Furuno FR-1500 - Manual (Page 70)

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2.5.3 Changing plot symbol mark
The plot symbol for a target may be changed after acquiring the target. This feature is available on
the R-type radar.
1. Place the cursor on the plot symbol mark you wish to change.
2. Press the [ENTER/SELECT] key successively while pressing and holding down the [HL
OFF] control to select plot symbol mark desired.
Plot symbols
Note:
Changing the plot symbol mark while a target is under acquisition (target marked
with dashed square) will cause all plot symbol marks above to be shown with dashed lines.
3. To inscribe a smaller plot symbol mark, place the cursor on any plot symbol, then press the
[ENTER/SELECT] key. Mark size can be alternately selected to large or small by repeating
this step.
2.6 Terminating Tracking of Targets
When the ATA has acquired 20 targets, no more acquisition occurs unless targets are lost. Should
this happen, cancel tracking of individual targets or all targets by the procedure described below.
2.6.1 Individual targets
Place the cursor (+) on a target which you do not want to be tracked any longer by operating the
trackball and press the [CANCEL/CLEAR] key.
2.6.2 All targets
All targets can be canceled from the PLOT menu as follows.
1. Press [MENU], [7], [7] to show the PLOT menu.
2. Press the [2] key twice to select ERASE.
3. Press the [ENTER/SELECT] key.
4. Press the [MENU] key.