Specifications

500AI

Remember that the rules you learned in your basic scuba certification course

still apply to the diving you will do while using a dive computer - some will be-

come even more important. Technology is no substitute for common sense,

and a dive computer only provides the person using it with data, not the

knowledge to use it.

NOTE: Throughout this owner's guide reference is made to the

term 'breathing gas'. The rational being that the 500AI can be

used for 'air' dives or 'nitrox' dives. For clarity these terms are

defined as -

Breathing Gas - the gaseous mixture breathed during a dive.

Air - a breathing gas that contains approximately 21% oxygen and 79%

nitrogen (nature's common nitrogen-oxygen mixture).

Nitrox - a nitrogen-oxygen breathing gas that contains a higher fraction

of oxygen (22 to 50%) than air.

CONTROL BUTTONS

The 500AI is a unique dive computer with interactive controls that allow you

to select various display options and access specific information when you

choose to see it. The Advance (Left) and Select (Right) control buttons (Fig.

1) can be pressed repeatedly, or held in to scroll as you define settings or access

different display modes.

SelectAdvance

Fig. 1 - Control Buttons