Tt Display On/Off; How To Acquire And Track The Targets; Manual Acquisition - Furuno 1815 Operator's Manual

7. TT OPERATION
7.3

TT Display On/Off

You can turn the TT display on or off. The system continuously tracks TT regardless
of this setting.
1. Press the MENU/ESC key to open the menu.
2. Use the Cursorpad ( or ) to select [TT] and press the ENTER key.
3. Use the Cursorpad ( or ) to select [Display] and press the ENTER key.
4. Use the Cursorpad ( or ) to select [Off] or [On] then press the ENTER key.
5. Press the MENU/ESC key to close the menu.
7.4

How to Acquire and Track the Targets

Ten targets are acquired and tracked manually or automatically.
7.4.1

Manual acquisition

You can acquire up to ten TT. When the automatic acquisition ([Auto Acquisition] on
the [TT] menu) is set to on, you can manually acquire up to five targets.
1. Use the Cursorpad to put the cursor on the target to acquire.
2. Press the ENTER key.
The TT symbol changes over time as below. A vector which indicates the motion di-
rection of the target appears approximately one minute after acquisition.
At acquisition
Target number
River and Sea (Non-IEC system): An acquired target gets the youngest unused
number. When a target is lost and disappears from the number list, the next acquired
target takes the number of that lost target (for example, In a 5 target list, if the target
2 is lost, the next acquired target takes the number of target 2).
IEC and Russian-River (IEC system): An acquired target gets the youngest unused
number. When a target is lost and disappears from the number list, the next acquired
target takes the next sequential number until reaching a maximum 10. If the target
number reaches a maximum 10, the next acquired target takes the number of a pre-
viously lost target.
7-2
TT-Display options
01
01
1 min. after
acquisition
TT symbol
Vector
01
3 min. after
acquisition
Target number