Furuno FAR-2107(-BB) - Manual (Page 180)

4. AIS OPERATION
4-6
4.5 How to Sleep Targets
4.5.1 Sleeping an individual target
You may "sleep" an AIS target as below when the screen becomes filled with
targets, which might prevent important radar and AIS displays from being
identified. Note that targets that have been activated automatically cannot be
"slept."
1. With the cursor inside the effective display area, roll the scrollwheel to
display "TARGET CANCEL / EXIT" in the guidance box.
2. Use the trackball to put the cursor on an activated AIS target symbol.
3. Push the left button. The activated target symbol is replaced with the
sleeping target symbol.
Sleeping target
4.5.2 Sleeping all targets
1. Right-click the AIS DISP box to open the AIS TARGET menu.
[AIS TARGET MENU]
1 SLEEP ALL TRGTS
NO/YES
2 ACTIVATE ALL TRGTS
NO/YES
3 AUTO DISP MESSAGES
OFF/ON
4 [RECEIVED MESSAGES]
5 [TRANSMIT MESSAGE]
6 [VOYAGE DATA]
7 [STATIC DATA]
8 [AIS ALM MESSAGES]
AIS TARGET menu
2. Select 1 SLEEP ALL TRGTS.
3. Select YES to sleep all AIS targets.
4. Push the right button to close the menu.