Humminbird 1157C - Manual (Page 175)

Depth Offset
(Advanced)
Depth Offset will adjust the digital depth readout to indicate depth from the waterline or boats 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 = 0.0, or Off)
Aux. Temp. Offset
(Advanced)
Aux. Temp. Offset will adjust the aux. temperature readout (the temperature on the optional-purchase
temperature probe or Temp/Speed accessory) by the amount entered. This menu choice is available only
when in Advanced User Mode (see Setup Menu Tab: User Mode.)
To change the Aux. Temp. Offset setting:
1. Make sure you are in Advanced User Mode, then highlight Aux. Temp. Offset on the Setup menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Aux. Temp. Offset setting. (-10.0
to +10.0 degrees, Default = 0.0, or Off)
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 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 = 0.0, or Off)
165