Chapter 5
CVS-833/833C
Basic Operation
5.7.1 Setting AUTO GAIN function
Using this function the receiver gain is automatically controlled to an appropriate level even if the sea
bottom depth changes, eliminating the need of manual gain control. To use this function:
1. Press the AUTO key repeatedly until the word “AUTO” appears on the screen.
5.8 Shifting the image
NORMAL image mode has two shift modes, Fixed Shift and Auto Shift.
5.8.1 Setting Fix Shift mode (Selecting depth range and Fix Shift position)
In this mode, sounding range can be determined by setting an upper depth line and the depth range.
The image starts from the upper depth line. To use this function:
1. Register the depth range. Refer to 6.11.2 “Registering depth range” for detail.
2. Select the depth range by the RANGE switch.
3. Press the + and – key at the same time to set up shift positioning status.
4. Press the + or – key to set the upper depth value.
Upper depth level
Depth range
The selected range is
shown here
The upper depth
level is shown
here
When upper depth
level is selected
When depth rang is
selected
Figure 5.14 Fix Shift mode display
Figure 5.13 Setting Upper depth and depth range
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