Furuno GP-3700F, Operator'S Manual

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11. ECHO SOUNDER
11-18
11.13 Picture Advance Speed
The picture advance speed controls how quickly the vertical scan lines move across
the screen. A fast advance speed expands the size of a school of fish horizontally on
the screen. A slow advance speed shortens the school of fish. Use a fast advance
speed to see the hard bottom. Use a slow advance speed to see the smooth bottom.
1. Press the MENU key to open the main menu.
2. Select [9. ECHO SOUNDER SETTING].
3. Select [8. PICTURE ADVANCE].
4. Select the picture advance speed. The options in the window indicate the number
of scan lines made per transmission. For example, [2/1] creates two scan lines per
one transmission and is the fastest advance speed. [1/16] creates one scan line
per 16 transmissions and is the slowest advance speed. [STOP PICTURE AD-
VANCE] stops picture advance, and is useful for taking a photo or screenshot of
the screen.
5. Press the DISP key to close the menu.
11.14 How to Review Past Picture
One past picture can be taken and reviewed.
11.14.1 How to set up to display past picture
1. Press the MENU key to open the main menu.
2. Select [0. SYSTEM SETTING].
3. Select [8. ECHO SOUNDER INITIAL SETTING].
Fast Slow
CAUTION
The picture is not refreshed when
picture advancement is stopped.
Maneuvering the vessel in this
condition can result in a dangerous
situation.