NorthStar MX500, Operator'S & Installation Manual

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84 Version 3.0
Operator’s Manual Auxiliary
of approach. Note for the plot example above, we turned off the cross-
track error lines, the active route, and track saving to keep the screen
from getting cluttered while drifting.
Grid Search
If you are attempting to search a given area, you can use the PLOT2
screen to define a known coordinate in your search pattern, then use
both the
PLOT1 and PLOT2 screens to view your progress and help
maintain your proper separation. You can also use the RTE1 screen’s
Insert New WPT feature in conjunction with the CFG1 Navigation,
WPT Pass Criterion: Distance to WPT (set the WPT Pass Distance:
to the smallest acceptable value) to create the search pattern you want
to follow. In the
RTE1 screen, highlight Insert New WPT and press
ENT to define the coordinates of the first waypoint. Then use the
Insert New WPT softkey to define subsequent range and bearing co-
ordinates from your original position. This technique allows you to
quickly define your search pattern, control the pattern separation,
and view your progress along the way. The CDU will prompt you to
turn at the predetermined waypoints you defined. This allows you to
pay more attention to the task at hand, rather than having to keep a
close eye on the GPS receiver.
Note: The PLOT screens are inactive if an MX antenna is not connected
or not detected.
Man Over Board
The Man Over Board function key shares the same key with the “Mark
or Event” function key. When depressed for 3 seconds, it activates a
number of automatic functions described below.
Most obviously, it brings up an MOB1 (Plot) screen. This is an auto-
matic scaling screen. The screen centers on half the distance between
your present position and the MOB position. In addition, the MOB
position is displayed in the upper left corner, so that you can quickly
read the coordinates to others who may be available to render assis-
tance. This plot screen also provides the vital bearing and distance
back to the MOB position, as well as your present course over ground.