xDEEP BLACK EANX User manual

USER’S MANUAL
OLED DIVE COMPUTERFIRMWARE VERSION 2.9.3

32
The xDEEP BLACK EANX is an advanced dive computer, in which we have incor-
porated cutting edge technology and high quality components from the world
leading manufacturers.
While creating the BLACK EANX, we did our best to satisfy your expectations
and make your dives safer and more pleasant. If you have any feedback on the
BLACK EANX, please do not hesitate to contact us. We will be happy to hear
from you.
The BLACK EANX provides a quick and easy way to update the software. It is
necessary for you to register your diving computer on the manufacturer’s
website at the following address: www.genz.pl/support and visit the site occa-
sionally to check whether a new version of software or user’s manual for your
device has been made available.
The BLACK EANX was subject to certification issued by notified body and satis-
fies the requirements of EN 13319:2002 standard „Diving accessories – Depth
gauges and combined depth and time measuring devices – Functional and
safety requirements, test methods”, which was confirmed by the certificate of
conformity CW/GPS/01/2013. The CE marking visible on the instrument indicates
conformity with directive 2001/95/EC.
The BLACK EANX was manufactured by:
GENZ spółka z ograniczoną odpowiedzialnością sp.k.
ul. Ogrodników 3, 43-227 Góra, Poland
Attention: The BLACK EANX consists of built-in lithium-ion battery;
therefore it should be properly disposed of after use. In order to
receive more information on the disposal of devices containing
batteries, contact the vendor or the local authorities.
xDEEP BLACK EANX CONFORMITY WITH EU STANDARDS
As we’re constantly developing BLACK EANX software and
some functions may change or extend, if you come across
any discrepancies download the latest version from the above
mentioned website.
Attention: If a font of this printed manual is too small, you
can download it in .pdf version from: www.genz.pl/support

54
In this manual some information was marked in a special way by presenting it in
a frame with an international symbol. Pay special attention to it.
ATTENTION
This symbol is used to indicate significant practical information
related to the use of the BLACK EANX.
This symbol was used to indicate information and principles
crucial for safety, which, if unknown or not obeyed, may lead
to damage of the device or pose high risk of injuries or death
resulting from incorrect operation of the device.
READ BEFORE USE 1/4
It is likely that the BLACK EANX software still contains some
errors. We put a lot of effort into finding them and tested the
software carefully, but we need to assume that some errors still
remain undetected.
Those errors may cause the device to show incorrect data during
the dive, reset or even completely shut off during the dive.
It must be assumed that BLACK EANX as any electronic device will
fail sooner or later. Electronic devices cannot replace knowledge
and proper training. During the dive never rely only on one source
of information about current depth, dive time and decompression
time and/or no-decompression limits.
Use spare diving computer and device to measure time and depth
and dive tables. Make sure that you can finish the dive safely in
case you lose the diving computer or it will fail during the dive.
Warning!
This manual contains a lot of information very important for your safety.
Therefore, you must read it carefully and understand it before you start diving
with the BLACK EANX. Make sure you understand correctly all information. Oth-
erwise, there is a very significant risk of serious injury or even death resulting
from incorrect use of the device.

76
Before you move to further instructions or/and start using
BLACK EANX dive computer, read carefully all warnings and
information described below and always follow them.
READ BEFORE USE 2/4
• Before you start using the BLACK EANX diving computer, and after reading
this manual, practice using the computer during shallow dives (up to 10m) in
safe conditions within no-decompression limits (NDL).
• Despite the fact that the BLACK EANX displays data on no-decompression
time (NDL) and decompression stops, before each dive with the BLACK EANX
always plan your dive according to the knowledge obtained during the diving
course, using proper tables or computer programs for dive planning (decom-
pression planners).
• The BLACK EANX can never be the only device for measuring depth and time
which you take under water with you. Remember to always have with you a
spare device for measuring the depth and time of dive and dive plan (runtime)
which you can use in case of any failure of the primary device.
• Always take into consideration that as with any electronic device, the BLACK
EANX may also be subject to failure and display incorrect values of the depth,
time of dive or ascent rate despite apparent correct operation. During the dive
compare the readings of your BLACK EANX with a spare device and dive plan
(runtime) prepared before the dive.
• The BLACK EANX is equipped with o-ring seals which do not require any
servicing during the lifetime of the unit. The replacement of batteries should be
performed at a service point authorized by the device producer. Opening the
device by untrained persons may lead to damage of the device or its incorrect
operation.
READ BEFORE USE 3/4
• Use of the BLACK EANX requires knowledge of diving that should be obtained
during proper and correctly conducted diving courses. Therefore, the BLACK
EANX cannot be used by people who did not complete the relevant diving
courses.
• The BLACK EANX diving computer has a set of features useful for advanced
divers who perform accelerated decompression with the use of gas mixtures
containing high level of oxygen. The BLACK EANX does not replace any diving
course. Even if you already have the BLACK EANX but you haven’t finished a
proper course preparing for dives with enriched gas mixtures (EANx, Nitrox),
and with gas switching during the dive, you must NOT use it for such dives.
• Before the first use, set up carefully and understand all parameters, in par-
ticular operation mode, list of gases and conservatism settings.
• For the BLACK EANX diving computer to operate correctly, it is vitally impor-
tant that it is configured in a proper way, used in every single dive and not
used by other people.

98
• Exceeding the max. ascent rate may lead to decompression sickness which
in turn can lead to serious injury or death. Never exceed the optimal and
maximum ascent rates recommended by the diving federation with whom you
completed your diving courses, regardless of the readings of the speed indica-
tor (VSI) displayed by the BLACK EANX.
• Never leave your BLACK EANX within the reach of children and under no cir-
cumstances let the children play with it. Child may choke on small parts, the de-
vice can be damaged and its settings can be changed without your knowledge.
• If you observe incorrect operation of your device or any errors in its soft-
ware, under no circumstance should you use it for diving, instead immediately
contact the producer.
• Never use software from sources other than the website of the producer to
update the device. Such software may contain errors leading to incorrect use
of the device, which may result in injury or even death.
• The BLACK EANX computer is not designed for professional use but only for
recreational purposes. The characteristics of commercial or professional dives
were not considered during the design of the BLACK EANX computer and its use
for such dives may lead to high risk of decompression sickness (DCS) or oxygen
toxicity.
READ BEFORE USE 4/4
The BLACK EANX diving computer calculates no-decompression time (NDL) and
decompression stops using the Buhlmann ZHL16-C algorithm with conservatism
mechanisms based on Gradient Factor. ZHL16-C algorithm was developed by
Prof. Albert A. Bühlmann in Laboratory of Hyperbaric Physiology at the Uni-
versity Hospital in Zürich after over 30 years of research and is recognized by
many experts as the best tested decompression algorithm in technical diving,
including dives at record-breaking depths. The algorithm is based on simulation
of 16 types of tissues of half times from 5.0 to 635.0 minutes for nitrogen and
from 1.88 to 240.03 minutes for helium.
In order to improve safety in repeated and multi-day dives, the BLACK EANX
computer has implemented an algorithm for automatically adjusting the level of
conservatism which shortens the no-decompression limit and extends decom-
pression stops in particular situations, decreasing the risk of decompression
sickness (DCS). The BLACK EANX computer will also activate additional recom-
mended and required stops if it detects that during the dive the rate of ascent
was exceeded. The time limit for those stops depends on the exceeded value.
DECOMPRESSION ALGORITHM 1/3
Attention! Overweight, poor physical condition, cardiovascular
disorders, patent foramen ovale, age above 40 years and other
factors and diseases may lead to increasing the risk of decom-
pression sickness (DCS), despite obeying the principles of correct
diving. No matter if these factors are present or not, before the
dive it is necessary to consult the doctor specializing in diving
medicine, and if needs be, to shorten no-decompression limits
and/or increase the conservatism according to the doctor’s
recommendations.

1110
Attention! The decompression algorithm is based on simulated tissues and
calculates the saturation of tissues with inert gases in a continuous manner –
both during the dive and on the surface. Pay special attention to the following
information that will be displayed every time the device is reset, (e.g. after
discharge of battery or after restart using one of the functions in the menu).
When the computer displays the above-mentioned information it means that
simulated tissues were initialized - information on the residual nitrogen was
deleted. If you dived within the previous 48h, the computer will calculate no-
decompression time (NDL) and decompression stops in a manner that does not
reflect the real saturation of your tissues. Therefore, you must not use the
computer if the above-mentioned information is displayed and you dived within
the previous 48h, since it may lead to decompression sickness (DCS).
Attention! Buhlmann ZHL16-C algorithm implemented in the BLACK
EANX computer as any other algorithm applied in the diving
computers is a theoretical mathematical model which does not
reflect the real processes happening in the human body, but only
in approximate manner simulates the saturation of theoretical
tissues with inert gases and on the basis of that tries to calculate
the remaining no-decompression time (NDL) and the required
decompression stops. It means that no diving computer (including
the BLACK EANX) can 100% prevent the possibility of decompres-
sion sickness (DCS) or oxygen toxicity.
Attention! Diving at depth greater than 40m and/or with the use
of breathing gas mixtures with helium increases the risk truly
enormously. While performing such dives you need to have proper
training completed and you need to take into account that you
really risk your life with this activity.
Attention! Despite the fact that the device is designed to operate
at depth significantly exceeding 100m, due to poorly examined phy-
siological phenomena happening in the diver’s body at such depths,
BLACK EANX as any other diving computer can’t guarantee that the
information displayed assures desaturation of the body to such
level at which there is no risk of decompression sickness (DCS).
DECOMPRESSION ALGORITHM 2/3
Attention! Read carefully the following information and make
sure that you understand it since it is significantly important for
your safety.
DECOMPRESSION ALGORITHM 3/3
Decompression
algorithm
initialized

1312
The BLACK EANX can be fixed on the hand with the supplied strap. In order to
fix it, you need to thread the strap through the holes in the case, as shown in
figure below:
BASIC ELEMENTS
AMBIENT LIGHT SENSOR PRESSURE
SENSOR
USB
PORT
OLED 1.8” SCREEN
MOUNTING POINTS OF STRAP
AND BUNGEE CORDS.
STRAP ASSEMBLY

1514
The BLACK EANX has four holes for bungee cord mounting:
In order to install the bungee cord:
1. Tie a knot at the end of the cord. Next, thread the bungee cord through hole
A so that the knot is placed from the display side.
2. Thread the end of the bungee cord through holes B, C and D. The length of
the knot between holes A-B and C-D should be adjusted to the hand size.
3. Tie a knot in the appropriate place on the free end of bungee cord. Cut the
remaining bungee part and singe it with a lighter.
BUNGEE CORD MOUNTING
It is advisable to tie a knot between points B and C
as protection against the loss of device, in case the bungee cord
should break.
INITIAL START UP OF DEVICE
Attention! At initial start up the BLACK EANX will display informa-
tion “Decompression algorithm initialized”. It means that the
decompression algorithm was initialized and the device stores in
its memory no information on nitrogen retaining in the human
body. It is not allowed to use the BLACK EANX, if you performed
any dives during the previous 48h, as this could lead to a very
high risk of decompression sickness (DCS).
Attention! Before the first use and also directly before each
dive check the settings of the device, in particular the operation
mode, conservative setting and gas configuration.
On initial start up of the device, the BLACK EANX will display the configurator
for setting some basic options (language, date and time, units). After they are
set, the computer will start its surface mode.
When first started, the battery indicator will always indicate total discharge of
the device. This is intentionally set like this during the production process, after
the complete charge, for user’s safety.
After connecting to the charger, the BLACK EANX will indicate subsequent
charging stages and when it detects that the battery is fully charged, value
100% will be displayed. It is a standard procedure resulting from safety mecha-
nisms implemented in this device.

1716
If the BLACK EANX was used during a dive, then after completing the dive the
main screen will display the following information:
• Surface Interval – time in hours since surfacing from previous dive.
• NoFly – minimum time in hours during which you mustn’t travel by plane or in-
crease your altitude. More information on „NoFly” time is available in chapter
„After dive – travelling by plane”.
• OTU – amount of OTU units that were calculated during the last dive.
The count does not include units from previous dives.
• CNS – current value of CNS% count, including CNS% units calculated during
the last dives and decrease in CNS% count resulting from surface interval.
DEVICE START-UP ON THE
SURFACE 1/2
In order to start up the BLACK EANX on the surface, simultaneously press both
buttons briefly with 1s interval several times.
Once done, the BLACK EANX will start up in surface mode and display the follow-
ing information:
To save battery energy, the BLACK EANX turns off after several minutes of
non-operation.
If the device fails to start, the battery is probably discharged. In
such case, connect the charger and then start the device again.
If during the previous 48h there were situations which could
increase the risk of decompression sickness (DCS) the device will
display a warning icon. You need to read information presented
in chapter „After the dive – warning icon”.
04.06.15
16:52
Surf.time: 1:20
Mode: EANx
ALERT ICON (IF DISPLAYED)
BATTERY INDICATOR CURRENT DATE
CURRENT MODE
AFTER DIVE
INFORMATION
CURRENT HOUR
START OF DEVICE ON THE
SURFACE 2/2

1918
The BLACK EANX has two buttons. Each of these buttons detects both a ‘quick
press’ (under 0.5s) and ‘hold’ (over 0.5s).
Button functions for the main screen, additional information screen and com-
pass screen:
In the menu, functions assigned to ‘hold’ are described on the screen:
BUTTONS
HOLD ACTIVATES THE
MAIN MENU SCREEN
FUNCTION ACTIVATED
AFTER HOLDING THE
LEFT BUTTON
FUNCTION ACTIVATED
AFTER HOLDING THE
LEFT BUTTON
Exit Set
HOLD ACTIVATES THE
CONTEXT MENU SCREEN
QUICK PRESS QUICK PRESS
The BLACK EANX has two types of menus:
• Main menu – activated after holding the left button on any screen;
• Context menu – activated after holding the right button on screens which
provide such menu type (e.g. compass).
Menu items include several types of graphical symbols indicating functions
performed by them:
Item including sub-menu. Hold the right button to enter the sub-menu.
Item for setting the value. Hold the right button to enter edit mode and
then by pressing briefly, set the value.
Turn on/off item. Hold the right button to change the state.
MENU OPERATIONS
By pressing briefly both buttons at the same time you immedi-
ately return to the main menu, regardless of the menu level you
are in.

2120
The BLACK EANX enables operation in three operation modes:
• Gauge (BT) – measurement mode. The device does not calculate no-decom-
pression time (NDL) and decompression stops.
• AIR – air computer mode. The device shows NDL time and decompression
stops using only air (21% of oxygen, 79% of nitrogen) for calculations. There is
no possibility to switch gas under the water.
• EANx – simplified nitrox computer mode with the conservatism settings based
on three presets. The device shows NDL time and decompression stops. There
is a possibility to configure up to 3 breathing gas mixtures and switch gases
under the water.
• Adv. EANx – advanced nitrox computer mode with the conservatism settings
based on direct settings of the Gradient Factors. The device shows NDL time
and decompression stops. There is a possibility to configure up to 3 breathing
gas mixtures and switch gases under the water.
SELECTION OF DEVICE
OPERATION MODE 1/2
Attention! The Adv.EANx mode is recommened only for advanced
users, who know and understand Gradient Factors. Other users are
recommened to use EANx mode, which provides the same function-
ality, but the conservatism is set using three preset values.
The current operation mode is shown on the main screen of the surface mode:
You can change the current mode with the use of function Settings >> Mode in
main menu of the device.
SELECTION OF DEVICE
OPERATION MODE 2/2
04.06.15
16:52
Surf.time: 1:20
Mode: EANx
Starting the dive with Gauge (BT) mode in the device will result
in blocking the possibility to change the mode into AIR or EANx
for 48h since the completion of the dive.
CURRENT MODE

2322
The BLACK EANX is equipped with a water sensor that is activated automati-
cally once in contact with water; therefore, it does not require to be turned on
manually before entering the water. It enters diving mode at a depth of 1.5m.
Water sensor was calibrated to detect both salt and fresh water. However, in
particular environments (e.g. mountain lakes) water conductivity is too low for
the sensor to detect it. In such situations, the device will activate through the
pressure sensor at depth of 0.5m.
For the first 30 seconds after entering the diving mode, in a place where
normally no-decompression limit (NDL) is displayed, the device displays the name
of the gas which is active at the start of the dive (primary gas). It’s your obliga-
tion to verify whether this is the same gas that is currently used.
DIVING – DIVE START 1/2
If the battery charge level totals less than 20%, device will not
enter the diving mode and will display message ‘Do Not Dive’.
Always check the battery charge level before entering the water.
Even though BLACK activates automatically, before entering
the water always make sure that the device is switched on and
operates correctly.
DIVING – DIVE START 2/2
The BLACK EANX activates depth and time measuring mode
after entering the diving mode. The max. depth for the device
to activate measuring totals 1.5m.
Attention! The Adv.EANx mode is recommened only for advanced
users, who know and understand Gradient Factors. Other users are
recommened to use EANx mode, which provides the same function-
ality, but the conservatism is set using three preset values.
Attention! If you begin the dive breathing the gas other than
the primary, remember to switch the gas immediately after
start descending. If you fail to do it, the device will include in
the calculations another gas than the one you are actually
breathing, which as a result may lead to incorrect calculation of
decompression stops and no-decompression limits.

2524
The main screen of the device contains all basic information on the current
situation of the dive:
In the Gauge (BT) mode, device shows average dive depth instead of ceiling.
During the dive, in the main menu there are additional functions:
Allows switching of the currently used breathing gas
mixture to another (only in EANx and Adv. EANx mode).
Allows switching to backup gas (only in EANx and Adv.
EANx mode).
Menu for configuration of breathing gas mixtures
(only in EANx and Adv. EANx mode).
Resets the main timer (only in Gauge mode).
This function holds and then restarts the timer once
selected again. When the timer is paused, icon is
displayed.
This function is only available when any alarm is
displayed. It mutes the alarm. Attention: this function
has no impact on alarms that occur after activating
this function.
It resets the average depth (only in Gauge mode).
SWITCH GAS
SWITCH BACKUP
GAS SETTINGS
RESET STOPPER
PAUSE TIMER/
RESUME TIMER
MUTE ALARM
RESET AVERAGE
DIVING – MENU FUNCTIONS DIVING – MAIN SCREEN 1/2
Attention! The Battery charge level indicator specifies only
approximate battery charge level. Always charge the battery
before diving.
VSI
AVERAGE DEPTH
TOTAL DIVING TIME
BATTERY CHARGE LEVEL
INDICATOR IN PERCENTAGES
CURRENT DEPTH
NDL, STOP OR
CURRENT GAS
MAXIMUM DEPTH

2726
While diving with the BLACK EANX in Gauge mode (BT), you can select one of
three layouts of the main screen: full, simplified and minimal. The layouts differ
from one another in terms of the amount of displayed information.
Attention! If you begin the dive breathing a gas other than the
primary one, remember to switch the gas immediately after going
into water. If you fail to do it, the device will include in the calcula-
tions another gas than the one you are actually breathing, which
as a result may lead to incorrect calculation of decompression
DIVING – MAIN SCREEN 2/2
In the AIR, EANx and Adv. EANx modes dive time and ceiling are
shown also in Simple and Minimum layout.
In order to configure the layout of the main screen, select in menu:
Settings >> Layouts >> Main screen
FULL SIMPLE MINIMUM
Attention! Too fast ascent may cause decompression disease
(DCS). Before diving always check correct speed settings for VSI
indicator!
The state-of-the art VSI indicator provides accurate buoyancy control and both
ascent and descent speed. It displays not only the current speed rate in meters
per minute, but also shows the rate in relation to the set optimal and max.
speed. The VSI indicator is displayed on the main screen and compass screen,
to their left.
When maintaining neutral buoyancy, the indicator does not deflect to any
direction. When you start descending or ascending, the indicator will deflect
appropriately down or up. The deflection volume corresponds to the descent or
ascent rates.
The indicator colour depends on ascent/descent rate: standard colour corre-
sponding to the range from zero to optimal rate; warning colour corresponding
to the rate exceeding the optimal one, and alarm colour corresponding to the
rate exceeding the max. one.
DIVING – VSI
9
OPTIMAL ASCENT RATE LEVEL
ASCENT OR DESCENT RATE IN M/MIN.
OPTIMAL DESCENT RATE LEVEL.
GRAPHIC INDICATOR OF CURRENT ASCENT/DESCEND SPEED.

2928
The „Deco info” screen contains additional information related to diving, es-
sential in particular for technical divers during decompression dives or divers
using enriched air:
In the upper part of the screen there is the name of the active gas. Below
there is the following information:
• ppO2 – current oxygen partial pressure with bar graph. Vertical lines in the
diagram indicate in turn levels 1.4 and 1.6 ATA. Exceeding the said levels results
in changing the diagram colour into a warning and then alarm colour.
• GF – current Gradient Factor in the form of percentage value and bar graph
where the edge of the screen indicates the value of 100%.
• CNS – current value of CNS% count. Vertical line in the bar graph indicates
recommended maximum value of CNS%, amounting to 80%.
• OTU – current value of OTU count.
• Surf. CNS – estimated value of CNS% count which is going to be reached after
ascending in compliance with currently calculated decompression.
DIVING – ‘DECO INFO’ SCREEN
The ‘Additional information’ screen provides information on current time, water
temperature and depth diagram (dive profile):
The line colour of the dive profile also shows possible excess of optimal and
max. rates, according to VSI settings. Therefore, it is easy for you to identify
possible irregularities in dive profile (reversed, yo-yo profile, etc.), which may
require extending the decompression stops or increasing the surface interval
before the next dive.
DIVING – ‘ADDITIONAL INFORMATION’
SCREEN
18:30 16°C
35.2
7.6
Temp:
AVERAGE DEPTH
MAX. DEPTH
CURRENT TIME
WATER
TEMPERATURE
DEPTH DIAGRAM
(DIVE PROFILE).

3130
After commencing the dive, the BLACK EANX displays the remaining no-decom-
pression time (NDL) in minutes.
When the remaining no-decompression time amounts to less than 30s, the NDL
value begins to blink to inform the user that the no-decompression limit will be
exceeded very soon.
DIVING WITHIN NO DECOMPRESSION
LIMITS 1/3
To improve safety of the users, the BLACK EANX contains built-in algorithms
defining safety stops either recommended or mandatory, depending on the
dive profile and possible exceeding of the ascent rate. Information on the stop
is displayed instead of no-decompression time (NDL), when the user remains
within the depth of 6m to 3m:
The device displays two types of stops:
• Recommended – displayed in standard colours with notice „STOP”, decompres-
sion ceiling is not displayed.
• Mandatory – displayed in alarm colour with notice „STOP!” (exclamation point),
decompression ceiling is determined at depth of 3m.
DIVING WITHIN NO DECOMPRESSION
LIMITS 2/3
Attention! During the dive within the decompression limits (NDL),
BLACK EANX may display the recommended or mandatory safety
stop. It is absolutely necessary to follow the instructions of the
device. Ascending to the surface when the device displays the
mandatory safety stop will cause automatic adjustment of the
conservatism and hence shortening no-decompression limits for
next 24 hours.
12.0
0
72NDL
--
Ceil: 4' TTS:
NO CEILING
REMAINING
NDL TIME
TIME TO SURFACE 5.0
0
2:49
STOP!
3.0
Ceil: 4' TTS:
REMAINING STOP
TIME
TIME TO SURFACE
CURRENT CEILING
SAFETY STOP
INDICATOR
STOP ZONE INDICATOR

3332
When during a dive, the no-decompression time limit is exceeded, the BLACK
EANX will automatically switch into decompression mode and instead of NDL
it will display information on the nearest decompression stop:
The stops are displayed at depths being the multiple of 3m (or 10 feet in case
of imperial units of measurement).
DECOMPRESSION DIVE 1/4
When the BLACK EANX displays a recommended or mandatory stop, it is neces-
sary to remain the entire time within the depth of 6m to 3m (safety stop zone)
until the moment when the stop time limit is counted down to zero and the
device stops displaying information on the stop. Leaving the stop zone during
this time will result in the count down stopping and it will only activate again
when the user returns to the stop zone.
To make it easier to remain within the stop zone, depending on the current
depth, the BLACK EANX will display one of two icons:
DIVING WITHIN NO DECOMPRESSION
LIMITS 3/3
Warning! Ascending above a depth of 3m, when information on
the mandatory safety stop is displayed is not allowed, and highly
increases the risk of DCS.
In case of subsequent descent to the depth greater than 10m
when information on safety stop is displayed, the time limit for
safety stop is reset and the device will display the total time
again when the user enters the stop zone.
The device counts down the remaining time.
It is necessary to descent immediately to a
depth below 3m. The device stops counting down
the remaining time until this is done.
YOU ARE WITHIN
STOP ZONE
YOU ARE TOO SHALLOW
Attention! Decompression dives can be performed only by divers
having proper licenses for such type of dives issued by recognized
diving federations (TDI, IANTD, PADI DSAT, PSAI, etc.). Recreational
divers should absolutely avoid exceeding the no-decompression
time (NDL)!
CURRENT CEILING
SAFETY STOP
INDICATOR
REMAINING STOP
TIME IN MINUTES
TIME TO SURFACE
STOP ZONE INDICATOR

3534
For optimal decompression, it is necessary for the diver to remain within the
stop zone during the entire time limit. The stop zone stretches between the
current decompression ceiling and the displayed stop depth + 0.5m. Remaining
below the stop depth will result in extending the stop time limit.
To make it easier to remain within the stop zone, depending on the current
depth, the BLACK EANX will display one of three icons of the stop zone indicator:
DECOMPRESSION DIVE 2/4
The displayed stop time limit assumes remaining exactly at the depth
of the stop. Remaining below the depth of the stop will lead to ex-
tending the time limit due to less optimal decompression and slower
desaturation. Therefore, the stop will last longer than the displayed
number of minutes. It will also lead to extending TTS time compared
to the displayed one, and in turn increase the required gas.
Ascend to the stop depth displayed by the device.
Remain within the stop zone until BLACK EANX
displays info on subsequent stop.
Decompression ceiling was exceeded! It is neces-
sary to descend immediately below the depth of
decompression ceiling.
YOU ARE TOO DEEP
YOU ARE WITHIN
STOP ZONE
YOU ARE TOO SHALLOW
Exceeding the decompression ceiling by less than 1m results in a change of the
colour of the stop zone indicator to the warning one. In case of exceeding the
ceiling by more than 1m, the indicator of the stop zone begins to blink and the
colour changes into the alarm one.
When planning the dive, take into consideration the possibility of exceeding the
depth of decompression ceiling. Therefore, always take into account adequate
reserve of gases which will make it possible for you to finish the dive safely in
such a situation. The change of GF High parameter depends on the exceeded
value and max. amounts to 10%.
DECOMPRESSION DIVE 3/4
If the diver remains longer than 30 seconds at a depth of 1m or
more above the current ceiling, the device will display warning
icon and will automatically extend the time of decompression
stops (it will increase conservatism) by changing the value of GF
High parameter. The conservatism will remain at the increased
level for 24h from the moment the ceiling was exceeded. Take into
account that increasing the conservatism may lead to increasing
the amount of gas which you need for decompression.
The decompression stops time displayed by BLACK EANX take into
account the 10m/min rate of ascent. In case of increasing or de-
creasing the rate of ascent, the time limit for the stop may change
before or after reaching the depth of the decompression stop.

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After performing all decompression stops the device will display information
“SURFACE” which means that the diver can slowly ascend to the surface. For
your own safety and good feeling after the dive, after the last stop it is recom-
mended to ascent at the rate of 1m/min.
After completing the last decompression stop the device enters the ascent
mode and does not display no-decompression time until the dive is completed.
Under no circumstances must the diver descend again below 3m after complet-
ing the last decompression stop.
DECOMPRESSION DIVE 4/4
Attention! For your own safety never ascend above the depth
of the decompression stop. Ascending above the decompression
ceiling may lead to decompression sickness (DCS).
The last stop may be determined at 3m or 6m depending on the set-
tings in function “Last stop dep.” in the computer settings. Setting
the stop at 6m may significantly extend the decompression time
limit, and in turn increase the amount of gas needed to complete
the dive. Check the computer settings before each dive!
If the last stop resulting from the decompression algorithm happens
to be longer than the recommended or required safety stop, its time
limit will appropriately be extended.
When the diving plan includes switching gases and they were configured in the
gas configuration menu, then during the dive the computer will suggest switch-
ing gases by selecting the optimal gas at a particular depth.
Before reaching the gas switching depth the BLACK EANX will notifty the up-
coming gas switch by displaying in the upper line information the name of the
gas, symbol „@” and the depth of the switch, e.g. „EAN50 @ 18m”:
The depth at which the BLACK EANX notifies of a gas switch can be set using
function Settings >> Computer >> Sign. Switches. This function also allows the
notifications to be switched off.
DIVING – GAS SWITCH DISPLAY 1/2
Attention! Incoming gas change indicator does not yet mean
the need to switch gas but is only a signal to start preparing
procedure for gas switching.
INFORMATION
ABOUT INCOMING
GAS CHANGE

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At a depth of 0.5m, before reaching the gas switching depth the device will
signal the need to switch gases in the upper line displaying the gas switching
icon with the name of the gas which shall be switched to:
The information about gas switching will be displayed for as long as the device
is not switched to the suggested optimal gas or unless you descend below the
gas switching depth.
DIVING – GAS SWITCH DISPLAY 2/2
Even though the device signals gas switching, until the gas is
manually switched, it still includes in the calculations the gas you
are breathing. Switch to proper gas in the computer immediately
after you physically change the regulators.
„CHANGE THE GAS”
INDICATOR
Gas switching is performed using the function „Switch gas” in the main menu
of the device. The list comprises only gases with the status set to “On” and the
primary gas.
The active gas is marked with selection icon . The gas recommended as opti-
mal is marked with gas switching icon and the cursor will be automatically
placed on it immediately after entering the gas switching menu. Gases which
at the particular depth have too high partial pressure to breathe them safely
are marked on the list in the alarm colour. After confirming the gas switch, the
BLACK EANX will automatically return to the main screen.
DIVING – GAS SWITCHING 1/2
Attention! Always take into consideration that you could have
made a mistake in the gas settings. Before you start breathing the
gas always check MOD marking on the tank and never breathe the
gas below its maximum operational depth (MOD), even if the diving
computer suggests switching to that gas.
2EAN28 ACTIVE GAS
GAS WITH TO
HIGH PPO2 FOR
CURRENT DEPTH
(ALARM COLOUR)
SUGGESTED
OPTIMAL GAS FOR
CURRENT DEPTH
1