Zoom; Zoom Reference - Furuno 1815 Operator's Manual

2. OPERATION
4. Press the MENU/ESC key to open the menu.
5. Select [Display], then press the ENTER key.
6. Select [Save Offcenter], then press the ENTER key. The message "Complete" ap-
pears.
7. Press any key to close the message window.
8. Press the MENU/ESC key to close the menu.
The indication "OFFCENT(M)" appears at the top left corner
Automatic off-center
The amount of automatic move is calculated according to speed of the ship. The max-
imum amount is 75% of the range in use. The formula to calculate automatic shift is
shown below.
If the offcenter speed setting is 15 knots and the speed of the ship is 10 knots, for ex-
ample, the amount of move at the stern of your ship will be 50% of the available display
area.
How to select offcenter speed
1. Press the MENU/ESC key to open the menu.
2. Select [Initial] sub menu in [System] menu, then press the EN-
TER key.
3. Select [Offcenter Speed], then press the ENTER key.
4. Select the speed to use, then press the ENTER key.
5. Press the MENU/ESC key to close the menu.
2.22

Zoom

The zoom function expands the length and width of a selected target as much as twice
its normal size, in the zoom window. You select the target to zoom with the zoom cur-
sor. The selected target is zoomed in the zoom window.
TT and AIS symbols can be displayed in the zoom window, but are not zoomed. You
can process TT and AIS targets that are in the zoom window, in the same method as
on the normal radar display.
2.22.1

Zoom reference

There are three types of zoom.
[Relative]: The zoom cursor is fixed to the range and bearing from your ship.
[True]: The zoom cursor is fixed to set geographical position.
[Target]: The zoom cursor is fixed to the zoomed AIS or TT target.
1. Press the MENU/ESC key to open the menu.
2. Select [Display], then press the ENTER key.
2-24
Speed of ship
Offcenter speed setting
x 0.75 = Amount of move (%)