User guide

Introduction
NiTek Trio Dive Computer User Manual v1.2 3
Features and Functions
The NiTek Trio incorporates a number of important modes and
features:
• The NiTek Trio turns on automatically upon descent.
• On the surface, the NiTek Trio displays a minimum of date,
time and temperature when activated.
• To conserve battery life, the NiTek Trio will enter the
“Sleep” mode after several minutes of inactivity.
• The NiTek Trio uses easily accessible and highly reliable
push buttons instead of exposed electrical contacts.
• The NiTek Trio can be programmed to monitor exposure to
up to three different gas mixtures during a dive. All three
mixes are programmable for mixtures ranging from air
(EAN21) to EAN99. Underwater, NiTek Trio users can
switch between mixes at the push of a button.
• The NiTek Trio is capable of functioning up to a depth of
328 feet (100 meters) when in dive computer or gage mode
• The NiTek Trio automatically adjusts for altitudes up to
19,685 feet (6,000 meters)
• The NiTek Trio has a digital compass integrated into the
front-panel dot-matrix display
• The NiTek Trio displays a variety of data underwater
including: date, time of day, current and maximum depths,
no-decompression dive time elapsed and remaining, compass
heading, and water temperature
• The NiTek Trio displays data specifically related to the use
of Enriched Air Nitrox (EANx) including: fraction of
oxygen (FO2) setting, partial pressure of oxygen (PO2), and
an oxygen limit index (OLI) representing the cumulative
effect of a diver’s exposure to elevated PO2s (the theoretical
“CNS clock”) as a bar graph
• Through a combination of audible and visible alarms, the
NiTek Trio helps to alert the diver to a number of possibly
hazardous situations including: violation of ascent rate, no-
decompression state, and whether mandatory decompression