Specifications

OPERATIONAL MODES

While on the surface, the Control Buttons enable you to access operational

modes and activate the backlight. During a dive, they enable you to view an

Alternate display of information and activate the backlight.

TEMPERATURE/TIME/DATE MODE

To view Ambient Temperature/Time/Date (Fig. 30) while in Surface Mode:

• Press the Advance (Left) button 1 time.

• The backlight will illuminate the display for 10 seconds.

• The unit reverts to Surface Mode after 10 seconds, unless the Advance

(Left) button is pressed to access FO2 Set Mode.

Set for Imperial units of measure, Month is on the left and Day on the right.

Set for Metric, Day is on the left and Month on the right. Year doesn't appear.

FO2 MODE

The 500AI can be used either as an Air computer or as a Nitrox computer. Af-

ter activation, it will operate as an Air computer without displaying informa-

tion associated with oxygen calculations, unless the percentage of oxygen

(FO2) is set for a value other than 'Air' (i.e., a numerical value of 21 to 50 %).

Fig. 30 - Temp/Time/Date