Scubapro-uwatec SMART Z Manual

Operating Manual

Smart Z

®

SWISS MADE BY UWATEC AG

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Safety considerations

You must carefully read and understand this entire manual before using your new computer.

Diving has many inherent risks. Even if you follow the instructions of this

manual in a careful manner, it is still possible that you may be seriously injured

WARNING or die from decompression sickness, oxygen toxicity or some other inherent risk of scuba with Nitrox or compressed air. Unless you are fully aware of these

risks and are willing to personally accept and assume responsibility for those risks, do not use the computer!

Guidelines for the use of your UWATEC dive computer:

The following guidelines are derived from the latest medical research and the recommendations of the American Academy of Underwater Sciences for diving with diving computers. Following these guidelines will greatly increase your safety while diving, but cannot guarantee that decompression sickness or oxygen toxicity will not occur.

•This computer is designed for dives with Nitrox (to a max.100% O2) and compressed air (21%O2) only. Do not use the computer for dives made with other mixed gases.

•It is absolutely necessary to check the set mixture before each dive and to compare it to the gas mixture currently used. Always remember: setting an incorrect mixture carries an inherent risk of decompression sickness and/or oxygen toxicity! Maximum deviation from the measured mixture must not exceed 1% O2. An incorrect gas mixture can be lethal!

•Only use this computer with open circuit breathing systems. The computer must be set for a determined gas mixture.

•Only use this computer for diving with an independent breathing apparatus. The computer is not designed for long term exposures with Nitrox.

•Always observe the visual and audible alarm signals of the computer. Avoid situations of increased risk which are marked with a warning sign in this operating manual.

•If the ascent arrow appears, start to ascend.

•If the flashing ascent arrow appears, start to ascend immediately.

•This computer has a ppO2 warning, the default limits of which are set at 1.4 bar ppO2max. This limit can be adjusted via SmartTRAK. An alteration of the ppO2max to higher than 1.6 bar is dangerous and we do not recommend this.

•Frequently check the "oxygen clock" (CNS O2), especially in the range higher than 1.4 bar ppO2. Ascend and finish the dive if the CNS O2 exceeds 75%.

•Never dive deeper than the Maximum Operating Depth (MOD) pertinent to the gas mixture in use.

•Always check the diving limits considering the oxygen content and standard sports diving procedures (decompression sickness, oxygen toxicity).

•In accordance with the recommended maximum diving limit of all instructional agencies, do not dive deeper than 40 metres/130 feet.

•The danger of nitrogen narcosis has to be taken into consideration. The computer gives no warning about this.

•On all dives, with or without dive computer, make a safety stop for at least 3 minutes at 5 metres (15 feet).

•All divers using dive computers to plan dives and indicate or determine decompression status must use their own computer, which they take with them on all dives.

•If the computer fails at any time during the dive, the dive must be terminated, and appropriate surfacing procedures (including a slow ascent and a 3 to 5 minute safety stop at 5 metres /15 ft) should be initiated immediately.

•Comply with the ascent rate and carry out any decompression stop required. If the computer should fail for any reason, you must ascend at a rate of 10m (30 feet) per minute or less.

•On any given dive, both divers in a buddy pair must follow the most conservative dive computer for that particular dive.

•Never dive without a buddy. Smart Z does not substitute for a dive buddy.

•Onlymakedivesthatareappropriatetoyourlevelofdivetraining.Adivecomputerdoesnotincreaseyour knowledge of diving.

2	UWATEC® Smart dive computers

Safety considerations	I
• Always dive with back-up instruments. Make sure that you always use back-up instrumentation
including a depth gauge, submersible pressure gauge, digital bottom timer or dive watch, and have
access to decompression tables whenever diving with a dive computer.
• Avoid repeated ascents and descents (yo yo diving).
• Avoid repeated heavy workload while at depth.		English
• After finishing the decompression or at the end of a no-stop dive, the final stage of the ascent should
• Plan the dives to be shorter if they are made in cold water.
be as slow as possible.
• You MUST be familiar with all signs and symptoms of decompression sickness before using this com-
puter! Seek IMMEDIATE treatment for decompression sickness should any of these signs or symptoms
occur after a dive! There is a direct correlation between the effectiveness of treatment and the delay
between the onset of symptoms and the treatment for decompression sickness.
• Only dive with Nitrox after you have been thoroughly instructed by a recognised institution.
Repetitive dives
• Do not start your next dive before your CNS O2% status has dropped below 40%.
• Diving with Nitrox: Make sure your surface interval is long enough (just like diving with compressed
air). Plan for a minimum surface interval of two hours. Oxygen, too, needs sufficient time to leave
the body.
• Match gas mixture to the intended dive.
• Do not attempt a repetitive dive if the microbubble warning NO	is visible on the display.

•Plan a day without diving once a week.

•If you have to change computers, wait at least 48 hours before carrying out your next dive.

Altitude and diving

•Do not dive at altitudes higher than 4000m (13000 feet).

•After a dive do not rise to altitudes that the computer prohibits via the flashing altitude segments (see page 25).

Flying after diving

•After diving, wait at least 24 hours prior to flying.

Smart Z dive instrument is a personal protective equipment in compliance with the essential safety requirements of the European Union directive 89/686/EEC. RINA SpA, Via Corsica 12, I-16128 Genoa, notified body no. 0474, have certified the conformity with the European Standard EN 250:2000 and EN 13319:2000.

EN250:2000 Respiratory equipment - Open circuit self contained compressed air diving apparatus - Requirements, testing, marking (pressure gauge test).

EN13319:2000 Diving accessories - Depth gauges and combined depth and time measuring devices - Functional and safety requirements, test methods. Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope.

UWATEC® Smart dive computers	3

Introduction

Congratulations on purchasing a Smart Z dive computer and welcome to UWATEC. From now on you will enjoy the assistance of the most extraordinary dive computer - equipped with UWATEC's most innovative technology - while diving.

We thank you for choosing this computer and we hope you will enjoy safe dives in the future! Further information on UWATEC Smart dive computers and other products by UWATEC can be found on our web page at www.uwatec.com.

To make this manual easier to read we will use the term 'Smart Z' as an abbreviation for 'UWATEC Smart Z diving computer' throughout this booklet.

Safety considerations

Dive computers provide divers with data; they, however, do not provide the knowledge how this data should be understood and applied. Dive computers cannot replace common sense! You must therefore carefully read and understand this entire manual before using your Smart Z.

Important remarks concerning signal words and symbols

This operating manual makes use of the following icons to indicate especially important comments:

Remarks	Information and tips which are important for optimal use of the functions of
	Smart Z.

Danger!

Indicates a potentially hazardous situation which, if not avoided, could result WARNING in death or serious injury.

The following symbols are used in the operating manual:

	Flashing display	-> Page reference
		e.g. ->10
Audible signals
4 sec.	Audible attention signal	Audible alarm signal
Instructions for manual input
– + E	Bridge contacts

Example: bridging contacts B and E

B

April 2005, Copyright© by UWATEC Switzerland

4	UWATEC® Smart dive computers

	Quick reference	I
	O2 mix icon (input)	Temperature
	Microbubble level icon (input / MB level reduced)	Do not fly icon
	Logbook icon
		Do not dive icon
	Dive planner icon	Microbubble warning

Current depth	NO	Dive time / No-fly time / SOS duration
	NO	Service icon

	Gauge icon					CNS O2%
	Altitude sections
	Too fast ascent				DECO STOP
	Ascent obligation
					LEVELSTOP
	Maximum depth				NO STOP
	Microbubble level		%
	Maximum Operating
	Depth (MOD)
	O2 mix
			Transmitter warning
	Decompression stop obligation
			Ignored decompression stop

Logbook indicator

Total ascent time / Dive number

Ascent time icon

Desaturation time indicator

No-stop time / Decompression duration / MB no-stop time

Level stop duration / Duration of Microbubble Warning

Desaturation duration / Duration of surface interval

Increased workload warning

Remaining bottom time RBT

Tank pressure warning

	Tank pressure / Gas consumed	Decompression depth / Level stop depth
	Partial pressure of oxygen ppO2	Oxygen toxicity CNS O2%
	Level stop indicator
		Ascent rate
	No-stop indicator	Battery capacity
	Decompression stop indicator

English

Operating scheme

Start / Confirmation / Enter

+ / Navigate

– / Navigate

Display switched off

Switching on

Dive planner				Logbook		O2 mix		Microbubble level		Gauge mode
					Navigation
(				)	%
	+	Surface
	–	interval			CNS O2%	%
					Battery capacity	+	Percentage
			CNS O2%	%		–	of oxygen
								+		+
									Microbubble		Gauge mode
		NO STOP						–	level	–	on and off
	%
				+	Dive number
		+		–		+	operatingMaximum
			Bottom time
		–				–	depth (MOD)
		Exit (2 sec.)		Exit		Confirmation		Confirmation		Confirmation

Display switches off automatically after 3 minutes without operation.

UWATEC® Smart dive computers	5

List of chapters

I	Safety considerations		___________________________________2
	Introduction		___________________________________4
	Important remarks concerning signal words and symbols ______________________________4
	Quick reference / Operating scheme		___________________________________5
	List of chapters		___________________________________6
II	System and operation		___________________________________8
1	System description		___________________________________8
2	Operation		___________________________________8
	2.1	Operating elements	___________________________________8
	2.2	SmartTRAK	___________________________________9
	2.3	Switching on the display	__________________________________10
	2.4	Checking the battery capacity	__________________________________10
	2.5	Selection and activation of user functions	__________________________________10
	2.6	Active backlight	__________________________________11
	2.7	Switching off the display	__________________________________11
3	SOS mode		__________________________________11
4	Setting up Smart Z		__________________________________12
	4.1	Mounting of transmitter	__________________________________12
	4.2	Pairing of transmitter and dive computer	__________________________________13
III	Diving with Smart Z		__________________________________15
1	Terminology / Symbols		__________________________________15

1.1General terminology / Display during no-stop phase __________________________________15

1.2Display during decompression phase /

	Remaining Bottom Time	__________________________________15
1.3	Nitrox information (O2 information)	__________________________________16
2 Attention messages and alarms		__________________________________17
2.1	Attention messages	__________________________________17
2.2	Alarms	__________________________________17
3 Preparation for the dive		__________________________________18
3.1	Setting the gas mixture and MOD	__________________________________18
3.2	Setting the MB level	__________________________________18
3.3	Preparation for the dive and function check	__________________________________18
4 Functions during the dive		__________________________________19
4.1	Immersion	__________________________________19
4.2	Dive time	__________________________________19
4.3	Current depth	__________________________________19
4.4	Maximum depth	__________________________________19
4.5	Temperature	__________________________________19
4.6	Ascent rate	__________________________________19
4.7	Partial pressure of oxygen (ppO2) / Maximum Operating Depth (MOD) ___________________20
4.8	Oxygen toxicity (CNS O2%)	__________________________________21
4.9	Tank pressure	__________________________________21
4.10 Remaining Bottom Time (RBT)		__________________________________22
4.11 Decompression information		__________________________________22
5 Functions at the surface		__________________________________24
5.1	End of a dive	__________________________________24
5.2	Desaturation time	__________________________________24
5.3	No-fly time	__________________________________24
5.4	Microbubble warning	__________________________________24

6	UWATEC® Smart dive computers

List of chapters			I
6	Diving in mountain lakes		__________________________________25
	6.1	Altitude ranges	__________________________________25
	6.2	Prohibited altitude	__________________________________25
	6.3	Decompression dives in mountain lakes	__________________________________25
IV	Gauge mode		__________________________________26
V	Diving with microbubble levels (MB)		__________________________________28
1	Comparison of dives with MB level L0 and MB level L5		__________________________________28
2	Terminology		__________________________________29
	2.1	Display during microbubble (MB) no-stop phase	__________________________________29
	2.2	Display during level stop phase	__________________________________29

3Preparation for a dive with microbubble levels (MB levels) __________________________________30

	3.1	Setting the MB level	__________________________________30
4	Functions during the dive with microbubble levels		__________________________________30
	4.1	Level stop information	__________________________________30
	4.2	Total time of ascent	__________________________________31
	4.3	Decompression obligation	__________________________________31
	4.4	Level stop and deco stop	__________________________________32
5	Complete a dive with MB levels		__________________________________32
VI	Dive planner		__________________________________33
1	Planning a no-stop dive		__________________________________33
2	Planning a decompression dive		__________________________________34
3	Leaving the dive planner		__________________________________34
VII	Logbook		__________________________________35
1	Survey		__________________________________35
2	Operation		__________________________________35
VIII Appendix			__________________________________36
1	Technical information		__________________________________36
2	Maintenance		__________________________________36
	2.1	Replacing the battery of the transmitter	__________________________________36
3	Conversion of tank pressure		__________________________________38
4	Warranty		__________________________________38
5	FCC		__________________________________39
6	Index		__________________________________39

English

UWATEC® Smart dive computers	7

II System and operation

1 System description

Smart Z displays all important dive and decompression data and comes with a unique receiver which can receive tank pressure data from a transmitter. Mounted at the high pressure (HP) outlet of the regulator, the transmitter measures the tank pressure and radio transmits the information to Smart Z. UWATEC's specially patented transmission process prevents interference and ensures continuous and reliable reception.

Smart Z has a data memory which stores the dive data. The data can be transmitted with an infrared interface (IrDA) and the SmartTRAK software to a Windows® personal computer.

The SmartTRAK CD software is included with the Smart Z Package. Infrared interfaces are available in PC stores. A list of recommended interfaces is available on the UWATEC homepage (www.uwatec.com).

Infrared port	SmartTRAK

Pressure transmitter	Infrared Interface
	(option)

2 Operation

On page 5 you will find an operating schematic.

2.1 Operating elements Contacts

Smart Z has 4 operating contacts B, E, +, – on the outside of the housing. For manual operation, touch base contact B and any one of the other three contacts above the display with moistened fingers («bridging» contacts).

Contact B: Base contact, which has to be touched for all operations.

Contact E: Enter contact. It serves to switch on Smart Z and to confirm or enter the displayed value. It is therefore comparable to the ENTER or RETURN key of a keyboard.

+ / – Contacts: These allow to navigate between menus and, once inside a menu, to increase or decrease the indicated value.

8	UWATEC® Smart dive computers

II System and operation

II

2.2 SmartTRAK

With SmartTRAK you can transfer dive data to a personal computer and graphically display the data.

The following settings may be changed with SmartTRAK:
• Unit system	metric/imperial
• Audible attention signal suppression	selective
• Gauge mode	on / off
• Depth alarm	5 - 100 m (20 - 330 feet)
• Backlight illumination duration	2-12 sec.
• Maximum partial pressure of oxygen (ppO2 max)	1-1.95 bar
• Time limit to reset the O2 % mix to air	no reset / 1 - 48 hrs.
• Minimum reserve pressure at the end
of the dive (basis for RBT calculation)	20 – 120 bar (300 - 1750 psi)
• Tank pressure alarm	50 - 200 bar (750 - 2900 psi)
• Workload sensitivity	25 steps
The following data may be recalled with SmartTRAK:
• Number of past dives
• Total duration of past dives
• Atmospheric pressure
• Pairing information
• Dive profile
• Logbook
• Temperature curve
• Workload curve
• Alarms and attention messages

English

UWATEC® Smart dive computers	9

2 Operation

2.3Switching on the display

•automatically, on submerging in water or when adaptation to atmospheric pressure is necessary;

•manually, by bridging contacts on housing (B-E).

NO

NO

CNS O2%

DECO STOP

LEVELSTOP

NO STOP

%

Temperature

O2 Mix

%

Do not fly icon

NO

No-fly time

CNS O2%

Oxygen toxicity

Desaturation time

%

•When Smart Z is in state of rest no information is displayed but the atmospheric pressure is continuously monitored. If a higher altitude range is detected, Smart Z switches on for 3 minutes automatically -> 25.

•Smart Z switches on by bridging the contacts B and E. All segments light up for 5 seconds.

Afterwards the display shows the selected O2 mix, the temperature and in certain circumstances an altitude range ->25.

If the transmitter is switched on and located within transmitting distance, the tank pressure is displayed, otherwise "---" will be displayed. If no transmitter has been paired yet, the display will be blank.

If there is a remaining saturation due to the last dive or change of altitude, Smart Z also displays the remaining desaturation time, the oxygen toxicity and the "no-fly time" ->24.

2.4 Checking the battery capacity

			After switching on Smart Z you can check the battery capacity by bridging
			the contacts B and E. The remaining capacity is displayed for 3 seconds as
			a percentage. If the value reaches 0%, the battery warning gets activated
			(->17) and the battery has to be replaced by an authorised SCUBAPRO UWATEC
	Battery capacity		dealer.
			For a 7-day diving vacation Smart Z uses between 2 – 5 % of its battery capacity.
	2.5 Selection and activation of user functions

Gauge mode ->26

Input microbubble level ->30 Input O2 mix ->18

Logbook ->35 Dive planner ->33

At the surface you can select the dive planner, the logbook and gauge mode as well as the functions to enter the O2% mix and the microbubble levels by bridging the contacts + and B or – and B.

After the selection of the desired function you can activate and deactivate it by bridging the contacts B and E.

Details to the user functions are to be found on the pages mentioned above.

10	UWATEC® Smart dive computers

2 Operation / 3 SOS mode	II
2.6 Active backlight
	The display of Smart Z can be illuminated both on the surface
	and underwater.
	The backlight can be activated by pressing on top of the case.
	The light will turn off automatically after 8 seconds or after the
	time selected via SmartTRAK.
	The backlight can only be activated if the computer display is
	on.

English

2.7 Switching off the display

On the surface Smart Z switches off automatically after 3 minutes without operation.

3 SOS mode

Time remaining until SOS mode switches off automatically

NO

NO

CNS O2%

%

Activation: automatic

If the diver remains above a depth of 0.8m (3 feet) for more than three minutes without observing a prescribed decompression, the computer will automatically switch into SOS mode after the dive.

The display shows the "SOS" sign and the remaining length of the SOS mode. The dive will be entered in the logbook with "SOS". Other than that the SOS mode has no further impact on the displays and functions on the surface.

• Serious injury or death may result if a diver does WARNING not seek immediate treatment should any signs or symptoms of decompression sickness occur

after a dive.

•Do not dive to treat symptoms of decompression sickness!

•Diving in SOS mode is extremely dangerous and you must assume full responsibility for such behaviour. UWATEC will assume no liability.

Once in the SOS mode, the computer will lock up and will be inoperable as a diving instrument for 24 hours.

A diving accident can be analyzed at any time in the logbook and downloaded to a PC by means of the infrared interface (IrDA) and the SmartTRAK software.

UWATEC® Smart dive computers	11

4 Setting up Smart Z (transmitter and dive computer)

4.1 Mounting of transmitter

The transmitter is mounted at the high pressure (HP) outlet of the regulator’s first stage before the first dive.

WARNING	Use air and Nitrox components in accordance with the law of the country.
Procedure:

(Adaptor)

HP

Do not hold the transmitter by its plastic part.

Mount the transmitter at the HP	Tighten the transmitter by
oulet. If the threads do not match,	means of a size 3/4" wrench.
you can get a fitting adaptor at your
diving equipment retailer.

The transmitter is best mounted laterally on the regulator.

It is advisable to mount the transmitter on the same side that the computer is located. This is the optimal position for transmission.

Position of the transmitter	Position of the transmitter
for left handers.	for right handers.

Position of the transmitter for left handers, if there is no connection possible on the left hand side.

Position of the transmitter for right handers, if there is no connection possible on the right hand side.

12	UWATEC® Smart dive computers