User guide

Using the NiTek Trio

28 NiTek Trio Dive Computer User Manual v1.2

Dive Computer mode

Dive computer mode is automatically entered when the computer enters

the water. It begins performing its dive calculations once you descend

below 4 feet (1.2 meters).

Caution: Prior to diving, always check to ensure that the FO2 settings

are correct and that the computer is not in FO2 default.

While in diving mode, the computer calculates and displays

information about your dive and prompts you with safety stop

information and warnings if needed.

While underwater, there are two screens you can toggle between and

you can switch from mix1 to mix2 or mix 3 when needed. You can also

activate the back light feature.

Primary underwater screen

When you enter the water, the primary screen shows your depth,

remaining no-decompression limit, dive time, PO2 for selected mix, N2

and O2 bar graphs, and the ascent rate indicator.

(1) Ascent rate indicator: This is a representation of how fast you are

ascending. When you are ascending at a safe rate, it will display

“SAFE”. If you are ascending too fast, it will flash the word “SLOW”

and an audible alarm will sound to indicate you have exceeded the

maximum safe ascent rate.

(2) PO2: This is the partial pressure of O2 at your current depth. It is

based on the FO2 settings for the mixes.

(3) O2 (OLI) bar graph: This is the oxygen limit index (OLI) that

calculates the cumulative effect of your exposure to elevated partial

pressures of oxygen (PO2s). There are a maximum of eight bars. When

all bars are displayed, it means that you have used 100 percent of your