Oceanic VT 4.0, Руководство по эксплуатации

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VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
NORM DIVE PREVIEW
This feature provides quick access to a screen that displays up to 4 settings that can be pre selected* using the Set P Menu.
Preview,
information includes (Fig. 22):
> Graphics Nor and PREV.
> Selections* with Set Points entered using that menu.
*If no selections have been made yet, the graphics USE SET P TO SELECT ENTRIES will be displayed.
• S (< 2 sec) to revert to Main Menu.
SET GROUPS
Information that follows describes the selections contained in the NORM Set Groups (F, A, U, T, S, D, P) that are accessed from
the Set Menu.
Main Menu >> Set Menu >> Set Group Menu >> Set Selection.
SET F (FO2) Menu,
information includes (Fig. 23A):
> Graphics* SEt F and MENU.
*During the time that numeric FO2 values are flashing, the Max Depth allowed for the PO2 alarm set with the FT (or M) icon is displayed in
place of the graphic SEt F and the PO2 alarm value set with the PO2 icon is displayed in place of the graphic MENU (Fig. 23B).
Selections with their last Set Points saved include:
> FO2-1 with Set Point (AIR, or 21 to 100%), 1% increments.
> FO2-2 with Set Point (AIR, or 21 to 100%), 1% increments.
> FO2-3 with Set Point (AIR, or 21 to 100%), 1% increments.
> FO2-4 with Set Point (AIR, or 21 to 100%), 1% increments.
> DEFAULT with Set Point (ON or OFF).
• A (< 2 sec) to step forward (down) through Menu.
• M (< 2 sec) to step back (up) through Menu.
• S (< 2 sec) when the pointer icon ( > ) is next a selection will flash that item’s Set Point (Fig. 23B).
• A (< 2 sec) to step upward through Set Points (increase).
• A (hold) to scroll upward through Set Points at a rate of 8 per second.
• M (< 2 sec) to step back through Set Points (decrease).
• S (< 2 sec) to save the setting and revert to the Set F Menu.
FO2 50% Default:
When set ON and FO2 Gas 1 is set for Nitrox (21 to 100%), 10 minutes on the surface after that dive the FO2 Gas 1 will be
displayed as 50% and further dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 for Nitrogen
calculations (79% Nitrogen), unless the FO2 Gas 1 is changed before the dive.
FO2 Gas 1 will continue to reset to the 50% Default after subsequent repetitive dives until 24 hours elapse after the last dive, or
the Default selection is set OFF.
When set OFF, FO2 Gas 1 will remain set at the last Set Point entered during that period of activation.
FO2 set for AIR:
The default FO2 for Gas 1 each new activation period is AIR.
When FO2 for Gas 1 is set for AIR -
> calculations are the same as when it is set for 21% O2.
> it remains set for AIR until it is set for a Nitrox (21 to 100% O2).
> O2SAT and PO2 values and/or warnings will not be displayed at any time, on the surface or during dives.
> Max Depths allowed by the PO2 alarm set will not be displayed.
Internally, the unit will keep track of the oxygen accumulation so that if FO2 for Gas 1 is subsequently set for Nitrox, the oxy-
gen accumulated during previous AIR dives will be accounted for in the next Nitrox dive (during that dive period and series of
repetitive dives).
FO2 set for Nitrox:
When FO2 for any Gas is set for Nitrox (21 to 100%), the dive is calculated to be for Nitrox. The Nx icon is to be displayed on
all applicable screens.
Once FO2 for Gas 1 is set for Nitrox (21 to 100%), the AIR option for all gases is disabled until 24 hours elapse after the last
dive.
The AIR option will not be displayed in Set FO2 until a full 24 hour Surface Interval has elapsed.
If the FO2 Default is set OFF, FO2 for all gases will remain at their respective Set Points until changed.
If the FO2 Default is set ON, FO2 for all gases default to 50%.
Fig. 22 - PREVIEW
(selected settings)
Fig. 23A - SET F MENU
(stepping through)
Fig. 23B - SET FO2-2
(changing the setting)