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Cressi GIOTTO Manual

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type of mixture contained in the cylinder and to set the FO2 of the computer according to that mixture.
DANGER: Do not dive with cylinders containing nitrox mixtures whose percentages of oxygen have not
been personally checked.
DIVE SAFETY FACTOR (SF)
The safety factor is an additional parameter whose purpose is to make dives safer based on the existence
of personal risk factors which increase the risk of decompression sickness. The diver can set it on three
values: SF0/SF1/SF2. The factory setting is SF0, i.e. disabled.
To change the Safety Factor (SF) press the right (>) button up to the DIVE-S mode. Enter in the menu by
pressing the central Mode button. Scroll with the right (>) or left (<) button until the SF0 indicator stops
flashing. Press the central Mode button and change the element with the right (>) or left (<) buttons.
Confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic
signal to confirm exit from the menu. Keep pressing and holding the central button to return to the main
menu (after another acoustic signal) and if it is still on, the computer will shut down. Alternatively, the
computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen,
and then it will automatically shut down.
IMPORTANT: Enable and set a higher factor (SF2/SF3) whenever you are aware of conditions which may
increase the risk of decompression sickness. In this way, the non decompression times will be shorter as
well as the dive which will also be more conservative, ensuring greater safety.
DEEP STOP
There are different diving teaching methods and decompression theories. Each of those has been
developed according to important scientific concepts, lab tests and practical tests. Some of those, during
specific dives, support and require DEEP STOP, while others do not contemplate this type of
decompression profile. Giotto is factory set with DEEP STOP active. If you want to disable it, just press the
right (>) button until you reach the DIVE SET menu; press the central Mode button to enter in the mode.
Scroll with the right (>) or left (<) button until the DEEP STOP indicator stops flashing. Press the central
Mode button. The word DEEPST ON will be displayed (this last indicator will flash). By pressing the right
(>) or left (<) button the word DEEPST OFF will appear. Confirm the value set by keeping the Mode button
pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu. Keep pressing
and holding the central button to return to the main menu (after another acoustic signal) and if it is still on,
the computer will shut down. Alternatively, the computer will modify the automatic setting by issuing an
acoustic signal to return then to the main screen, and then it will automatically shut down.
ALTITUDE
When diving at a location above sea level, it is important to check that the appropriate altitude level has
been set. Press the right button to move up to dive set mode DIVE-S, enter in this mode by pressing the
central Mode button. Scroll with the right or left button until the ALT indicator stops flashing. Therefore,
press the central Mode button and change the data with the right/left button, in order to visualise the data
in ascending or descending order one, two or three small mountains that symbolise the altitude level
chosen. Confirm the value set by keeping the Mode button pressed for a few seconds until hearing an
acoustic signal to confirm exit from the menu. Keep pressing and holding the central button to return to the
main menu (after another acoustic signal) and if it is still on, the computer will shut down. Alternatively, the
computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen,
and then it will automatically shut down.
The screen shows the corresponding altitude levels, indicated as follows:
No mountain - from 0 to 700 m
One mountain - from 700 to 1,500 m
Two mountains - from 1,500 to 2,400 m
Three mountains - from 2,400 to 3,700 m
Each icon indicates that the computer has automatically changed its mathematical model depending on
the altitude set. This must obviously correspond to the real altitude reached, and must be comprised in the
altitude level intervals of the computer (none, one, two, or three mountains). It is important to remember
that when diving at higher altitudes (higher than normal) the body experiences alterations due to nitrogen
oversaturation which must rebalance with the external environment. In the same way, it is important to
remember that, due to lower partial pressure of the oxygen in the atmosphere, our body needs an
DEEP STOP ON/OFF
SAFETY FACTOR SETTING
ALTITUDE SETTING
LONG LONG
LONG
LONGLONG
LONG
MODE MODE
MODE
MODEMODE
MODE
LONG
MODE
MODE
LONGLONG
LONG
LONG
LONG LONG
LONG
LONG
MODE
MODE
MODE
MODE MODE
MODE
MODE
MODE
LONG LONG
MODE
INDEX
AUTOMATIC
RETURN OR
WITH LONG
MODE
BUTTON
BEEP
AUTOMATIC
RETURN OR
WITH LONG
MODE
BUTTON
BEEP
9
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