Sonar Settings - Lowrance Mark-4 HDI Operation Manual

Logging Sonar
You can record sonar data and save the file on a
microSD card inserted into the unit's card reader.
View previously
saved sonar logs
Overlay Data
Allows you to select data to
be displayed on top of the
Sonar page. Overlay data
setup is covered in the "Pages"
section.

Sonar Settings

Conventional settings/DownScan Settings
You can adjust settings for both Conventional so-
nar and DownScan sonar modes from the Sonar
Settings menu.
Only adjustments made to conventional sonar
settings will be visible on the sonar page.
Overlay data
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Sonar Operation | Mark-4 & Elite-4 HDI