Furuno TZT2BB - How to Show or Hide the Grid; Zoom Display; How to Smooth Echoes (Distance); How to Smooth Echoes (Time)

8. MULTI BEAM SONAR DFF-3D
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8.5.2 How to show or hide the grid
The grid, which is useful for measuring the distance to a target, can be shown or hid-
den as follows.
1. Tap the cross section display to show the pop-up menu.
2. Select [Grid] to show the grid.
8.5.3 Zoom display
The seabed echo can be zoomed.
1. Tap the cross section display to show the pop-up menu.
2. Select [Zoom] to zoom the seabed echo. Select [Zoom] again to restore the nor-
mal display.
8.5.4 How to smooth echoes (distance)
If echoes are "disconnected" because of an undulating seabed, change the setting to
[Low], [Medium] or [High] as necessary. Smoothing is done in the range direction to
smooth the echo presentation.
1. Select [Settings] on the home screen.
2. Select [Multibeam Sonar] - [Cross Section].
3. Select [Echo Smoothing (Distance)].
4. Select [Low], [Medium] or [High] as required. The default setting is [Medium]. Se-
lect [OFF] to stop smoothing.
5. Select [Close] to close the pop-up menu.
8.5.5 How to smooth echoes (time)
If echoes are difficult to see because they appear "speckled," use the echo smoothing
feature to suppress the speckling by time.
1. Select [Settings] on the home screen.
2. Select [Multibeam Sonar] - [Cross Section].
3. Select [Echo Smoothing (Time)].
4. Select [Low], [Medium] or [High] as required. The default setting is [Medium]. Se-
lect [OFF] to stop smoothing.
5. Select [Close] to close the pop-up menu.
[Zoom] selected [Zoom] not selected
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