Furuno tztl12f Marine GPS System User Manual


 
7. FISH FINDER (SOUNDER)
7-6
7.3.2 How to select an automatic fish finder mode
There are two types of automatic fish finder modes: [Auto Fishing] and [Auto Cruising].
[Auto Fishing] searches for schools of fish, and [Auto Cruising] tracks the bottom.
[Auto Cruising] uses a higher clutter removal setting than [Auto Fishing]. Do not use
[Auto Cruising] when your purpose is to find fish, because the clutter removal circuit
can erase weak echoes.
To select an automatic fish finder mode, tap the screen to open the pop-up menu,
tap [Adjust] then tap [Auto Fishing] or [Auto Cruising]
7.4 Manual Fish Finder Operation
Use the manual operation to see schools of fish and the bottom echo with a fixed gain
setting. The gain, range and range shift functions let you select the depth you can see
on the screen.
7.4.1 How to select the manual mode
Tap the screen to open the pop-up menu. tap [Adjust] then tap [Manual].
7.4.2 How to select the display range
Manual range setting
Pinch the fish finder screen or use the slider bar. The slider bar can be shown or hid-
den with [Show Scale Slider] in the [Settings] - [Sounder] menu.
How to turn on or off the auto range
The range can be selected automatically or manually. tap the screen to open the pop-
up menu, then turn [Auto Range] on or off.
7.4.3 How to shift the range
The basic range and range shift functions let you select the depth you can see on the
screen. This function is not available when [Auto Range] is active.
1. Open the home screen, then tap [Settings] - [Sounder].
2. Tap [Range Shift] to open the software keyboard.
3. Set the range then tap to confirm.
4. Tap the close button to finish.