Speed Calibration (Advanced, With Speed Paddlewheel Only); Local Time Zone (Advanced); Daylight Saving Time (Advanced); Position Format (Advanced) - Humminbird 917C Installation And Operation Manual

Speed Calibration will adjust the speed readout by the percentage entered,
and will appear in the menu if a 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 menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control 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 on the
Sonar View (see Select Readouts). This menu choice is available only when
in Advanced User Mode (see Setup Menu Tab: User Mode.)
To change the Local Time Zone:
1. Make sure you are in Advanced User Mode, then highlight Local
Time Zone on the Setup menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the
Local Time Zone (Default = EST [UTC-5] - Eastern Standard Time).
Speed Calibration
(Advanced, with Speed paddlewheel only)
Local Time Zone
(Advanced)
Daylight Saving Time adjusts the time display to account for local Daylight
Saving Time. Selecting On adds one hour to the time display adjusted for
your local time zone. Selecting Off leaves the time display as adjusted for
your local time zone. This menu choice is available only when in Advanced
User Mode (see Setup Menu Tab: User Mode.)
To change the Daylight Saving Time setting:
1. Make sure you are in Advanced User Mode, then highlight Daylight
Saving Time on the Setup menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to turn Daylight
Saving Time On or Off. (Off, On, Default = Off)
Position Format selects the format of the latitude and longitude position
display. This menu choice is available only when in Advanced User Mode
(see Setup Menu Tab: User Mode.)
To change the Position Format setting:
1. Make sure you are in Advanced User Mode, then highlight Position
Format on the Setup menu.
2. Use the LEFT or RIGHT 4-WAY Cursor Control keys to change the Position
Format. (dd.ddddd°, dd°mm.mmm', or dd°mm'ss", Default = dd°mm.mmm')
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Daylight Saving Time
(Advanced)
Position Format
(Advanced)