ENGLISH
3.3.3.- CNS toxicity display (OLI) . . . . . . . . . . . . . . . . . . . . . . pag. 211
3.3.4.- PO2 alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag. 211
3.4. - Curve dive (Non decompression Dive). . . . . . . . . pag.212
3.4.1. - Ascent rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag.212
3.4.2.- Safety stop (STOP). . . . . . . . . . . . . . . . . . . . . . . . . . . . pag.213
3.4.3.- Decompression forewarning ( ) . . . . . . . . . . . . pag.213
3.5. - Decompression dive (DECO) . . . . . . . . . . . . . . . . . . . pag.213
3.5.1. - Omitted decompression stage alarm . . . . . . . . . . pag.214
3.6. - GAGE (or depth gauge/timer) program . . . . . . . . . . pag.215
3.6.1. - Timer function starting . . . . . . . . . . . . . . . . . . . . . . . pag.215
3.7. - FaEE (or apnoea) program . . . . . . . . . . . . . . . . . . . . pag.216
3.7.1. - Surface interval (SURF) after apnoea /
Apnoea historic memory (HIST). . . . . . . . . . . . . . . . . pag.217
3.7.2. - Apnoea dives historic memory (HIST) reset . . . . . . pag.218
4. - ON SURFACE AFTER A DIVE
4. - On surface after a dive/Data processing . . . . . . . pag.220
4.1.1. - Surface interval after a DIVE program dive
( , , ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag.220
4.1.2. - Surface interval after a GAGE program dive. . . . . . . pag.220
4.1.3. - Surface interval after a FAEE program apnoea. . . . pag.221
4.2. - Dives logbook LOG . . . . . . . . . . . . . . . . . . . . . . . . . . . pag.222
4.2.1. - DIVE program logbook . . . . . . . . . . . . . . . . . . . . . . . . pag.222
4.2.2.- GAGE program logbook. . . . . . . . . . . . . . . . . . . . . . . . pag.223
4.2.3.- FAEE program logbook . . . . . . . . . . . . . . . . . . . . . . . . pag.224
4.3. - Dives historic memory HIST . . . . . . . . . . . . . . . . . . . . pag.225
4.3.1. - DIVE program dives historic memory. . . . . . . . . . . . pag.225
4.3.2.- GAGE
program dives historic memory . . . . . . . . . . . pag.226
4.3.3.- FAEE program apnoeas historic memory . . . . . . . . pag.226
4.4. - Dive profile PAOF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag.227
4.5. - Data PC transfer: compatible PC interface PC . . . pag.227
4.6. - Instrument reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . pag.228
ENGLISH
• CNS oxygen toxicity graphic indicator
• Back-luminescent display
• Incorporated calendar and clock with alarm and time zone
functions
• Logbook (30 hours or last 60 dives) including dive profile
• Dive historic memory
• The instrument may be fully reset, in case of renting
• PC interface (accessory)
1.2. - SAFETY MEASURES.
1.2.1. - Definition of: danger, warning and note.
This handbook presents special notes in order to stress out
very important information.
Before reading the present handbook, please read and
understand well following definitions:
DANGER: indicates a situation (or a procedure), that
might be dangerous to the divers’s health and life itself.
WARNING: indicates a situation (or a procedure), that
might be dangerous to the diver or damage the instrument.
NOTE: stresses important information.
1.2.2. - General recommendations and safety
measures
WARNING: please read the instructions! Read carefully
the present handbook, including the safety measures
paragraphs. Please be sure of perfectly understanding
your instrument’s use, functions and limits before using it!
WARNING: by diving, please be equipped as well with a
depth gauge, a manometer, a timer or watch and dive
tables. Please always check your diving cylinders’ pressure
to be fit to the planned dive and, while diving, often check
the cylinders’ air capacity by means of your manometer.
DANGER: do not dive at high altitudes before the
instrument has automatically started the program corresponding to the altitude at which you are. Please check the
altitude level on the display. Please remember that diving at
higher altitudes than 9.842 ft. above sea level involves a
remarkable increased risk of decompression sickness.
DANGER: before flying, please wait until the icon "No
Fly Time" on your computer display has disappeared.
WARNING: the present instrument’s use is strictly perso-
nal; the information it supplies refer, in fact, exclusively to
the individual who used it during a dive or a series of dives.
DANGER: Cressi-sub discourages the use of this
instrument in decompression dives. In the event that no
decompression has been exceeded, Cressi-sub
computer would be able to supply any information related
to decompression, surfacing and surface interval times.
WARNING: please do not dive using Nitrox mixtures
without checking the content and correct O2 percentage
(FO2). Set your computer with such value, so that it may
correctly process the data; please be advised that the
computer does not accept FO2 decimal values: approximate to the nearest whole number below! (i.e. 35.8% must
be approximated to 35%).
ENGLISH
WARNING: Cressi-sub discourages apnoea dives without
proper training, since the instrument does not replace a
correct information on apnoea diving physiology and risks,
which might be very dangerous to the diver’s safety.
DANGER: Cressi-sub strongly recommends to avoid
any apnoea diving after snorkel dives. Moreover, at least
two hours should elapse since the end of a snorkel dive
before starting an apnoea dive, which anyway should not
exceed the allowed maximum depth of 16 ft.
NOTE: if is set on FAEE (apnoea) program, it is possible
to set DIVE program (both air and nitrox), while it is not possible
to set GAGE during the 48 hours elapsing since last apnoea dive.
As a result of technological advancements/changes, Cressisub reserves the right to modify the instrument without notification.
Cressi-sub underwater computer may be connected
to a compatible IBM personal computer, by means of a
Cressi-sub interface (accessory) and the related Cressi PC
Logbook software (accessory).
Please note that it is very important to read and clearly understand this user’s manual; on the contrary , serious damages to
your health might occur. The present manual will lead the
user to understand all the computer’s functions before using
it while diving.
Cressi-sub computer’s watch and calendar function
are always on (see picture 1), and the related battery consumption is unnoticeable.
Operational functions are easily visible either by depressing
buttons A ( ), B ( ), C ( ), D (),
which will be referred to with the letters A, B, C, D or, underwater, when the contact E gets wet (the dive program turns
on at depths greater than 4 ft.): they are clearly illustrated by
the figures on the display.
NOTE: keep the contact E always clean, remove dirt or
oxide, that might cause its bad functioning, since the set
program would not automatically start. It is recommended to clean the contact. E from time to time, by rinsing it
in fresh water using a soft brush. Dry the instrument, using
a soft cloth.
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AD
C
B
E
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2.2. - Clock functions.
2.2.1. - Clock display.
‘s clock display is always on, and the related battery
consumption is unnoticeable. It shows, in its central part, the
time in hours and minutes; at the bottom, the seconds; at the
top, the week’s day, the calendar’s month and day (picture 1).
This display stays on until the computer gets into water, and
the previously set program starts up.
Depressing button B engages the display back-illumination,
while keeping button C depressed the time related to a previously set time zone (DUAL) will be shown (see picture 2).
By depressing button C after a
DIVE, program dive, the display
will show, in its central part, the time related to a previously set
time zone (DUAL), at the top, the surface time and the desaturation time besides the “Don’t Fly” icon.
Related topics:
• 2.2.2.- Time zone setting.
• 3.1. - DIVE program
• 4.1.1. - Surface interval after a DIVE program
2.2.2. - Time zone setting.
To set a time zone, please depress button A ( ) in
sequence until the (DUAL) icon appears on ’s
display.
By depressing button C ( ) the time zone starts
flashing, waiting for its setting by respectively depressing button C ( ) to advance, or button D ( ) to move
back the hour related to the time zone.
Depress button A ( ) for some seconds in order to
return to the normal clock display (picture 1).
use. Although, it must always be checked that the appropriate altitude adjustments have occurred. The function is carried
out automatically, updating every 10 minutes the atmospheric pressure values and showing the related altitudes levels as
follows:
no icon ( ) - from 0 - 2.625 ft. (picture 1)
-
from 2.625 - 5.250 ft. (picture 1-a)
- from 5.250 - 7.874 ft. (picture 1-b)
- from 7.874 - 19.685 ft. (picture 1-c)
- more than 19.685 ft - out of range
Each icon indicates that the computer has automatically modified its own mathematical model to adjust to proper altitude.
DANGER: Diving at altitudes greater than 9.842 ft.
above sea level involves an increase risk of decompression sickness.
It should be noted that at higher altitudes the nitrogen balance between the human body and the environment is altered.
It is therefore recommended to wait some hours after arriving
before diving, in order to allow a partial release of the excess
nitrogen from your body. The atmospheric pressure at higher
altitudes is in fact lower than at sea level: the diver has additional nitrogen in his body than at the lower altitudes. The
excess is gradually released and the balance re-established
within a couple of days.
At this point, it is important to check:
the low battery indicator should not be on or flashing (picture
4 a-b);
the computer is operating, displaying all liquid crystal segments.
ENGLISH
• PO2 is the maximum partial oxygen pressure, which may be
set by the user on values between 1.0 bar (included) and 1.6
bar (included), by variations of 0.1 bar, obtained at each
depression of button D ( );
WARNING: PO2 is preset on a basic value (default) of 1.4
bar, for both air dives and Nitrox dives. In such way, the
diver is safeguarded since he is following the most conservative values recommended for sport diving. Although,
other PO2 values may be set, as shown in chapter 3.3. The
set value will be memorized in the computer until the diver
chooses a different setting.
• FO2 is the oxygen percentage of the Nitrox mixture. The
diver may vary it on values between FO2=Air (21%) – basic
setting - and FO2=50 % (included), by variations of 1%,
obtained at each depression of button D ( );
NOTE: during the phase of parameters setting, by
depressing button D ( ), the computer will automatically stop on standard Nitrox 1 mixture (EAN 32), with an
oxygen percentage of 32%. By keeping button D ( ),
depressed, it will stop again on (Air) setting. This is to quicken the setting process. Of course, you may set any other
FO2 value, by variations of 1% at each depression of button D ( ), or by quicker increments by keeping the
button depressed.
NOTE: by varying the mixture’s oxygen percentage, the
computer indicates as well the maximum depth (MAX)
which may be reached with that mixture – it depends also
on the set PO2 value (picture 5).
• A Safety Factor may be set by the divers on three values
(SF0/SF1/SF2), obtained at each depression of button D
air; picture 7b, Nitrox) no decompression depths times between 30 and 157 ft., in depth increments of 10 ft. obtained by
depressing button C ( ), or by manual depth
decreases - each of 10 ft. - by depressing button D ( ).
Depress button A ( ) for some seconds in order to get
back to the normal display (picture 1).
NOTE: PLAN function is switched off in GAGE and FAEE pro-
grams and if the computer shows Error.
Related topics:
• 2.4.1. - DIVE program parameters setting
• 3.4. - Curve dive.
• 3.5.1. - Omitted decompression stage alarm. (Error)
• 4.1.1. - Surface interval after a DIVE program.
• 6.1. - Decompression tables
2.5. -
GAGE
(or depth gauge/timer) program para-
meters setting
Cressi-sub computer is equipped with a GAGE (or depth
gauge/timer) program, intended for all those divers who want
to use the instrument as a depth gauge and timer. In such
case, supplies the dive basic parameters, that is depth
and dive time, it may engage a timer function, but it does not
make any computation of tissues saturation and de-saturation, that must be planned and computed by means of proper
software and/or tables.
By the way, la Cressi-sub reminds you that sport dives must be
carried out within the no-decompression guidelines and at the
maximum depth of 132 ft.. This is the limit of sport diving: to
exceed such limits increase the risk of decompression sickness.
ENGLISH
NOTE: in GAGE function the depth gauge supplies indications
between 0 and 655,8 ft.
Related topics:
• 2.7.1. - Maximum depth alarm
• 3.6. - GAGE (or depth gauge/timer) program
2.6. -
FAeE
(or APNOEA) program parameters setting
Cressi-sub computer is equipped with a FAeE (or
apnoea) program, intended for all those divers who want to
use the instrument for apnoea diving, provided they got proper training on all the necessary techniques.
WARNING:
Cressi-sub discourages apnoea dives without
proper training, since the instrument does not replace a correct information on apnoea diving physiology and risks,
which might be very dangerous to the diver’s safety.
NOTE: apnoea diving, especially when deep and protracted, may cause serious risks to occur, as for example prolonged apnoea syncope, which may cause a sudden and
very dangerous loss of consciousness.
DANGER: Cressi-sub strongly recommends to avoid
any apnoea diving after snorkel dives. Moreover, at least
two hours should elapse since the end of a snorkel dive
before starting an apnoea dive, which anyway should not
exceed the allowed maximum depth of 16 ft.
To get to FAeE program depress button A ( ) until the
DIVE menu is visualized, then depress button C ( ),
making the DIVE icon flash. Lastly, depress button D ( ),
and the FAEE will appear (picture 28).
During an apnoea dive, supplies the dive’s basic para-
alarm. The computer is preset on the values of 131 ft. and OFF.
At the end of the dive FAEE program processes the
apnoea dives data using its functions of (LOG) - dive logbook
(chapter 4.2.). (HIST) - dive historic memory (chapter 4.3.) and
(PAOF) - Dive profile (chapter 4.4.). Such functions are specific
for any set program and include a processing memory of
their own which does not affect the computer other
processing programs.
It is possible to reset the daily apnoea memory’s content
(HISTORY), by following the procedures shown in chapter 3.7.2
FAEE program will be memorized in the computer until the
diver changes the program.
Depress button A ( ) for some seconds to revert back
to the normal display (picture 1).
Related topics:
• 2.7.1. - Maximum depth alarm
• 3.7. - FAEE (or apnoea) program
2.7. - Instrument general setting.
2.7.1. - Maximum depth alarm.
All computer ’s programs are equipped with a preset
maximum depth alarm (picture 6b DIVE - program; picture 8a GAGE program; picture 8b - FAEE program) on a value of 132 ft.
limit sport dives. When the function is on (ON), upon reaching
the set maximum depth, a sound alarm will start and the display will flash for three seconds
It is possible to switch on the alarm or vary the maximum
depth: first set the program you want to use by depressing
button A ( ) until the related menu is displayed (picture
ENGLISH
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