Lowrance HDS Gen3 Polaris Installation Manual page 27

The Reset Display List can be used to refresh the list of connected
displays and their UDB version.
Databases
The upper table on the diagnotics page gives an account of the
various automatically synchronised databases that ensure all
Lowrance displays are using the same user settings and data.
Each unit stores the database locally, so that all information is
available if the device is run in standalone. Databases can become
unsynchronized when one or more displays in a multi display
network are not powered up while other displays are being
operated. Creation of waypoints, routes, and altering global settings
all affect databases. When Dirty is displayed, the unit has identified
that its database is older than that of another device on the
network. Dirty should clear within seconds of both devices being
powered up, and the databases synchronizing. If it does not clear, it
is recommended that all devices have the power cycled.
If any database will not synchronize, it may be necessary to use the
Restore Defaults option found under the System menu. Backup
any user settings if required - see "Backing up and Importing user
data" on page 30. The Restore Defaults operation should be
done one device at a time, with all other devices powered off. Once
a device is defaulted, it should be turned off until all other devices
have also been defaulted.
IP addresses
The lower table shows the IP address of the display being viewed
at the top, and is identified with This display next to it. Other
connected displays are shown below it. The function of the display
labeled as Master is invisible to the end user - It manages database
synchronization, however this task automatically shifts to another
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Software setup | HDS Gen3 Polaris Installation Manual