Humminbird 531338-1_C - Manual (Page 55)

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 main 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)
Temp Offset
(Advanced)
Temp Offset will adjust the temperature readout by the amount entered. This menu choice is
available only when in Advanced User Mode (see Setup Menu Tab: User Mode.)
To change the Temp Offset setting:
1. Make sure you are in Advanced User Mode, then highlight Temp Offset on the Setup
main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Temp Offset
setting. (-10.0 to +10.0 degrees, Default = 0)
Speed Calibration
(Advanced: with Temp/Speed Only)
Speed Calibrationwill adjust the speed readout by the percentage entered, and will appear in the
menu if a Temp/Speed Accessory is connected and the paddlewheel has moved at least once,
when the unit is in Advanced User Mode (see Setup Menu Tab: User Mode.)
To change the Speed Calibration setting:
1. Make sure you are in Advanced User Mode, then highlight Speed Calibration on the
Setup main menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Speed Calibration
setting. (-20% to +20%, Default = 0%)
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