Zeagle N2ition User manual

p/n 370-9001 ©Copyright 2008 Zeagle Systems, Inc 1/08
Rev. A

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1. PRODUCT SPECIFICATIONS...........................................................................................................5
1. PRODUCT SPECIFICATIONS...........................................................................................................5
1-1. GENERAL ........................................................................................................................................................... 5
1-2.BACKGROUND OF DIVE COMPUTER .................................................................................................................... 5
1-3.FUNCTION SPECIFICATIONS................................................................................................................................. 6
1-3-1.Time mode ..............................................................................................................................................................6
1-3-2.Dive set mode (Gage dive set mode) .............................................................................................................. 10
1-3-3.Dive plan mode ................................................................................................................................................... 11
1-3-4.Dive Log Mode .................................................................................................................................................... 13
1-3-5.Dive profile mode ............................................................................................................................................... 17
1-3-6.PC transfer mode ................................................................................................................................................. 18
1-3-7.Time set mode ...................................................................................................................................................... 19
1-3-8.Dive mode ............................................................................................................................................................ 20
1-3-9.Gage Mode ........................................................................................................................................................... 27
1-4.TECHNICAL SPECIFICATIONS ...............................................................................................................................29
(1)Accuracy ...................................................................................................................................................................... 29
(2)Measurement range ................................................................................................................................................... 29
(3)Operating temperature ............................................................................................................................................. 29
(4)NITROX setting .......................................................................................................................................................... 29
(5)waterproof ability ...................................................................................................................................................... 29
(6)Battery life ................................................................................................................................................................... 29
(7)Sound pattern ............................................................................................................................................................. 30
1-5.UNITS OF MEASUREMENT...................................................................................................................................32
1-6. CAUTION POINTS FOR USER ..............................................................................................................................32
1-6-1. Caution related product handling .................................................................................................................. 32
1-6-2. Battery .................................................................................................................................................................. 33
1-6-3. Diving ................................................................................................................................................................... 33
1-6-4. User care and maintenance ............................................................................................................................. 33
1-7. TROUBLESHOOTING..........................................................................................................................................34
2. DIMENSIONAL SPECIFICATIONS .................................................................................................. 37
2-1. EXTERNAL DIMENSIONS AND MATERIALS ...........................................................................................................37
2-3. SERIAL NUMBER................................................................................................................................................38
3. RELIABILITY TESTING.................................................................................................................. 38
3-1. TEST ITEMS .......................................................................................................................................................38
3-2．TEST METHODS ...............................................................................................................................................39
1, Low temperature operation test .............................................................................................................................. 39

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2, Hi temperature operation test ................................................................................................................................. 39
3,Temperature cycle test .............................................................................................................................................. 39
4,Humidity resistance test ............................................................................................................................................ 40
5,Vibration test ............................................................................................................................................................... 40
6,Drop test ....................................................................................................................................................................... 40
7,Static electricity resistance test ................................................................................................................................40
8,Light resistance（sun-proof）test .......................................................................................................................... 40
9,Weather resistance test .............................................................................................................................................. 41
10,Corrosion resistance test ......................................................................................................................................... 41
11,Water pressure resistance test ................................................................................................................................41
4. QUALITY ASSURANCE STANDARDS ............................................................................................. 41
54-1. INSPECTION METHODS....................................................................................................................................41
4-2. ATTRIBUTE ASSURANCE LEVELS..........................................................................................................................42
4-3. DEFECT DEFINITIONS ........................................................................................................................................42
5. PRODUCT DEFECTS .................................................................................................................... 42
6. PACKAGING SPECIFICATIONS ..................................................................................................... 42
6-1. LOT CONFIGURATION.......................................................................................................................................42
6-2 LABELS...............................................................................................................................................................43
6-3. PACKAGING METHOD .......................................................................................................................................43
7. SHIPMENT AND STORAGE .......................................................................................................... 44
8. OPERATION FLOW CHART........................................................................................................ 45
WARRANTY ................................................................................................................................... 46
NOTES .......................................................................................................................................... 46

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1. Product specifications
1-1. General
This product is the “N2ition” model, a NITROX model that features a plastic case.
Function:
Time,alarm(Dive time alarm, Maximum depth Alarm),GAGE mode,12/24 tense,EL backlight,Dive
information(depth ,dive time, two setting of oxygen ratio,water temperature,surface time, Ascent rate
indicator,warn etc),LOG memory(Maximum 60 dive),profile,profile time setting(15 or 30 seconds),PC
download,Altitude measure,user safety factor etc
1-2.Background of Dive Computer
・The N2ition dive computer performs decompression diving calculations using algorithms developed
by Mr. C. Randy Bohrer based on Swiss-model theory and research. It is intended for use by
individuals who have completed a recognized scuba diving course. Persons who have not taken
scuba diving training or who are not aware of the risks of scuba diving should not use this unit.
・You can use the N2ition dive computer for Nitrox diving where you may set the gas mixture in your
tank. However, individuals who do not understand Nitrox diving or have not taken training in it
should not use the dive computer for NITROX diving. Also, it is very dangerous to set the mixture on
the dive computer at a different value than the mixture in the tank. Always reset each time you dive
and never dive with the incorrect settings.
・The N2ition dive computer is for recreational use and not for professional use.
・The N2ition dive computer is designed with the assumption that you will be doing no-decompression
diving. It also provides decompression diving data just in case, but this is dangerous and should be
avoided.
・The N2ition dive computer’s standard settings assume the user is of average physical strength and in
ordinary health. The individual diver should therefore dive responsibly and make a safe diving plan
suited to him or herself.
・The N2ition dive computer is designed with the assumption that the individual alone will use it.
Therefore if lending it to another person, you should start completely over from the beginning status
(Desaturation time and PGT graph,OLI graph should be 0), and you should never lend it to someone
when doing repeated dives.

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1-3.Function Specifications
1-3-1.Time mode
<Normal> < After a dive >
･The gray square shows a blinking part.
(1)Description of Functions: This mode is usually shown.
•Current time: This is the current time.
•Current date: This is the current date.
•Battery indicator Icon: This displays the current battery voltage.
•PGT (Pressure Gas in Tissue) graph: This indicates the level of Nitrogen with nine level indicators.
•OLI (Oxygen Limited Indicator) graph: This indicates the level of Oxygen limit with eight level
indicators.
•Nitrox Icon: This Icon is ON when NITROX has been set for MIX1 or MIX2.It blinks if the MIX1 and
MIX2 setting is the default setting.
•Desaturation time(DESAT): This indicates the time remaining of nitrogen until the body’s internal
nitrogen is desaturated. The time is counted down to 0:00, it turns off after 1 minute.
•Surface time(SURF.T): This is interval time after dive. Surface time is counted starting from when the
depth shown in Dive mode reaches 1.5 meters (5 feet) or less. If the depth changes back to 1.5 meters
(5 feet) or more in less than 10 minutes, the previous dive mode is continued. Surface time is
continued for 48 hours. After that, surface time is turned off after 1 minute.
•Mode: This is the display, which shows Time mode.
•Don’t Fly Icon: While computer calculates desaturation time,this icon turned on at Time Mode.When
the computer has finished calculating desaturation time and Time Mode is over 12 hours,this Icon is
turned off.
•Gage mode Icon: In gage mode,the Icon is on.
Current time
Current date
Mode
Altitude rank
PGT graph
NITROX Icon
OLI graph
Desaturation time Surface time
Battery indicator
Don’t Fly Icon

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<Battery indicator>
Battery indicator Icon: This displays the current battery voltage, as follows.
When battery voltage is 2.8V or above, battery Icon is OFF.
When battery voltage is 2.6 to 2.7 V, battery Icon blinks.
When battery voltage is less than 2.6 V, battery Icon is ON.
You cannot go to dive mode while the battery indicator Icon is blinking or ON. This Icon can be
displayed during all modes except dive mode.
Measurement of battery voltage is automatically performed during all modes except PC transfer mode
and dive mode.
<Altitude rank>
Altitude rank：The computer automatically measures and calculates the current location's altitude and
displays the corresponding altitude rank. The relation between altitude rank levels and altitudes are
shown below. A new altitude measurement and calculation is made once every ten minutes.
When the altitude is over 6000 meters
(19680 feet), the Icons of altitude rank and
‘Err’ blink and the dive computer cannot be used until the altitude drops to a lower level(under 6000
meters (19680 feet)). The calculations of PGT, OLI and desaturation time are stopped when altitude is
over 6000 meters (19680 feet), and ‘Err’ is displayed. But surfase time is continued to be counted. When
the altitude is less than 6000 meters (19680 feet), the display shown before reaching that altitude is
displayed again once the altitude drops to a lower level. The same displays and processing occur if the
altitude cannot be measured for any reason.
Altitude measurements are made during all modes except dive mode and PC transfer mode. Display of
the current altitude rank Icon occurs in Time Mode and Plan Mode (In dive log mode, a rank at a dive is
displayed.)
Altitude
rank
Altitude range
0 0-900m(0-2952ft)
1 600-1800m(1968-5904ft)
2 1500-2600m(4920-8528ft)
3 2300-6000m(7544-19680ft)
Err Over 6000m(over 19680ft)

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<Switches>
D(wet contacts)
A B
C

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< Altitude Rank 0,1,2,3> < Altitude level Err over 6000 meters (19680 feet)>
(2)Operation of switches
<Normal>
•A: EL back light is on from 4-5 seconds.
•B: Press this switch to move to dive set mode.
•C: EL back light is on from 4-5 seconds.
•D: When water is detected, the mode moves to dive mode.
<Surface condition(=after a dive)>
•A: EL back light is on from 4-5 seconds.
•B: Press this switch to move to dive set mode , but if surface time is less than 10 minutes, the mode
moves to dive plan mode, not dive set mode. (In gage mode, move to gage dive set mode display, but
Blink
Caution
：Even when there is no PGT(=pressure of gas in tissure) graph, a change in the altitude rank will
cause PGT graph to be displayed and desaturation time to be performed.
：Never touch the water detection switch or expose it to moisture when on an airplane or in any
other environment where air pressure can change quickly.
：When the PGT graph is high, a change in the altitude rank may cause nine level indicators to
appear for PGT. To prevent this, never use the dive computer when going to high-altitude
locations, since it will disable dive mode as a safety precaution. Normal function of the dive
computer will be restored when PGT graph drops to 8 or less level.
：Difference of one-minute may occur between when the PGT graph is turned off and when
desaturation time is turned off.
：A battery indicator Icon is used to indicate battery life. Be sure to replace the battery when this
battery Icon appears (ON or blinking).

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if surface time is less than 10 minutes, the mode moves to dive log mode .)
•C: EL back light is on from 4-5 seconds.
•D: When water is detected, the mode moves to dive mode.
1-3-2.Dive set mode (Gage dive set mode)
If surface time is less than 10 minutes after dive, it cannot enter this mode.
･The gray square shows a blinking part.
(1)Description of Functions
•Fraction of oxygen(=FO2): This displays the current setting.
MIX1 setting range: Fraction of oxygen 21-50%、’－－’%.
MIX2 setting range: Fraction of oxygen 21-99%、’－－’%.
•Maximum depth of PO2: Based on the fraction of oxygen, this indicates the water depth where PO2
(=pressure of oxygen) maximum reaches 1.4 (MIX1)or 1.6(MIX2).
In the water depth rank which exceeded the maximum water depth, non-decompression limit become
displayed ‘---’.
•User Safety Factor(=USF): When the level is "0" the usual algorithm is used for calculations. When the
level is “1” and “2”the next higher altitude rank is used for calculations. The default setting is “0”.
•Profiling time: It is the setting of sampling time.The setting range: either 15 or 30 seconds.
•Battery indicator Icon: This displays the current battery voltage.
•Maximum depth Alarm: The alarm generates to sound when it reaches setting depth.
The setting range: 9-99meters(30-320ft),resolution:1 meter(10 feet).
Maximum depth of PO2
User Safety Factor
Fraction of oxygen
Sea/Fresh Icon
Mode
Gage Icon
Profiling time
NITROX Icon
Dive time alarm
Maximum depth
Alarm