Furuno NAVnet TZtouch2 - Page 231

8. MULTI BEAM SONAR DFF-3D
8-14
8.6.7 How to use the noise filter
If the seabed echo is displayed with undulations, use the noise filter to smooth the sea-
bed echo.
1. Select [Settings] on the home screen.
2. Select [Multibeam Sonar] - [3D Sounder History].
3. Select [Noise Filter].
4. Select [Low], [Medium] or [High] as required. The default setting is [Medium].
5. Select [Close] to close the menu.
8.6.8 How to use terrain shading
The thickness of the shading for the seabed terrain can be adjusted.
1. Select [Settings] on the home screen.
2. Select [Multibeam Sonar] - [3D Sounder History].
3. Select [Terrain Shading]. Drag the slider bar to adjust.
The default setting is 50. See the figure below for setting and resulting terrain
shading
4. Select [Close] to close the menu.
8.6.9 How to change the picture advance speed
The Picture Advance setting sets how quickly vertical scan lines move across the dis-
play. When viewing a seabed with sharp rises and falls such as a reef-bed or sub-
merged wreck, a fast advance speed helps to “smooth out” the seabed for easier
viewing. On the other hand, when viewing a smooth seabed with little to no undula-
tions, a slow advance speed helps to identify rises and falls.
You can change the picture advance speed with one of the following methods.
From the menu
1. Open the Home screen, then tap [Settings][Multi Beam Sonar].
2. Tap [3D Sounder History].
3. Tap [Picture Advance].
4. Select an advance speed to suit your requirements.
From the layers menu
1. Open the layers menu.
2. At [Picture Advance], tap the required speed.
Setting: 0 Setting: 50
Setting: 100