Chapter 6: Customizing the Chartplotter
69
Setting up the
Data
8990
Saudi Arabia North (Obselete)
9940
US West Coast
9960
Northeast US
9970
North West Pacific (Obselete)
9980
Icelandic (Obselete)
9990
North Pacific
Note: Obselete chains do not transmit, but allow old TD positions to be
entered.
Map Datum and Fix Datum
The Map Datum is the geodetic datum to which position details are referenced
on the chartplotter display. You can select a datum to match paper charts that
you are using.
The Fix Datum is the geodetic datum to which position details received from
the GPS are referenced. You should select the same datum as your GPS uses.
Position Correction
If the displayed position does not agree with your known position, and you
cannot correct it by selecting the appropriate map datum or fix datum, you can
apply a position correction. The value of the current correction is displayed on
this menu.
➤
To apply a position correction:
1. Move the selection bar to the Position Correction option and press
ENTER
.
The chart is displayed.
2. Use the trackpad to move the cursor until the correct position is displayed in
the cursor readout box.
3. Press the
DONE
soft key to set the correction, press
NONE
to remove a
previously set correction, or press the
CLEAR
soft key to exit without
change.
Head Up Response
The Head Up Response controls the damping of the chart rotation when Head
Up mode is selected.
The default value is +/-15°, which means that the chart will only be rotated, and
the screen redrawn, if your vessel’s heading has changed by more than 15° in
either direction from the current head up display. /-10 for a more
frequent response, or +/-20 for a less frequent response.
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