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Grayline selected on sonar menu (left); Grayline control bar (right).
Press ↑ or ↓ to increase or decrease Grayline. Echoes scrolling onto the
screen will show the effects of the change. If you reach the maximum or
minimum level, a tone sounds alerting you to the limit. Press
EXIT to
clear the menu.
HyperScroll
See the entry on Ping Speed, which controls the HyperScroll feature.
Log Sonar Chart Data
If you have an MMC installed in the unit, the sonar data shown on the
screen can be saved to it. This can be played back at any time. (To play
a recorded sonar chart log, see the entry in this section for Sonar
Simulator.) If you have a personal computer and internet access,
download our free Sonar Viewer and your unit’s emulator at our web
site, www.lowrance.com. That will allow you to replay sonar logs on
your personal computer.
The Sonar Page menu with the Log Sonar Chart Data command
selected (left). Sonar Chart Logging menu, with the Start Logging
command selected (right). The MMC has 11.7 MB of free space, which
will record the scrolling chart for 20 minutes and 44 seconds.