Operation Manual

6. RADAR
6-6
6.7 How to Measure the Range and Bearing from
Your Ship to a Target
You can measure the range or bearing to a target by the following four methods.
6.7.1 How to display the range rings
Use the fixed range rings to get a rough estimate of the range to a target. These rings
are the concentric solid circles about your ship.
To display the range rings, select [Rings] from the RotoKey menu. To hide the range
rings, deselect [Rings].
The interval is displayed at the bottom left-hand corner of the screen. To measure the
range with the range rings, count the number of rings between the center of the screen
and the target. Check the range ring interval and estimate the distance of the echo
from the inner edge of the nearest ring.
6.7.2 How to set the number of the range rings
1. Select [Menu] on the menu icon bar to open the main menu.
2. Select the [Radar] - [Rings Interval] menu.
3. Select the number. [Auto] automatically selects the number of rings according to
the range scale.
4. Select [Close] to exit the menu.
Range measurement Bearing measurement
Fixed range rings Yes No
Ruler Yes Yes
VRM (Variable Range
Marker)
Yes No
EBL (Electronic Bear-
ing Line)
No Yes
Auto
1
2
3
4
Rings Interval
Auto