4. Dive Condition Marks
The dive condition currently set for each of the time modes of the standard mode, the dive plan display in the dive plan mode and the surface mode is displayed using one of the four types of marks indicated below.
•Identification of the AIR or NITROX setting for the next dive set in the dive plan mode
•Identification of
AIR setting | AIR setting and |
NITROX setting | NITROX setting and |
*The dive condition mark ( 
or 
) flashes for about 1 hour to warn the diver in the case the watch has automatically returned to the AIR setting from the NITROX setting.
5. Switching Dive Condition and Setting Oxygen Concentration (O2%)
[AIR][Oxygen Concentration Setting State][NITROX]
(C) x 2 |
| |
seconds or | (C) or (D) | |
more | ||
|
Flashes
(C) x 2 seconds or more
A. NITROX Setting and Oxygen Concentration Setting
(1)The watch switches to the NITROX “Oxygen Concentration Setting State” (display flashes) when the upper left button (C) is pressed for 2 seconds or more and then released during the dive condition display (“AIR” display).
(2)Set the oxygen concentration (O2%) by pressing the lower right button (A) or upper right button (B).
*Oxygen concentration increased by 1% each time the upper right button (B) is pressed once, and decreases by 1% each time the lower right button (A) is pressed once. (Oxygen concentration can be corrected rapidly by continuously depressing either button.)
(3)The oxygen concentration setting is finalized by pressing the upper left button (C) or lower left button (D) and then releasing.
*Oxygen concentration (O2%) can be set between 22% and 50%.
*If none of the buttons are pressed for about 3 minutes in the oxygen concentration setting state (display flashing), the flashing oxygen concentration setting is finalized automatically and the watch changes to the NITROX setting display.
*In the case of changing the oxygen concentration setting after it has been set, reset the oxygen concentration after first returning to the “AIR” setting display.
B. Switching from NITROX Setting to AIR Setting
After about 30 minutes have elapsed for surface interval time after having performed scuba diving in the “NITROX” setting, an alarm sounds and the watch automatically returns to the “AIR” setting. In addition, if scuba diving is not performed for about 6 hours after having set the watch to NITROX, the watch automatically returns to the “AIR” setting. In the case of returning to the “AIR” setting after having set the watch to “NITROX”, return the watch to the “AIR” setting by pressing the upper left button (C) for 2 seconds or more and then releasing during the “NITROX” display.
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