any time. There are
two depth settings:
•
shift (how far below the surface the
echo sounder picture starts)
•
range (the depth covered by the echo
sounder picture from the top of the
screen to the bottom of the screen)
Setting the picture’s shift (starting
depth)
The shift setting adjusts the depth of the
top edge of echoes pictured on the
Echo
Sounder
screen. You can “shift” the entire
picture up and down to start at the surface
of the water, 20 feet down, or any other
depth you choose.
To set the shift value:
1. At the Echo Sounder screen, press
Depth
.
2. Press
Shift
.
Press the cursor pad up or down to shift
the starting depth, or use the keypad to
enter the digits of the desired depth (press
ENTER when done).
3. Press
Return
to go back to the Echo
Sounder screen.
Range
displayed echoes
Shift