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4. VIDEO SOUNDER OPERATION
4-17
4.10 Picture Advance Speed
The picture advance speed determines how quickly the vertical scan lines run
across the screen. When selecting a picture advance speed, keep in mind that a
fast advance speed will expand the size of the fish school horizontally on the
screen and a slow advance speed will contract it.
The advancement speed may be set independent of or synchronized with ship’s
speed.
4.10.1 Advancement independent of ship’s speed
1. Press the [MENU] key.
2. Press the A:SOUNDER MENU soft key.
3. Select PICTURE ADVANCE, and press the A:EDIT soft key to open the
picture advance window.
PICTURE ADVANCE
▲
2/1
1/1
1/2
1/4
1/8
1/16
STOP
▼
Picture advance window
4. Use the trackball to select speed desired. The fractions in the window denote
the number of scan lines produced per transmission. For example, 1/8
means one scan line is produced every eight transmissions. STOP freezes
the display and it is convenient for photographing the display.
5. Press the E:RETURN soft key followed by the [MENU] key to close the
menu.
Note: When using the plotter/sounder combination display, advancement of the
sounder picture may be temporarily interrupted while the plotter display is
being shifted or its display range is being changed.
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