Furuno GP-3300 - Manual (Page 108)

11-11
The track and memory capacity includes current or loaded track and
current or loaded marks.
• Current track: Position input by navigator
• Current mark: Mark input through keyboard
• Loaded track/mark: Track/mark loaded from a memory card
Note: Waypoints loaded from a memory card are erased if they share
the same waypoint numbers as current waypoints.
Track
Memory
Mark
Memory
Postion data
from navigator Memory
card data
External event
mark
Marks entered
thru keyboard
Figure 11-15 Contents of track and mark memories
Track memory
When the track memory becomes full oldest track is deleted.
New Track
Current Track
600 pts of
current track are erased.
3000 pts
1600 pts
3000 pts
1000 pts
Erased
600 pts
+ =
Figure 11-16 How track points are deleted