Humminbird 4090501 Depth Offset, Temp. Offset, Depth Offset, Temp. Offset will adjust the temperature readout by the amount entered

Default Sonar View Sonar View with Select Readouts

Depth Offset

(Advanced)

Settings: -10.0 to +10.0 feet, or -3.0 to 3.0 meters (International Models only); Default = 0 ft

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.

Temp. Offset

(Advanced)

Settings: -10.0 to +10.0 degrees, Default = 0

Temp. Offset will adjust the temperature readout by the amount entered.

145 Setup Menu Tab