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Chapter 7 - Creating Avoidance Points
Erasing an avoidance point
Changing the display of coordinates
Page 7-14
The 961 returns to the CHART screen, showing the new
radius of the avoidance point and its position data in the
CURSOR INFO BAR.
At the AVOIDANCE POINTS screen, you can permanently
erase an avoidance point from the 961's database:
1. At the AVOIDANCE POINTS screen, press the CURSOR
PAD up or down to select the desired avoidance point.
2. Press the EDIT key.
3. Press the ERASE AVOID key.
4. After you press the ERASE AVOID key, you're asked to
confirm this action before you proceed by pressing the
YES key (to cancel the erasure, press the NO key).
If you erase from the
point that's still in the future trip, you'll still see the yellow and red
avoidance-point alarms until you manually clear these alarms at the
ALARMS
screen.
When you're viewing the AVOIDANCE POINTS screen, you
can view the position of avoidance points in three different
ways:
•
distance and bearing
•
lat/lon
•
loran time differences (TDs)
Distance and bearing (DISTANCE/BRG) is always shown (often
the most useful way, since it may be easier to visualize "three
miles north" than the digits of lat/lon or TDs). These two col-
umns are completely empty if the 961 has no position fix.
You can switch between lat/lon and TDs by pressing the
TDS,LT/LN key. When you use TDs, three fields appear on the
screen: GRI, TD#1, and TD#2. GRI defines the particular geo-
graphical group of loran stations, and TD#1 and TD#2 repre-
NOTE:
AVOIDANCE POINTS
961 Operations and Reference Manual Rev. D
screen an avoidance
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