Northrop Grumman Sperry Marine VisionMaster FT, User Manual

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Radar/Chart Radar User Guide Routes
65900010 8-25
To delete a critical point do the following:
1. In the Critical Points window navigate to the CP to be deleted using
the navigation buttons and click on the Delete button. The CP is
removed from the screen and list.
Or
1. Move the cursor over the CP to be deleted. As the cursor moves
over the CP the letters DEL CRTP are displayed below the cross
hair.
2. Right click on the CP and select Delete
Critical Point from the semi-
transparent window. The CP is
removed from the screen and list.
Although Critical points are associated
with a route they are not associated
with route track segments. When a
route track segment is moved or deleted, the critical points that
were on that route track segment remain in their original place.
The CP alert trigger defaults to distance, with the trigger being the proximity
of own ship to a CP, shown in metres. When own ship's proximity to a CP
is less than the distance shown an alert is raised.
To change the alert trigger to time, click on
the drop down arrow to the right of the field
and select
Time . The Ownship proximity
changes to displaying the trigger value in
minutes. To change the proximity time click in the field and move the
trackball left (to decrease) or right (to increase).
Each CP can be assigned a type of alert (Alarm or Warning) with the
default alert set to Warning. To change the alert setting to a Alarm click on
the
Generate Alarm radio button.
The operator can define the text to be displayed when an alert is raised
during route monitoring. To generate alert text click in the
Description
field, a screen keypad is displayed. Using the keypad, enter the required
alert message and when finished click the
OK button on the keypad.