
Chapter 6: Using the Fishfinder 6-9
Note:
If the A-Scope or Zoom image was displayed, selecting Bottom Lock automati-
cally switches OFF A-Scope and Zoom.
To display or remove the Bottom Lock image:
1. Press BOTTOM LOCK. The Bottom Lock soft keys are displayed.
2. Toggle to:
• BOTTOM LOCK ON to replace the standard fishfinder image with the bottom
lock image.
• BOTTOM LOCK SPLIT to display both the standard fishfinder and bottom lock
image in a single window.
• BOTTOM LOCK OFF to return to the standard fishfinder image.
3. To adjust the range of the Bottom Lock image, press B-LOCK RANGE and then use
the rotary control to adjust the range.
4. To re-position the Bottom Lock image to view more bottom details, press BOTTOM
SHIFT and then use the rotary control to adjust the shift between the bottom of the
window (0%) and the middle of the window (50%).
5. Press OK or CANCEL to return to the default display.
BL
B-LOCK RANGE
50ft
BOTTOM SHIFT
14%
BOTTOM LOCK
ON SPLIT OFF
200 kHz: Auto
Gain: Auto High
Depth from the surface
D6672-2
Bottom lock range
(distance from bottom)
Bottom
shift
Depth
reading
Bottom lock image Standard fishfinder image
81244_1.book Page 9 Wednesday, December 1, 2004 11:41 AM
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