Operational procedures
3
Click on the left edge of the colour scale, keep the mouse button depressed, and drag
the edge towards right.
4
Observe that the weakest colours are removed from the colour scale, and thus also
the weakest echoes from the echogram presentation.
5
Release the mouse button.
6
In order to restore the weakest colours, click on the left edge of the current colour
scale, and drag towards left.
Echogram
These procedures explain the various parameters controlling the ES70 echogram.
Topics
•
on page 81
•
How to select echogram presentation
on page 82
•
How to establish horizontal markers
on page 84
•
How to establish vertical markers
on page 85
•
How to select TVG gain in the Echogram dialog
on page 85
•
How to remove interference and vessel’s own noise from the echograms
on page 86
•
How to easier identify the bottom contour
on page 87
Related topics
•
on page 117
•
About dynamic range and display presentation
on page 111
•
on page 115
•
on page 109
How to change the ping rate
The “ping rate” is the parameter that controls how
often the echo sounder shall transmit acoustic energy
(a “ping”) into the water.
If you observe a pelagic echo on the ES70, and it seems
to follow the bottom contour, it may in fact be a false
echo from the previous transmission (“ping”). The only
way to remove this false echo is to reduce the ping rate. If you do this, all the echoes
from the previous ping will have disappeared before you transmit the next. On old paper
based echo sounders the pen spent a long time on the rear side of the paper tray, and that
reduced the ping rate. The ES70 is a lot faster, and you may send out a ping even before
the energy from the previous ping has disappeared.
343539/B
81
Содержание ES70 - DOWNLOAD AND INSTALLATION REV B
Страница 2: ......
Страница 128: ...ISBN 13 978 82 8066 118 0 2010 Kongsberg Maritime AS ...
