4. VIDEO SOUNDER OPERATION

4.10Picture 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.

4.10.1Advancement independent of ship’s speed

1.Press the [MENU] key.

2.Press the SOUNDER MENU soft key.

3.Select PICTURE ADVANCE, and press the 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 cursor pad to select speed desired. The functions 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 observing an echo.

5.Press the RETURN soft key followed by the [MENU] key to close the menu.

Note: For the C-MAP specification unit, 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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Furuno 1722C, 1753C, 1742, 1733C, 1752 Picture Advance Speed, Advancement independent of ship’s speed, Picture advance window