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Cressi Newton Instruction Manual

1. The word DEEPST ON will be displayed this last indicator will flash By pressing the UP or DOWN button the word DEEPST OFF will appear Confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu Keep pressing and holding the central button to return to the main menu after another acoustic signal Alternatively the computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen ALTITUDE When diving at a location above sea level it is important to check that the appropriate altitude level has been set Press the UP button to move up to dive set mode DIVE S enter in this mode by pressing the Mode button Scroll with the UP or DOWN button until the ALT indicator starts flashing Therefore press the Mode button and change the data with the UP DOWN button in order to visualise the data in ascending or descending order one two or three small mountains that symbolise the altitude level chosen Confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu Keep pressing and holding the Mode button to return to the main menu after another acoustic signal Alternatively the computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen The screen shows the corresponding altitude levels indicated as follows No
2. 1 bar by pressing the UP or DOWN button Confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu Keep pressing and holding the Mode button to return to the main menu after another acoustic signal Alternatively the computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen Mix2 Partial Oxygen Pressure PO2 setting Press the UP button to move up to dive set mode DIVE S enter in this mode by pressing the Mode button The indication of the partial oxygen pressure PO2 and the Mix1 indication will flash Press the UP button twice The word Mix2 will appear together with the PO2 value Now press the Mode button again The display will show just the highlighted item flashing together with the corresponding maximum operating depth Set the desired values between 1 2 and 1 6 bar with variations of 0 1 bar by pressing the UP or DOWN button Confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu Keep pressing and holding the Mode button to return to the main menu after another acoustic signal Alternatively the computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen IMPORTANT the computer maintains the PO2 setting until it is manually reset by the diver on different values or until the
3. 6 Care and maintenance INDEX CRESS ressi com 8 COMPUTER CONTROL OPERATION OF NEWTON COMPUTER WATCH CLOCK Newton has a very intuitive display designed to support the diver during any operation It has four buttons around it two on the upper side LIGHT and MODE and two on the lower side DOWN and UP with which the instrument is controlled BUTTONS Each button has a specific function which is described below LIGHT Button This button is used to illuminate the display and for the shutdown of the device MODE Button This button is used to enter the menus The button can be pressed briefly or it can be pressed and held for a moment to achieve different effects Within the clock function press and hold the button 4 sec to access the dive computer UP button This button is used to move up through menus and to increase values DOWN button This button is used to move down through menus and to decrease values The clock s standard screen shows the time in the center of the display By pressing the UP and DOWN buttons the screen displays the following additional indications and information SEC Indicates that the information displayed under the time are the seconds DATE Indicates that the information displayed under the time is the date day and month T2 Indicates that the information displayed under the time is the second time zone AL Indicates that the information displayed under the time is the alarm time
4. F 277773 N AUTOMATIC RETURN OR WITH LONG MODE BUTTON AUTOMATIC RETURN OR WITH LONG MODE BUTTON INDEX amy cressi com WHILE DIVING COMPUTER FUNCTIONS The Newton computer can be setin three diverse modes 1 AIR DIVE MODE if dives are performed with air and you want to use a decompression computation 2 NITROX DIVE MODE if dives are performed with Nitrox and you want to use a decompression computation 3 GAGE if you do not want to use a decompression calculation but you have the time and depth indications REMARK The Newton computer is factory set on the AIR DIVE MODE function for air dives with the PO2 pressure set on 1 4 and the FO2 fraction of the oxygen set on 21 To set FO2 values different from Air 21 activate the NITROX DIVE MODE WARNING Before diving make sure that the computer is not locked check for the presence of the word lock on the upper left part of the screen In this case unlock it placing the SET LOCK menu in the OFF position The word lock will disappear WARNING Before diving set the computer to PRE DIVE by pressing the MODE button without releasing it or by accessing the ENTR DIVE menu In this way the computer will start processing the dive parameters within a maximum of 2 seconds after reaching a depth of 1 2 m In any case the dive computer is automatically activated within 20 seconds of reaching a depth of 1 2 m DIVING WITHIN NO DECOMPRESSION LIMITS AIR DIVE MODE FUNCTIO
5. MODE S menu is set in AIR REMARK By varying the maximum PO2 set and the percentage of oxygen in the FO2 mixture the computer indicates the maximum depth which may be reached IMPORTANT The PO2 is set by the manufacturer on the default value of 1 4 bar for both air dives and Nitrox dives This way the safety of the diver is ensured by following the most conservative values recommended for sport dives However you can select another PO2 value as indicated in the chapter on Nitrox dives The value set will be saved in the computer until the diver resets it or until the MODE S menu is setin AIR NITROX PERCENTAGE OF OXYGEN FO2 The percentage of oxygen FO2 can be changed only when the computer is set in SET NITROX MODE With this setting you can decide the type of dive with air Dive Air Program with fraction of oxygen at 21 or using one or two Nitrox hyper oxygenated mixtures Dive Nitrox Program Mix1 percentage of oxygen FO2 setting To set the correct percentage of Oxygen contained in the Nitrox mixture press the UP button to move up to the DIVE S mode Enter in this mode by pressing the Mode button The indication of the partial oxygen pressure PO2 and the Mix1 indicator will flash Press the UP button The indicator of the percentage fraction of oxygen FO2 will flash Press the Mode button The display will show just the highlighted item FO2 flashing together with the corresponding maximum operating depth that can vary by
6. Mix2 will appear with the parameters of the second mixture Now pressing the UP or DOWN button the Mix1 data will be displayed Remark The Mix1 main mixture icon will not flash in the cases in which during the descent the maximum operating depth of the second mixture Mix2 is not exceeded DANGER In case the current depth is greater than the maximum allowable depth of Mix2 the Newton computer will not allow the gas switching ASCENT RATE The ascent rate is shown on the display by a dot indicator at the centre operating according to the table in the figure alongside If during surfacing the maximum allowed ascent rate is exceeded the display will show at the same time the word SLOW and three arrows flashing and an alarm will sound Under these conditions surfacing must be stopped until the SLOW icon disappears and the display returns to standard conditions DANGER Surfacing too fast dramatically increases the risk of decompression sickness Cressi recommends at the end of each dive a safety stop of 3 min at 5 6 metres which will be assisted by the computer see next chapter SAFETY STOP Newton is programmed to automatically signal a safety stop after each dive at a depth greater than 10 m as recommended by the training centres and the most recent studies on diving physiology This stop should be carried out ata depth between 5 and 3 metres for 3 minutes The stop is indicated by the display with the STOP icon the display under this
7. at the SET LOCK menu press MODE The text OFF will appear Press the UP or DOWN button The text ON will appear Confirm by pressing the Mode button for a few seconds until hearing a beep to confirm the exit from the menu Alternatively the computer will change the settings automatically with a beep and then return to the main screen The text LOCK will always be visible in the upper left regardless of which menu is set WARNING When the dive computer is locked it is recommended to unlock it before each dive In fact for security reasons the computer will remain locked even during a dive and it may only be unlocked by returning to the surface and lifting it out of the water Once unlocked it will not consider the time spent diving up to that point It is therefore recommended not to proceed with a dive immediately after unlocking it but to wait 24 hours for complete desaturation ag MAXDEPTH m un un i lt l AFTER 4 amp pn ul i AUTOMATIC RETURN CRESS TR 77777777150 EE OPERATION OF THE DIVE COMPUTER As noted to access the dive computer when Newton is in the watch mode press and hold the MODE button or with the UP or DOWN button scroll until reaching the ENTR DIVE menu and then press the MODE button The PRE DIVE screen will appear The following data will be seen on this screen Oxygen partial pressure Type and percentage of respiratory mixture used Air or Nitro
8. centre according to their exclusive judgement and the product shall be repaired or replaced within a reasonable time If the product is deemed non compliant with the terms and conditions of this limited warranty Cressi or a Cressi authorised service centre reserve the right to charge for the service and or repair costs incurred Other important notes In case of product repair or replacement the data and contents stored in it may be lost Cressi or a Cressi authorised service centre will not be liable for any damage or loss of contents or data during product repair or replacement Cressi recommends making back ups or to take written note of each important content or data stored in the product The Product or part of it when replaced will become property of Cressi In case a refund is granted the related product must be returned to a Cressi authorised service centre since it becomes a property of Cressi and or the Cressi authorised centre In case of repair or replacement of the Product Cressi or a Cressi authorised service centre can use new as new or repaired products or parts Exceptions and limitations This limited warranty does not cover 1 a product deterioration due to standard wear b defects caused by improper use including but not limited to defects caused by sharp objects bending compression fall shocks etc c defects or damages due to improper use of the product including use non compliant with the instruct
9. dive performed with the GAGE function Therefore in this period of time it will not allow the device to switch to the dive computer mode for the decompression calculation DANGER Should you decide to reset the device the nitrogen memory will be cancelled Therefore the device will not be able to calculate the following dive Before using this function wait for at least 48 hours after the last diving activity USE OF THE COMPUTER WITH POOR VISIBILITY During your diving activity light condition may not allow easy reading of the display Therefore you can switch on the backlight by pressing the LIGHT key The displays backlight lasts for a few seconds and then it automatically switches off MAX DIVE T INDE CRESS TR 77777777150 ON SURFACE AFTER DIVING DATA DISPLAY AND MANAGEMENT This chapter deals with allthe on surface functions including data processing after a dive By usingthe UP or DOWN button it will be possible to activate in sequence the Following functions LOG BOOK dive log HISTORY dive history and PC LINK Data transfer to PC by means of interface SURFACE INTERVAL After a dive with AIR DIVE MODE or NITROX DIVE MODE function when you reach depths below 0 8 m the display provides the following information 1 Surface interval given in hours and minutes SURF T 2 Desaturation time DESAT to be respected before embarking on a flight in hours and minutes 2 NO FLY icon It means that flights o
10. from the most recent dive in chronological order The main screen displays the following information 4 Dive s year month and day 0 Dive number the most recent dive s information is given first When more than 60 dives are carried out the oldest dives are deleted MAXDEPTH__m ann den aun z d lt 6 TIME DISPLAY N i wes wen GAGE i A TIME DISPLAY LOCKED DIVE COMPUTER MAXDEPTH m an AUTOMATIC RETURN OR WITH LONG MODE BUTTON Pa N 1430 Biet AUTOMATIC RETURN OR WITH LONG MODE BUTTON INDEX a a a a a CRESS W Maximum depth reached during the dive MAX Total time of the dive in minutes DIVE T Decompression dive DECO Indication of the altitude level of the dive When diving with Nitrox or with two mixtures the graphic indicates the Central Nervous System O2 oxygen toxicity level at the end of the dive m3 5 1 The screen will display all icons related to the alarms which have possibly engaged during the ii F BEEP dive such as PO2 Po2 alarm SLOW maximum ascent rate alarm and so on 1 kr the AUTOMATIC In the second screen the following will be displayed AL WITH LONG MODE BUTTON q Dive s starting time 0 Type of mixture used if in air the word AIR will appear if Nitrox was used the display will show MX1 with the Fo2 0 Minimum water temperature 1 Safety Factor set SF 0 1 2 The third screen will be available only in
11. is used to illuminate the display and for LIGHT the shutdown of the device MODE Mode Button This button is used to enter the menus The button can be pressed briefly or it can be pressed and held for a moment to achieve different effects Within the clock function press and hold the button 4 sec to access the dive computer DOWN button This button is used to move down through menus and to decrease values UP button This button is used to UP move up through menus and to increase values DOWN TIME DISPLAY LOCKED DIVE COMPUTER TIME DISPLAY SECONDS TIME DISPLAY DATE DUAL TIME TIME DISPLAY ALARM ON TIME DISPLAY ALARM OFF m wmr g CHRONO STOP CHRONO SPLIT TIME 1 CHRONO SPLIT TIME 2 20 CHRONO RESET INDE CRESS W SEE ACTIVATING THE DIVE COMPUTER The dive computer can be accessed in two ways The first is by pressing and holding the MODE button so that the DIVE indication is displayed Immediately after the MODE button is released the PRE DIVE screen will appear The second way is to scroll through the menus with the UP or DOWN button until ENTR DIVE appears and then press the MODE button The DIVE indication will appear first and then the PRE DIVE screen will appear If the dive computer is locked the LOCK indication will appear In this case unlock the computer before accessing it see paragraph Menu Set Lock SET TIME MENU Adjusting the time date and alarm Pr
12. mountain from 0 to 700 m One mountain from 700 to 1 500 m Two mountains from 1 500 to 2 400 m Three mountains from 2 400 to 3 700 m Each icon indicates that the computer has automatically changed its mathematical model depending on the altitude set This must obviously correspond to the real altitude reached and must be comprised in the altitude level intervals of the computer none one two or three mountains It is important to remember that when diving at higher altitudes higher than normal the body experiences alterations due to nitrogen oversaturation which must rebalance with the external environment In the same way it is important to remember that due to lower partial pressure of the oxygen in the atmosphere our body needs an acclimatisation period It is therefore recommended after arriving at a location above sea level to wait at least 12 24 hours before diving DANGER Newton does not automatically handle dives at a location above sea level Thus it is mandatory to correctly set the altitude level and to respect the acclimatisation period before diving DANGER Diving at altitudes greater than 3 000 m above sea level involves an increased risk of decompression sickness A MAX N INS Zen DEEP stop O2 MAXDEPTH m aun sun ann i L gt 2 ohana m D __BEEP Lonc prii 3 ail gp pail ay Ai KR ab N Lee ci Ss amp gt 2 f_ an car AUTOMATIC RETURN OR WITH LON
13. not be able to calculate the following dive Before using this function wait for at least 48 hours after the last diving activity To access the GAGE program press the UP or DOWN button until GAGE screen is displayed then press the Mode button The word OFF ON will flash By pressing the UP or DOWN button the Gage program will be connected or disconnected ON OFF When the Gage function is active the MODE S DIVE S and PLAN mode are disabled and on the lower right section of the display it will appear the G icon 2 i ij 3 ij i ij RETURN OR REMARK the Newton computer is factory set on the SET MODE S AIR MODE function Erny MM MODE BUTTON REMARK the depth sensor provides indications between 0 and 120 m AUTOMATIC RETURN OR WITH LONG MODE BUTTON LONG x2 i Q z CRESS cressi com E SYSTEM MODE Units of measure setting The Newton computer can make the calculations by metric units depth expressed in metres and temperature expressed in C or in imperial units feet and F To change the unit of measurement press the UP or DOWN button up to SYSTEM mode then press the Mode button until the word S UNIT set unit is displayed with the indication C m or F ft Then press the Mode button The indications start flashing To change them press the UP or DOWN button Confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from
14. pressing the UP or DOWN button of the device Once the desired setting is reached values between 21 and 50 with variations of 1 of O2 confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu Keep pressing and holding the Mode button to return to the main menu after another acoustic signal Alternatively the computer will modify the automatic setting by issuing an acoustic BEEP Lonc aN BEEF ons lg m z DEEP stop Oz MAXDEPTH_m ama aoe __ BEEP Lonc 3 BEEP Lonc TALA lo m ln 4 fe 3 le ty z gt id 5 a 3 3 Pi ren ala IP he loc mi aft i 4 CRESS W ma signal to return then to the main screen REMARK The percentage of oxygen FO2 setin the Mix1 is between 21 and 50 Mix2 Percentage of Oxygen FO2 setting To set the correct percentage of Oxygen contained in the Nitrox mixture press the UP button to move up to the DIVE S mode Enter in this mode by pressing the Mode button The indication of the partial oxygen pressure PO2 and the Mix1 indication will flash Press the UP button three times until you see the word Mix2 flashing and the indicator of the Mix2 percentage fraction of oxygen Press the Mode button The display will show just the highlighted item FO2 flashing together with the corresponding maximum operating depth that can vary by pressing the DOWN or UP button of the d
15. recommended to comply with the maximum depth allowed by the selected Nitrox mixture INDE MAX DIVE T 1e aq MAXDIVET D tt an A bie DIVING WITH NITROX During a Nitrox dive within the no decompression limits all the information related to a standard dive with air will be provided as well as ot 1 Mx1 or Mx2 or O2 Nitrox dive indicator i 2 Graph representing CNS O2 toxicity level gt 6 am 3 Indicator of the mixture used MIX1 or MIX2 le o The second screen after pressing the UP button displays the same settings as the DIVE AIR but of course BEEP BEEP BEEP BEEP concerning the nitrox mixture used in that moment MIX1 or MIX2 a u w gt _ gt Gap upu oD CNS TOXICITY DISPLAY The Newton computer by Cressi is able to display a graph of the oxygen toxicity level for the Central Nervous System CNS This is related to the Partial Oxygen Pressure and to the time of the diver s exposure to high Partial Oxygen Pressure Po2 The level of toxicity of the Oxygen is represented in the display column consisting of a 5 segment bar which show the increasing amount of accumulated oxygen When all the segments are lit up it indicates that 100 of the maximum tolerance allowable to the CNS has been reached and serious danger of hyperoxia exists It is important to be able to constantly monitor this data that being function of the Partial Oxygen Pressure and the time of e
16. that it exactly corresponds to the one in the cylinder BEFORE ANITROX DIVE The Newton computer always keeps the AIR DIVE MODE program switched on until the diver sets it for the use with Nitrox mixtures in NITROX DIVE MODE chapter DIVE SET MODE Dive parameters setting In this case the display will show the MX 1 icon which will stay on during the dive and as long as Newton remains set on NITROX MODE Once the Nitrox program is on you have to set the exact values of oxygen percentage FO2 contained in the cylinder to be used during the dive after having meticulously analysed its content so the computer is able to adapt its computing algorithm to the new parameters DANGER The use of the computer with hyper oxygenated nitrox mixtures is exclusively intended for divers who have attended a full training course in the use of such mixtures DANGER do not dive with cylinders containing nitrox mixtures whose percentages of oxygen has not been personally checked IMPORTANT Check the FO2 value percentage of oxygen set on the computer prior to diving This can AUTOMATIC RETURN OR WITH LONG MODE BUTTON AUTOMATIC RETURN OR WITH LONG MODE BUTTON CRESS M ma be done on surface by means of the main screen PRE DIVE and the DIVE SET screen which allow visualisation of the previously set parameters IMPORTANT Under the same dive conditions a Nitrox mixture requires longer no decompression times than air It is
17. the menu Keep pressing and holding the Mode button to return to the main menu after another acoustic signal Alternatively the computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen Device reset Desaturation resetting To carry out the desaturation resetting of the device press the UP or DOWN button up to SYSTEM mode then press the Mode button until the word S UNITS set units is displayed with the indication C m or F ft By pressing the UP or DOWN button the word S RESET_NO system reset will be displayed Press the Mode button The word WILL NOT flash Then by pressing the UP or DOWN button the word YES will appear Now press the Mode button again The word SURE _NO will appear By pressing the UP or DOWN button the word YES will appear Press the Mode button and wait for a sound signal dots and the word DONE are displayed to confirm that the resetting of the device has been made Then it will return to the main screen With the reset function all the calculations related to desaturation eventually in course are set to zero REMARK Dive logbook profile and historic memory remain stored in the memory even after the device s reset REMARK this function may be especially useful in case of device s renting by Diving Centres DANGER Do not reset your device if it has to be used to calculate subsequent dives a ama mn fms a fns Y fn an we Bowe A
18. water after using dry it carefully and do not store if wet avoid contact with heavy equipment like diving cylinders IMPORTANT avoid contact between the computer and solvents or chemical substances Do not use compressed air to dry the computer The button does not need any particular care never grease with oil or spray of any kind REMARK When replacing the battery check its housing should any case of moisture be visible please have the device checked by an authorised service centre Should you notice any anomaly in functioning do not use the device to dive and have it checked by an authorised Cressi retailer BATTERY REPLACEMENT Replacing the battery is a very simple operation which does not require any special service and which can be carried out by the user It must be done every time the device display shows the low battery symbol IMPORTANT when replacing the battery all information related to desaturation time and date will be lost Reset the time and date in order to get correct entries in your computer s logbook Do not replace the battery when desaturation is in progress since all the information related to desaturation computing will be cancelled In this case do not dive for the next 48 hours After the battery replacement all settings go back to the latest value set by the user Time and date must be reset To replace the battery with a screwdriver unscrew the two screws from the cover on the back of the instrument Re
19. 4 m to a minimum of 3 m by steps of 3 min 3 minutes 3 Duration in minutes for the first decompression stage the deepest 4 TOTAL icon indicating the total ascent time that is the time required to ascend to the deepest stage respecting the ascent rate plus the stop time at that depth and any other subsequent stop indicating the deep stop if necessary plus the safety stop time plus the time required to reach the surface after completing the decompression stages 5 DIVE T icon giving the total time spent while diving REMARK In this case the maximum depth can be displayed by pressing the UP button REMARK In case the deepest stage is a Deep Stop by pressing the UP key you will see always on the right top corner the depth and duration of the first stage not Deep Stop DANGER NEVER ascend above a decompression depth To avoid this situation you should ascend at a depth slightly below the recommended decompression stop depth but still within the depth range established for decompression and identified by the instrument with the two icons which are simultaneously lit but not flashing Please remember that under these conditions the amount of air you need to complete your dive increases Omitted decompression stage alarm If by any reason the decompression stage is forced by surfacing above the depth given by the computer an alarm will sound and the down arrow of the decompression icon will flash on the display until the
20. CE AFTER DIVING page 19 Data display and management page 19 Surface interval page 19 PLAN function Dive plan page 19 LOG BOOK function Dive log page 19 HISTORY function Dive history page 20 DIVE PROFILE function Dive profile page 20 PC LINK function Pc compatible interface page 20 System Reset Device reset page 21 CRESS M Congratulations on your purchase of Newton underwater computer watch a sophisticated and complete INDE device which offers the utmost safety efficiency and reliability Always keep this manual with your Newton Main features WATCH 12 24 hour display with minutes and seconds Calendar Precision chronometer Two time zones Alarm DIVE COMPUTER CRESSI RGBM algorithm New algorithm created through a collaboration between Cressi and Bruce Wienke based on the Haldane model integrated with RGBM factors for safe decompression calculations in repetitive multi day dives Tissues 9 with saturation half times between 2 5 and 480 minutes Dive program Full processing of dive data including decompression if applicable for every dive performed with Air or Nitrox Possibility of using two Nitrox hyper oxygenated mixtures selected at any time of the dive Full setting of FO2 oxygen percentage and PO2 partial oxygen pressure parameters with the option to set PO2 between 1 2 bar and 1 6 bar FO2 from 21 to 50 for the first mixture and from 21 to 99 for the second Option to take a
21. COURAGES NITROX DIVES WITHOUT PROPER TRAINING NITROX DIVES WILL EXPOSE THE DIVER TO RISKS DIFFERENT FROM THOSE OF AIR DIVES INCLUDING SERIOUS PHYSICAL DAMAGES AND IN EXTREME CASES EVEN DEATH DANGER FOR SAFETY REASONS THE NEWTON COMPUTER USES THE FACTORY SET LIMIT OF PO2 SET AT 1 4 BAR EVEN FOR AIR DIVES IF YOU NEED TO INCREASE THE SAFETY MARGIN YOU CAN SET PO2 TO LOWER VALUES UP TO 1 2 BAR WITH REDUCTIONS OF 0 1 BAR IMPORTANT after a dive with Newton in Gage mode depth gauge timer the device will not make saturation and desaturation calculations for the next 48 hours IMPORTANT avoid all high risk profile dives such as the so called yo yo dive reversed profile dives or repetitive dives in the same day or in consecutive days They are potentially risky activities and involve a high risk of decompression sickness IMPORTANT Currently no validated scientific literature allows diving more than twice a day for periods of one or more weeks without the risk of decompression sickness For your own safety it is important to avoid diving for more than two times a day It is recommended to take a rest of at least 2 hours between two subsequent dives The next repetitive dive shall be shallower and its minimum duration shall be of 15 minutes INDEX CRESS M IMPORTANT please use the most conservative safety factor SF1 and SF2 any time you are aware offactors that might increase the risk of decompression sickness By doing so yo
22. CRESS NEWTON cressi com CRESS CRESS M INDEX CARE AND MAINTENANCE page 21 Main features page 3 Battery replacement page 21 General instructions and safety measures page 3 TECHNICAL SPECIFICATIONS page 22 Introduction page 4 WARRANTY page 22 COMPUTER CONTROL page 5 How the computer works page 5 Activating the dive computer page 6 SET TIME menu Setting the Date and Time page 6 SET LOCK menu Locking the dive computer page 6 Operation of the dive computer page 7 BEFORE DIVING page 8 SET MODE Dive mode setting page 8 DIVE SET mode Oxygen partial pressure PO2 page 9 Nitrox Percentage of oxygen FO2 page 9 Dive safety factor SF page 10 Deep Stop page 11 Altitude page 11 PLAN mode Dive planning page 12 GAGE mode Depth gauge and timer page 12 SYSTEM mode Units of measure setting and reset page 13 WHILE DIVING COMPUTER FUNCTIONS page 14 No decompression dive page 14 SET AIR MODE function Dive with air page 14 SET NITROX MODE function Dive with Nitrox page 14 Before a Nitrox dive page 14 Diving with Nitrox page 15 CNS toxicity display page 15 PO2 alarm page 15 Diving with two mixtures Gas switching page 16 Ascent rate page 16 Safety Stop page 16 Decompression warning alarm page 17 Deep Stop page 17 Diving outside no decompression limits with decompression page 17 Omitted decompression stage alarm page 17 GAGE function depth gauge and timer page 18 Use of the computer with poor visibility page 18 ON SURFA
23. EEP STOP ON DEEP STOP OFF BEEP BEEP BEEP BEEP A rt 7 DEPTH m ann ana aun z i sae 2 1 m am AU Failure to observe deco depth lower depth BEEP BEEP J uf m min STOP MAXDEPTH M X min DEPTH__ m a ann Errr N No FLY PRE DIVE LOG BOOK Failure to observe deco depth greater depth fa CRESS cressi com ISS flash fi GAGE FUNCTION depth gauge and timer The Newton computer is equipped with a third dive computing program GAGE that does not perform any saturation and desaturation calculation but it operates as a basic device indicating dive depth and time as well as some accessory data Under these conditions the dive must be programmed with specific decompression software and carried out according to proper dive tables For such ends Cressi reminds that all sport dives must be conducted within the no decompression limits and at a maximum depth of 40 m limit of sport dives Exceeding these limits dramatically increases the possibility of decompression sickness IMPORTANT Newton is designed for sport diving only and not for commercial or professional use which require longer dive times and greater depths consequently increasing the risk of decompression sickness DANGER Cressi discourages diving with gaseous mixtures other than air without proper training The use of technical dives may expose the diver to different risks than those of sport div
24. G MODE BUTTON DEEP stop Oz MAXDEPTH om DEEP STOP FA k AUTOMATIC RETURN OR WITH LONG MODE BUTTON MAX Prii g EEI DEEP stop Oz MAXDEPTH om den sun aun DEEP stop Oz u 21 eii Jat TA AUTOMATIC RETURN OR WITH LONG MODE BUTTON CRESS E PLAN MODE Dive planning While on surface you can access the PLAN function in order to visualise depending on the mixture used Nitrox or Air the remaining time available at different depths no decompression limits The values are given INDE dives in such case Newton takes into account the residual nitrogen therefore reducing the times within the no both for the first of a possible series of dives and during the surface interval between two or more subsequent 2 o a r decompression limits To access the PLAN MODE once the computer is on press the UP button until PLAN is Ro Hy ee EGE if ESO oi EIN MAXDEPTH _m aun aun displayed Then press the Mode button The screen displays the values of the no decompression limits no decompression times related to the different depths between 9 m and 48 m with manual steps of 3 m achieved by pressing the UP or DOWN button Keep the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu REMARK The PLAN function will be switched off if the computer shows Error or in the case it is set in the GAGE function GAGE MODE depth gau
25. In this last case you can set all the parameters related to the mixture of our dive from the maximum allowed PO2 value between 1 2 bar and 1 6 bar to the mixture s oxygen percentage FO2 between 21 and 99 of O2 Additionally the device may be set by the user for either metric m C or feet system ft F Newton dive computer watch can be connected to a personal computer by means of the Cressi interface accessory and the related software accessory It is very important to carefully read this user manual and to perfectly understand the meaning otherwise serious damage can be caused to your health This manual is intended to guide the user to comprehend all the functions of the computer before using it in diving The default setting on the Cressi Newton computer watch is the clock function To switch to the dive computer if it was not specially locked press and hold the MODE button or scroll up to the ENTR DIVE menu While submerged the dive computer is automatically activated at depths greater than 1 2 m When the dive computer is enabled the display shows the PRE DIVE mode and the different functions are set through the use of buttons as explained below In order to understand all the computer s functions and their meaning the manual is divided into five main chapters dealing with every possible use 1 General instructions and safety measures 2 Computer control 3 Before diving 4 While diving 5 On surface after diving
26. LY IT IS RECOMMENDED TO HAVE A COMPLETE MEDICAL EXAMINATION PRIOR TO STARTING ANY UNDERWATER DIVING ACTIVITY AND TO ASSESS ONE S PHYSICAL CONDITION BEFORE EACH DIVE IT IS IMPORTANT TO REMEMBER THAT CIRCUMSTANCES SUCH AS COLD TEMPERATURE LESS THAN 10 C NOT OPTIMAL PHYSICAL CONDITION MULTIPLE OR SUBSEQUENT DIVES DIVER S FATIGUE CONSUMPTION OF ALCOHOL DRUGS OR MEDICATION AND DEHYDRATION MAY INCREASE THE RISK OF DECOMPRESSION SICKNESS PLEASE AVOID ALL THESE SITUATIONS AS WELL AS ANY OTHER THAT MIGHT ENDANGER YOUR LIFE EVERYONE HAS TO BE RESPONSIBLE FOR ONE S OWN SAFETY IMPORTANT this device should be used only by properly trained and certified divers No computer will in fact replace proper underwater training Please remember that a dive s safety is only guaranteed by a correct preparation IMPORTANT Newton computer by Cressi is designed for sport diving only and not for commercial or professional use which require longer dive times and greater depths consequently increasing the risk of decompression sickness IMPORTANT before using the computer please check the battery life status and the indications on the display DO NOT dive if these indications are not perfectly clear and especially if the battery is low IMPORTANT while diving be equipped with a depth gauge a manometer a diving timer or watch and decompression tables Always make sure that your diving cylinders pressure is the correct one for the planned dive and
27. N Dive with air When set in AIR DIVE MODE during a dive within the no decompression limits the display will show the following information 1 Current deep value Depth m 2 Non decompression time No Deco min 3 Max depth reached Max m 4 Elapsed dive time Dive T min 5 Ascent rate indicator 6 Indicator or altitude level if set 7 Current temperature expressed in C or F Further important information may be obtained by pressing the UP button during the dive and represent 1 Maximum PO2 set 2 Oxygen percentage of the selected mixture Air if FO2 21 and PO2 1 4 3 Maximum depth which can be reached depending on the maximum PO2 set 4 The Safety Factor SF NITROX DIVE MODE FUNCTION Dive with Nitrox The Newton computer keeps the setting of the percentage of Oxygen FO2 until the diver manually resets it to different values or until the DIVE MODE menu is set in AIR Itis important to understand that Artificial respiratory mixtures may expose the diver to significant risks unless they are perfectly known analysed and studied in all the aspects related to underwater diving activities It is mandatory to understand that THE MIXTURE BEING BREATHED MUST BE EXACTLY EQUAL TO THE ONE SET ON THE COMPUTER OTHERWISE DECOMPRESSION AND TOXICITY INFORMATION provided by the computer WILL BE DANGEROUS FORTHE LIFE OF THE DIVER Before after and during Nitrox dive itis mandatory to verify the percentage of Oxygen so
28. Nitrox dive after one with air even while desaturating Option to set Deco decompressive computations or Gage depth gauge and timer Deep Stop can be turned on or off Display with PCD System for perfect understanding and readability of values User replaceable batteries Dive planning with manual safety curve scrolling User can switch unit of measurement from Metric meters and C to Imperial ft F system Sound and visual alarms graphic CNS oxygen toxicity indicator Backlit display Log book 60 dives Dive history saved Option for full desaturation reset if needed helpful when renting the device PC Mac interface with general data and dive profile optional GENERAL INSTRUCTIONS AND SAFETY MEASURES IMPORTANT Read the instructions Carefully read this user manual including the safety measures paragraphs Make sure you perfectly understand the use functions and limits of the device before using it DO NOT use the device without having read every part of this instructions booklet IMPORTANT this device is designed to be a dive aid and does not replace the use of dive tables DANGER AN UNDERWATER DIVING COMPUTER CAN NEVER COMPLETELY ELIMINATE THE RISK OF DECOMPRESSION SICKNESS EMBOLISM IT MUST BE CLEAR THE AN UNDERWATER DIVING COMPUTER CAN NEVER COMPLETELY ELIMINATE THE RISK OF DECOMPRESSION SICKNESS IN FACT THE COMPUTER CANNOT TAKE INTO ACCOUNT THE PHYSICAL CONDITIONS OF THE DIVER WHICH MAY VARY DAI
29. T OR IMPLICIT HOWEVER THIS LIMITED WARRANTY DOES NOT PREJUDICE THE RIGHTS GRANTED BY THE APPLICABLE NATIONAL REGULATIONS CRESSI SHALL NOT BE LIABLE FOR SPECIAL INCIDENTAL PUNITIVE OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS OR FORESEEN BENEFITS LOSS OF SAVINGS OR INCOME DATA LOSS PUNITIVE DAMAGES UNSUCCESSFUL USE OF THE PRODUCT OR ASSOCIATED EQUIPMENT IF ANY COST OF THE CAPITAL COST OF THE REPLACEMENT EQUIPMENT OR STRUCTURES DOWNTIME CLAIMS BY THIRD PARTIES INCLUDING CUSTOMERS AND DAMAGES TO PROPERTIES CAUSED BY THE PURCHASE OR USE OF THE PRODUCT OR RESULTING FROM BREACH OF WARRANTY OR CONTRACT NEGLIGENCE ABSOLUTE RESPONSIBILITY OR OTHER LEGAL MEANS EVEN IF CRESSI KNEW THE PROBABILITY OF SUCH DAMAGES CRESSI SHALL NOT BE LIABLE FOR DELAYS IN THE PROVISION OF THE SERVICE TO WHICH THIS LIMITED WARRANTY REFERS OR OF THE IMPOSSIBILITY OF USE DURING THE PRODUCT REPAIR PERIOD Cressi Sub s p a Via Gelasio Adamoli 501 16165 Genova Italia EU fe 1
30. condition clearly indicates the duration in minutes of the stop and the depth expressed in metres or feet The safety stop is not mandatory yet it is strongly recommended if for instance the maximum ascent rate is repeatedly exceeded Cressi always recommends respecting it in order to avoid safety issues REMARK During the safety stop the maximum depth can be displayed by pressing the UP button DANGER At the end of the safety stop many divers are used to quickly reach the surface sometimes even inflating the BCD It is a serious mistake which may lead to decompression sickness The last metres before surface are in fact the most critical and the percentage variations of the pressure are significant The last section of the ascent to surface should be covered in no less than a minute EEN IVET I 1 Amin Oz min um 5 k 4 Eu Sm ur muss i a zZ CRESS TR 7777777150 EE DECOMPRESSION WARNING ALARM Every time the time available within decompression shown on the display by the NO DECO icon decreases to 3 minutes Newton warns the diver by emitting a sound alarm In this situation the no decompression limits are being reached and a decompression dive is required DEEP STOP In order to avoid the risks related to the micro bubbles formed during the ascent Newton is able to suggest a DEEP STOP of one or two minutes in case of decompression div
31. currently set CHRO Indicates that the chronograph can be accessed through this menu ENTR DIVE Indicates that the dive computer can be accessed through this menu SET TIME Indicates that the time second time zone alarm time date and 12 24 hour display mode can be adjusted through this menu SET LOCK Indicates that the lock function of the dive computer can be accessed through this menu CHRONOGRAPH To access the chronograph press the UP or DOWN buttons until the CHRO indication appears at the top right of the screen Press the MODE button The CHRO indication will disappear To activate the chronograph press the UP button Access the split times by pressing the DOWN button the upper left part of the screen will display the indication L1 2 20 while the time of the chronograph will display the relevant split time for three seconds before showing the count again It is possible to store up to 20 split times Stop the count by pressing the UP button the stop indication will be displayed at the top left of the screen Split times can be accessed by pressing the DOWN button To reset the function press and hold the UP button SHUTDOWN OF THE DEVICE In order to reduce the consumption of the battery when the device is not in use Newton can be switched off by pressing the LIGHT button for 5 seconds The shutdown will cause the loss of the TIME and DATE and will be possible only after the no fly time LIGHT Button This button
32. diver descends back to the proper depth or below it The computer allows a maximum time of 2 minutes to correct this dangerous situation clearly marked by a continuous acoustic alarm After 2 minutes without the diver descending to the proper depth Newton enters in the ERROR PROGRAM making the STOP icon flash It will not be possible to use the device for the subsequent 48 hours The only function working will be the clock and it will be possible to access the Logbook and History Later in the PRE DIVE screen the STOP icon will start flashing together with the word DECO and the stop icon with the arrow up flashing This means that the decompression stage was omitted during the last dive The LOG BOOK will store the same warning indicating that on a specific date the dive with a specific number was carried out without the decompression stage DANGER under these conditions you won t be able to dive for the next 48 hours In the case that you feel any symptoms of decompression sickness you should contact the DAN Divers Alert Network and your local hyperbaric chamber centre providing as much data as possible about the dive In the opposite case i e when you descent other metre under the depth stage the arrow indicating back will BEEP BEEP DIVE T 12 tan BEEP BEEP i a MAX DIVE T N Ly eis 1 Emin mm BEEP BEEP ioa I m min DEEP STOP in DEPTH u 8 m min NAXDEPTH m D
33. e Nitrox dive and dives with two different hyper oxygenated mixtures selected if previously set in any moment of the dive MODE SAIR In this mode you can dive using only air with partial oxygen pressure set in a standard value of 1 4 bar Once you choose this mode by accessing the next menu DIVE SET DIVE S you will be able to modify only the Deep Stop Safety Factor SF and Altitude Alt settings MODE S NITROX Inthe NITROX mode you can dive using one or two hyper oxygenated mixtures MIX1 and MIX2 Once this mode is selected you can access the next menu DIVE SET DIVE S to modify MIX1 for the first mixture or bottom mixture and then MIX2 for the secondary mixture or decompression respectively Mix1 is the main mixture the one we can use for all type of dives or simply for the descent deep end and partial ascent phase and it can be set with values between 21 and 50 with O2 variations of 1 Mix2 is the secondary mixture or decompression mixture the one we can use in the ascent phase where the stop is carried out and it can be set with values between 21 and 99 with O2 variations of 1 To dive with one Nitrox mixture it is enough to set only the parameters of Mix1 and use such mixture during the whole dive To dive with two mixtures you have to set the parameters for both mixtures Mix1 and Mix2 taking into account as said before that Mix1 is the bottom mixture and Mix2 is the decompression mixture During dive when the depth al
34. ery second GAGE function measuring field 0 120 m Precision 1 T 20 C Reading resolution 10 cm from 0 to 100 m 1m form 100 to 120 m 1 ft from 0 to 316 ft Dive time from 0 to 255 min Data acquisition interval 20 sec THERMOMETER Resolution 1 C 1 F Measuring field 5 C 40 C Precision 2 C 10 min change T WATCH Precision 50 sec month average 24 hour display BATTERY CR 2430 3V battery REMARK it is important to remember that different factors may affect battery life such as time of storage before acquiring the device dive time use of backlight quality of battery whose average life varies depending for example on temperature WARRANTY LIMITED WARRANTY FOR CRESSI UNDERWATER COMPUTERS AND RELATED ACCESSORIES Important notice this warranty does not limit the statutory rights granted to consumers by applicable National Laws concerning the sales of consumer products Cressi issues this limited warranty to the purchaser of a Cressi underwater computer and relevant accessories for the Cressi underwater computer product During the warranty period Cressi or a Cressi authorised service centre according to their exclusive judgement will solve any defect in terms of material design and workmanship free of charge by means repairing or replacing the product according to this limited warranty This limited warranty is valid and effective exclusively in t
35. es at variable depth depending on the dive profile During the dive if the profile requires it DEEP STOP is displayed and an acoustic signal is issued The stop icon with the depth and the time minutes is displayed In case the dive omits the Deep Stop the warnings will be deleted and the computer recalculates the ascent planning without that stop REMARK Verify that the deep stop is enabled see paragraph DIVE SET REMARK In this case the maximum depth can be displayed by pressing the UP or DOWN button DIVING OUTSIDE THE NO DECOMPRESSION LIMITS DANGER do not use this device to dive beyond the no decompression limits Cressi discourages the use of this device for decompression dives However if during the dive due to negligence or emergency you have exceeded the no decompression limits Newton will provide specific information related to a correct ascent and to the decompression information Upon violating the limits the computer will issue an audible alarm and the screen on the display will change to look as indicated in the following picture providing the diver with the following information 1 Stop icon with the text DEC at the bottom of the display indicates that the diver has gone outside the safety curve and must make decompression stops The arrow pointing upward will flash to indicate the need for ascent 2 Depth of first decompression stage the deepest indicated in metres m or feet ft This can vary from a maximum of 2
36. ess the UP button until the display shows the SET TIME mode then press the Mode button The time digits will begin to flash By pressing the UP or DOWN button the indicators of the minutes second time zone alarm year month day and the setting for the 12 24 hour display mode will flash Scroll up to the relevant item and press the Mode button again The display will show only the highlighted item flashing Change it by pressing the UP or DOWN button Confirm the choice by pressing and holding the Mode button for a few seconds until hearing a beep to confirm the exit from the menu By continuing to press and hold the MODE button the user returns to the main menu after another beep Alternatively the computer will modify the settings automatically with a beep and then the user is taken back to the main screen NOTE Always check that the date and time are set correctly so as to have useful entries in the computer s logbook Setting the alarm To set the alarm type from the Set Time menu having reached the alarm time continue pressing the Up button until the letters AL flash At this point press the MODE button The alarm mode currently set will appear Press the UP or DOWN button to change modes The alarm modes are the following Daily To make the alarm sound on a daily basis Once To make the alarm sound only once Off The alarm is off SET LOCK MENU LOCKING THE DIVE COMPUTER Scroll through the menus with the UP or DOWN button Once
37. evice Once the desired setting is reached values between 21 and 99 with variations of 1 of O2 confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu Keep pressing and holding the Mode button to return to the main menu after another acoustic signal Alternatively the computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen INDE REMARK The percentage of oxygen FO2 set in the Mix2 is between 21 and 99 __ BEEP REMARK The Newton computer is factory set on the MODE S AIR dive program air with PO2 1 4 To be p gt N able to access the Nitrox parameters you need to set the MODE S menu in position NITROX Mix1 and Mix2 g Ir contain FO2 at21 and the PO2 at 1 4 factory set by default o ee Dan a er REMARK If the computer is set in NITROX MODE S and the default values of MIX1 and MIX2 are modified OE an SOR a such values remain set and active until it is changed to MODE S AIR In this case these values will restart from the default values REMARK By varying the FO2 the computer indicates the maximum depth which may be reached with that mixture depending on the PO2 value set It is possible to change the setting of the Nitrox mixture also during the surface interval with desaturation in progress but only after 2 minutes from the start of the interval This is a very imp
38. ge and timer Apart from the S AIR MODE and S NITROX MODE the computer is provided with a third program called GAGE depth gauge and timer that may be used for both apnea divers and for the use in technical dives In this case the device just provides the dive basic parameters i e depth and dive time It does not make tissue saturation and desaturation computation which must be programmed and calculated by means of proper software and or tables For such ends Cressi reminds that all sport dives must be conducted within the no decompression limits and at a maximum depth of 40 m limit of sport dives Exceeding these limits dramatically increases the possibility of decompression sickness IMPORTANT The Newton computer is designed for sport diving only and not for commercial or professional use which require longer dive times and greater depths consequently increasing the risk of decompression sickness DANGER Cressi discourages diving with gaseous mixtures other than air without proper training The use of technical multi gas mixtures may expose the diver to different risks than those of recreational diving including serious physical damages and in extreme cases death IMPORTANT after a dive in GAGE mode the device will not make saturation and desaturation calculations for the next 48 hours DANGER Should you decide to reset the device by accessing the system mode the nitrogen memory will be cancelled Therefore the device will
39. h the UP or DOWN button until the SFO indicator stops flashing Press the Mode button and change the element with the UP or DOWN buttons Confirm the value set by keeping the Mode button pressed for a few seconds until hearing an acoustic signal to confirm exit from the menu Keep pressing and holding the Mode button to return to the main menu after another acoustic signal Alternatively the computer will modify the automatic setting by issuing an acoustic signal to return then to the main screen IMPORTANT Enable and set a higher factor SF2 SF3 whenever you are aware of conditions which may increase the risk of decompression sickness In this way the non decompression times will be shorter as well as the dive which will also be more conservative ensuring greater safety AUTOMATIC RETURN OR WITH LONG MODE BUTTON i Q z amy cressi com EE DEEP STOP There are different diving teaching methods and decompression theories Each of those has been developed according to important scientific concepts lab tests and practical tests Some of those during specific dives support and require DEEP STOP while others do not contemplate this type of decompression profile Newton is factory set with DEEP STOP active If you want to disable it just press the UP button until you reach the DIVE SET menu press the Mode button to enter in the mode Scroll with the UP or DOWN button until the DEEP STOP indicator stops flashing Press the Mode button
40. he MODE SET MODE S menu is set in AIR or NITROX mode you can modify the parameters by accessing the next menu DIVE SET DIVE S IMPORTANT If the screen displays the battery icon with a single segment on the computer MUST NOT be used The battery can be replaced by the user as we shall see in the corresponding chapter IMPORTANT Once changing from NITROX SET MODE to AIR SET MODE the parameters of both Mix1 and Mix2 return to the values 21 FO2 and 1 4 bar PO2 PARTIAL OXYGEN PRESSURE PO2 Newton is factory set with a Partial Oxygen Pressure PO2 value of 1 4 bar both for the air dives and Nitrox dives with one or two mixtures Mix1 and Mix2 in order to ensure the maximum safety during any type of dive However the PO2 can only be modified ifthe computer is setin NITROX SET MODE in values between 1 2 bar included and 1 6 bar included with variations of 0 1 bar In case you need to increase the safety margin of the dive it will be possible to set PO2 to lower values up to a minimum of 1 2 bar Mix1 Partial Oxygen Pressure PO2 setting Press the UP button to move up to dive set mode DIVE S Enter in this mode by pressing the Mode button and the partial oxygen pressure PO2 indication and the Mix1 indicator will flash Now press the Mode button again The display will show just the highlighted item flashing together with the corresponding maximum operating depth Set the desired values between 1 2 and 1 6 bar with variations of 0
41. he country where the product was purchased provided that Cressi has provided for the sale of the product in such country However in case the product is purchased in any of the member states of the European Union in Iceland Norway Switzerland and Turkey and if Cressi has originally foreseen the sale of the product in one of these countries this limited warranty is valid and effective in all such countries Limitations to the service provided by this warranty could be caused by the presence in the products of specific items for a country For countries not belonging to the European Union other than Iceland Norway Switzerland and Turkey provided that the purchaser agrees to pay a service fee and a refund for shipping expenses borne by Cressi or by a Cressi authorised centre the service foreseen by the warranty can be obtained in countries other than those where the product was purchased In that case any spare part will be provided free of charge Warranty period The warranty period starts on the date of retail purchase by the first end user purchaser The product can consist of several components which may be covered by a different warranty period in particular this limited warranty is valid for a period of A two years for underwater computers B one year for consumables and accessories including but not limited to watchbands buckles etc either included in the underwater computer package or sold separately Within the limi
42. ing risks that if the diver does not perfectly know the mixture these risk can include serious physical damages and in extreme cases death IMPORTANT Before diving make sure that the computer is not locked during a DIVE WITH NITROX check for the presence of the word lock on the upper left part of the screen In this case unlock it placing the SET LOCK menuin the OFF position The word lock will disappear IMPORTANT Before diving set the computer to PRE DIVE by pressing the MODE button without releasing it or by accessing the ENTR DIVE menu In this way the computer will start processing the dive parameters within a maximum of 2 seconds after reaching a depth of 1 2 m In any case the dive computer is automatically activated within 20 seconds of reaching a depth of 1 2 m With the GAGE function the following information will be shown on the display off the dive computer 1 current depth value in metres m or in feet ft The depth gauge operative range reaches a depth of 120 m 2 dive time shown by the DIVE T icon given by the timer in minutes and seconds 3 maximum depth reached during the dive given in metres m or in feet ft indicated by the MAX icon 4 ascent rate indicator arrows 5 GAGE computing program icon 6 current temperature expressed in C or F IMPORTANT The device will not carry out any saturation and desaturation calculation during the remaining 48 hours elapsing from the end of the
43. ing the dive and until Newton does not change the setting again You have to set the exact values of oxygen percentage FO2 contained in the cylinders to be used during the dive after having meticulously analysed its content so the computer is able to adapt its computing algorithm to the new parameters GAS SWITCHING DURING DIVE During the ascent if the computer is set in the NITROX DIVE MODE the MIX1 icon will flash as soon as it reaches the maximum operating depth Mod of the second mixture MIX2 to warn that form that position of lower height it will be possible to perform the gas switching At this point to perform this operation you have to keep the Mode button pressed In this way the word Mix1 will keep on flashing and in the position of the dive data appear the pressure PO2 parameters set and the oxygen percentage FO2 parameters of Mix1 By pressing the UP button the word Mix2 will appear with the parameters if the second mixture By keeping the Mode button pressed the second mixture Mix2 setting is confirmed In case the gas switching is not performed to stop the flashing of the Mix1 icon simply press the Mode button During dive the procedure to visualise the data of the mixture set Mix1 and Mix2 is similar to the one used for gas switching i e keeping the Mode button pressed the word Mix1 will flash and the pressure PO2 and percentage of oxygen FO2 of Mix1 parameters set will be displayed By pressing then the UP button the word
44. ions provided by Cressi e g CRESS M those indicated in the instruction manual of the product d defects caused by other events not depending on Cressi 2 user manuals or software by third parties even if included in the package or sold together with Cressi hardware settings contents or data either provided with the product or obtained by means of downloading provided together with installation assembly shipping or other stage of the supply chain or otherwise purchased by the buyer 3 defects or alleged defects caused by the use or connection of the product with any accessory software and or service not produced or provided by Cressi or by using the product differently from the intended use 4 replaceable batteries INDE This limited warranty is void in the following cases 1 if the Product has been opened changed or repaired by personnel not belonging to Cressi or a Cressi service centre 2 if the Product has been repaired using non authorised spare parts 3 if the Product has been exposed to chemical substances such as including but not limited to insect repellents Cressi does not guarantee uninterrupted or error free operation of the Product or that the Product will operate in combination with other hardware or software provided by third parties Limitation of Cressi liability THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE REMEDY AVAILABLE FOR THE PURCHASER AND REPLACES ANY OTHER WARRANTY EITHER EXPLICI
45. issues after the dive s performed changing the decompression times and making them shorter than those indicated for a first dive REMARK The PLAN function is disabled in the GAGE function depth gauge timer and if the computer shows error LOG BOOK FUNCTION DIVE LOG Newton by Cressi stores data about the last 60 dives Data is recorded every 20 seconds in the LOG BOOK To display the previous dives press and hold the UP button until the word LOG appears The latest dive will be displayed in chronological order To display the data related to the previous dives press the Mode button so that the dive number flashes Then press the UP or DOWN button to move forward or backward to the desired one The LOG BOOK presents two screens for each dive with single mixtures and three screens for the dives performed with two mixtures To display the second screen of dive once reached the dive number desired press the Mode button In case the dive is performed with two mixtures GAS SWITCHING once the second screen is displayer to see the third one you will need to press the UP button In both cases the data remains displayed for 20 seconds after that the computer will automatically return to the main menu Keep pressing the UP or DOWN button and you will see in the three screens with the dive data The LOG BOOK function therefore enables to display by means of two or three screens of a complete series of data related to the dives performed starting
46. k representation of the previously set parameters To access the sub menu except history and pc link press and hold the Mode button In this way by pressing the UP button you move forward and by pressing the DOWN button you go back to the menu scrolling through the data contained in it To exit simply keep the Mode button pressed or wait until the Newton computer goes back to the first screen of the automatic menu The return to the watch function occurs automatically or by holding down the Mode button for a few seconds until hearing a confirmation beep Allthe operations available for each mode of the display will be explained in this manual Tun AN MAXDEPTH_ m wu MM LIGHT e prij nar MAXDEPTH_ m i zum ii aun ann ri gt gt gt ohana a Of us 7a oD amm amum Emm lt E E um a E amum 1 nmr mm omy E r E E zur ms amm JENE A mr um dem amem amum mem CRESS TR 77777777150 BEFORE DIVING SET MODE Setting of dive mode As noted once switched to the dive computer mode the display is in the PRE DIVE mode This displays the settings for the dive The parameters can be changed by repeatedly pressing the UP to scroll the menu or DOWN to go back to the menu button until the screen shows the MODE SET MODE S and setting the AIR or NITROX mode according to the type of dive you want to perform Newton allows in fact all types of dives Air div
47. lows it you will be able to change the mixture in the mode described in the dive with nitrox gas switching paragraph The other accessible settings in DIVE S once entered in NITROX mode are Mix1 and eventually Mix2 Partial Oxygen Pressure PO2 setting Mix1 and eventually Mix2 Percentage or Fraction of Oxygen FO2 setting Dive safety factor SF Altitude Alt Deep Stop DANGER Cressi discourages diving with gaseous mixtures other than air without proper training The use of technical multi gas mixtures may expose the diver to different risks than those of recreational diving including serious physical damages and in extreme cases death IMPORTANT If the screen displays the battery icon with a single segment on the computer MUST NOT be used The battery can be replaced by the user as we shall see in the corresponding chapter To set the MODE S NITROX mode press the Mode button after selecting the MODE SET MODE S menu Then by pressing either the UP or DOWN button the flashing word Air at the top right will be replaced by the word Nit NITROX Then confirm the value set by holding down the Mode button to return to the main menu after a beep If the Mode button is not pressed as described the computer will modify settings automatically issue a beep and return to the main screen INDE AUTOMATIC RETURN OR WITH LONG MODE BUTTON INDE CRESS M DIVE SET MODE Diving parameters setting Once t
48. move the lid and check the battery and its housing Should you note traces of corrosion due to water entry have the device checked by an authorised Cressi centre If everything appears in good condition remove the battery from its housing by holding the computer face down Replace the battery respecting the polarity an incorrect polarity may damage the device Before closing the cover check that there is no soiling on its seat and apply a thin layer of silicone grease to battery cover seal REMARK it is important to remember that different factors may affect battery life such as time of storage before acquiring the device dive time use of backlight quality of battery whose average life varies depending for example on temperature REMARK Do not over tighten the battery cover Over tightening the cover does not create a better seal much on the contrary it can result in cover cracking or difficulty removing the cover afterwards REMARK Make sure that the device is watertight IMPORTANT any malfunction or water filtration due to incorrect battery replacement will void the warranty BEEP BEEP i Q z CRESS W EE TECHNICAL SPECIFICATIONS Algorithm CRESSI RGBM algorithm Sample tissues 9 with saturation half times between 2 5 and 480 minutes Sizes and Weight Diameter 48 mm Height 15 mm Weight 135g Depth sensor Sea water setting fresh water depths are about 3 lower Measuring field 0 120 m measured ev
49. ortant feature especially for divers who perform a series of subsequent dives which allows them to change the mixture after having dived without having to wait for complete desaturation IMPORTANT Once the percentage of oxygen FO2 is set it remains active and memorised in the computer until itis modified again or until the MODE S menu is set in AIR DANGER With the NITROX MODE S Newton always keep the last percentage of oxygen set It is very important for the diver s safety to always check this parameter before each dive DANGER If you perform a repetitive dive after a Nitrox dive it is fundamental for one s safety to check the type of mixture contained in the cylinder and to set the FO2 of the computer according to that mixture r ha DANGER Do not dive with cylinders containing nitrox mixtures whose percentages of oxygen have ivi iii Ai Ji u amii E pe opii not been personally checked a Pe h ad BEEP si A on ht up Guy eno 55 DEEP stop O2 _ MAXDEPTH_ m aun amn aun aun aun auna DIVE SAFETY FACTOR SF The safety factor is an additional parameter whose purpose is to make dives safer based on the existence of personal risk factors which increase the risk of decompression sickness The diver can set it on three values SFO SF1 SF2 The factory setting is SFO i e disabled To change the Safety Factor SF press the UP button up to the DIVE S mode Enter in the menu by pressing the Mode button Scroll wit
50. ory Operating system Windows Mac Video resolution 800x600 or higher recommended To connect both computers follow the following procedure Install the Cressi Logbook software in your PC Connect the interface s Cressi hardware to a USB port of the PC Access the PC LINK Newton function by pressing the UP or DOWN button Then following the instructions it is easy to download all the data contained inside Newton as the profiles of the dives performed to see them later reproduces printed or modified by means of the software Io al an N AUTOMATIC RETURN OR WITH LONG MODE BUTTON MAXDEPTH_m a m CRESS M x SYSTEM RESET DEVICE RESET i Q zZ With the reset function all the calculations related to desaturation eventually in course are set to zero Dive logbook profile and historic memory remain stored in the memory even after the device s reset This function may be especially useful in case of device s renting by Diving Centres DANGER Do not reset your device if it has to be used to compute subsequent dives The procedure to perform this operation is already explained in the chapter Before diving CARE AND MAINTENANCE Newton by Cressi has been designed and made to operate in extreme conditions with extensive underwater use You should remember that it is a precision device deserving appropriate care Please avoid any violent shock protect it from extreme heat sources always wash it in fresh
51. r and 1 6 bar Newton considers the 1 6 bar value as the Partial Pressure maximum allowable limit and according to the mixture used automatically signals the maximum depth which may be reached Remember that even by using air you may reach the oxygen toxicity level This limit varies according to the PO2 set Newton is manufactured with a pre set value of 1 4 bar whose corresponding maximum depth is 56 6 m Of course you can set the computer on other PO2 values up to a maximum of 1 6 bar as long as you are in the NITROX DIVE S To warn the diver about the excess of PO2 the computer has an alarm When reaching the limit depth related to the PO2 set from 1 2 bar to 1 6 bar a sound alarm will go off while the PO2 icon will be flashing indicating the current depth As soon as you return to a depth shallower than the limit one the sound alarm will stop the current depth and the PO2 icon will stop flashing The latter remains lit up during the residual part of the dive in the LOG BOOK and in the PRE DIVE screen pail 37 MAXDEPTH__m den den aun 4 PRE DIVE LOG BOOK i a zZ CRESS M EE DIVING WITH TWO MIXTURES GAS SWITCHING BEFORE A GAS SWITCHING DIVE The Newton computer always keeps the AIR DIVE MODE program by default switched on until the diver sets it for the use with two mixtures in NITROX DIVE MODE chapter DIVE SET MODE Dive parameters setting In this case the display will show the word O2 which will stay on dur
52. r travel to higher altitudes than the current altitude must be avoided 3 Max depth reached in the latest dive 4 Duration of the latest dive 5 Eventual alarms issued during dive ascent rate partial pressure of oxygen 6 Indication of the altitude if applicable 7 DECO icon if decompression has been performed 8 NX indication and O2 toxicity bar if the latest dive has used Nitrox IMPORTANT Following the indications of the major organisation which study diving and hyperbaric medicine Newton applies the no flight times as follows 12 hours after a single dive with no decompression limits 24 hours after a dive with decompression or after repetitive or multiday of correctly performed 48 hours after the use of the gage function or if severe mistakes in dive management occurred REMARK Should a dive begin with less than 2 minutes of surface interval time Newton will consider it a continuation of the previous dive the number of dives remain the same and the calculation of the duration restarts from where they had stopped Dives carried out after at least 2 minutes of surface are considered as a new dive In the case the dive is performed with the GAGE function the device will not perform any saturation or desaturation calculation during the 48 hours elapsing from the end of the dive performed represented by the surface interval SURF T PLAN FUNCTION DIVE PLAN The PLAN function takes into account the residual nitrogen in the t
53. the case of dives performed in NITROX SET MODE and it will indicate the following data The second mixture MX2 with the corresponding FO2 q Dive s starting time q Water temperature Safety Factor set SF 0 1 2 HISTORY FUNCTION DIVE HISTORY The computer is equipped with a dive history memory of the dives performed To access this function press the UP or DOWN button until the icon HISTORY appears This program will display the following information related to q Total duration of the dives performed expressed in hours DIVE T h q1 Maximum depth reached during dives q1 Total number of dives performed DIVE TOTAL The function is able to store up to 999 dives after which the counter resets and starts all over again DIVE PROFILE FUNCTION DIVE PROFILE The detailed profile of the dives can be viewed by means of the software of the interface A Notebook or Desktop is required The screen will automatically show any information related to the depth time and to the data related to the most recent dive stored in the Logbook therefore allowing the scanning of the dive s profile in detail The data interval is 20 sec The screen will also display all icons related to the alarms which have possibly engaged during the dive such as PO2 PO2 alarm SLOW maximum ascent rate alarm and so on PC LINK FUNCTION PC COMPATIBLE INTERFACE Newton by Cressi can be connected to a Personal Computer with the following characteristics st
54. ts allowed by applicable National Laws the warranty period will not be extended renewed or changed in any way following a later resale product repair or product replacement authorised by Cressi However the parts of the product repaired or replaced during the warranty period or the replaced product are warranted for the remaining original warranty period or for three months from the repair or replacement date depending on which period is longer How to get warranty services If you want to submit a claim according to this limited warranty contact your Cressi authorised dealer for information about claim submission information will be provided about how to request the application of the warranty to your product If you want to return the product by shipping it to your authorised Cressi dealer make sure that shipping is prepaid The validity of the claims submitted according to this limited warranty is subject to notification to Cressi or to a Cressi authorised service centre of the alleged defect within a reasonable time after such defect is found however this should not be beyond the expiry of the warranty period For any claim based on this limited warranty you should also submit your name and address the purchase receipt which shall clearly indicate name and address of seller date and place of purchase and type of product The request of repair under warranty shall be satisfied free of charge by Cressi or by a Cressi authorised service
55. u will dive in and safe way REMARK in case of air travel the device must be stored in the pressurised cabin REMARK Cressi reminds that all sport dives must be conducted within the no decompression limits and at a maximum depth of 40 m limit of sport dives Exceeding these limits dramatically increases the possibility of decompression sickness As a result of technological advancements Cressi reserves the right to modify the device without prior notification Introduction The computer watch Newton by Cressi is a recreational advanced tool It will provide all the necessary information as regards depth dive times possible need of decompression ascent rate and all the surface intervals between dives Nitrogen absorption and release is continuously processed by its sophisticated software taking into account the quantity of inert gas contained in the different mixtures that can be used This information is shown on the device s display thanks to the PCD Priority Compartment Digit Display system that allows an easy and direct dialogue between the diver and the computer ensuring a clear understanding of all the data needed at any given time and a perfect readability in any situation The computer is provided with clock chronograph and calendar and a versatile dive memory logbook The mathematical model of Newton can make saturation and desaturation calculations of dives carried out both with air and with nitrox in any moment of the dive
56. while diving often check the quantity of air in the cylinder using the manometer DANGER DO NOT DIVE AT HIGH ALTITUDES BEFORE SETTING THE CORRECT ALTITUDE LEVEL ONCE SET PLEASE CHECK THE ALTITUDE LEVEL ON THE DISPLAY REMEMBER THAT DIVING AT ALTITUDES HIGHER THAN 3000 M ABOVE SEALEVEL INVOLVES A REMARKABLE INCREASED RISK OF DECOMPRESSION SICKNESS DANGER BEFORE AN AIR TRAVEL PLEASE WAIT UNTIL THE NO FLY TIME ICON ON YOUR COMPUTER DISPLAY HAS DISAPPEARED IMPORTANT The use of this device is strictly personal the information it supplies refers in fact exclusively to the individual who has used it during a dive or a series of dives DANGER CRESSI DOES NOT RECOMMEND THE USE OF THIS DEVICE FOR DECOMPRESSION DIVES IF FOR ANY REASON THE NO DECOMPRESSION LIMITS HAVE BEEN EXCEEDED THE NEWTON COMPUTER WILL DISPLAY ALL THE INFORMATION RELATED TO DECOMPRESSION ASCENT AND SURFACE INTERVAL TIMES IMPORTANT do not dive using Nitrox mixtures without having personally checked the contents and the correct percentage of O2 Fo2 After doing so set your computer with this value related to the mixture so that it may process the decompression computations Remember that the computer does not accept Fo2 decimal figures IMPORTANT Before diving check device parameter settings DANGER Newton always keeps the latest oxygen setting It is very important for diver s safety to always check this parameter before each dive DANGER CRESSI DIS
57. x Maximum depth which can be reached with the previously set parameters Dive safety factor SF 0 1 2 Altitude level if set GAGE function if set Battery charge level Current time By pressing the LIGHT button during PRE DIVE function the screen will light up By pressing then the UP button you can scroll down the main menu which displays in turn 9 sub menus of the screen 1 LOG 00 It is the logbook and the number next to LOG is the dive number 2 MODE S allows you to choose the most suitable mode according to the dive represented by the word Air for air dive or Nitrox for dives with hyper oxygenated mixture s 3 DIVE S The DIVE SET allows you to set the dive parameters whether it is air dive Nitrox dive or dive with two hyper oxygenated mixtures according to the previously set mode in the MODE S menu 4 PLAN Used for planning dives with manual scrolling of depth 5 GAGE With the GAGE setting Newton computer acts as a timer and depth gauge and does not calculate decompressions 6 PCLINK It allows the connection of Newton interface to a personal computer 7 HISTORY This mode displays dive history 8 SYSTEM In this menu you can set the unit of measurement of the computer and RESET it 9 PRE DIVE It is the main screen of the Newton computer as well as the initial and it is different from the others since it displays the time represented by the clock icon on the bottom at the screen It allows a quic
58. xposition should always be controlled When the oxygen level reaches warning values next to the maximum allowable toxicity corresponding to 4 segments out of 5 lit up the graph starts flashing and a temporary alarm starts sounding showing the proximity of a CNS toxicity level If the situation remains unchanged or if it worsens 100 of allowable toxicity the bar and the writing continue to flash and the temporary sound alarm is repeated until ascending the Partial Oxygen Pressure decreases below 0 6 atmospheres At this point the graph stops flashing yet the alarm is entered in the Logbook REMARK The result of the oxygen pressure computation is approximated to the nearest whole number DANGER do not use hyper oxygenated mixtures in diving or decompression without having attended the related training course The Nitrox Basic license enables to use just the standard hyper oxygenated mixtures Ean 32 and Ean 36 respectively called Nitrox 1 and Nitrox 2 within the non decompression limits MAX fii ii wey al PO2 ALARM The computer is able to constantly monitor another basic parameter related to Oxygen the O2 Partial Pressure value Po2 Oxygen toxicity may be caused both by an excessive exposure CNS toxicity seen in the previous chapter and by exceeding the maximum PO2 which is exceeding the maximum depth allowed by the mixture used As already seen the PO2 limit value is set by the diver in a range between 1 2 ba

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