Downscan Operation; Trackback - Lowrance Mark-4 HDI Operation Manual

DownScan Operation

This unit supports two types of sonar: Conventional
and DownScan.
The features described in this section are for
DownScan sonar. Refer to the "Sonar operation"
section for information on conventional sonar
features.

Trackback

You can review your sonar history by pressing the
keypad to the left until the screen starts to move
in reverse and the sonar history bar appears at the
bottom of the screen.
DownScan history bar
DownScan Operation | Mark-4 & Elite-4 HDI
Move the sonar history bar all the way to the right
to resume normal sonar scrolling, or press Menu
and select Exit cursor mode.
DownScan menu
Press Menu from the DownScan page to view the
DownScan menu.
Stops sonar
transmission;
pauses sonar
scroll
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