Humminbird 580 - Manual (Page 94)

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To Select Readouts:
1. Make sure you are in Advanced User Mode, then highlight Select
Readouts on the Setup main menu.
2. Use the RIGHT 4-WAY Cursor Control key to initiate this procedure.
3. The Select Readouts submenu will appear, showing a list of all
Readouts. Use the UP or DOWN Cursor keys to select a particular
Readout position, then use the RIGHT or LEFT Cursor keys to change
what will be displayed at that position. (Course, Navigation, Position,
Off, Speed, Temperature, Time+Date, Triplog, Voltage)
Depth Offset
(Advanced)
Depth Offset will adjust the digital depth readout to indicate depth from the
waterline or boat's keel. Enter a positive vertical measurement from the
transducer to the waterline to read the depth from the waterline. Enter a
negative vertical measurement from the transducer to keel to read the depth
from the keel. This menu choice is available only when in Advanced User Mode
(see Setup Menu Tab: User Mode.)
To change the Depth Offset setting:
1. Make sure you are in Advanced User Mode, then highlight Depth
Offset on the Setup menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Depth
Offset setting. (-10.0 to +10.0 feet or -3 to 3 meters [International
Models only], Default = 0)