Manual Mares Matrix (page 15 of 20) (English)

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3.3.1.3 STOP SUMMARY TABLE

The stop summary table lists each individual

stop in depth and duration, including safety,

deco and deep stops. This table does not

appear as long as you are in a no deco dive

without deep stop requirement.

This table is especially useful during

decompression dives since it breaks down the

entire ascent into each individual stop.

To call up the stop summary table, press the

bottom left button.

The stop summary table has an 8-second

time-out, after which the screen automatically

reverts to the default computer display. You

can exit the stop summary table before the 8

seconds are passed by pressing the top left

button.

NOTE

In the event of an alarm, Matrix

automatically switches back to the default

computer display.

3.4 AFTER THE DIVE

Upon returning to the surface, Matrix ﬁrst

goes into the so-called surfacing mode. This

mode allows you to resume your dive after a

brief period of orientation. The screen shows

a 3-minute countdown, a proﬁle of the dive,

your maximum depth and the dive time. During

surfacing mode you can call up the compass by

pressing and holding the top left button.

If you submerge again before the 3-minute

countdown is over, the dive time will resume

from where it left off, including the time spent

on the surface. If you do not submerge before

the end of the countdown, Matrix considers the

dive ﬁnished, records the data to the logbook

and reverts to the so-called post-dive mode.

The post-dive screen shows the following

information:

- The remaining desaturation time (DESAT):

this is calculated by the decompression

model in the computer. Any dive started

while there is remaining desaturation on

your computer is considered a repetitive

dive, meaning that Matrix accounts for the

pre-existing nitrogen load in your body.

- The no-ﬂy time (NO

): this is the time

during which an exposure to the reduced

pressure inside the cabin of an airplane

could cause decompression sickness. Matrix

employs, as recommended by NOAA, DAN

and other agencies, a standard 12-hour

(no-deco non-repetitive dives) or 24-hour

(deco and/or repetitive dives) countdown.

Hence you may ﬁnd a situation in which the

desaturation time is shorter than the no-ﬂy

time. This is simply the consequence of the

desaturation time being calculated by the

algorithm based on the actual dive proﬁle,

while the no-ﬂy time is an accepted standard

in the diving industry. Since the real effect of

ﬂying after diving has never been fully

investigated, this approach ﬁts with our

philosophy.



WARNING

Flying while Matrix displays NO

can

result in serious injury or death.

- The surface interval (SURF): this is displayed

from the moment the dive is closed (3

minutes after surfacing) for as long as there

is remaining desaturation or no-ﬂy time on

the computer.

- In case of a dive violation, the corresponding

symbol (

, ) is shown next to the surface

interval.

In addition, the left bar graph shows the

calculated nitrogen load in the leading tissue.

You can use this to gauge your progress

in getting rid of nitrogen as the surface

interval grows. Matrix continues to perform

decompression-related calculations (nitrogen

release), for as long as there is desaturation

time left.

During post-dive mode you can revert to the

regular watch display by pressing the top left

button. You can return to the post-dive screen

again by pressing the top left button.

From the post-dive screen you can also jump

directly to the log of the last dive by pressing

and holding the top right button.

3.5 DIVING WITH MORE THAN ONE

GAS MIXTURE



WARNING

- Diving with more than one gas mixture

represents a much higher risk than

diving with a single gas mixture, and

mistakes by the diver may lead to

serious injury or death.

- During dives with more than one gas

mixture, always make sure you are

breathing from the tank that you intend

to breathe from. Breathing from a high

oxygen concentration mix at the wrong

depth can kill you instantly.

- Mark all your regulators and tanks so

that you cannot confuse them under any

circumstance.

- Before each dive and after changing

a tank, ensure that each gas mixture

is set to the correct value for the

corresponding tank.

Matrix enables you to use up to three gas

mixtures during the dive (air and Nitrox

only). The three mixtures are labeled G1, G2

and G3 and must be in ascending order of

oxygen content, i.e. G1 has the lowest oxygen

concentration, G2 an intermediate value, and

G3 has the highest oxygen concentration of the

three. If you are diving with only two mixtures,

you will be utilizing tanks G1 and G2.



WARNING

It is not possible to switch to a gas at a

depth at which the oxygen partial pressure

for that gas is greater than the set

maximum value.

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Mares Matrix Manual

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