To access the Pre Dive Planning Sequence

(while in the Surface mode) -

Press the Left (Advance) button 1 time

Press and release the Right (Select) button to advance through the Depths/Times, one screen at a time; and then to Surface Mode.

Press the Left (Advance) button to access Fly Mode.

The unit will revert to Surface Mode after 2 minutes if no button is pressed.

With each depth displayed by the Pre Dive Planning Sequence, you will see either predicted no decompres- sion limits (NDLs) based upon your previous dive profiles (if calculated to be nitrogen controlled), or predicted oxygen tolerance limits (OTLs) based upon either a single dive exposure or your 24 hour accumulation of oxygen (if calculated to be oxygen controlled).

The Maximum Depth allowed for the PO2 Alarm and FO2 set points will also be displayed.

Depths greater than the maximum depth that can be achieved with a PO2 of 1.60 ATA will not be displayed.

If the Tissue Loading Bar Graph is displayed (Fig. 43), that next dive is calculated to be controlled by nitrogen loading.

If the O2BG and O2 symbol are displayed (Fig. 44), it is calculated to be controlled by oxygen loading.

N2

FEET

MAX

O2

ATR

Fig.43-NitrogenControl

N2

FEET

MAX

O2

O2

ATR

Fig.44-OxygenControl

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