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BEFORE DIVING
SET MODE: Setting of dive mode.
As noted, once switched to the "dive computer" mode the display is in the PRE DIVE mode. This displays the
settings for the dive. The parameters can be changed by repeatedly pressing the UP ( to scroll the menu) or
DOWN ( to go back to the menu) button until the screen shows the MODE SET (MODE-S) and setting the AIR
or NITROX mode according to the type of dive you want to perform. Newton allows, in fact, all types of dives, Air
dive, Nitrox dive, and dives with two different hyper-oxygenated mixtures selected, if previously set, in any
moment of the dive.
MODE-S AIR
In this mode you can dive using only air with partial oxygen pressure set in a standard value of 1.4 bar. Once
you choose this mode, by accessing the next menu DIVE SET (DIVE-S) you will be able to modify only the
Deep Stop, Safety Factor (SF) and Altitude (Alt) settings.
MODE-S NITROX
In the NITROX mode you can dive using one or two hyper-oxygenated mixtures MIX1 and MIX2.
Once this mode is selected, you can access the next menu DIVE SET (DIVE-S) to modify MIX1 for the first
mixture or bottom mixture and then MIX2 for the secondary mixture or decompression respectively.
Mix1 is the main mixture, the one we can use for all type of dives or simply for the descent, deep end and partial
ascent phase and it can be set with values between 21% and 50% with O2 variations of 1%.
Mix2 is the secondary mixture or decompression mixture, the one we can use in the ascent phase where the
stop is carried out and it can be set with values between 21% and 99% with O2 variations of 1%.
To dive with one Nitrox mixture it is enough to set only the parameters of Mix1 and use such mixture during the
whole dive.
To dive with two mixtures, you have to set the parameters for both mixtures (Mix1 and Mix2) taking into account
(as said before) that Mix1 is the bottom mixture and Mix2 is the decompression mixture.
During dive when the depth allows it, you will be able to change the mixture in the mode described in the "dive
with nitrox: gas switching" paragraph.
The other accessible settings in DIVE-S once entered in NITROX mode are:
Mix1 and eventually Mix2 Partial Oxygen Pressure (PO2) setting;
Mix1 and eventually Mix2 Percentage or Fraction of Oxygen (FO2) setting;
Dive safety factor (SF);
Altitude (Alt.);
Deep Stop.
DANGER: Cressi discourages diving with gaseous mixtures other than air without proper training. The
use of “technical” multi-gas mixtures may expose the diver to different risks than those of recreational
diving, including serious physical damages and, in extreme cases, death.
IMPORTANT: If the screen displays the battery icon with a single segment on, the computer MUST NOT
be used. The battery can be replaced by the user, as we shall see in the corresponding chapter.
To set the MODE-S NITROX mode, press the Mode button after selecting the MODE SET (MODE-S)
menu. Then, by pressing either the UP or DOWN button, the flashing word "Air" at the top right, will be
replaced by the word "Nit" (NITROX). Then confirm the value set by holding down the Mode button to
return to the main menu (after a beep). If the Mode button is not pressed as described, the computer will
modify settings automatically, issue a beep, and return to the main screen.
MODE-S MODE
AUTOMATIC
RETURN OR
WITH LONG
MODE BUTTON
BEEP
INDEX
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