Aqua Lung i750TC Owner'S Manual Download Page 41

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Doc. 12-7852-r05 (8/5/16)

DIVE OPERATION

The preceding information has described standard dive operations. Your new i750TC is also designed to help you

to the surface in less than ideal situations. The following is a description of these situations. Take some time to

familiarize yourself with these operations before diving your i750TC.

DECOMPRESSION

Decompression (deco) mode activates when theoretical No Decompression time and depth limits are exceeded.

Upon entry into deco, the audible alarm will sound. The full N2 bar Graph and Up Arrow icon will flash until the

audible is silenced.

• Once within 3 m (10 ft) below the required Stop Depth (stop zone), the Full Stop icon (both Arrows with Stop

Bar) will be displayed solid.

To fulfill your decompression obligation, you should make a safe controlled ascent to a depth slightly deeper than,

or equal to, the required stop depth indicated and decompress for the stop time indicated. The amount of decom-

pression credit time that you receive is dependent on Depth, with slightly less credit given the deeper you are

below the Stop Depth indicated. You should stay slightly deeper than the required Stop Depth indicated until the

next shallower Stop Depth appears. Then you can slowly ascend to that indicated Stop Depth but not shallower.

DECOMPRESSION ENTRY

Upon entry into decompression (deco) the audible alarm will sound until the audible is silenced. The message

DECO ENTRY, up arrow, and full N2 Bar Graph icons will flash. Additionally, the stop depth and stop time values

will be displayed. TTS (Time To Surface) and DIVE-T (Dive-Time) moveto the Alt 1 screen.

COMPLICATIONS

stop depth

remaining stop

time (min)

up arrow

DECOMPRESSION STOP MAIN

Decompression (deco) Stop Main will display upon ascending to within 3 m (10 ft) below the Deco Stop depth.

The message DECO STOP, the full stop graphic (opposed arrows with stop bar) will be displayed solid. While

Deco Stop Main is displayed, you may access up to 2 ALT displays by pressing the ADV button to cycle through

them. They are similar to the No Deco Main, Dive ALT 1, and Dive ALT 2 displays, respectively.

full stop graphic

stop depth

remaining stop

time (min)

Summary of Contents for i750TC

Page 1: ... Aqua Lung International Inc 2016 Dive Computer Owner s Manual Doc 12 7852 r05 8 5 16 i750TC ...

Page 2: ...tion of inert gases into the body by using a mathematical model This model is merely a way to apply a limited set of data to a large range of experiences The i750TC dive computer model is based upon the latest research and experiments in decompression theory Still using the i750TC just as using any other No Decompression Tables is no guarantee of avoiding decompression sickness i e the bends Every...

Page 3: ... person using it with data not the knowledge to use it Remember also that the dive computer does not actually measure and test the composition of your body tissue and blood Using an Aqua Lung dive computer just as using any other Decompression Tables is no guarantee of avoiding decompression sickness Every diver s physiology is different and can even vary from day to day No machine can predict how...

Page 4: ...AN 28 SET GAS 29 TRANSMITTERS 30 SET ALARMS 31 SET UTILITIES 33 1 H2O TYPE Water Type 33 2 UNITS 33 3 DEEP STOP 33 4 SAFE STOP SAFETY STOP 34 5 CF Conservative Factor 34 6 SAMPLING SAMPLE RATE 34 DIVE OPERATION 35 INITIATING A DIVE 36 NO DECOMPRESSION DIVE MAIN 36 DIVE ALT 1 37 DIVE ALT 2 37 DEEP STOP PREVIEW 37 EARMARK 37 DEEP STOP MAIN 38 SAFETY STOP MAIN 38 SURFACING 38 GAS TRANSMITTER SWITCHES...

Page 5: ...G A DIVE 57 FREE DIVE MAIN 58 FREE DIVE ALT 58 HIGH NITROGEN ALARM 58 COMPASS MODE 59 COMPASS DISPLAY ICONS 60 OVERVIEW 61 COMPASS MAIN MENU 62 COMPASS MAIN 62 CALIBRATE 62 SET DECLINATION 64 SET HEADING 64 TIMEOUT 65 EARMARK 65 ALARMS 66 ASC Ascent Alarm 66 Depth Alarm 66 REFERENCE 67 UPLOADING DOWNLOADING 68 CARE AND CLEANING 68 SERVICE 68 BATTERY REPLACEMENT 69 TECHNICAL DATA 72 NO DECOMPRESSIO...

Page 6: ...Doc 12 7852 r05 8 5 16 6 Aqua Lung International Inc 2016 GETTING STARTED ...

Page 7: ...rn on if its metal contacts become wet and you descend below 1 5 m 5 ft for 5 seconds Upon activation the unit will display the Welcome screen and perform a diagnostic check The i750TC checks the display and voltage at this time to ensure that everything is within tolerance It will also check ambient barometric pressure and calibrate present depth as 0 m ft When at 916 m 3001 ft or higher it will ...

Page 8: ...TION TIME DIVE TIME REMAINING TIME TO SURFACE DIVE TIME GAS TRANSMITTER 1 2 OR 3 GAS TIME REMAINING or VALUE IS GAS PRESSURE IN BAR OR PSI DEEP STOP TRIGGERED or GAS MIX AIR OR 21 100 BATTERY CONDITION IS GOOD SURFACE ONLY LOW BATTERY WARNING LOW BATTERY ALARM SURFACE TIME COUNTDOWN TIMER FREE MODE RUN TIMER GAUGE MODE or MAXIMUM DEPTH METERS OR FEET DISPLAY ICONS ...

Page 9: ...tions and access specific information They are also used to enter settings and acknowledge the audible alarm Pressing different combinations of these buttons will navigate through different menus and options of the i750TC The symbols in the table below will illustrate how to proceed through the menus SYMBOL MEANING PRESS BUTTON LESS THAN 2 SECONDS HOLD BUTTON GREATER THAN 2 SECONDS SELECT ADV MODE...

Page 10: ...stop Run Timer Gauge mode and Countdown Timer Free mode SELECT ADV MODE ADV to access Alt screens to step down the screen advance through selections to toggle or change setpoints SELECT ADV MODE MODE to exit a menu directly to the Main screen to access Home Menu from Main screens SELECT ADV MODE SELECT to switch between Compass mode and the active diving mode while on the Main screen to exit or st...

Page 11: ...Doc 12 7852 r05 8 5 16 11 Aqua Lung International Inc 2016 HOME MENU ...

Page 12: ...DJUST BRIGHTNESS The level of screen brightness can be adjusted to optimize screen appearance in different lighting conditions or to conserve battery power Press the Select button to cause the percentage value to flash and allow it to be changed NOTE During a Low Battery Warning or Alarm condition the level will be limited to 60 maximum to select an option to scroll up to scroll down to access Adj...

Page 13: ...recorded the message NONE YET will be displayed There is a maximum of 24 entries overall After exceeding 24 entries the oldest entries will be deleted to allow space for the new entries Dives are numbered starting with 1 each time DIVE or GAUG mode is activated After 24 hours elapse with no dive the first dive of the next period of operation is called Dive 1 I n the event that dive time DIVE T exc...

Page 14: ...to exit LOG DATA 1 LOG DATA 2 Dive Type no deco deco viola violation gauge Elevation SEA or EL2 EL7 surface interval dive time start end pressure of tank 1 FO2 PO2 setting of the gas used at the end of the dive DIVE Mode only maximum PO2 DIVE Mode only O2 Saturation DIVE Mode only SETUP MENU This screen allows you to adjust the Auto Dim Set Date Time and Bluetooth features SELECT ADV MODE to selec...

Page 15: ... to reduce distractions during the dive and to conserve power The i750TC allows you to customize the time interval and degree of dimming This feature may also be turned off SELECT ADV MODE to save setting OFF or 0 20 2 00 10 60 to increase value to decrease value 2 SET DATE TIME Within this menu you can set the formats date and time of day SELECT ADV MODE to save setting 12 or 24 hr Month Day or D...

Page 16: ...Bluetooth is ON the Bluetooth icon will display on the DIVE GAUGE or FREE Main screens Bluetooth is temporarily deactivated when a dive is started and re turns to sniffing mode when the i750TC enters Surface Mode SELECT ADV MODE to save setting HISTORY History is a summary of basic data recorded during all DIVE and GAUGE dives NOTE Dives made in Free mode are not shown in History or the Log mode F...

Page 17: ... DIVE COMPUTER INFO Information displayed on the DC Info screen should be recorded and kept with your sales receipt It will be required in the event that your i750TC requires factory service SELECT ADV MODE return to menu date of last factory calibration firmware revision ...

Page 18: ...Doc 12 7852 r05 8 5 16 18 Aqua Lung International Inc 2016 DIVE FEATURES ...

Page 19: ...l be displayed It will also be displayed graphically as the N2 Bar Graph see Bar Graphs later in this section As you ascend the N2 Bar Graph will recede as control shifts to slower compartments This is a feature of the decompression model that is the basis for multilevel diving one of the most important advantages that Aqua Lung dive computers offer O2 MIN OXYGEN TIME REMAINING When set for nitrox...

Page 20: ... No Decom pression time is available The i750TC monitors multiple theoretical nitrogen compartments simultaneously The N2 Bar Graph displays the one that is in control of your dive at any given time ALGORITHM The i750TC utilizes the Z algorithm to calculate nitrogen tissue loading Performance is based on Bühlmann ZHL 16C algorithm model To create even greater margins of safety with respect to deco...

Page 21: ... Safety Stop depth set for 1 second on a No Decompression dive in which depth exceeded 9 m 30 ft for 1 second a beep will sound and a Safety Stop at the depth set will appear on the Dive Main display with a countdown beginning at the Safety Stop time set and counting down to 0 00 If the Safety Stop was set for OFF the display will not appear In the event that you descend 3 m 10 ft deeper than the ...

Page 22: ...a Set Alarms setting Free Dive mode has its own alarms which emit multiple beeps multiple times which cannot be acknowledged or set to OFF Events that emit 10 beeps each sound for sec with sec silence between beeps Watch Daily Alarm Watch CDT Alarm DIVE GAUGE GTR Alarm DIVE GAUGE Turn Alarm TMT 1 only DIVE GAUGE Press Alarm TMT in use DIVE GAUGE Loss of Link Dive mode DIVE GAUGE Ascent Rate too fa...

Page 23: ...FREE DA1 to DA3 Alarms PROXIMITY OF THE TMTS TRANSMITTERS AND i750TC The TMTs emit low frequency signals that radiate out in semicircular patterns parallel to the length dimension of the TMT A coiled antenna inside the i750TC wrist unit receives the signals when it is positioned within a zone parallel to or at a 45 degree angle to the TMT as illustrated The i750TC cannot effectively receive a sign...

Page 24: ...l The link will be restored within 4 seconds after the i750TC is moved back into its correct position An interruption may also occur while the i750TC is within 3 feet 1 meter of a running DPV or shortly after a strobe flashes The link will be restored within 4 seconds after the i750TC is moved out of that area If the link is not restored within 15 seconds the audible alarm will sound dashes will r...

Page 25: ...Doc 12 7852 r05 8 5 16 25 Aqua Lung International Inc 2016 DIVE SURFACE MODE ...

Page 26: ...just Brightness screen ALT 1 ALT 2 ALT 3 ALT 4 nitrox only back to Main SELECT ADV MODE ALT 1 LAST DIVE The ALT 1 screen displays essential data from the last dive If there has been no dive within the current activation cycle the the max depth and elapsed dive time will be displayed as dashes Adjust Brightness functions the same as in the Home Menu see p 12 DIVE MAIN 10 min after a dive DIVE MAIN ...

Page 27: ...r FREE dives counting down from a maximum of 23 50 to 0 00 hr min When the DESAT countdown reaches 0 00 hr min which will generally occur prior to the FLY countdown reaching 0 00 hr min it will remain on the display as 0 00 until the Fly countdown also reaches 0 00 NOTE Desaturation requiring times greater than 24 hours will display the graphic 24 00 In the event that Time to Desaturate still rema...

Page 28: ...e calculates dive depth and time limits To do so it accounts for any residual nitrogen oxygen surface intervals the programmed gas mix and PO2 alarm setting Either NO DECO No Decompression or O2 MIN limits are displayed depending on whether nitrogen or oxygen levels will be the limiting factor The time limit will display as 1 99 minutes all times greater than 99 display as 99 NOTE Depths exceeding...

Page 29: ...e PO2 alarm value allowing it to be set Additionally the i750TC allows for each gas 1 3 to have individual PO2 alarm settings NOTE Once any Gas is set for Nitrox any other Gas set for AIR will automatically be set to 21 The AIR option will not be displayed as an FO2 setting until 24 hours elapse after the last dive NOTE When FO2 is set for AIR oxygen related data such as PO2 O2 will not be display...

Page 30: ...cting the SET option will take you to another screen where you can enter the serial number ID code for the transmitter NOTE If the TMT is set OFF for the active gas the letters SPG will be displayed in place of a pressure reading on the Main Screen NOTE Transmitter 2 cannot be set to ON unless transmitter 1 is set to ON Likewise tran mitter 3 cannot be set to ON unless transmitter 2 is also set ON...

Page 31: ...ion to scroll up decrease value or toggle setting to scroll down increase value or toggle setting exit menu DEPTH ALARM TRIGGERED flashing DIVE T ALARM TRIGGERED flashing 3 Dive T The Dive Time Alarm allows you to set an alarm to go off at a predetermined amount of dive time Settings include OFF or 10 180 min 1 Audible The Audible Alarm allows you to set audible alarms ON or OFF 2 Depth The Depth ...

Page 32: ...BAR ALARM TRIGGERED flashing N2 BAR ALARM TRIGGERED flashing DTR ALARM TRIGGERED flashing TURN PRESS ALARM TRIGGERED flashing 4 N2 Bar This feature allows you to set an alarm to go off at a predetermined percentage of N2 bar graph being filled 6 Turn Press The Turn Pressure Alarm allows you to set an alarm to go off at a designated turn pressure You may choose from OFF or 70 to 205 BAR 1000 to 300...

Page 33: ... multiple gas trans mitters SET UTILITIES Within the Set Utilities menu you can customize the following six operational functions SELECT ADV MODE to select or save option to scroll up decrease value or toggle setting to scroll down increase value or toggle setting exit menu 1 H2O TYPE Water Type The H2O Type feature allows you to set SALT or FRESH water environment for accurate depth calculations ...

Page 34: ...ions are 2 15 30 or 60 second intervals Shorter intervals will provide a more precise record of your dives NOTE New data will automatically overwrite the oldest data in memory when the memory becomes full The i750TC Log and PC Download data is stored separately in different parti tions of the memory The Log only stores a short summary of each dive Alternately the PC Download function stores much l...

Page 35: ...Doc 12 7852 r05 8 5 16 35 Aqua Lung International Inc 2016 DIVE OPERATION ...

Page 36: ...he priority of information displayed may change This is to indicate a safety recommendation warning or alarm The following information in this chapter demonstrates and describes an uneventful dive in terms of safety Alarms are described in the Complications section of this chapter WARNING Before diving with the i750TC take time to familiarize yourself with both normal and alarm conditions of opera...

Page 37: ... If Deep Stop was set to ON in the Utilities Menu the Deep Stop Preview screen is available after exceeding 24 m 80 ft of depth The Deep Stop is always at a depth half that of your maximum depth during the dive This preview screen keeps track of that depth for you stop time stop depth current depth EARMARK By pressing the Mode button during a dive you can manually record a data snapshot which can ...

Page 38: ...ive The stop time will then countdown to 0 min While Safety Stop Main is displayed you may access up to 3 ALT displays by pressing the ADV button repeatedly They are similar to the No Deco Main Dive ALT 1 and Dive ALT 2 displays respectively See Safety Stop in the Dive Features chapter for further details NOTE The i750TC does not penalize for a missed Safety Stop stop depth remaining stop time min...

Page 39: ...oundaries and spirit of the i750TC s design If you are following these dive profiles Aqua Lung advises that you should not use an i750TC If you exceed certain limits the i750TC will not be able to help you get safely back to the surface These situations exceed tested limits and can result in loss of some functions for 24 hours after the dive in which a violation occurred OVERVIEW All dives begin w...

Page 40: ...an 1 6 then a warning not to switch will display The i750TC will maintain the current gas without switching The diver may overide the i750TC and force the gas switch by pressing the SE LECT button during the DO NOT SWITCH TO message WARNING Switching to gases with a PO2 above 1 6 has a high risk of oxygen poisoning convulsions and drowning Doing so should always be avoided It is intended as a last...

Page 41: ... credit time that you receive is dependent on Depth with slightly less credit given the deeper you are below the Stop Depth indicated You should stay slightly deeper than the required Stop Depth indicated until the next shallower Stop Depth appears Then you can slowly ascend to that indicated Stop Depth but not shallower DECOMPRESSION ENTRY Upon entry into decompression deco the audible alarm will...

Page 42: ...redit begins required Decompression Stop Depths and Time will decrease toward zero The N2 Bar Graph will recede into the No Decompression zone and operation will revert to No Decompression mode message and arrows flashing N2 Bar Graph flashing missed stop depth stop time min DELAYED VIOLATION 1 DV 1 If you remain shallower than a Deco Stop Depth for more than 5 minutes operation will enter DV1 whi...

Page 43: ... Dive Gauge Free 100 m 330 ft is the depth at which the i750TC can properly perform calculations or provide accurate display information Upon ascending above the maximum functional depth current depth will be restored However the log for that dive will display dashes for max depth flashing VIOLATION GAUGE MODE VGM DURING A DIVE During Dive mode dives operation will enter VGM when Decompression req...

Page 44: ... a full 24 hour surface interval must then be served before all functions are restored flashing HIGH PO2 Warning at Alarm Set Point value minus 20 Alarm at Set Point value except in Deco then at 1 60 only Warning When PO2 partial pressure of oxygen increases to the Warning level the audible alarm sounds and the PO2 value will flash in place of TTS and DIVE T until the audible alarm is silenced fla...

Page 45: ... value decreases below 1 60 HIGH O2 SAT OXYGEN SATURATION Warning at 80 to 99 240 OTU Alarm at 100 300 OTU Warning When O2 reaches the Warning Level the audible alarm sounds and the O2 SAT saturation value will flash in place of TTS and DIVE T They will be restored when the audible alarm is silenced Alarm If O2 SAT reaches the Alarm level the audible alarm sounds The UP message up arrows and the O...

Page 46: ...udible alarm sounds and the O2 SAT value will flash in the middle of the screen When the audible alarm is silenced the message O2 SAT 100 will display solid until on the surface Alarm On Surface If O2 SAT is 100 upon surfacing while in No Decompression O2 SAT 100 will flash until the O2 SAT value decreases below 100 If O2 SAT becomes less than100 during the first 5 min on the surface the Delayed V...

Page 47: ...Doc 12 7852 r05 8 5 16 47 Aqua Lung International Inc 2016 GAUGE MODE ...

Page 48: ... be no N2 tissue saturation or gas mix values displayed GAUGE SURF MAIN post dive Surface Time hr min dive gas pressure or SPG no TMT TMT SELECT ADV MODE to access Compass Mode to access Gauge Menu to access Adjust Brightness screen ALT 1 ALT 2 ALT 3 back to Main SELECT ADV MODE Adjust Brightness functions the same as in the Home Menu see p 12 battery status to access Home Menu ...

Page 49: ...uge Menu Enter the menu by pressing the MODE button Press the SELECT button to choose options from the Gauge Menu SELECT ADV MODE exit menu step back SELECT ADV MODE to select an option to scroll up to scroll down NOTE Gauge Surface ALT screens and Menu options are similar to those described previously for Dive Mode See the Dive Surface Mode chapter for further details ...

Page 50: ...o record data earmark for download to Transmitter Switch Menu ALT 1 back to Main SELECT ADV MODE to access Adjust Brightness screen Adjust Brightness functions the same as in the Home Menu see p 12 to Compass Mode GAUGE DIVE MAIN The Gauge Dive Main provides basic information including ascent rate depth run time max depth dive time gas pressure and gas time remaining Run Timer gas pressure or SPG ...

Page 51: ...OO DEEP message with up arrows will flash and depth will only indicate dashes signifying that you are too deep The max depth on the Alt screen will also be represented by dashes The maximum functional depth Dive Gauge Free 100 m 330 ft330 is the depth at which the i750TC can properly perform calculations or provide accurate display information Upon ascending above the maximum functional depth curr...

Page 52: ...Doc 12 7852 r05 8 5 16 52 Aqua Lung International Inc 2016 FREE MODE ...

Page 53: ...ges associated with the high pressures that competitive type free diving can expose a diver to WARNINGS Ensure that you know which operating mode is selected DIVE GAUGE 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 activi...

Page 54: ...N post dive dive Surface Time min sec up to 59 59 then hr min CDT Countdown Timer min sec blank if off Dive Time min sec Max Depth battery status SELECT ADV MODE to access Free Menu to access Adjust Brightness screen ALT 1 ALT 2 back to Main SELECT ADV MODE Adjust Brightness functions the same as in the Home Menu see p 12 to access Home Menu NOTE The Free ALT screens are similar to the Dive Surfac...

Page 55: ...LECT ADV MODE exit menu step back SELECT ADV MODE to select an option to scroll up to scroll down CDT COUNTDOWN TIMER SETUP This screen allows you to set the CDT time from 0 01 9 59 min sec NOTE Setting the CDT does not start the countdown While on the Main screen the SELECT button is used to start and stop the selected timer SELECT ADV MODE to select or save option to scroll up decrease value or ...

Page 56: ...se value or toggle setting exit menu 1 H2O TYPE Water Type The H2O Type feature allows you to set SALT or FRESH water environment for accurate depth calculations 2 UNITS The Units feature allows you to select whether Metric M BAR or Imperial FT PSI units of mea sure will be displayed 3 RTI AL Repeating Time Interval Alarm The RTI Alarm allows you to set an audible alarm to go off repeatedly every ...

Page 57: ...FREE DIVE MAIN Depth Alarm Triggered flashing INITIATING A DIVE With the i750TC in Free Mode a dive will commence upon descending to 1 5 m 5 ft for longer than 5 seconds Below is a diagram to help you navigate Free Dive Mode functions The dive will end and revert to Surface Mode upon ascent to 0 9 m 3 ft of depth for at least 1 second SELECT ADV MODE ALT 1 back to Main SELECT ADV MODE to access Ad...

Page 58: ...0 99 min all times greater than 99 display as 99 N2 bar graph HIGH NITROGEN ALARM If nitrogen increase to the Deco decompression level the audible alarm will sound Temperature NO DECO no decompression and Dive T dive time values are removed They are replaced by the message GO UP VIOLA TION with Up Arrows flashing until on the surface At this time the N2 Bar Graph will also flash When the audible a...

Page 59: ...Doc 12 7852 r05 8 5 16 59 Aqua Lung International Inc 2016 COMPASS MODE ...

Page 60: ...ASS MODE Aqua Lung International Inc 2016 COMPASS DISPLAY ICONS 1 DEPTH OR SURFACE TIME 2 TIME OUT COUNTDOWN 3 ASCENT RATE 4 HEADING MARKER 5 HEADING DEGREES 6 DIVER S DIRECTION LUBBER LINE 7 RECIPRICAL HEADING MARKER 4 6 1 2 3 5 7 ...

Page 61: ... and diver s direction lubber line remain green Once a heading is set the heading degrees and diver s direction lubber line are green when on heading red when on reciprical heading and amber when off heading NOTE Similar to an analog compass magnetic and ferrous metals can cause erratic and erroneous readings WARNING You must become thoroughly familiar with setup and operation of the i750TC Digita...

Page 62: ...ation selection in the Compass Main Menu allows you to manually initiate a calibration The i750TC will guide you through the following sequential steps of calibration 1 Turn the unit face down until it beeps SELECT ADV MODE exit menu step back SELECT ADV MODE to select an option to scroll up to scroll down COMPASS MAIN MENU The Main menu allows you to adjust compass accuracy The different selectio...

Page 63: ...6 63 COMPASS MODE Aqua Lung International Inc 2016 2 Turn the unit face up until it beeps 3 Rotate the unit continually until it beeps 4 The message READY PASSED CALIBRATION or FAILED TO CALIBRATE TRY AGAIN will then appear ...

Page 64: ...graphical region SET DECLINATION MENU SET DECLINATION showing Declination East SELECT ADV MODE step back to select an option to scroll up to scroll down SELECT ADV MODE step back to select an option to scroll up to scroll down SET HEADING Pressing the Advance button while on the Compass Main screen will simultaneously set a heading and reciprical heading The message HEADING SET is confirmation of ...

Page 65: ...er 1 minute There is a 15 second countdown timer displayed before switching back to the previous operation mode You may reset the timout at any time by pressing the Select button on the i750TC countdown EARMARK By pressing the Mode button during a dive you can manually record a data snapshot which can later be accessed using the i750TC s download feature The message EARMARK APPLIED will be display...

Page 66: ...ing the alarm condition Compass Mode can then be reentered by holding SELECT for 2 sec The following alarms are those indicated without terminatining Compass Mode ASC Ascent Alarm When the ascent is faster than the recommended 9 m 30 fpm all segments flash until the ascent is slowed See pg 20 for further details Depth Alarm Depth digits flash red until shallower than the alarm depth set flashing f...

Page 67: ...Doc 12 7852 r05 8 5 16 67 Aqua Lung International Inc 2016 REFERENCE ...

Page 68: ...CARE AND CLEANING Protect your i750TC from shock excessive temperatures exposure to chemicals and tampering Protect the lens against scratches with the stick on i750TC lens protector Small scratches will naturally disappear underwater Soak and rinse the i750TC in fresh water at the end of each day of diving and check to ensure that the areas around the low pressure depth sensor PC interface data p...

Page 69: ...eives proper service by the Aqua Lung factory or an authorized regional distributor Data Retention When the battery is removed settings and nitrogen oxygen calculations for repetitive dives will be retained in volatile memory until a new battery is installed You will have the choice of saving or deleting the data The Com pass will need to be calibrated after the new battery is installed All parts ...

Page 70: ...g REMOVE O RING REPLACE BATTERY INSTALL COVER INSTALL O RING ALTITUDE SENSING AND ADJUSTMENT Prior to the first dive of a series of repetitive dives Altitude i e ambient pressure is measured upon activation of Dive Surface Mode and every 15 minutes until a dive is made or operation reverts to Watch Mode While it is operating in Watch Mode after a dive measurements are taken every 15 minutes during...

Page 71: ... 16 71 REFERENCE Aqua Lung International Inc 2016 14 000 feet At Sea Level calculations are based upon an altitude of 1828 8 meters 6 000 feet The i750TC will not function as a dive computer above 4 270 meters 14 000 feet ...

Page 72: ...Doc 12 7852 r05 8 5 16 72 Aqua Lung International Inc 2016 TECHNICAL DATA ...

Page 73: ...000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 3 17 30 2 30 2 21 2 14 2 08 2 02 1 57 1 52 1 47 1 39 1 34 1 29 40 1 49 1 21 1 15 1 11 1 08 1 05 1 02 1 00 0 57 0 55 0 53 0 51 50 1 05 0 53 0 51 0 49 0 47 0 44 0 42 0 39 0 37 0 35 0 34 0 33 60 0 48 0 37 0 35 0 33 0 32 0 30 0 28 0 26 0 24 0 23 0 22 0 21 70 0 35 0 26 0 24 0 23 0 21 0 20 0 19 0 18 0 17 0 16 0 16 0 14 80 0 26 0 19 0 18 0 17 0 1...

Page 74: ...o 2 135 EL4 7 001 to 9 000 2 136 to 2 745 EL5 9 001 to 11 000 2 746 to 3 355 EL6 11 001 to 13 000 3 356 to 3 965 EL7 13 000 3 965 OXYGEN EXPOSURE LIMITS from NOAA Diving Manual PO2 ATA MAX DURATION SINGLE EXPOSURE MIN MAX TOTAL DURATION 24 HOUR DAY MIN 0 60 720 720 0 70 570 570 0 80 450 450 0 90 360 360 1 00 300 300 1 10 240 270 1 20 210 240 1 30 180 210 1 40 150 180 1 50 120 180 1 60 45 150 ...

Page 75: ...ile activated Does not measure ambient pressure when wet Compensates for Altitudes above sea level beginning at 3 001 feet 916 meters elevation and every 1 000 feet 305 meters higher Power User replacement battery 1 3 vdc CR2 800 mAh Lithium battery Duracell Energizer Panasonic or Rayovac recommended 15 oper ating hours at 100 brightness with Auto Dim set off Shelf life Up to 5 years dependent on ...

Page 76: ...1 second Decompression Stop Time 0 to 999 min 1 minute DIVE GAUGE Elapsed Dive Time 0 to 999 min 1 minute Free Elapsed Dive Time 0 00 to 9 59 min sec 1 second Surface Interval Time 0 00 to 23 59 hr min 1 minute Free Surface Interval Time 0 00 to 59 59 min sec 1 second then 1 00 to 23 59 hr min 1 minute Time to Fly Desaturate 23 50 to 0 00 hr min 1 minute starting 10 min after the dive Temperature ...

Page 77: ...ation This equip ment 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 communications There is no guarantee that interference will not occur in a particular installation If this equipment does cause interference to radio or television reception which can be determined by turning the equip...

Page 78: ... Feet depth GAU GAUG GAUGE Digital Gauge Dive Mode GTR Gas Time Remaining H2O Water HIST History IMP Imperial measure LAST Previous dive M Meters depth MET Metric MFD Maximum Functional Depth equipment limits MIN Minutes time MOD Maximum Operating Depth N2 Nitrogen N2 Bar Graph Tissue Loading Bar Graph NDL No Decompression Limit NO DECO No Decompression DTR O2 Oxygen O2 MIN Oxygen Time Remaining D...

Page 79: ...www aqualung com ...

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