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OCi OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-5335-r01 (6/27/13)
OVERVIEW
> All dives begin with GAS 1 and TMT 1.
> The GAS and TMT default to # 1 after 10 minutes on the surface.
> Can only switch when a Dive Main screen is displayed.
> Cannot switch while on the surface.
> Cannot access the Switch Menu or perform a switch during the sounding of alarms.
> If an alarm strikes while in the Switch Menu, the switch operation is terminated reverting to the Main.
GAS SWITCH MENU, information includes (Fig. 98):
M (< 2 sec), while a Dive Main is displayed - to access the Switch Menu, if 2 or more gasses are set for use.
> Graphic Goto.
> Graphic selections GAS 1, GAS 2, GAS 3, GAS 4 with FO2 settings.
The Arrow icon ( > ) will be next to the Gas in use at the time.
A (< 2 sec) - to step forward (down) through the selections.
M (< 2 sec) - to step back (up) through the selections.
S (< 2 sec) - to access the Switch To screen for the Gas indicated by Arrow icon ( > ).
No access is provided if OFF.
GAS SWITCH TO, information includes (Fig. 99):
> Graphics SWITCH TO GAS 1 (or 2, 3, 4).
> FO2 setting for that Gas with icon.
> PO2 calculated for that Gas with icon.
> NX icon, if Nitrox.
• S (< 2 sec) - to initiate a Switch from the Gas (and TMT) in use to the Gas indicated (and it's TMT),
> After 2 seconds, a TMT Search screen (Fig. 100A) will appear for 10 seconds, then revert to the Main with the new Gas
(and TMT) selected.
> If the TMT is not reporting, a message will be displayed for 10 seconds (Fig. 100B) and the Switch will be canceled.
Gas Switch Alarm
If a switch to the new Gas would result in PO2 => 1.60, the Audible will sound and a warning message will flash (Fig. 101) until
the Audible is silenced by S (< 2 sec) or 10 seconds elapse, then the Switch To screen (Fig. 99) will be restored.
Due to the possibility that sufficient air may not be available in the Switch From tank, the switch will still be allowed.
If the switch is made, the PO2 alarm will strike.
If in Deco, indication will not be given to ascend (you must control action to be
taken based on activity at that time).
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Fig. 98 - GAS SWITCH MENU
Fig. 99 - GAS SWITCH TO
Fig. 101 - GAS SWITCH
ALARM
WARNINGS
Decompression diving, or diving deeper than 130 FT (39 M), will greatly increase your risk of decompression sickness.
Decompression diving is inherently hazardous and greatly increases your risk of decompression sickness, even when performed
according to the dive computer's calculations.
Using an OCi is no guarantee of avoiding decompression sickness.
The OCi enters Violation Mode when a situation exceeds its capacity to predict an ascent procedure. These dives represent gross
excursions into decompression that are beyond the boundaries and spirit of the OCi's design. If you are following these dive
profiles, Oceanic advises that you should not use an OCi.
If you exceed certain limits, the OCi will not be able to help you get safely back to the surface. These situations exceed tested
limits and can result in loss of some functions for 24 hours after the dive in which a violation occurred.
Fig. 100A - TMT SEARCH
Fig. 100B - TMT NOT
REPORTING