CVS-833/833C
Chapter 5
Basic Operation
H:
High freq Normal image
L:
Low frequency Normal image
MIX:
Compared Mix image or
LOW
LOW
MIX
MIX
Subtract Mix image
MIX | L
<MIX | L>
LOW
LOW
MIX
MIX
L | MIX
<L | MIX>
5.5.3 Displaying Dual Frequency image
The CVS-833/833C sounder has a dual frequency image screen function. The screen is split to give
high frequency image on the right and low frequency image on the left. Before you display the dual
screen, you need to register an image mode. To register:
1.
Open the INITIAL menu and select “3 Image mode registration”. For setting detail, refer to Para
6.11.3 “Image mode selection”.
2.
Turn the MODE selection switch to select the DUAL FREQ mode. Dual screen display will be
shown.
Low frequency image
High frequency image
Vertical split
Figure 5.6 Dual Frequency image display
5.5.4 Displaying Zoomed Sea Bottom
The bottom-zoomed screens are available in three kinds: Sea Bottom-Fixed Zoom, Sea
Bottom-Sediment Zoom and Bottom Lock Zoom.
5.5.4.1 Displaying Bottom Lock (BTM) image
When you select the NORMAL/ZOOM mode, the sea bottom is always shown flat with a normal display
shown above. This allows easy finding of the fish school near the sea bottom, while observing the
entire sounder image. To set this mode:
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