Vexilar Flasher Family 2013 - Manual (Page 12)

12
Setting the Gain
Gain functions are the same on all models. However, the FL-8se, FL-18 and FLX-28 have a
different scale than the FL-12, FL-20.
G
ain
S
CaLe
• The FL-8se, FL-18 and FLX-28 use a zero to ten scale.
• The FL-12 and FL-20 use a Minimum to Maximum scale.
FL-8se, FL-18 & FLX-28
Gain Control
FL-12 & FL-20
Gain Control
Gain controls the amount of amplification applied to the return sonar signal. Think of gain
as your volume control. You turn up the gain to see more of what’s below. You turn down
the gain to see less of what you don’t want to see. The goal is to find a gain level that
shows you as much real information as possible, without displaying stray signals of clutter
and interference.
Start at a low gain setting, near minimum. Turn up the gain, if necessary, until you see what
you want to see. Generally, gain levels between minimum and one third are adequate for
most situations. Higher gain levels should only be required to read in deeper water or to
see small objects.
DID YOU KNOW ? Gain can act as a variable cone angle. As you increase the gain level,
you can see things further away from the transducer. This can be helpful in uncluttered
conditions. If you don’t see anything on the screen (other than bottom), turn up the gain
temporarily and see if anything shows up. If it does, it could be a fish some distance away
from your transducer. Unfortunately, this won’t work in cluttered water, such as weedy
conditions, because the objects in the center of the cone will get amplified and overlap
anything on the outside, making these objects impossible to distinguish.