Section 4:
Sonar Options & Other 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 pos- sible under most conditions.
The ASP feature is an effective tool in combating undesired signals (noise) from sources like bilge pumps, engine ignition systems, air bub- bles passing over the face of the transducer and vibration from the en- gine(s). In all cases, noise can produce unwanted marks on the display.
The ASP feature has four settings — Off, Low, Medium and High.
At left, Sonar Menu with Sonar Features selected. In the Sonar Features menu, 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 FEATURESENT.
2.Press ↓ to NOISE REJECTIONENT.
3.Press ↓ or ↑ to select a setting, then press ENT.
4.To return to the previous page, press EXITEXIT.
Alarms
This unit has three different types of sonar alarms: Fish Alarm, Zone Alarm and Depth Alarm.
Depth Alarm
The Depth Alarm has both a Shallow and Deep setting. The depth alarms sound a tone when the bottom signal is shallower than the shal- low alarm's setting or deeper than the deep alarm's setting. These alarms can be used at the same time or individually.
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