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1.7
How to Set the CPA and TCPA Thresholds
The AR navigation system continuously monitors the predicted range at the Closest
Point of Approach (CPA) and predicted time to CPA (TCPA) of each AIS and TT tar-
get. When the predicted CPA of any AIS or TT becomes smaller than the preset CPA
threshold and its predicted TCPA less than the preset TCPA threshold, the symbol
and target information color are changed to the designated color (yellow, orange or
red).
1. Click the menu button to open the main
menu.
2. Click [CPA/TCPA].
3. Adjust the slider bar for [CPA Threshold] to
change the CPA threshold.
4. Adjust the slider bar for [TCPA Threshold] to
change the TCPA threshold.
5. Click an appropriate checkbox of [Attentional Color] to select the color for the at-
tentional target.
6. Close the main menu.
1.8
How to Customize the Graphics Object
1.8.1
How to show/hide the azimuth scale
The azimuth scale is shown at the top of the screen. You can use the scale to estimate
the bearing of ship's heading or a target. The azimuth scale rotates according to the
ship's movement.
1. Click the menu button to open the main
menu.
2. Click [Graphics Object].
3. Click [Azimuth Scale].
4. Check the checkbox for [Visible] to show the
azimuth scale. If you want to hide the scale,
remove the check mark from the checkbox.
5. Adjust the slider bar for [Text Scale] to change the size of the text on the azimuth
scale.
6. Close the main menu.
Azimuth scale
1. OPERATION
1-7
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