Interphase Twinscope Operation Manual page 62

Center
B
y pressing the "CENTER" soft key, your current
position will be moved to the center of the track plot
display and the track line dots will be shifted
accordingly.
Reset
The "RESET" soft key in the menu restarts your
track plotting by placing your present position in the
center of the track plot screen and erasing all track
line dots
Note: All other past information, including track
line dots and marks, will be lost when you Reset
the Track Plot.
Note: The Twinscope has both a full screen and a
split screen track plotter. Both of these Views are
updated automatically regardless of what display
screen is in use. Although these two track plot views
are similar, the user may select different ranges for
each of these views. For example, the full screen
track plotter can be set up for a 64 mile range, while
the split screen track plotter can be set up for 1/4
mile! This allows you to get two different instant
views of your boat's movement by selecting the two
different track plot views. For example, you could
select the range of 64 miles for the full screen to
show far off waypoints, etc.; but select a range of
only 1/4 mile on the split screen track plotter to
show more detail of your boat's movement.
Track Plotter Symbols
+
W
+
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Starting Position
Way point selected in
navigation receiver
Center of plot screen