Filter
Top Products
39
Section 4: Options & Features
ASP (Advanced Signal Processing)
The ASP feature is a noise rejection system built into the sonar unit
that constantly evaluates the effects of boat speed, water conditions
and interference. This automatic feature gives you the best display
possible under most conditions.
The ASP feature is an effective tool in combating noise. In sonar terms,
noise is any undesired signal. It is caused by electrical and mechanical
sources such as bilge pumps, engine ignition systems and wiring, air
bubbles passing over the face of the transducer, even vibration from the
engine. In all cases, noise can produce unwanted marks on the display.
The ASP feature has four settings — Off, Low, Medium and High. If
you have high noise levels, try using the High ASP setting. If, however,
you are having trouble with noise, we suggest you take steps to find the
interference source and fix it, rather than continually using the unit
with the High ASP setting.
There are times when you may want to turn ASP off. This allows you to
view all incoming echoes before ASP processes them.
Sonar Menu with Sonar Features selected (left). In the Sonar
Features menu (right), Noise Rejection is selected with ASP in the
default low setting.
To change the ASP level:
1. From the Sonar Page, press
MENU|↓ to SONAR FEATURES|ENT.
2. Press ↓ to
NOISE REJECTION|ENT.
3. Press ↓ or ↑ to select a setting, then press
ENT.
4. To return to the main page display, press EXIT|EXIT.