Eagle Electronics FISHEASY 240 User Manual

Page 68

ASP 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 pass-

ing over the face of the transducer, even vibration from the engine. In

all cases, noise can produce unwanted marks on the display.
The ASP noise rejection feature is especially useful because it typically

lets you operate the boat at all speeds without adjusting the sensitivity

or other controls.

Noise Reject menu.

The ASP feature has four settings — Off, Low, Medium and High.

When first turned on, noise rejection is set on low. If you have high

noise levels, try using the medium or high ASP setting. However, if you

are having trouble with noise, we suggest that 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 they are processed by the ASP feature.
To change the ASP setting, press

MENU DOWN

until

OISE

EJECT

ap-

pears. Use the up and down arrow keys to select the desired setting,

then press

PWR

to clear the menu.