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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r01 (6/27/13)
DECLINATION
Magnetic Declination is taken from numbers provided on maps or charts that apply to a specific location. The numbers represent
the easterly or westerly angular difference (Declination) in degrees between magnetic North and true (geometric or polar) North.
A Compass will point to magnetic North unless its reference is adjusted to true North prior to conducting activities.
Upon selecting SET DECLIN on the Compass Main Menu, a Declination Menu is displayed, information includes (Fig. 170) -
> Graphic SEL, with selections -
> DECLIN OFF.
> DECLIN EAST.
> DECLIN WEST.
• A (< 2 sec) - to step forward (down) through the selections.
• M (< 2 sec) - to step back (up) through the selections.
• S (2 sec) - to step back to the Compass Main Menu.
• S (< 2 sec) - to select the item indicated by the pointer ( > ) icon.
> If OFF is selected, Declination is set for 0° and operation reverts to the Compass Main Menu.
> If DECLIN EAST (or WEST) is selected, the Set Declination screen is accessed displaying the graphics SEt and DECLIN EAST
+ (or WEST - ) with the Declination value flashing (Fig. 171).
• S (2 sec) - to step back to the Set Declination Menu.
• A (hold) - to scroll upward through set points at a rate of 4/sec from 0 to 45° in increments of 1°.
• A (< 2 sec) - to increase set points one at a time.
• M (< 2 sec) - to step back through set points one at a time.
• S (< 2 sec) - to save the set point and revert to the Set Declination Menu.
• M (2 sec), at any time - to revert to the Compass OP Main.
• L (< 2 sec) - to toggle the Backlight On/Off.
• L (2 sec), while the Backlight is On - to reset the timer and keep it On for the duration time set.
ALARMS
When most Alarms strike, operation in Compass Mode will be terminated and the Dive Main will be displayed describing the
alarm condition. Compass Mode can then be reentered by pressing S (2 sec).
During several types of alarms, indication will be given while remaining in Compass Mode without interuption. They are -
Ascent Alarm (Fig. 172) -
> VARI, all segments flashing until slowed.
Depth Alarm (Fig. 173) -
> Depth digits flash until shallower than the alarm depth set.
WARNING
You must become thoroughly familiar with setup and operation of the OCi Digital
Compass before using it as your primary device for navigation. Failure to do so
could result in serious errors relating to activities involving navigation.
> Practice on land before use in water.
> Practice on the surface before use underwater.
Fig. 171 - SET DECLINATION
Fig. 172 - ASCENT ALARM
Fig. 173 - DEPTH ALARM
Fig. 170 - DECLIN MENU