Viewing Sonar History - Lowrance HDS Gen2 Touch Operator's Manual

Viewing sonar history

You can view sonar history by activating the cursor and then
dragging your finger horizontally across the screen. Whenever the
cursor is activated on the sonar page, the blue sonar history scroll
bar will appear at the bottom of the screen. The scroll bar shows the
image you are currently viewing in relation to the total sonar history
stored.
The scroll bar on the far right side indicates that you are viewing
the latest soundings. If you position the cursor to the left side of the
screen, the history bar will start scrolling toward the left, and the
automatic scrolling as new soundings are received will be turned
off.
You can pan the image history by dragging left/right on the screen.
Preview
You can have all available sonar history shown at the top of the
sonar screen. The Preview bar is a snapshot of available sonar
history. You can scroll through sonar history by dragging the
preview slider horizontally. Preview is turned on by default.
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Sonar | Lowrance HDS Gen2 Touch