Lowrance Mark-4 Operation Manual page 33

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Stop Sonar
Prevents the transducer from transmitting to re-
duce/eliminate interference between two sonar
units running on the boat at the same time.
NOTE: Sonar history (Trackback) will
not be recorded when sonar is stopped.
Logging Sonar
You can record sonar data and save the file on a
microSD card inserted into the unit's card reader.
Controls the quality of sonar logs. Higher
quality logs will use more memory.
View previously
saved sonar logs
DownScan Operation |
Elite series
Overlay Data
Allows you to select data to
be displayed on top of the
DownScan page.
Overlay data setup is covered
in the Pages section.
Settings
Accesses the Settings menu. Refer to "Sonar
Settings" on page
23.
30
Overlay data

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