History Display (Target Past Position) - Furuno FR-8045 Operator's Manual

3. ARPA OPERATION
3.7

History Display (target past position)

This radar can display time-spaced dots (maximum ten dots) that mark the past posi-
tions of any tracked ARPA target. You can evaluate actions of a target by the spaces
in between the dots. Below are examples of dot spacing and target movement.
(a) Ship turning
You can select the number of history dots to display and the time interval to display
the history dots.
1. Press the MENU key to open the menu.
2. Use
3. Use
4. Use
turn off the history display.
5. Press the ENTER key.
6. Use
7. Use
8. Press the MENU key to close the menu.
3-6
(b) Ship running
straight
Target movement and history display
or to select [Target] and press the ENTER key.
or to select [History Dots] and press the ENTER key.
History Dots options
or to select number of history dots to display (5 or 10) or select [Off] to
or to select [History Interval] and press the ENTER key.
History Interval options
or to select the time interval and press the ENTER key.
(c) Ship reduced
speed
Off
5
10
15s
30s
1min
2min
3min
6min
12min
(d) Ship increased
speed