3.&?d NAVIGATE SETUP Menu
When you press
the1
NAVIGATE
SETUPlsoftkey
on NAVIGATION menu, the
NAVIGATE SETUP menu appears. On this menu, you can automatically or
manually correct the course and bearing data of the echosounder to mag-
netic bearings, change the display of ship’s position between L/L or
TDs
(if
a loran C is connected), and assign the appropriate Loran C GRI for
converting
TDs
entered as waypoints into L/L coordinates.
3A3.1.1 Magnetic Correction
0
NAVIGATE MENU
I
Notice that the Navigation displays show various
waypoint
bearings and ship’s course information.
This data can appear in
“Bue”
or
‘hlagnetic”
de-
grees. In general, when you are using your
echosounder data output to steer to a
waypoint
or
operate with your autopilot, you will usually want
this bearing information to be in ‘Magnetic”. This
is accomplished by adding a variation to the
‘True”
bearing data.
+
MAG
CORR.
AUTO
m
OFF
+
MAN
AUTO=+16
+I
DmY-E
UL
TD
+
LORANC CHAIN
!I%!50
If the “~~~“indicator is not already displayed on
the Navigate screen, the
V8010
can be pro-
PRESS MENU TO RETURN
grammed to automaticallyapplymagnetic variation values from an internal
D.M.A. variation table.
A.
Auto
Magnetic
W-iation
To set Magnetic Variation to Automatic press
-1
softkey
to
“AUTO”.
The
MAG
indicator will now appear in the middle of the Navigate-
Position title bar and all Course and Bearing readouts will be
in&gne&
B. Manual Magnetic Xwiation
If the automatic magnetic variation value
isnot
displayed
correctly
for
your
L/L location, the proper value can be input manually in the following
manner:
To enter the Magnetic correction values manually, press
them
softkey.
The “AUTO” selection will go to “OFF”. Enter the desired magnetic vari-
ation value with the numeric keys X, X. Press the A (up) direction key to
OPERATION 81
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