Sounding Modes

The sensor sends echogram images to different directions depending on the application and sounding settings.

Down Looking Application

Down only
The sensor sends three echogram images of the area below: starboard (1), vertical (2), port (3).
Down + Up
The sensor sends three echogram images of the area below and one echogram image of the area above (4).

The update rate is lower because the pings are distributed between up and down directions. As a result, data arrives more slowly to the receiver.

Up Looking Application

Up only
The sensor sends three echogram images of the area above: : starboard (1), vertical (2), port (3).
Down + Up
The sensor sends three echogram images of the area above and one echogram image of the area below (4).

The update rate is lower.