Vexilar FL-22 - Manual (Page 15)

15
Bottom Lock
( FL-18 & FL-22
HD
Only )
Bottom Lock (BL) works the same as Auto Zoom, except the flasher continuously updates
the position of the bottom in the magnified view. This can be helpful in a boat that is
moving over varying depths or is riding in heavy waves.
Bottom Lock will keep the bottom reading lined up correctly with the zero mark on the
Zoom scale. This allows you to see objects which are very close to the bottom, even
though the depth may be changing rapidly. The range control must be set to a position
where the bottom is displayed in order for Bottom Lock to function.
FL-18 Bottom Lock (BL)
Activate Bottom Lock by switching the
Mode control to the BL selection on the
right or the left. The right selection operates
Bottom Lock at the normal power level. The
left selection operates Bottom Lock in Low
Power Mode. FL-22
HD
Bottom Lock (BL)
Activate Bottom Lock by switching the
Mode control to the right BL 6’ selection.
This selection operates the 6-foot zoom
Bottom Lock at the normal power level.
Use Bottom Lock in your boat only.
FL-20 & FL-22
HD
Low Battery Indicator
When battery power runs low, the red “Low Battery”
indicator light will turn on. You can continue to use the
flasher, but be aware your time is rapidly decreasing.
When the indicator light begins to flash, failure due to
low voltage is imminent.
IMPORTANT - Bottom Lock works best for boats in motion. When still fishing, such as
vertical jigging or ice fishing, the Bottom Lock feature can incorrectly identify a large
object slowly moving into your view as a shallower depth change. The result is that the
flasher adjusts to the new level and the object is displayed as the bottom.
Bottom Lock is not available on the FL-20