Furuno FCV-30 - Manual (Page 25)

1. OPERATIONAL OVERVIEW
1-15
1.7 Shifting the Display Range
You may shift the display in order to look at a shallower or deeper depth without changing
the current range.
Picture
Shift the start
depth to watch
shallow or deep
Shift principle
1. Click Setting.
2. Click Echo image.
3. Click ◄ or ► in the Shift box to choose shift value.
4. Click the OK button.