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5. ECHO SOUNDER MODE
5-2
5.2 Typical Echo Sounder Displays
5.2.1 Echo sounder 1 display
This display shows the picture from an echo sounder on the right-hand side of
the display.
N
W
S
E
NUMERIC/GRAPHIC
DATA DISPLAY
Bottom
Depth of trackball mark
Distance from own
ship to trackball mark
Trackball mark
Color bar
Range scale
Fish estimate mark no. and beginning and
ending depths (dashed lines) of estimate
mark calculation
Speed sync
advance width data*
* Shows horizontal display width
(in meters). Appears when picture advance
speed is synchronized with ship
speed.
Trackball mark position reference mark (See below.)
30
60
26
Fish echo
2
1800m
800
Transmission line
0
Indications and markers on the echo sounder 1 display
Trackball mark position reference mark
The trackball mark position reference mark, a solid circle, is inscribed on the
ship’s track when the trackball mark is placed in the echo sounder display. Its
purpose is to show corresponding trackball mark position on the horizontal
display. It changes position with trackball mark position and tilt range, and
disappears when its position is no longer within the range of the echo sounder
display. This mark does not appear when the distance to the trackball mark is
longer than the track length. Own ship’s speed data is required for this function.
Track
Trackball mark
Trackball mark
position reference
mark
a
Trackball mark position reference mark