Speed Calibration (Advanced, With Temp/Speed Only); Local Time Zone (Advanced) - Humminbird 786ci Operation Manual

Speed Calibration will 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, and when the User Mode is set to
Advanced (see Main Menu: User Mode).
To change the Speed Calibration setting:
1. Make sure the User Mode is set to Advanced, then highlight Speed
Calibration on the Setup main menu.
2. Press the LEFT or RIGHT Cursor keys to change the Speed Calibration
setting. (-20% to +20%, Default = 0%)
Local Time Zone selects your time zone in reference to the time reported by the
GPS receiver when Time+Date is selected as a Digital Readout (see Navigation
X-Press™ Menu: Select Readouts). This menu option is available when the
User Mode is set to Advanced (see Main Menu: User Mode).
To change the Local Time Zone:
1. Make sure the User Mode is set to Advanced, then highlight Local Time
Zone on the Setup main menu.
2. Press the LEFT or RIGHT Cursor keys to change the Local Time Zone.
(Default = EST [UTC-5] - Eastern Standard Time)
Speed Calibration
(Advanced, with Temp/Speed only)
Local Time Zone
(Advanced)
106 Setup Menu Tab