Bottom Echogram - Simrad ES70 - REFERENCE MANUAL REV A Reference Manual

E By default, the "ping time" and the depth range is shown in the bottom left side of
the echogram. In the bottom right corner, the "ping time" is the same as current.
This information can be changed using the options on the
dialog.
Echogram
F This is the lower end of the depth range. It is normally a few meters below the
bottom contour, depending on the chosen range.
Related topics
• Start Range on page 114
• Range on page 113
• Echogram on page 158

Bottom echogram

This echogram is related to the detected bottom. Stop depth (lower echogram boundary)
and vertical range are manually selected by the
menu. The echogram is only drawn for pings having a successful bottom detection.
Main
B This is the bottom.
Since the echogram is related to this bottom, it appears to be flat. Fishes close to
the bottom is then easy to see.
The range from the start depth above the bottom and down to some distance below
the actual bottom is defined with the
Example: In a bottom echogram, set the
will make the echogram start from 5 meters above the bottom. Set
meters plus 10 = 15 meters. The echogram will now show the area from 5 meters
above the depth, and down to 10 meters "below" the bottom. The bottom contour
will appear as a flat line.
This text identifies the transducer used to create the echogram.
C
This is the scope view.
D
This view presents individual colour lines. The colour and length of each line
reflects the received echo amplitude.
338106/A
Start Depth
This is the start depth of the echogram.
A
In a bottom echogram it is normally it is set
up with
Start Range
negative value. The value defines how many
meter above the bottom the echogram will
start.
button on the
Range
value to –5 meters. This
Start Range
Display views
tab in the
Horizontal Axis
and buttons on the
Range
set to a relative small
menu.
Main
to the 5
Range
45