Tusa ZEN AIR IQ-950 Owner'S Manual Download Page 125

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126

When the Conservative Factor feature is set On, allowable dive times are calculated

based upon the next higher 3,000 foot (915 meter) Altitude. All adjustments for

Altitudes greater than 11,000 feet (3,355 meters) are then made to allowable dive

times for 14,000 feet (4,270 meters). If the Conservative Factor is set On while at

Sea Level, calculations are based upon an Altitude of 6,000 feet.

The ZEN AIR will not function as a Dive Computer above 14,000 feet (4,270

meters).

PO2

(ATA)

0.60

0.70

0.80

0.90

1.00

1.10

1.20

1.30

1.40

1.50

1.60

Max Duration

Single Exposure

(min) (hr)

720 12.0

570 9.5

450 7.5

360 6.0

300 5.0

240 4.0

210 3.5

180 3.0

150 2.5

120 2.0

45 .75

Max Total Duration

24 Hour Day

(min) (hr)

720 12.0

570 9.5

450 7.5

360 6.0

300 5.0

270 4.5

240 4.0

210 3.5

180 3.0

150 2.0

OXYGEN EXPOSURE LIMITS

(from NOAA Diving Manual)

Summary of Contents for ZEN AIR IQ-950

Page 1: ......

Page 2: ... OPERATION AS A DIVE COMPUTER 12 AUDIBLE ALARM 12 BACKLIGHT 14 POWER SUPPLY 15 WATCH FEATURES AND DISPLAYS 17 LOCAL DEFAULT TIME 18 MAIN TIME 19 Set Main Time 20 ALTERNATE TIME 24 Set Alternate Time 25 COUNTDOWN TIMER 26 Set CDT 27 CHRONOGRAPH 28 DAILY ALARM 29 Set Daily Alarm 30 DIVE COMPUTER FEATURES AND DISPLAYS 31 BAR GRAPHS 32 ALPHA NUMERIC DISPLAYS 34 ...

Page 3: ...et FO2 Gas 1 45 Set FO2 Gas 2 3 46 Set FO2 50 Default 47 SET A GROUP ALARMS 47 Set Audible Alarm 47 Set Depth Alarm 48 Set EDT Alarm 49 Set NiBG Alarm 49 Set DTR Alarm 50 Set Turn Alarm 50 Set End Alarm 51 Set PO2 Alarm 51 SET U GROUP UTILITIES 52 Set Wet Activation 52 Set Units of Measure 53 Set NORM Deep Stop 53 Set NORM Safety Stop 54 Set Conservative Factor 54 Set Backlight Duration 55 Set Sam...

Page 4: ...E REMAINING DTR 70 Oxygen Accumulation Time Remaining OTR 71 Air Time Remaining ATR 71 ATR Alarm 72 ASCENT RATE INDICATOR ASC 73 NORM NO DECO DIVE MODE 74 No Deco Deep Stop 76 No Deco Safety Stop 78 CAUTIONARY MODES 79 DECOMPRESSION 80 VIOLATION MODES 82 HIGH PO2 88 HIGH O2 89 SWITCHING GAS MIXES AND TRTS 91 SWITCHING NORM 92 NORM POST DIVE MODES 95 POST DIVE FIRST 10 MINUTES ON SURFACE 96 POST DI...

Page 5: ...Set DA 1 2 3 109 FREE DIVE DISPLAYS 110 FREE DIVE ALARMS 111 REFERENCE 115 CARE AND CLEANING 116 INSPECTIONS AND SERVICE 116 ZEN AIR BATTERY REPLACEMENT 117 TRT BATTERY REPLACEMENT 121 INSTALLING A TRANSMITTER ON A REGULATOR 123 TRANSMITTER COMPATIBILITY WITH NITROX 124 ALTITUDE SENSING AND ADJUSTMENT 125 CHART OF OXYGEN EXPOSURE LIMITS 126 CHARTS OF NO DECOMPRESSION LIMITS AT ALTITUDE 127 SPECIFI...

Page 6: ...678 Ascent Rate Indicator U S Patent no 5 156 055 CE The CE mark is used to mark conformity with the European Union EMC directive 89 336 EEC TUSA dive instruments fulfill the required EU directives EN 13319 Diving accessories Depth gauges and combined depth and time measuring devices Functional and safety requirements test methods is a European diving depth gauge standard The ZEN AIR is designed t...

Page 7: ... not displayed Upon waking the ZEN AIR up the correct Date and Pacific Time will be displayed and it will be ready to operate with full functions To wake the ZEN AIR up from Deep Sleep mode simultaneously depress the upper right S and lower left A buttons for 2 to 3 seconds until the display comes full ON displaying the MAIN TIME screen then release them NOTE Once the ZEN AIR is brought out of the...

Page 8: ...9 FEATURES AND DISPLAYS ...

Page 9: ... only provides the person using it with data not the knowledge to use it CONTROL BUTTONS The ZEN AIR features four Control Buttons that allow you to select mode options and access specific information They are also used to link the Transmitter s enter Settings activate the Backlight and acknowledge the Audible Alarm Throughout this manual they will be referred to as the M S L and A buttons Upper L...

Page 10: ...sequence or for 2 minutes if no button is pressed The Chronograph remains on display as long as it is running unless another Mode is accessed When Wet Activation is set On the ZEN AIR will enter selected Dive Mode upon descent to 5 FT feet 1 5 M meters for 5 seconds regardless of what operating mode it is in WARNING When Wet Activation is set OFF the ZEN AIR must be in Dive Surface Mode NORM GAUG ...

Page 11: ...ith the ZEN AIR GAUG Mode only allows access to Battery Transmitter Status Fly Log and History Modes It also displays Tank Pressure FREE Mode only allows access to ZEN AIR Battery Status Log and History Modes It does not display Tank Pressure AUDIBLE ALARM Most warning situations that activate the Audible Alarm while operating in NORM or GAUG Mode will sound 1 beep per second for 10 seconds or unt...

Page 12: ...int selected High O2 of 300 OTU single or daily exposure Nitrogen Bar Graph at the segment Set Point selected NORM GAUG Ascent Rate exceeds 60 FPM 18 MPM when deeper than 60 FT 18 M or 30 FPM 9 MPM at 60 FT 18 M and shallower Loss of the active Transmitter Link signal for more than 15 seconds during a dive Entry into Decompression Mode Deco Conditional Violation above a required Deco Stop Depth fo...

Page 13: ...on 3 beeps 3 times Free Dive Mode Countdown Timer reaches 0 00 each 3 beeps 3 times During the following NORM Dive situations the 10 second continuous tone will be fol lowed by a 5 second steady beep that will not turn off when acknowledged Ascending above a required Decompression Ceiling Stop Depth for more than 5 minutes referred to as a Delayed Violation Decompression requires a Ceiling Stop De...

Page 14: ...isplay screens Fig 3a as an indication that the Battery should be changed prior to commencing a series of dives If the ZEN AIR s voltage decreases to the Alarm level 2 50 volts the Battery icon will flash and the message CHG BAt will scroll Fig 4a for 5 seconds then operation will automatically revert to Main Time Mode The ZEN AIR would then only operate in Watch modes until the Battery becomes co...

Page 15: ...s the S button for 2 seconds while viewing the Surface Main then release it As the button is depressed the ZEN AIR s Receiver will activate if in NORM or GAUG Mode 2 seconds later the ZEN AIR s Battery status will be displayed for 3 seconds Fig 5 then if active and linked TRT 1 s Battery status will be displayed for 3 seconds Fig 6A then if active and linked TRT 2 s Battery status will be displaye...

Page 16: ...17 WATCH FEATURES AND DISPLAYS ...

Page 17: ...ren tial is the current Time displaying Am or Pm at a remote travel location Upon arrival at the location Alternate Time can be interchanged with Main Time to make it the Local Default Time while visiting the travel location The M button will then access the screens in this sequence Alternate Time Main Time Countdown Timer Chronograph Daily Alarm While viewing Alternate Time depressing and holding...

Page 18: ... WED THU FRI SAT SUN Month and Day Day and Month if set for Metric Time of Day hr min sec with AM or PM icon if 12 Hour Format no icon if 24 Hour Battery icon if a Low Battery Condition exists M repeatedly 2 sec each time will step through Main Watch Modes M 2 sec will access Dive Computer Surface Mode NORM GAUG or FREE A 2 sec will access NORM GAUG Log and History Modes A 2 sec will access the AL...

Page 19: ...TIME This mode allows the Date and Time of Day to be set which will also serve as the basis for Watch Alternate Time values Set screens Date Format Hour Format Time Date Day of the Week is set automatically when the Date is set When the ZEN AIR is operating in Dive Computer mode Date is displayed only to identify dives when they are accessed in the LOG Mode A repeatedly 2 sec each time will step t...

Page 20: ...eft of Day D M means Day will be displayed to the left of Month S 2 sec will toggle between M D and D M A 2 sec will save the Set Point and access the Set Hour Format screen with the Set Point flashing Set Hour Format The Set Hour Format screen displays the graphic HR with the clock icon and the Set Point 12 or 24 flashing Fig 12 S 2 sec will toggle between 12 and 24 A 2 sec will save the Set Poin...

Page 21: ...a time A 2 sec will save the Hour Set Point and the Minute digits will flash S hold will scroll upward through the Minute Set Points in 1 minute increments at a rate of 8 per second S repeatedly 2 sec each time will step upward through the Set Points one at a time A 2 sec will save the Minute Set Point and access the Set Date screen Set Date Upon access the Set Date screen displays the graphic YMD...

Page 22: ...r second S repeatedly 2 sec each time will step upward through the Month Set Points one at a time A 2 sec will save the Month Set Point and the Day digits will flash S hold will scroll upward through the Day Set Points in 1 Day increments at a rate of 8 per second S repeatedly 2 sec each time will step upward through the Day Set Points one at a time A 2 sec will save the Date setting and revert to...

Page 23: ...ily Alarm is set On Time of Day hr min sec with AM or PM icon Graphic ALt indicating Time as Alternate remote Battery icon if a Low Battery condition exists M 2 sec will access the Watch CDT Countdown Timer S 2 sec will silence and acknowledge the Daily Alarm S 2 sec will interchange ALT Time with Main Time making ALT Time the local Watch Default Time screen L press will activate the Backlight M 2...

Page 24: ...hic OFF Fig 16A or numeric Fig 16B flashing Graphics SEt and ALt S hold will scroll through the Set Points in increments of 1 Hour at a rate of 8 per second S repeatedly 2 sec each time will step upward through the Set Points one at a time A 2 sec will save the Set Point and revert to the Watch ALT Time screen M 2 sec will revert to the Watch Default Time screen If no button is pressed during a pe...

Page 25: ...down will run in the background until it counts down to 0 00 or it is set OFF or a Dive is made at which time it will default to OFF and the value previously set When a set Countdown Time reaches 0 00 the Audible Alarm will sound S 2 sec will toggle between ON and OFF A toggle to ON will Start the Timer if a Time has been set A and S simultaneously 2 sec will access Set Watch CDT L press will acti...

Page 26: ... flash S hold will scroll upward through the Minute Set Points in 1 minute increments at a rate of 8 per second S repeatedly 2 sec each time will step upward through the Set Points one at a time A 2 sec will save the Minutes Set Point and revert to the CDT Status screen with the graphic OFF flashing in place of the graphic SEt Fig 18B S 2 sec will toggle from OFF to ON and Start the Timer M 2 sec ...

Page 27: ...n Laps are frozen and when later recalled Subsequent presses of S 2 sec each time will freeze Lap Times LAP 1 through LAP 9 After 9 Laps are recorded additional Laps will replace LAP 9 shift the others to lower LAP numbers while discarding LAP 1 If the Timer reaches 9 59 59 99 hr min sec 1 100 sec it will stop and save that number as a LAP Subsequent presses of S will then have no effect A 2 sec w...

Page 28: ...iewing the Watch Default Time screen will access the Daily Alarm Status screen Information provided includes Fig 21 Graphic AL and clock alarm icon Graphic ON or OFF flashing Alarm Time Set Point hr min with AM or PM icon S 2 sec will toggle between ON and OFF Upon being toggled to ON the Alarm will be set to sound every day at the Time displayed A and S simultaneously for 2 sec will access Set Da...

Page 29: ...tep upward through the Set Points one at a time A 2 sec will save the Hour Set Point and the Minute digits will flash S hold while the Minute digits are flashing will scroll upward through the Set Points in 1 Minute increments at a rate of 8 per second S 2 sec will step upward through the Set Points one at a time A 2 sec will save the Set Point and revert to the Daily Alarm Status screen indicated...

Page 30: ...31 DIVE COMPUTER FEATURES AND DISPLAYS ...

Page 31: ...l diving The Nitrogen Loading Bar Graph monitors 12 different nitrogen compartments simultaneously and displays the one that is in control of your dive It is divided into a No Decompression normal zone a Caution zone also No Decompression and a Decompression danger zone While you cannot provide a guarantee against the occurrence of decompression sickness you may choose your own personal zone of ca...

Page 32: ...4b provides a visual representation of ascent speed i e an ascent speedometer The segments of the ASC represent two sets of speeds which change at a reference Depth of 60 FT 18 M Refer to the chart for segment values WARNING At depths greater than 60 FT 18 M ascent rates should not exceed 60 FPM 18 MPM At depths of 60 FT 18 M and shallower ascent rates should not exceed 30 FPM 9 MPM ASC values Dee...

Page 33: ...b and Maxi mum Depth which is on an Alternate Display Fig 26a indicate Depths from 0 to 330 FT 100 M in increments of 1 FT 1 M During a No Deco Safety Stop the set Stop Depth is displayed and during Decompression required Stop Depth is displayed Time and Date Most Time displays like Time of Day Fig 26b are shown in hour minute format i e 9 46 represents 9 hours and 46 minutes not 946 minutes The c...

Page 34: ...hat Date is displayed is on Log Preview screens that identify dives When above the sea level range which extends up to 3 000 feet 915 meters Altitude is displayed on the Watch and Dive Computer Surface Alternate screens as EL Elevation Level from 2 up to 7 EL2 3 001 to 5 000 feet 916 to 1 525 meters EL3 5 001 to 7 000 feet 1 526 to 2 135 meters EL4 7 001 to 9 000 feet 2 136 to 2 745 meters EL5 9 0...

Page 35: ...tive dives using enriched nitrogen oxygen mixtures can lead to oxygen buildup reducing oxygen tolerance while increasing the risk of pulmonary oxygen toxicity The ZEN AIR provides information based upon a personal dive profile and therefore must not be shared between divers It is impossible for two divers to stay precisely together underwater and your computer s dive profile tracking of previous d...

Page 36: ...37 DIVE COMPUTER SURFACE MODES ...

Page 37: ...cated by the graphic Nor Fig 29 The GAUG and FREE Surface Main screens can be accessed by subsequent 2 second presses of the M button Their graphics will flash indicating that they can be selected as the Operating Dive Mode To select a Mode for diving press release the M button while that graphic is flashing When the graphic becomes solid that Mode is selected for the type of dives to be conducted...

Page 38: ... Post Dive Surface Mode following a dive upon ascent to 2 FT 0 6 M The Surface Interval Time colon will flash during the first 10 minutes after a NORM or GAUG dive Fig 30A or 1 minute after a FREE dive Fig 30B During the first 10 minutes after a dive the Surface Main screen for the operating mode remains on display Watch Default Time can be viewed for 5 seconds during that period by pressing and r...

Page 39: ...after a NORM Nitrox dive A 2 sec will access NORM SURF ALT A 2 sec will access Log Mode then again History A and S simultaneously 2 sec will access the Set Menu M 2 sec will access GAUG Surface Main then another 2 seconds FREE Surface Main M 2 sec will revert to the Watch Default Time S 2 sec will access Plan Mode then again after dives Time to Fly then Dsat Time L press will activate the Backligh...

Page 40: ...raphic EL2 to EL7 if above 3000 feet 915 meters blank if below Temperature with degrees icon and graphic F or C Time of Day hr min with Time clock icon A 2 sec will revert to NORM Surface Main After 5 sec operation will revert to NORM Surface Main L press will activate the Backlight ZEN AIR BATTERY STATUS information includes Fig 33 Graphics BAT and ZEN Graphic Good or Lo Battery icon if a Low Bat...

Page 41: ...porting NORM GAUG SET MODES SURF MAIN SET F SET A SET U Serial Number Access and step through of the sequence is gained by repeated simultaneous 2 second presses of the A and S buttons Alarms Set A and Utilities Set U Set Points can also be set changed using the PC Settings Upload program FO2 Set F entries must be made using only the push buttons Settings remain at the values set until they are ch...

Page 42: ... Gas 1 continues to reset to the FO2 50 Default after subsequent repetitive dives until 24 hours elapse after the last dive or the FO2 50 Default is turned Off in the Set FO2 50 Default On Off MODE When the FO2 50 Default is set Off the FO2 for Gas 1 will remain at the last Set Point for the remainder of that series of repetitive dives The default FO2 for Gas 1 each new dive Period is AIR When FO2...

Page 43: ...s 1 is set for 21 it will remain set for 21 for that series of dives until set for a higher numerical value If the FO2 50 Default is set Off FO2 for Gas 2 and 3 will remain at their respective Set Points previously selected until they are changed If the FO2 50 Default is set On FO2 for Gas 2 and 3 will Default to 50 after the dive The ZEN AIR is programmed to prevent FO2 for Gas 2 and 3 from being...

Page 44: ...g Gas mix 1 FO2 Set Point value flashing S hold will scroll through the Set Points from AIR to 21 through 50 in 1 increments at a rate of 8 per second The scroll will stop when S is released or momentarily at 32 even if S is held depressed Depressing S again will resume the scroll from 32 through 50 then stop at AIR or 21 S repeatedly 2 sec each time will step through the Set Points one at a time ...

Page 45: ...ough 100 in 1 increments at a rate of 8 per second The scroll will start at the FO2 Gas 1 Set Point and stop when S is released or momentarily at 50 then again at 80 then at the Gas 1 Set Point or at AIR or 21 S repeatedly 2 sec each time will step through the Set Points one at a time A 2 sec will save the setting and access Set FO2 Gas 3 A and S simultaneously for 2 sec will save the setting and ...

Page 46: ...to the Surface Main SET A GROUP Selections Audible Depth EDT NIBG DTR Turn Pressure End Pressure PO2 A and S simultaneously for 4 sec while NORM or GAUG Surface Main is displayed will access Set A Fig 39 A 2 sec will then access Set Audible Alarm SET AUDIBLE ALARM This option allows the Audible Alarm to be disabled Due to their importance some cautionary situations will cause the Audible to sound ...

Page 47: ...H ALARM information includes Fig 41 Graphic DEP Set Point value flashing with MAX and FT or M icons S hold will scroll through the Set Points from 30 to 330 FT 10 to 100 M in 10 FT 1 M increments at a rate of 8 per second S repeatedly 2 sec each time will step up through the Set Points one at a time A 2 sec will save the setting and access Set EDT Alarm A and S simultaneously for 2 sec will save t...

Page 48: ...neously for 2 sec will save the setting and revert to SET A M 2 sec or if no button is pressed within 2 minutes operation will revert to the Surface Main SET NiBG ALARM information includes Fig 43 Graphic NBG Nitrogen Bar Graph NIBG Set Point segments flashing S 2 sec will step through the Set Points one at a time A 2 sec will save the setting and access Set DTR Alarm A and S simultaneously for 2 ...

Page 49: ...save the setting and revert to SET A M 2 sec or if no button is pressed within 2 minutes operation will revert to the Surface Main SET TURN ALARM TRT1 only information includes Fig 45 Graphic TRN Turn Pressure Set Point graphic OFF or numeric Presssure value flashing with PSI or BAR icon S hold will scroll through the Set Points from OFF to 1000 to 3000 PSI 70 to 205 BAR in 250 PSI 5 BAR increment...

Page 50: ... 105 BAR in 100 PSI 5 BAR increments at a rate of 8 per second S 2 sec will step through the Set Points one at a time A 2 sec will save the setting and access Set PO2 Alarm A and S simultaneously for 2 sec will save the setting and revert to SET A M 2 sec or if no button is pressed within 2 minutes operation will revert to the Surface Main SET PO2 ALARM information includes Fig 47 Graphics PO2 and...

Page 51: ...TRT 3 A and S simultaneously for 6 sec while NORM or GAUG Surface Main is displayed will access Set U Fig 48 A 2 sec will then access Set Wet Activation SET WET ACTIVATION information includes Fig 49 Graphics WET and ACT Set Point graphic OFF or ON flashing S 2 sec will toggle between ON and OFF A 2 sec will save the setting and access Set Units A and S simultaneously for 2 sec will save the setti...

Page 52: ... no button is pressed within 2 minutes operation will revert to the Surface Main SET NORM DEEP STOP information includes Fig 51 Graphic DS Deep Stop Set Point OFF or OFF flashing with STOP icon S 2 sec will toggle between OFF and ON A 2 sec will save the setting and access Set Safety Stop A and S simultaneously for 2 sec will save the setting and revert to SET U M 2 sec or if no button is pressed ...

Page 53: ...SERVATIVE FACTOR information includes Fig 53 Graphic CF Conservative Factor with wave clock profile icon Set Point OFF or ON flashing S 2 sec will toggle between OFF and ON A 2 sec will save the setting and access Set CF A and S simultaneously for 2 sec will save the setting and revert to SET U M 2 sec or if no button is pressed within 2 minutes operation will revert to the Surface Main When the C...

Page 54: ... if no button is pressed within 2 minutes operation will revert to the Surface Main SET SAMPLING RATE information includes Fig 55 Graphics SR Sampling Rate and SEC seconds Set Point flashing with clock icon S 2 sec will step through the Set Points of 2 15 30 and 60 sec A 2 sec will save the setting and access Set TRT 1 A and S simultaneously for 2 sec will save the setting and revert to SET U M 2 ...

Page 55: ...rough the first digit s values from 0 to 9 in increments of 1 at a rate of 8 per second S repeatedly 2 sec each time will step through the first digit s values one at a time A 2 sec will accept the first digit and flash the second Repeat S and A operations to set the other digits When A is pressed to save the last right digit the Set TRT2 screen will appear with OFF or ON flashing A and S simultan...

Page 56: ...ision will be requested in the event that you contact TUSA regarding the ZEN AIR Enter them in the Records section provided in the back of this Manual NORM PLAN MODE TUSA strongly recommends that you review the Plan Mode prior to every NORM dive to help you plan your dive as required to avoid exceeding no decompression or oxygen exposure limits This is especially important for repeti tive dives wh...

Page 57: ...is set for Nitrox blank if set for Air Tank 1 icon FO2 Set Point Air or 21 to 50 A 2 sec after dives will access Time to Fly then again Dsat Time S repeatedly 2 sec each time will access the first Plan Depth Time screen and step through the screens The screens will sequence through Depths from 30 up to 190 FT 9 to 57 M or the Max Depth that will allow theoretical No Deco Dive Time of at least 1 mi...

Page 58: ... based on previous dives Dive Time hr min allowed for the Depth displayed Max Depth allowed for the PO2 Alarm value set with MAX and FT or M icons and graphic PO2 Tank 1 icon indicating Gas mix 1 Plan Depth with FT or M icon S repeatedly 2 sec each time will increase the Planned Depth in increments of 10 FT 3 M displaying the information one screen at a time M 2 sec or if no button is pressed with...

Page 59: ...d by first accessing the NORM or GAUG Surface Main While viewing NORM Surface Main S 2 sec to access Plan Lead in then A 2 sec to access Fly While viewing GAUG Surface Main S 2 sec to access Fly Time to Fly information includes Fig 60 Graphic FLY Countdown Time hr min with clock icon A 2 sec will access Desat Time if in NORM or revert to Surface Main if in GAUG M 2 sec or if no button is pressed w...

Page 60: ...puter operations Off 24 hours after a last dive The SAT screen is not displayed after a Violation Dive Desaturation requiring Times greater than 24 hours will display 23 In the event that Time to Desaturate still remains at the end of 24 hours the added time will be zeroed Two hours after a dive operation reverts to the Watch Default Time and the Desat countdown continues in the background Access ...

Page 61: ...e recorded in the Log and the oldest dive s data deleted Dives will be numbered 1 to 24 starting at 1 each time a new series of dives begins After it shuts Off 24 hours after a dive the first dive of the next new series will be 1 A 2 sec while viewing Watch Default Time NORM Surface Main or GAUG Surface Main will access Log Mode displaying the most recent dive s Log Preview screen S hold will then...

Page 62: ... 12 Hour Format icon and dive number 1 to 24 for that series S 2 sec will access that dive s Log Data 1 screen A 2 sec will bypass Log Mode and access History Log Data 1 information includes Fig 63 NiBG with the max segment flashing others fixed up to end of dive accumulation All flashing if Violation Log book icon Pre dive Surface Interval time hr min with clock wave icon 10 through 23 if 9 59 hr...

Page 63: ... 2 only if Nitrox information includes Fig 64 Log book icon Graphic FO2 with FO2 Set for Gas 1 for that dive at bottom O2BG segments representing O2 accumulated at the end of the dive Max PO2 achieved ATA with MAX icon and graphic PO2 Tank 1 icon representing Gas mix 1 S 2 sec will access the previous dive s Log Preview screen A 2 sec will revert to NORM or GAUG Surface Main M 2 sec or if no butto...

Page 64: ...NORM Surface Main or GAUG Surface Main screen History 1 information includes Fig 65 Graphic HIS Total Elapsed Dive Time recorded up to 9999 with graphic Hour and clock icon Total number of all dives recorded up to 999 with icon S 2 sec will access the History 2 screen A 2 sec will revert to NORM or GAUG Surface Main History 2 information includes Fig 66 Altitude graphic SEA or EL 2 through EL 7 ma...

Page 65: ...d to the TUSA PC Interface program WARNINGS Making decompression dives without the proper preparation and training will place you in an unnecessarily dangerous situation Existing data for making planned decompression dives is limited and virtually non existent for repetitive decompression diving Decompression diving greatly increases your risk of decompression sickness Special training equipment a...

Page 66: ...67 NORM DIVE MODES ...

Page 67: ...68 Transmitter Signal Reception Guide Best Reception Area Poor Reception Area Poor Reception Area Poor Reception Area Poor Reception Area Poor Reception Distance greater than 6 feet 2 meters ...

Page 68: ...into the high pressure ports of the Regulator First Stages the TRTs must be positioned so that they face horizontally outward from the Tank Valves Link Interruption Underwater Moving the ZEN AIR out of the signal pattern of the TRT will result in a temporary interruption of the Link signal An interruption lasting greater than 15 seconds will cause the Audible to sound and the Tank Pressure value a...

Page 69: ...your present Depth before entering a Decompression situation It is calculated based on the amount of Nitrogen absorbed by hypo thetical tissue compartments The rates each of these compartments absorb and release Nitrogen is mathematically modeled and compared against a maximum allowable Nitrogen level Whichever one is closest to this maximum level is the controlling compartment for that Depth Its ...

Page 70: ...as DTR on the Main Dive screen Air Time Remaining ATR ATR is the time you can remain at the present Depth and still safely surface with the tank Pressure reserve that you selected during setup End Pressure Alarm Setting ATR identified by the AIR icon Fig 70a can be viewed when the Alternate 1 display is accessed during dive modes The ZEN AIR calculates ATR using a patented algorithm that is based ...

Page 71: ...athing more rapidly the ZEN AIR will recognize the change and adjust the ATR accordingly ATR Alarm When ATR decreases to 5 minutes Fig 71a the Audible will sound and if it decreases to 0 the Audible will sound again with the message ATR flashing Fig 72 until the Audible is silenced the the time value will be displayed You should immediately initiate a controlled Ascent while moni toring your Tank ...

Page 72: ... Rate for the depth you are at the Audible will sound during which time all segments of the ASC and the graphic SLO will flash on the Main Dive screen Fig 73 The flashing will stop and normal information restored when the audible is silenced or your Ascent Rate is slowed below the allowed rate The Ascent Rate alarm is based upon 2 sets of speeds which change at a reference depth of 60 FT 18 M WARN...

Page 73: ...es menus at that time Modes such as Surface Mode Plan Fly etc NORM No Deco Main information includes Fig 74 NiBG O2BG ASC if applicable DTR hr min with wave clock profile icon Tank Pressure with the PSI or BAR icon if a TRT is active and linked EDT hr min with wave clock icon Tank icon Gas TRT in use 1 2 or 3 Current Depth with FT or M icon A 2 sec to view ALT 1 A 2 sec to view Deep Stop Preview M...

Page 74: ...peration will revert to Main after 5 seconds if A is not pressed L press to activate Backlight NORM No Deco ALT 2 information includes Fig 76 Graphic FO2 PO2 ATA with graphic PO2 FO2 Setting and symbol FO2 Tank icon GAS in use 1 2 or 3 FO2 set for Gas in use Operation will revert to Main after 5 seconds or if A is pressed L press to activate Backlight ALT screens cannot be accessed during the time...

Page 75: ...ent The Preview screen will not be available for viewing once you ascend above the Stop Depth NOTE The Deep Stop is not required and al though recommended it does not have to be taken There is no penalty if the Stop is ignored and ascent or other activity is continued Upon ascending to within 10 FT 3 M below the calculated Stop Depth the DS Main screen Fig 78 will appear displaying the calculated ...

Page 76: ...0 FT 3 M above the Stop Depth for more than 10 seconds during the count down the No Deco Main will be displayed and the DS feature will be disabled for the remainder of that dive If you return to within the 10 FT 3 M range during the 10 seconds the DS Main will reappear with the countdown still in progress The DS feature will be disabled and it s screens not displayed for the remainder of that div...

Page 77: ... during the countdown or you surface during the countdown Like the DS there is no Penalty for surfacing prior to complet ing the SS There is no Preview screen associated with the Safety Stop SS Main display information includes DTR hr min with mode icon Stop Depth 15 FT or 4 5 M with STOP icon Countdown Timer min sec with clock icon Tank icon Gas 1 2 or 3 Cur rent Depth with FT or M icon and appli...

Page 78: ...79 CAUTIONARY MODES ...

Page 79: ...until the audible is silenced Stop Depth required with FT or M and STOP icons Stop Time hr min required clock icon Tank icon Gas TRT in use 1 2 or 3 Current Depth with FT or M icon The UP Arrow icon will flash until you ascend to within 10 FT 3 M below the Stop Depth indicated then it will be blank S 2 sec to acknowledge silence the Audible L press to activate Backlight TAT represents Total Ascent...

Page 80: ...slightly less credit given the deeper you are below the Stop Depth indicated Deco Stop Main information includes Fig 82 Full NiBG solid O2BG if applicable TAT hr min with Deco mode icon Stop bar solid Stop Depth with FT or M and STOP icons Stop Time hr min with clock icon Tank icon Gas 1 2 or 3 Current Depth with FT or M icon A 2 sec to view ALTs similar to those for DS M 2 sec to access the Gas T...

Page 81: ... min with Deco mode icon stop bar flashing Stop Depth with FT or M icon and STOP icon flashing Stop Time hr min with clock icon Down Arrow icon flashing Tank icon Gas 1 2 or 3 Current Depth with FT or M icon A 2 sec to view ALTs similar to those for DS M 2 sec to access the Gas TRT Switch Routine S 2 sec to acknowledge silence alarms L press to activate Backlight NOTE Upon entry into the following...

Page 82: ...g Tank icon Gas 1 2 or 3 Current Depth with FT or M icon A 2 sec to view ALTs similar to those for DS M 2 sec to access the Gas TRT Switch Routine S 2 sec to acknowledge silence alarms L press to activate Backlight DELAYED VIOLATION 2 DV2 If Decompression requires a Stop Depth between 60 and 70 FT 18 and 21 M the full NiBG and TAT digits will flash When this occurs you must make a controlled ascen...

Page 83: ...ilence alarms L press to activate Backlight DELAYED VIOLATION 3 DV3 If you descend deeper than the MOD Max Operating Depth of 330 FT 99 9 M the Up Arrow icon will flash and the Current Depth will only display 3 dashes flashing signifying that you are Out of Range Max Depth on the ALT screen will only indicate 3 dashes Upon ascending above 330 FT 99 9 M the Current Depth display will be restored ho...

Page 84: ...c to acknowledge silence alarms L press to activate Backlight VIOLATION GAUGE MODE VGM If calculations require a Deco Stop Depth greater than 70 FT 21 M or if Deco is entered while operating in FREE Mode described later operation will enter Violation Gauge Mode VGM for the remainder of that dive and for 24 hours after surfacing VGM turns the ZEN AIR into a digital instrument without any nitrogen o...

Page 85: ...M 2 sec to access the Gas TRT Switch Routine S 2 sec to acknowledge silence alarms L press to activate Backlight The ZEN AIR will also enter VGM 5 minutes surfacing from a dive in which a Delayed Violation 1 2 or 3 occurred Once on the surface VGM does not allow access to the Set F Plan Fly and Dsat features screens This condition is a Permanent Violation and in the event that a dive is made durin...

Page 86: ...will access Log Mode then again History A and S simultaneously 2 sec will access the Set Menu M 2 sec will access GAUG Surface Main then another 2 seconds FREE Surface Main M 2 sec will revert to the Watch Default Time S 2 sec will access Time to Fly L press will activate the Backlight The countdown timer that appears when you access Fly is only provided to inform you of the time remaining before ...

Page 87: ...ernate with NDC time Fig 89B until PO2 decreases 0 2 ATA below the alarm Set Point The value of PO2 can be viewed on ALT 2 S 2 sec to acknowledge silence the Audible A 2 sec to view ALTs M 2 sec to access the Gas Switch Routine L press to activate Backlight When PO2 reaches the Alarm Set Point the Audible will sound again The Up Arrow icon will flash on the Main screen until PO2 decreases 0 20 ATA...

Page 88: ...ible will sound during which the graphic O2 flashes in place of NDC time and the full O2BG and Up Arrow icon will be displayed flashing Fig 90 When the audible is acknowledged silenced the O2 graphic becomes solid until O2 decreases below 100 S 2 sec to acknowledge silence the Audible A 2 sec to view ALTs M 2 sec to access the Gas Switch Routine L press to activate Backlight Upon surfacing operati...

Page 89: ...fety Stop at 15 to 20 FT 4 5 to 6 M at the end of every dive It s important don t forget it You should make every effort to complete all of your ascents with the Nitrogen Bar Graph inside the normal No Decompression zone If you inadvertently entered Decompression you should not complete your ascent until the Nitrogen Bar Graph is at least inside the No Decom pression Caution Zone While you cannot ...

Page 90: ...91 SWITCHING GAS MIXES AND TRTS ...

Page 91: ...ing the time that a Dive Main screen is being displayed and cannot be performed during the time that an Alarm is sounding If a Switch to a new Gas would expose the diver to a prohibitive PO2 level of 1 60 ATA or greater the Audible will sound during which a message will be displayed Fig 91 Due to the possibility that sufficient air may not be available in the Switch From tank to complete the dive ...

Page 92: ...n M 2 sec to access the Gas TRT 2 Switch Preview M 2 sec to switch to Gas TRT 1 after 3 sec then revert to the Main with calculations displays based on Gas TRT 1 Gas TRT 2 Switch Preview information includes Fig 93 Graphics FO2 and 2 Tank 2 Pressure with PSI or BAR icon if TRT2 is active FO2 Set Point for Gas 2 Tank Gas TRT 2 icon M 2 sec to access the Gas TRT 3 Switch Preview M 2 sec to switch to...

Page 93: ...k 3 Pressure with PSI or BAR icon if TRT3 is active FO2 Set Point for Gas 3 Tank Gas TRT 3 icon M 2 sec to access the Gas TRT 1 Switch Preview M 2 sec to switch to Gas TRT 3 after 3 sec then revert to the Main with calculations displays based on Gas TRT 3 Fig 94 GAS TRT 2 PREVIEW ...

Page 94: ...95 NORM POST DIVE MODES ...

Page 95: ... includes Fig 95 NiBG and O2BG if Nitrox Surface Interval Time hr min colon flashing with clock wave icon Tank 1 default on surface Pressure with PSI or BAR icon if active Graphic Nor Tank Gas TRT 1 icon default on surface Number of that dive with icon Battery icon if a Low Battery condition flashing if Too Low A 2 sec to access the Log Preview for that dive A 2 sec to access Surface ALT M 2 sec t...

Page 96: ...seconds You will then have full ac cess to other DC surface modes e g Plan Fly Sat Set etc S 2 sec to access Plan Mode Adjusted NDLs will be displayed based on residual nitrogen and accumulated oxygen calculated to be remaining from the previous dives A 2 sec while viewing the first Plan screen to access Time to Fly Fig 96 then again to access Time to Desaturate Fig 97 The Dsat counter provides ca...

Page 97: ...urface interval time maximum depth elapsed dive time start date start time lowest temperature underwater sampling rate dive profile Set Points NiBG O2BG start end Pressure and Gas TRT Switching events The ZEN AIR checks for the presence of an interface device connection to the Data Port once every second while in Watch Default Time mode Checks are not made if the Wet Activation contacts are wet Up...

Page 98: ...ATING MODE NOTE Once a dive is made in Digital Gauge Mode you must wait 24 contiguous hours after surfacing before the ZEN AIR resets and will operate as an Air or Nitrox dive computer in NORM Mode or FREE Dive Mode ...

Page 99: ...uge Mode is selected If no Gauge dive has been conducted M 2 sec will access Free Surface Main Gauge Surface Main information includes Fig 98 Surface Interval Time hr min with clock wave icon Tank 1 default on surface Pressure with PSI or BAR and Tank TRT 1 icon if active Graphic GAU flashing if not previously selected Number of the recent dive conducted 0 if no dive yet that period with icon Batt...

Page 100: ... Routine if TRTs in use S 2 sec to acknowledge silence Alarms L press to activate Backlight Gauge Dive ALT information includes Fig 100 ATR hr min with wave clock profile and AIR icons if a TRT is in use Temperature with degrees icon and graphic F or C Time of Day hr min with clock and AM or PM icons Max Depth with MAX and FT or M icons A 2 sec to revert to the Main or after 5 seconds if A is not ...

Page 101: ...are similar If you descend deeper than the MOD Max Operating Depth of 330 FT 99 9 M Delayed Violation 3 DV3 will be activated similar to that described for NORM DV3 Main information includes Fig 102 Graphic GAU Tank Pressure with PSI or BAR and Tank 1 2 or 3 icons EDT hr min with wave clock icon Up Arrow icon flashing Depth as 3 dashes flashing with FT or M icon ASC if ascending S 2 sec to acknowl...

Page 102: ...103 FREE DIVE OPERATING MODE ...

Page 103: ...de The graphic FRE becomes solid and Free Mode is selected If no Free dive has been conducted M 2 sec will access NORM Surface Main Free Surface Main information includes Fig 103 Graphic FRE Graphic tot with Total number of repetitive Free dives conducted 0 if none yet in that series with icon Surface Interval after the most recent dive min sec to 59 59 then hr min with clock wave icon above next ...

Page 104: ...r 5 seconds if A is not pressed L press to activate Backlight Free Surface ALT 2 information includes Fig 105 Temperature with degrees icon and graphic F or C Time of Day hr min with clock and AM or PM icons A 2 sec to revert to the Main or after 5 seconds if A is not pressed L press to activate Backlight Fig 105 FREE SURF ALT 2 Fig 104 FREE SURF ALT 1 FREE Mode uses the NORM GAUG settings for Tim...

Page 105: ...til it counts down to 0 00 or it is set OFF or a Dive is made at which time it will default to OFF and the value previously set When a set Countdown Time reaches 0 00 the Audible will sound during which the graphic CDT will flash Fig 107 S 2 sec will toggle between ON and OFF A toggle to ON will Start the CDT if a Time has been set A and S 2 sec will access Set Free CDT S 2 sec will revert to Free...

Page 106: ...d ON started but not Set Set Free CDT Upon access the Set CDT screen displays the graphics CDT and SEt with the CDT min sec with clock icon the Minute Set Point flashing Fig 108 S hold will scroll upward through the Minute Set Points in 1 Minute increments at a rate of 8 per second S 2 sec each time will step upward through Minute Set Points one at a time A 2 sec will save the Minute Set Point and...

Page 107: ...und 3 short beeps and the graphic EDT and Time digits will flash every 30 seconds A and S 2 sec while viewing Free Surface Main to access Set Free EDT Alarm The EDT Alarm can only be Set while on the Surface and can not be changed during a Dive Set Free EDT Alarm information includes Fig 110 Graphics EDT 30 with clock icon and SEC Set Point graphic OFF or ON flashing S 2 sec will toggle between OF...

Page 108: ...he graphic DA1 DA2 DA3 and Depth digits will flash A 2 sec while viewing the Set Free EDT Alarm screen to access Set DA1 Depth Alarm 1 DA2 and DA3 similar Set Free DA1 information includes Fig 111 Graphic DA1 Set Point OFF or ON flashing Depth digits flashing if ON is selected with MAX and FT or M icons S 2 sec will toggle between OFF and ON A 2 sec will save the ON OFF setting If OFF is selected ...

Page 109: ...nformation includes Fig 112 NiBG if any after NORM or FREE dives NDC Time hr min with wave clock profile icon Temperature with degrees icon and graphic F or C EDT min sec with wave clock icon Current Depth with FT or M icon A 2 sec to access ALT 1 Free CDT Status L press will activate Backlight Free Dive ALT 1 CDT information includes Fig 113 Graphics CDT and ON or OFF flashing CD Time min sec col...

Page 110: ...vert to the Main or after 5 seconds if A is not pressed L press to activate Backlight FREE DIVE ALARMS Free Dive alarms sound 3 short beeps 1 or 3 times as an indication that an event is oc curring and as a reminder to view the display to identify an event As the Audible sounds a graphic identifying the event will flash in place of NDC Time Free Dive alarms are separate and unaffected by NORM GAUG...

Page 111: ...udible and flashing graphic will be repeated when Depth reaches the DA 2 and DA 3 Set Points if set ON If Ascent is made above a Free Depth Alarm Set Point and then a descent is made below it the respective Alarm DA will reset and sound again Free EDT Alarm When the Free EDT Alarm is set ON 3 short beeps will sound during which the graphic EDT will flash Fig 117 then NDC will be restored The Free ...

Page 112: ... time the NDC will be restored and the Up Arrow icon will be removed In the event that Nitrogen load ing increases to the Deco level operation will enter Violation Gauge Mode for 24 hours Entry into Deco Violation Upon entry into Deco 3 short beeps will sound 3 times the full NiBG and O2BG with the graphic VIO will flash Fig 119 Upon surfacing the Up Arrow icon will be removed then after 10 minute...

Page 113: ... a diver to WARNINGS Ensure that you know which Operating Mode is selected NORM GAUG or FREE prior to commencing any dive Conducting Free dives within a 24 hour period after conducting SCUBA dives combined with the effects of multiple rapid Free Dive ascents increases your risk of decompression sickness Such activities may result in accelerated entry into decompression which could cause serious in...

Page 114: ...115 REFERENCE ...

Page 115: ...or a slightly acidic bath 50 white vinegar 50 fresh water After removal from the bath place the ZEN AIR and the Regulator s with Transmitter s unit under gently running water and towel dry before storing Transport your ZEN AIR system cool dry and protected INSPECTIONS AND SERVICE Your ZEN AIR should be inspected annually by an Authorized TUSA Dealer who will perform a factory prescribed function c...

Page 116: ...on of moisture in the Battery Compartment it is recommended that the Battery be changed in an environment equiva lent to the local outdoor temperature and humidity e g do not change the Battery in an air conditioned environment then take it outside during a hot sunny day Inspect the Buttons Lens and Housing to ensure they are not cracked or damaged If there is any sign of moisture in the ZEN AIR D...

Page 117: ...ght using your fingers Fig 122 Lift the Hatch with O ring up and away from the Housing Using care not to damage the Battery Contact Fig 123a slide the Battery up and out of the left side of the Battery Compartment Discard the Battery according to local regulations governing disposal of Lithium batteries CAUTION DO NOT allow a metal object to short circuit the top of the Battery which is posi tive ...

Page 118: ...y Hatch and Housing for any signs of damage that might prevent proper sealing Closely examine the inside of the Battery Compartment for any signs of corrosion indicating entrance of moisture into the unit WARNING If damage or corrosion is found return your ZEN AIR to an Authorized TUSA Dealer and DO NOT attempt to use it until it has received factory prescribed service Battery Installation Slide a...

Page 119: ... securely in place and turn it counter clockwise 10 degrees using the Hatch tool Fig 126 or by pushing the lower portion to the right while pushing the upper portion to the left using your fingers Fig 127 Testing Activate the unit and observe the LCD is consistently clear and sharp in contrast throughout the screen Set the Watch functions Verify all Set Points prior to diving If any portions of th...

Page 120: ...proper sealing Inspect the Housingto ensure it is not cracked or damaged WARNING If damage or corrosion is found re turn your TRT to an Authorized TUSA Dealer and DO NOT attempt to use it until it has received factory prescribed service Remove the Battery Hatch O ring and inspect it for any signs of deterioration or deformity DO NOT use tools to remove the O ring To ensure proper sealing O ring re...

Page 121: ...ery Cap DO NOT roll the O ring over the threads instead stretch it slightly to work it down over the slotted end of the Cap into the groove at the base of the threads Fig 129 NOTE The TRT s O ring must be a genuine TUSA part that can be purchased from an Authorized TUSA Dealer Use of any other O ring will void the warranty Place a new 3 volt CR2 Lithium Battery Duracell model DL CR2 or equivalent ...

Page 122: ...EN AIR with TRT to an Authorized TUSA Dealer for a complete evaluation before attempting to use it INSTALLING A TRANSMITTER ON A REGULATOR To install the TRT on the Regulator First Stage Remove the existing Pressure Gauge and High Pressure Hose or the High Pressure Port Plug from the port marked HP using the proper size hex key Lightly lubricate the O ring and threads of the Transmitter fitting wi...

Page 123: ...air leakage is present DO NOT use take the complete regulator assembly to an Authorized TUSA dealer for inspection and service TRANSMITTER COMPATIBILITY WITH NITROX When packaged and shipped from the factory TUSA ZEN AIR Transmitters are rated for use with compressed Air and or nitrogen oxygen Nitrox breathing gas mixtures containing up to 99 O2 by volume and with 100 O2 ...

Page 124: ...ach other to record that Ambient Pressure as the current Altitude The Mathematical Model in the ZEN AIR accounts for the reduced No Deco Dive Times NDLs available based on National Oceanic and Atmospheric Administration NOAA guidelines When diving in high altitude waters from 3 001 to 14 000 feet 916 to 4 270 meters the ZEN AIR automatically adjusts to these conditions providing corrected Depth re...

Page 125: ...On while at Sea Level calculations are based upon an Altitude of 6 000 feet The ZEN AIR will not function as a Dive Computer above 14 000 feet 4 270 meters PO2 ATA 0 60 0 70 0 80 0 90 1 00 1 10 1 20 1 30 1 40 1 50 1 60 Max Duration Single Exposure min hr 720 12 0 570 9 5 450 7 5 360 6 0 300 5 0 240 4 0 210 3 5 180 3 0 150 2 5 120 2 0 45 75 Max Total Duration 24 Hour Day min hr 720 12 0 570 9 5 450...

Page 126: ... 0 04 0 04 0 03 0 03 0 03 0 03 0 03 0 03 0 03 0 03 190 0 04 0 04 0 04 0 03 0 03 0 03 0 03 0 03 0 03 0 03 0 03 0 00 PZ ALGORITHM NDLS HR MIN AT ALTITUDE METRIC Altitude 0 916 1221 1526 1831 2136 2441 2746 3051 3356 3661 3966 meters to to to to to to to to to to to to 915 1220 1525 1830 2135 2440 2745 3050 3355 3660 3965 4270 Depth M 9 3 37 2 41 2 31 2 23 2 16 2 10 2 04 1 59 1 54 1 50 1 43 1 37 12 1...

Page 127: ...On Off Set DIVE COMPUTER SURFACE SEQUENCE MODES NORM GAUG FREE Surface Main SURF ALT Altitude Temp Time Plan 30 to 190 FT 9 to 57 M NORM only Time to Fly NORM GAUG Time to Desaturate NORM only Dive Log History NORM GAUG Set FO2 Alarms Utilities NORM GAUG NORM GAUG SET MODES Set F Group FO2 items FO2 GAS 1 Air 21 to 50 FO2 GAS 2 Air 21 to 100 FO2 GAS 3 Air 21 to 100 FO2 Default On Off Set A Group A...

Page 128: ...face Interval Time 0 00 to 23 59 hr min 1 minute Free Surface Interval Time 0 00 to 59 59 min sec 1 second 1 00 to 23 59 hr min 1 minute Dive Log Surface Interval 0 00 to 23 59 hr min 1 minute Time to Fly 23 50 to 0 00 hr min 1 minute starting 10 min after the dive Time to Desaturate 23 50 max to 0 00 hr min 1 minute starting 10 min after the dive Temperature 0 to 140 F 9 to 60 C 1 Tank Pressure 0...

Page 129: ... 3 5 7 5 1 21 50 6 5 15 Caution Zone 2 26 30 8 9 2 51 60 15 5 18 Too Fast Zone flashing 3 all 30 9 3 all 60 18 OPERATIONAL PERFORMANCE Function Accuracy Depth 1 of full scale Timers 1 second per day Dive Counter NORM GAUG displays Dives 1 to 24 FREE displays 1 to 99 0 if no dive made yet Resets to Dive 1 upon diving after 24 hours with no dives NORM GAUG Dive Log Mode Stores 24 most recent NORM GA...

Page 130: ...ep mode Replacement User replaceable annual recommended Use Life 1 year or 300 dive hours if 2 1 hour dives per dive day Battery Indicator Warning icon on solid at 2 75 volts Battery change recommended Alarm icon on flashing at 2 50 volts change the Battery Dive Computer Mode Activation Manual push button recommended required if Wet Activation is set OFF Automatic by immersion in water if set ON C...

Page 131: ...ter in storage case provided between 14 F and 158 F 8 and 70 C PC requirements IBM or compatible Personal Computer with Mouse USB Port CD drive and printer Intel Pentium 200 MHz or better microprocessor Microsoft Windows 98 Second Edition ME NT 2000 XP or Vista Super VGA card or compatible video graphics adaptor 256 color or greater with a minimum 800 X 600 pixel screen area of display settings 20...

Page 132: ...igital Device pursuant to Part 15 of FCC Rules Title 47 of the Code of Federal Regulations These rules are designed to provide reasonable protection against harmful interference in a commercial or residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio com...

Page 133: ... begin a safe ascent to the surface Upon surfacing and any time thereafter when access to Dive Computer Operating Mode is attempted from Watch Mode only the message ERR will be displayed No Dive Computer Modes screens will be accessible If this occurs the ZEN AIR must be returned to the factory for evaluation service prior to any further use for diving activities ERROR RESET DURING A DIVE ERROR WH...

Page 134: ...ransmitter 1 Serial Number _________________________________ Transmitter 2 Serial Number _________________________________ Transmitter 3 Serial Number _________________________________ Date of Purchase ____________ Purchased from __________________________ Below to be filled in by an Authorized TUSA Dealer Date Service Performed Dealer Technician ...

Page 135: ... com au Tabata Taiwan Co Ltd 54 8 Hsutsogang Nankang Vil Tayuan Hsiang Tao Yuan Hsien Taiwan R O C Tel 886 0 3 386 5100 Fax 886 0 3 386 5103 info mail tabata com tw Tabata Europe Corporation B V Den Brielstraat 2 B 1055 RV Amsterdam The Netherlands Tel 31 0 20 68 15 955 Fax 31 0 20 68 24 527 www tusa nl info tusa nl Tabata Co Ltd Japan 1 3 17 Higashikomagata Sumida ku Tokyo Japan 130 0005 Tel 81 0...

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Tusa ZEN AIR IQ-950, Owner'S Manual

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