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6. HISTORY MODE
6-3
6.3 How to Interpret, Set the History Display
6.3.1 Interpreting the history display
Color bar
Horizontal range
Depth
Scroll direction
Sync with ship speed
or KP transmission
Echo data inside
history marker
History marker
width*
History
marker
Distance from
own ship position
to bow (or stern)
Distance from own ship position to port (or starboard)
P: Port
S: Starboard
Own ship mark
Slant
range†
120°
35P
180
*Set on H-SLICE WIDTH
in DISPLAY SETTING
menu. See next page.
Own ship
mark
Trackball mark
HISTORY MARKER
† Automatically
changes with
tilt angle.
185m
156m
→
↓
How to interpret the history display