Operating instructions

Figure 17
Gauge Mode - Surface (12 to 0 hrs)
ues to count down from 12 - 0 hrs. It also displays a single dash (a) which
denotes that the computer has been violated and, if turned on, will only
work in Gauge Mode.
Caution Zone
The yellow caution zone offers you a convenient way to monitor how close you
are to the no-decompression limit. U.S. Divers strongly recommends that you
leave the water with CLBG well inside the green zone.
WARNING: Never exit the water with the Compartment
Loading Bar Graph in the red decompression zone. Doing
so greatly increases the risk of decompression sickness,
and may result in injury or death.
A diver’s metabolism varies from person to person, and even from day to day. If
you are feeling less than 100%, or you are in less than perfect shape, use the
yellow caution zone as a visual reference to place a wider margin of protection
between you and the no-decompression limit.
What to do if your computer quits working
Because a dive computer is an electronic, battery powered instrument, the possibility that it may quit working unexpect-
edly is very real, even with new, high quality batteries. While no-decompression diving, if you find that any major piece of
equipment is not working, you must abort the dive immediately and surface slowly in a controlled manner. If your dive
computer quits for any reason, it is important that you have anticipated this possibility and are prepared for it. This is an
important reason not to push your dive profiles to the limit. U.S Divers advises you to bring additional backup instru-
ments with you on your dives, and to log each dive profile during every surface interval.
Dive computers make diving easier and provide a planning tool to enable you to increase dive time for more enjoyment
underwater. Yet, as with any high tech instrument in a harsh environment, unforeseen things may happen. If you do not
prepare for the unexpected, you may be unprepared to respond adequately. If you dive in situations where your trip
would be ruined, or your safety jeopardized by losing the use of a dive computer, an analog or digital backup system is
highly recommended.
Night Diving with the Matrix
The Matrix uses a high contrast liquid crystal display with large numerals for easy readability in low light conditions.
However, the display is not internally illuminated for night diving because of the excess power consumption that would
be required. Therefore, on night dives, cave dives, or any low-light situation, you must use your dive light to illuminate
the display. If your dive light were to fail, you would be unable to read your critical dive information. U.S. Divers recom-
mends that you carry a backup light in case of primary light failure.
Sharing the Matrix
The Matrix provides information based upon your personal dive profile and, therefore, must not be shared between
divers. You should never, under any circumstances, swap your computer with another unit between dives, or share your
computer with another diver underwater.
WARNING: Never participate in sharing or swapping of a dive computer. Doing so may result
in injury or death.
A Final Word of Caution
Although the Matrix represents the latest in user-friendly dive computer technology, it cannot force you to understand
how to use it. Before diving with the Matrix, be sure you thoroughly understand its functions and displays. If you have
any questions, call your local Aqua Lung dealer. Remember, technology is not a substitute for training, experience, and
common sense.