Chapter 6
CVS-841/851
Using the menu
6-10
0093132682-05
6.6.2 Information Window
Displays a digital window in which the following information is shown: Own Ship’s position, Event
position, water temperature and ship’s speed.
Selections: ON, OFF
Initial setting: OFF
NOTE 1: The Information Window feature is not available in CVS-841.
CAUTION: The following external devices must be connected to display the information in
the window: A navigation receiver that supplies the NMEA serial data for own ship position, event
position and own ship’s speed indications. A temperature/speed sensor (ST-80-1/90-1/100-1) that
supplies water temperature and own ship’s speed indications.
6.6.3 Zoom type
BTM (Bottom)
The bottom image is always fixed in the lower part
of the screen even though the depth changes.
BD (Bottom Discrimination)
Even though the sea bottom depth changes, the top
surface of the sea bottom is displayed as a flat surface in
order to serve as a reference. A range of measurement
is also taken underneath the reference.
This results in being able to distinguish school of fish and
bottom quality that may be at the sea bottom.
ZOOM(Zoom)
A zoomed image is shown in reference to a
specified depth. In this mode, the seabed echoes
are always shown even when the depth changes.
Zoom range
Figure 6.10 Layout of BTM image display
Discrimination
Normal Range
Figure 6.11 Layout of BD image display
Zoom start depth
Zoom range
Figure 6.12 Layout of ZOOM image display
