Furuno 1823C manual Picture Advance Speed, Advancement independent of ship’s speed

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 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 observing an echo.

5.Press the 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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