Simrad EQ60 - Manual (Page 34)

Simrad EQ60
22
857-164342 / Rev.C
Whenever the cursor is located within the Echogram field, a
small yellow label is visible. The label provides the following
information:
• Left: Depth at the cursor position
• Middle: Diameter coverage from the transducer beam
• Right: Current gain setting
To change the range, you can also use the mouse wheel. Place
the cursor inside the Range field to do this:
• In a surface related echogram you will modify the range,
while for a bottom related echogram, you will change the
start range.
• If you press the left mouse button while you use the mouse
wheel, the surface echogram will change its start value, while
the bottom related echogram will change its range.
Related topics
→
Getting started, page 33
→ Colour Scale, page 78
Scope
The Scope view is the rightmost view and shows a oscilloscope
view of the last ping corresponding to the settings in the
Echogram view.
This view draws a range of horizontal symmetrical colour lines.
The distance from the vertical centre axis and the line colour
reflects the received echo amplitude. A black horizontal line
across the view indicates the current bottom view.
If you press the right mouse button with the mouse pointer
positioned in the Scope view, the graphic presentation will be
replaced by a text based presentation of the data. The following
information is provided:
Channel:
Background Noise: yyy.y dBW
Receiver Amplitude: xxx.x dBW
Alongship angle: z.zz deg
Athwarthship Angle: z.zz deg
The background noise shown is the median of 20 equidistance
power samples in the total range of the current ping. The
receiver and the two angles (alongship and athwarthship) are
sampled at 100 m depth. During replay, you may find that this
depth setting is not availbale because the depth is less than 100
m. The receiver amplitude is then set to a minimum (235 dBW),
and the angles are set to zero.