How To Show Or Hide The Grid; Zoom Display; How To Smooth Echoes (Distance); How To Smooth Echoes (Time) - Furuno NavNet TZtouch3 Series Operator's Manual

8. MULTI BEAM SONAR DFF-3D
8.4.2

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. Open the layers menu.
2. Select [ON] or [OFF] for [Grid].
8.4.3

Zoom display

The seabed echo can be zoomed.
1. Tap the cross section display to show the pop-up menu.
2. Select [ON] (zoom display) or [OFF] (normal display) for [Zoom].
[Zoom] selected
8.4.4

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. Open the [Cross Section] menu.
2. Tap [Echo Smoothing (Distance)].
3. Select [Low], [Medium] or [High]. The default setting is [Medium]. Select [Off] to
stop smoothing.
4. Tap the close button on the title bar to finish.
8.4.5

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. Open the [Cross Section] menu.
2. Tap [Echo Smoothing (Time)].
3. Select [Low], [Medium] or [High]. The default setting is [Medium]. Select [Off] to
stop smoothing.
4. Tap the close button on the title bar to finish.
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[Zoom] not selected