| | | that mix to 99% at midnight; if either mix is set to Air, it will stay set to Air indefinitely. - If mix 1 defaults to a 99% F02, it will be denoted by the flashing Nitrox label . This 99% default is built in to protect you from making subsequent nitrox dives with the wrong F02 setting. If you make a dive with the F02 set to 99%, an audible alarm will sound upon entering the water. Return to the surface and reset the F02 to the proper percentage. If you continue the dive, you will reach the P02 limit at about 20 feet (6 m). Again, return to the surface and reset the F02 to the proper percentage. - If Mix 1 defaults to 99%, the no-decompression and decompression calculations will he calculated as though you were diving with normal air (79% nitrogen). Therefore, the Pulse calculates a worst-case scenario (99% Oxygen, 79% Nitrogen). At worst, the computer will he more conservative on subsequent dives. - If only Mix 2 defaults to 99% (Mix 1 set to Air), you will only get an audible warning when entering the water. Upon hearing the warning, return to the surface and reset the Mix. | | |