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MANTIS User Manual

1. 20 41 Settings in the dive mode at surface 20 4 1 1 Surface interval counter 22 4 2 GAS SCTINGS uu u uuu u 4 22 4 221 Set Gas 1 2 ord 24 4 2 2 Enabling the CCR mode 25 472 3 NitroX reset ME sericis 25 424 Heart rate MiS uu uu a aun ninian 25 4 2 5 Desaturation reset 26 4 3 SCUBA settings 26 4 3 1 Maximum dive depth alarm 27 4 3 2 Maximum dive time alarm 27 4 3 3 Setting the Micro Bubble level 27 R e MOPS s u aa samasaa E 27 4 3 5 Selecting the salt sea or fresh water 28 4 4 Apnea Settings sicssicesscdissestnessnccestnsaienssdsndsneas conde 28 4 4 1 Setting the apnea session total depth 28 4 4 2 Setting the surface interval factor oo eee errr eee 29 4 4 3 Setting the dual depth alarm oo eerste eeeeeee 29 4 4 4 Setting the depth incremental alarm 30 4 4 5 Setting the dive time interval alarm 30 4 4 6 Setting the surface interval alarm 80 4 4 7 Setting the heart rate low limit 30 4 4 8 Setting the ascent speed alarm 31 4 5 SWIM MOJE u cesceossacaaasevteudecdeastesshensdennver deneseatnadadsocseree teatatendoc 31 4B AIQOMUIN Selecto ns u u ENET gs 32 4 Diving with MANTIS 33 4 7 1 Display information ccce a 33 4 7 1 1 Display configuration during the dive 34 4 7 1 2 Skin temperature 34 ATA SOP ME inais 34
2. MANTIS USER MANUAL 3 ii 4 7 1 4 Setting DOOKMAIKS u u uu aus aa sasa asss shaass 4 7 1 5 Safety stop timer 4 7 1 6 Activating the backlight 4 7 1 7 Diving with mb levels a 4 78 PDISLOPS asas sasaaasasnaaacqaauaqihiqisciayuanpisqus 4 7 2 No dive warning after a dive s AT SOS rrinin a 4 7 3 1 D Satunatiom PeSCtiicsiscsvisscsassssvecsstsancenceeacnorsetnevess ATA DIVING WithWMIMOX ckesfescts csccseshenssesasettactnssenvassasceceacessscunanoeesseass 4 8 Diving with two or more gas Mixtures 4 8 1 Switching gas mixture during the dive 4 8 2 Switching back to a gas mixture with lower oxygen concentration 39 4 8 3 Gas switch not carried out at the planned depth we 40 4 8 4 Delayed gas switch 40 4 8 5 Submerging below the mod after a gas switch a 40 4 8 6 Diving with CCR mode we 40 4 8 7 Enabling the CCR mode At 4 8 8 Atitude GIVING Qu u una u Moai niin as ane 41 4 8 8 1 Altitude and the decompression algorithm 42 4 8 8 2 Prohibited altitude u 43 4 8 8 3 Decompression dives in mountain lakes 43 48 9 Warmingsand alas sccssscescenedsevserscsedsscensisertdveonavseconereeunene 43 48 9 17 GNS Os 75 uu aen AERA 44 4 8 9 2 No Stop time 2 MINUTES 44 4 8 9 3 Entering GECOMPreSSION cee eee
3. MANTIS User Manual you want the best scubapro com SCUBAPRO MANTIS DIVING COMPUTER DESIGNED BY DIVING ENGINEERS Welcome to SCUBAPRO dive computers and thank you for purchasing MANTIS You are now the owner of an extraordinary partner for your dives This manual provides you easy access to SCUBAPRO state of the art technology and MANTIS key features and functions Should you wish to know more about SCUBAPRO diving equipment please visit our website www scubapro com A WARNING e MANTIS has a depth rating of 120m 394ft e If 120m is exceeded will be shown in the depth field and decompression algorithm does not calculate correctly e Diving at oxygen partial pressures higher than 1 6bar corresponding to a depth of 67m 220ft when breathing compressed air is extremely dangerous and could lead to serious injury or death e MANTIS is delivered at deep sleep mode where the display is off You must activate the MANTIS by press and hold the SEL button before the first dive MANTIS does not start the dive mode or may show a wrong depth value if activation is not done before the immersion C RINA Services SpA Via Corsica 12 16128 Genoa certifies that the MANTIS dive instrument is in compliance with the European Standard EN 13319 2000 for use in conjunction with Personal Protective Equipment EN13319 2000 Diving accessories Depth gauges and combined depth and time measuring devices Functional and safety requiremen
4. MANTIS ui MANTIS determines the depth by measuring pressure using water density as a constant 10m 33ft depth in salt water corresponds to approximately 10 3m 34ft in fresh water NCREMEN DEPTH TIME INTERVAL ALARM ce NOTE This setting will adjust the depth on all modes SCUBA GAUGE and APNEA By pressing the SEL button in this menu the salt water on off setting on the bottom row of the display starts blinking You may scroll between these two settings by pressing the UP or DOWN button and confirm your selection by pressing the SEL button SURFACE INTERVAL ALARM N UP ASCENT SPEED ALARM 4 4 Apnea settings rill 4 4 1 Setting the apnea session total depth SEt lt lt AP AE A 5 55 ion MANTIS FF in this menu M 28 MANTIS USER MANUAL To give a scale of total pressure changes quring an apnea dive session MANTIS includes a total depth counter When your qepth total has been reached MANTIS notifies you at the surface with an audible tone and a blinking no dive symbol to let you know it s to end the session and take a break By pressing the SEL button in this menu the off depth selection starts blinking By pressing the UP or DOWN button this can be edited from 100 to 1000m in 20m increments 330 3300ft in 65ft increments and confirmed by pressing the SEL button 4 4 2 Setting the surface interval factor Cie nFF MANTIS m Apnea diving
5. dive log number 9 and used oxygen content 32 In this display a too fast ascent used MB level or desaturation reset can also be shown 18 MANTIS USER MANUAL amp NOTE If the dive has been done in GAUGE or APNEA modes or if exercises at the surface have been logged then the main page will show GA AP or SE instead of O on the bottom row By pressing SEL you will select the dive and get to the sub display which shows the following information in SCUBA mode Dive depth display below 18 0m dive time 88 minutes minimum temperature 21 C deco gas 60 In this display a SOS mode can be identified if the last dive was terminated without correct decompression stops ao 38 1 N 0 MANTIS LLL 3 2 4 2 Apnea log MANTIS organizes the APNEA dive training in a special way for easier data reading The repetitive APNEA dives are grouped in a specific section and the main page shows the first immersion date and time COD ig UC 1 30 1 AP MANTIS M By pressing the SEL button the APNEA dive session opens The dives are shown in repetitive order display below 1 dive with max depth 8 5m and time 58 seconds On the bottom row the APNEA dive number of that session is shown MANTIS MI By pressing the UP or DOWN buttons the dives in the current session can be scrolled 3 2 4 3 Surface exercise logs MANTIS has a swim mode The log appears as SE Surface Exercise
6. start manual gas switch Press and hold in APNEA and SWIM mode end the dive exercise UP Press alternative display data Press and hold when SWIM mode active manual start stop of the SWIM mode Press and hold in GAUGE mode reset average depth counter Press in SCUBA and GAUGE mode start stop timer Press and hold in SCUBA and GAUGE mode reset the timer if it is stopped Press and hold in APNEA mode manual start and end the dive DOWN 4 7 1 Display information In dive mode the display shows you are in SCUBA mode it shows the Gas 1 content 21 and the amount of other gas mixtures 2G or 3G if more than one is enabled The heart rate symbol will blink when HR signal is received MANTIS MH Upon immersion MANTIS will automatically start to monitor the dive regardless of what state it was in prior to the immersion Details on the information displayed can be found in the next sections Dive time the dive time is displayed in seconds in APNEA mode and in minutes in SCUBA and GAUGE modes If during the dive you ascend to the surface the time spent on the surface will only be counted to the dive time if you descend again below 0 8m 3ft within 5 minutes This allows for brief periods of orientation While on the surface the time will not show as progressing but it is running in the background As soon as you submerge the time will resume including the time spent on the
7. 33 01 10 2014 Read the chapter Warnings and alarms about the possible selections that you can modify on your MANTIS You may also change the shown units between metric imperial Select Extras gt Options gt measurement units 52 MANTIS USER MANUAL 2 0 0 SCUBAPRO LogTRAK Options download WIQITA Length Om ft Pressure bar psi Temperature c F Volume liter Cft Weight kg D tbs Backqround light dark 7 TAKING CARE OF MANTIS 7 1 Technical information Operating altitude with decompression sea level to approximately 4000m 13300ft without decompression gauge mode at any altitude Max operating depth 120m 394ft resolution is 0 1m until 99 9m and 1m at depth deeper than 100m Resolution in ft is always 1ft Accuracy is within 2 0 2m 1ft Decompression calculation range 0 8m to 120m 3ft to 394 ft Clock quartz clock time date dive time display up to 999 minutes Oxygen concentration adjustable between 21 and 100 Operating temperature 10C to 50C 14F to 122F Power supply CR2032 lithium battery Life of the battery Estimated 2 years or 300 dives whichever comes first Actual battery life depends on the number of dives per year the length of each dive the water temperature and the usage of the backlight 7 2 Maintenance The depth accuracy should be verified every two year and can be done by an authorized SCUBAPRO dealer Aside from that MANTI
8. DOWN O f DOWN I I UP UP I I SETGAS2 SET SP 2 I I DOWN I DOWN I UP i UP aaa a SET GAS d i SET bail a I I I DOWN _ UP te Ses sae ELEREN EE IF SET ON a DOWN ei DOWN Pulse limits DOWN UP S MANTIS USER MANUAL 23 i 4 2 1 Set Gas 1 2 or d You may use your MANTIS with all Nitrox mixes from Air to pure oxygen By pressing the SEL button in this display the oxygen content of the Gas starts blinking By pressing the UP or DOWN buttons you may scroll the value from 21 up to 100 By pressing SEL the content is confirmed and the ppO starts blinking By pressing the UP or DOWN buttons you may select the value from 1 00 bar up to 1 60 bar It is possible to disable the MOD setting for Gas 1 depth displayed on the top row but this requires the security code 313 from the user By pressing the SEL button the user will accept the given value alt uno d MANTIS M Refer to the chapter Diving with two or more gas mixtures for more information on using Gas 2 and d Setting Gas d or Gas 2 are similar to Gas 1 Gas 2 can only be set if Gas d is enabled and set amp NOTE Diving with a ppO higher than 1 4 is dangerous and may lead to unconsciousness drowning and fatal injury ce NOTE ppO is fixed to 1 60 bar when selected oxygen content is 80 or higher Enabling the CCR mode will change the Gas 1 and Gas 2 settings to Setpoints and G
9. alarm from 5 to 100 meters 20 330 feet By pressing SEL the first value is confirmed and the second depth starts blinking Like the first by pressing the UP or DOWN buttons the second MANTIS USER MANUAL 29 N depth alarm may be set from 5 to 100 meters By pressing the SEL button the on off selection starts blinking By pressing the UP or DOWN button this can be edited and then confirmed by pressing the SEL button ce NOTE The first alarm is short in sequence to get your attention and then the second alarm is continuous By setting the first alarm deeper than the second it will be masked by the continuous alarm and you will not be able to hear the first one 4 4 4 Setting the depth incremental alarm Hilli DEPTH MANTIS taal By pressing the SEL button in this menu the alarm depth starts blinking By pressing the UP or DOWN buttons you may select the alarm value from 5 to 100 meters 20 330 feet By pressing the SEL button the incremental mode starts blinking By pressing the UP or DOWN the you may scroll between the direction of the alarm or disable it with selections off dn down up or both By pressing the SEL button the settings will be confirmed 4 4 5 Setting the dive time interval alarm un int nan U 3U UFF MANTIS MI By pressing the SEL button at this menu the time starts blinking and by pressing the UP or DOWN you can select the interval from 15 seconds up t
10. belt transmission signal and the dive computer shows and uses this information in SCUBAPRO s adaptive dive algorithm The temperature measured inside of the heart rate belt has a range of 18 36 C 64 97 F in 1 C resolution The SCUBAPRO heart rate belt can be used with wet or dry suits ce NOTE Heat vests with a heating element that overlays the SCUBAPRO heart rate belt or other active heating suits cannot be used with skin temperature heart rate belts 4 7 1 3 Stop timer There are many situations during a dive where a simple stop timer independent of dive time is practical for example timed tasks on dive courses or special missions etc MANTIS offers a stop timer in SCUBA mode The stop timer can be selected by pressing the UP button and it is shown on the bottom row of the display screen 34 MANTIS USER MAI L During a dive the stop timer starts at immersion So when displayed for the first time during the dive the stop timer and dive time are identical When displayed the stop timer can be stopped by pressing the DOWN button This creates a bookmark which can be seen in the log book using PC Mac interface software When displayed and stopped the stop timer can be reset to zero by a press and hold of the DOWN button 4 7 1 4 Setting bookmarks By a press and hold of the LIGHT button you can set any number of bookmarks as reminders of particular moments during the dive The bookma
11. eee 44 4 8 9 4 MB LEVEL INOOH s 032csesacecscecetnacs dievsentensc indineeaenees 44 4 8 9 S ASCONU TALC es s anran ESSE AAE 45 4 8 9 6 MOD ppO a 45 4 8 9 7 CNS O 100 a 46 4 8 9 8 Missed decompression stop 46 4 8 9 9 High Workload a 46 4 8 9 10 MB LEVEL reduced u u a enina 47 4 89 Low BAWON uuu uu gitar eontininiashadandieredeed 47 4 9 GAUGE MOJE saci ictr nea E EEEN DiE E chases reread 47 4 10 APNEA mode a 48 A SMM Ode yi u nu S E a E E E sasawa 49 5 MANTIS ASSESORIES llul U LL LIS 50 SA JAR Delt ua ax 50 5 2 Nylonarmstrap a 50 5 3 Battery compartment o ring wan Dl 5 4 Display guard waco 6 MANTIS PC INTERFACE we 51 61 Cradle accessory wD 6 2 Introduction to Scubapro LOGTRAK eeeeeeeeneceeeeerneeeeies 52 63 Change warnings settings of the mantis and reading the computer i TOrmmatl fi sssrinds iadair aad EEA EST 53 7 Taking care of mantis J l u u u uuu uuu uuu u u 53 7 1 Technical information sasa 72 Maintenance n ti ceaideactecestviwateassneaanedec ovate auctsabevadsdvanivisadeatevanetsestes 53 7 3 Replacing the battery in MANTIS oo cece eeeeeeneeteeesneetneeeees 53 TA Warranty a qua canned wa 54 8 GLOSSARY wee
12. for exercises done on the surface MANTIS USER MANUAL 19 pi The log book will present the start time and date on the main page By pressing the SEL button you can review see display below the distance 1238m exercise time 88 minutes 53 seconds and average heart rate 128 beats minute 4 MANTIS AS A DIVE COMPUTER MANTIS is a full featured diving computer capable of multigas Nitrox decompression calculations CCR mode ascent rate calculations and warnings The logbook can store up to 50 hours of dive profiles with a 4s sampling rate During the dive MANTIS displays information such as depth dive time decompression status water temperature and much more On the surface after a dive remaining desaturation time no fly time surface interval and prohibited altitude classes are shown in addition to the watch functions 4 1 Settings in the dive mode at surface When MANTIS is in surface mode you can access various menus dedicated to diving and customize various settings to your liking The dive computer functions of MANTIS on the surface include among others setting the oxygen concentration for Nitrox diving setting the MB level of the decompression algorithm setting various warnings and personal preferences To reach any of these functions MANTIS must be in Dive surface mode display This can be reached from the time of day display by pressing DOWN button twice Sc ubA 5 MANTIS M 20 MANTIS
13. from your authorized SCUBAPRO UWATEC dealer Remove the isolation sticker Open the battery latch with tweezers Remove the empty battery and recycle it in environmentally friendly way Insert the new battery with side on top Close the battery latch Attach the isolation sticker Screw the battery cap back in place Check the MANTIS functions and housing sealing A WARNING We recommend having the MANTIS battery replaced by an Authorized SCUBAPRO dealer The change must be made with particular care in order to prevent water from seeping in The warranty does not cover damages due to an improper placement of the battery or incorrect closing of the battery cap MANTIS stores the tissue saturation information in a non volatile memory so the battery can be replaced at any time between dives without loss of information amp NOTE After a dive while on the surface MANTIS stores tissue desaturation data once every hour until desaturation is complete If a battery is changed while MANTIS has remaining desaturation time the tissue data will not be lost but MANTIS will reference the last stored data set As a consequence the data displayed on the surface screen after the battery change desaturation time surface interval no fly time and CNS O may be different from the values displayed just prior to battery removal After replacing the battery you must set the date and time The O ring must be replaced each
14. larger diameter guiding at the hole The disassembly and assembly of the arm strap requires a special tool We recommend the arm strap change be done by authorized SCUBAPRO dealer 50 MANTIS USER MAI L Splinting 5 3 Battery compartment o ring Each time the MANTIS battery compartment is opened a new SCUBAPRO O ring must be used MANTIS battery compartment O rings are available from your authorized SCUBAPRO UWATEC dealer 5 4 Display guard You can protect your MANTIS glass face with a SCUBAPRO display guard This foil can be easily replaced if damaged 6 MANTIS PC INTERFACE 6 1 Cradle accessory Communication between MANTIS and a PC Mac is possible only with a cradle A cradle can be bought from your Authorized SCUBAPRO dealer The communication between the MANTIS and the cradle is established via contacts to the case Therefore if the water contact or the spring contact on the cradle have surface dirt this should be cleaned with a piece of cloth before use To avoid scratching your MANTIS first place the contacts together and then click your MANTIS into the cradle 6 2 Introduction to Scubapro LogTRAK LogTRAK is the software that allows MANTIS to communicate with a Windows based PC or Mac OS MANTIS USER MANUAL 51 In order to take advantage of any of these features you need to establish a communication between your PC and MANTIS with a cradle To start the communication 1
15. of 120m 394ft Air nitrox dives with high ppO are extremely dangerous and can lead to fatal injury Be aware that exposures to high pp0 will lead the CNS clock value to exceed the maximum recommended 100 ce NOTE If MOD is shallower than 9m 30feet planning is not allowed and information LO MOD is shown By pressing SEL for planned depth the dive time starts blinking The start point minimum now is the no decompression time By pressing UP or DOWN buttons you may change the time in 1 minute increments Decompression time and total ascent time are shown on the middle row By pressing the SEL button the planner will exit and you will get back to the main menu 3 2 4 Reading the logbook HN F LOU MANTIS mI You can check the main information about your dives from the Logbook of the MANTIS The first page shown is the dive history HN DEPTH Jee 62 43h MANTIS MI On the display above the MANTIS has 38 dives and a total of 43 hours of diving stored in the Logbook with the deepest dive at 32 2 meters and the longest dive time of 63 minutes MANTIS USER MANUAL 17 p SCUBAPRO DOWN SEL DIVE EXERCISE 1 SEL 3 2 4 1 Scuba log By pressing the UP button you get to latest dive exercise session and by pressing UP or DOWN buttons you can scroll the logs in memory In SCUBA mode there is a main page showing date display below shows 28th August 2013 immersion time 10 27 38
16. on the left top row and the prohibited altitude is shown on the right In the top example above the diver is presently at altitude class O and should not reach altitudes above 3000m class 3 within given interval of 3 hours and 0 minutes By increasing the interval time on the middle row the allowed altitude increases due to the desaturation caused by the time spent at the current altitude class as shown on the lower example ce NOTE when the no repetitive dive symbolis on the planner on the middle row initially shows the time period when diving would be allowed again For planning the altitude excursion the interval time can be reduced which causes the prohibited altitude level to decrease MANTIS has an altitude warning if you were to reach an altitude that according to MANTIS is incompatible with your current residual nitrogen levels it will warn you with an altitude warning 4 8 8 3 Decompression dives in mountain lakes In order to assure optimal decompression even at higher altitudes the 3m 1Oft decompression stage is divided into a 2m 7ft stage and a 4m 13ft stage in altitude ranges 1 2 and 3 If atmospheric pressure is below 610mbar altitude higher than 4000m 13300ft no decompression calculation is carried out by MANTIS automatic GAUGE mode In addition the dive planner is not available in this altitude class 4 8 9 Warnings and alarms MANTIS can alert you of potentially dangerous situations
17. prescribed decompression stop MANTIS will switch into SOS mode Once in SOS mode MANTIS will lock up and will be inoperable as a dive computer for 24 hours If it is used for diving within the 24hours of an SOS lock it will automatically switch to gauge mode and provide no decompression information A WARNING Violating a mandatory decompression obligation may result in serious injury or fatal issue Serious injury or fatal issue may result if a diver does not seek immediate treatment should any signs or symptoms of decompression sickness occur after a dive Do not dive to treat symptoms of decompression sickness Do not dive when the computer is in SOS mode The display shows the same information as when in the presence of desaturation but on the bottom row SOS is displayed 4 7 3 1 MANTIS allows you to reset the desaturation of the computer If tissue saturation information from a recent dive is reset to zero the computer will treat the next dive as a non repetitive dive This is useful when the computer is loaned to another diver who has not dived in the last 48 hours Chapter Desaturation reset describes how to make the desaturation reset Desaturation reset ce NOTE After a desaturation reset the change between the modes GAUGE APNEA and SCUBA is possible immediately However since the GAUGE and APNEA modes are not tracking your tissue nitrogen loading it is recommended to keep the initial intervals betwe
18. starts off gassing Partial pressure of oxygen This is the pressure of the oxygen in the breathing mix It is a function of depth and oxygen concentration A ppO higher than 1 6bar is considered dangerous The maximum allowed value for ppO Together with the oxygen concentration it defines the MOD The act of pressing and releasing one of the buttons The act of pressing and holding one of the buttons for 1 second before releasing it Surface interval Elapsed time since your last dive has ended The result of having completed a dive without respecting all mandatory decompression obligations A stopwatch To time certain steps of the dive Universal Time Coordinated refers to time zone changes when traveling MANTIS USER MANUAL 55 ih 9 INDEX Active backlight 8 11 33 35 All silent mode 10 Altimeter 7 14 Ascent rate 45 Backlight 8 11 33 35 Battery 5 11 47 54 Bookmarks 33 35 Buttons 7 33 CCR 25 40 41 24 Clock settings 8 CNS O 37 44 46 55 Date 8 10 Desaturation 46 Desaturation reset 26 37 Dive planner 15 Diving at altitude 41 Flying after diving 42 Gauge mode 47 Logbook 17 5 52 Maintenance 53 MB levels 35 55 Microbubbles 35 55 MOD 24 45 55 Mountain lakes 43 No dive warning 36 Nitrox 25 37 55 Nitrox reset 25 No fly time 22 42 55 Oxygen conce
19. surface If you spend more than 5 minutes at depths shallower than 0 8m 3ft the dive will be considered ended and will be stored in the logbook Any subsequent immersion will cause the dive time to start again from zero Maximum displayed time is 999 minutes For dives longer than that the dive time starts again from 0 minutes Depth the depth is given in 10cm resolution when in metric mode When the depth is displayed in feet the resolution is always 1 foot At a depth shallower than 0 8m Sft the display shows Maximum operating depth is 120m 394ft No stop time calculated in real time and updated every 4 seconds Maximum displayed no stop time is 99 minutes MANTIS USER MANUAL 33 ai A WARNING During all dives perform a safety stop between 3 and 5 meters 10 and 15 feet for 3 to 5 minutes even if no decompression stop is required Temperature MANTIS displays the water temperature during the dive and the air temperature when on the surface However skin temperature influences the measurement when worn on the wrist Decompression information when MANTIS calculates the need for a mandatory decompression stop it shows you how long and how deep your deepest stop is It also gives you the total ascent time Stops deeper than 27m 90ft and total ascent times longer than 99 minutes are shown as 4 7 1 1 Display configuration during the dive Throughout the dive MANTIS displays the most importan
20. the bottom row until the end of the dive 4 8 9 11 Low battery A WARNING Do not start a dive if the battery symbol is blinking The computer may fail to function during the dive and this could lead to serious injury or fatal issue Q cr NO STOP MANTIS mI During the dive MANTIS alerts you of precarious battery situations in two ways By displaying a steady battery symbol on the screen This means you can finish the dive but you should replace the battery once you return to the surface By displaying a blinking battery symbol on the screen This means you need to start the procedure to terminate the dive as there is not enough energy in the battery to ensure proper continued functioning and the computer may fail If the battery symbol is blinking the backlight cannot be activated and the audible warnings and alarms are not available anymore 4 9 GAUGE mode When MANTIS is set to GAUGE mode it will only monitor depth time and temperature and will not carry out any decompression calculations You can only switch to GAUGE mode if the computer is completely desaturated Audible and visual warnings and alarms except depth and dive time cannot be activated ce NOTE The low battery alarm is also active in GAUGE mode A WARNING Dives in gauge mode are performed at your own risk After a dive in gauge mode you must wait at least 48 hours before diving using a decompression computer MANTIS will show nei
21. the standard ZH L8 ADT here referred to as LO Choosing an MB level between L1 and L5 makes the algorithm more conservative therefore you will have either shorter no stop times or deeper and longer decompression stops than when diving at LO Consequently the body will either take up less nitrogen shorter no stop dives or will be able to off gas more before returning to the surface Both work towards reducing the amount of microbubbles present in the body at the end of the dive Please refer to the chapter Setting the Micro Bubble level for information on setting the MB level MANTIS USER MANUAL 35 p r a o Q 4 7 1 8 PDI stops MANTIS is equipped with the innovative Profile Dependent Intermediate Stops which is available on other SCUBAPRO dive computers The PDI Stop optimizes the leading compartment off gassing with a low gradient at depth which is calculated from the current profile After the dive profile has reached a level where a PDI Stop is recommended the MANTIS shows the PDIS symbol and depth on the bottom row If no decompression is required when ascending to a PDI stop depth the PDIS symbol and depth start blinking on the bottom row for 2 minutes and the PDIS timer counts down on the middle row Once the PDIS depth has been reached you should stay in the zone that is 0 5m 3 0m 2ft 10ft from the shown PDIS depth If you descend below this zone the PDIS counter is deactivated an
22. time the MANTIS is opened The battery case must be completely closed 7 4 Warranty MANTIS has a two year warranty covering defects in workmanship and functioning The warranty only covers dive computers which have been bought from an authorized SCUBAPRO dealer Repairs or replacements during the warranty period do not extend the warranty period itself Excluded from warranty coverage are faults or defects due to excessive wear and tear exterior influences e g transport damage damage due to bumping and hitting influences of weather or other natural phenomena servicing repairs or the opening of the dive computer by anybody not authorized to do so by the manufacturer pressure tests which do not take place in water diving accidents improper placement of the battery cap For European Union markets the warranty of this product is governed by European legislation in force in each EU member state All warranty claims must be returned with dated proof of purchase to an Authorized SCUBAPRO Dealer Visit www scubapro com for the dealer nearest you 54 MANTIS USER MAI L 8 GLOSSARY AVG CCR CNS O DESAT Dive time Gas Local time Max depth MB MB level MOD Multi gas Nitrox NO FLY No stop time Oz O PDIS ppO ppO max Press Press and hold INT SOS mode Stopwatch UTC Average depth calculated from the beginning of the dive o
23. 55 4 MANTIS USER MANUAL 1 INTRODUCTION TO MANTIS Your MANTIS User Manual is divided into the following main chapters 1 Introduction to MANTIS This chapter provides an overview of the MANTIS computer and describes its operating modes and functions when on the surface 2 MANTIS as a watch This chapter describes MANTIS when it is used as a watch 3 MANTIS as a dive computer This chapter describes all settings and functions of MANTIS as a dive computer and takes you underwater with MANTIS It s about everything MANTIS can and wil do to enhance your safety and fun underwater 4 MANTIS accessories This chapter briefly describes the extras that can be purchased as additional options to get the most of your dive computer in all diving conditions 5 MANTIS PC interface This chapter is about linking MANTIS to your PC MAC It describes how to change settings plus how to download and manage your logbook 6 Taking care of MANTIS This chapter describes how you should take care of MANTIS after underwater adventures and also summarizes the main technical information of this instrument MANTIS is a__ technologically advanced instrument that can accompany you during your underwater adventures while providing you with accurate depth time and decompression information On the surface its size makes it your ideal everyday companion With features such as wake up alarm stop watch barometer altimeter and swim mode MAN
24. 5bar and decreases when the oxygen partial pressure is lower than 0 5bar Hence while on the surface breathing air you will always be decreasing the CNS O clock During the dive the depth at which 0 5bar is reached for various mixes is as follows e Air 13m 43ft 32 6m 20ft 36 4m 13ft ce NOTE For oxygen concentrations of 80 and higher the ppO max is fixed at 1 6bar and cannot be changed c NOTE Repetitive very long exposures technical and rebreather diving with high ppO may cause long term Pulmonary Toxicity effects that can be tracked with OTUs SCUBAPRO recommends model Galileo TMx for completing such dives 4 8 Diving with two or more gas mixtures MANTIS is equipped with the ZH L8 ADT MB PMG algorithm PMG stands for Predictive Multi Gas meaning that when you program more than one gas mixture MANTIS will predict the switch to the higher oxygen concentration gas at the depth that you specified and alert you at all times with a decompression schedule comprehensive of all gas mixtures that you programmed In other words you get full credit at any point during the dive for all the extra gas mixtures that you are carrying with you At the same time MANTIS can also show you what the decompression schedule would be if you were to finish the dive using only the gas mixture that you are currently breathing from so that you can be prepared in the event that something did not work as planned A WARNI
25. Connect the cradle to your PC 2 Launch LogTRAK on your PC 3 Select the serial port where the cradle is connected Extras gt Options gt download ano SCUBAPRO LogTRAK Options Clee measurement units Select Serial Port Rescan plugged device _ New Dives only All Dives cs Select the COM port that is used for MANTIS cradle 4 Place the MANTIS on the cradle Download dive profiles From LogTRAK by selecting Dive gt Download Dives you can transfer the MANTIS Logbook to your PC or Mac There are three main views each showing a specific part of your dive logs Profile shows the graphical data of the dive Details about the dive where you can edit for example the equipment and tank information Location shows your dive site on the world map The selection tabs for views are on the left side of the main window jana ma 6 3 Change warnings settings of the mantis and reading the computer information By selecting Extras gt Read Dive Computer settings you can enable disable warnings that cannot be enabled or disabled by using the menus on the MANTIS unit aa Die computer senings SMT essen info FNS O2 reaches 79 FA Entering tevel Stops nanawan Lo M un Level ignored MB Lovet reduced MB No Stop time imen LO No Stop t me 2min V Entering deco with MB Level L1 LS M Entering deco wah MB Level LO use PC Time 5400235541 13 45
26. EA diving mode The main features include faster a sampling rate than in normal SCUBA mode and alarm functions tailored to APNEA diving MANTIS measures the depth in APNEA mode every 0 25 seconds to ensure the precise maximum depth In the logbook the data is saved in 1 second intervals The increased amount of data being saved requires more storage space therefore you can store approximately 10 hours of log data in APNEA mode In APNEA mode it is also possible to start and stop the dive manually by a press and hold of the DOWN button This way you can use MANTIS for static APNEA dives where normal dive start depth of 0 8 meters will not start a new dive ce NOTE An APNEA dive is stored in the logbook only when there is at least one immersion in the session with a logged depth greater than 0 8m 48 MANTIS USER MANUAL As with gauge mode MANTIS doesn t carry out any decompression calculation You can only switch to APNEA mode if the computer is completely desaturated The alternate info is shown on the bottom row and can be selected by pressing UP in the following order Heart rate Temperature Skin temperature if SCUBAPRO belt is used Sequential dive number done at this APNEA session amp NOTE The ascent descent speed is shown as a pop up when 0 1m sec is exceeded in the alternate info field The dive depth is shown on the top row with dive time om the middle row which is shown in minutes and seconds a
27. G All rebreathers require unit specific education before using them Get the proper certifications and follow manufacturer recommendations and procedures when diving with a rebreather unit Deviations may lead to severe injury or death 4 8 7 Enabling the CCR mode When the CCR mode is activated the normally changeable open circuit gases Gast Gas2 are converted to ppO setpoints SP1 SP2 The dive start setpoint SP1 has a selectable range from 0 3 up to 0 95 bar ppO The bottom setpoint SP2 has a range from 1 0 up to 1 4 bar ppO and this is switched normally active on the way to the bottom or when the bottom depth is reached The SP switch depth is suggested by the dive computer the same way the gas switches are suggested in open circuit mode predictive gas switching The switch points are determined from the equivalent oxygen contents in open circuit mode So the SP1 is suggested to be changed on the way down when the equivalent content of the gas at that depth reaches the 21 O level For example with a SP1 of 0 5 bar the depth would be approximately 13 8m in salt water Deco mix Bottom mix Diving with 2 gas mixtures _ SP1 t Switch depth between SP1 SP2 Depth SP2 SP2 Diving with CCR 4 8 8 Altitude diving Altitude classes altitude warning and no fly time after a dive Going to altitude is in a way similar to starting an ascent from a dive yo
28. NG Diving with multiple gas mixtures represents a much higher risk than diving with a single gas mixture and mistakes by the diver may lead to serious injury or death During dives with multiple gas mixtures always make sure you are breathing from the tank that you intend to breathe from Breathing from a high oxygen concentration mix at the wrong depth can kill you Mark all your regulators and tanks so that you 38 MANTIS USER MAI L cannot confuse them under any circumstance Before each dive and after changing a tank ensure that each gas mixture is set to the correct value for the corresponding tank Get a proper training and certifications to make multi gas dives prior of making them by yourself MANTIS enables you to use up to three gas mixtures during the dive air and Nitrox only The three mixtures are labeled 1 2 and d and must be in ascending order of the oxygen fraction Setting the gas mixture and the depth for changing the gas mixture O fraction Range of O fraction The O concentration of gases can only be set in ascending order as show in the picture above O concentration setting shown means that gas is disabled MANTIS requires the MODs of gasses to be at least 3m 10ft apart Setting the ppO max value to OFF applies to Gas 1 only Gas 2 and d are always limited to a maximum value of ppO max of 1 6bar For oxygen concentrations of 80 and higher the ppOzmax is fixed at 1 6
29. Please read section Altitude and the decompression algorithm for more details The current altitude and altitude class can be read on the altitude meter menu Reading the Altitude Barometer and Temperature values Altitude Class c4 G3 c2 c1 co The altitude classes are approximate elevations because the effect of weather conditions can make the switch point pressure occur at different levels A WARNING At altitude class 4 MANTIS functions in gauge mode only automatic switch from computer mode ce NOTE You can check your current altitude class and elevation by activating the altitude meter Refer to chapter Reading the Altitude Barometer and Temperature values on how to do so ce NOTE The no fly no dive and altitude restriction symbols are also shown on the time of the day display when applicable A WARNING Flying while MANTIS displays the NO FLY symbol can result in serious injury or fatal issue 4 8 8 1 Altitude and the decompression algorithm Atmospheric pressure is a function of altitude and weather conditions This is an important aspect to consider for diving because the surrounding atmospheric pressure has an influence on on gassing and off gassing of nitrogen in your body MANTIS divides the possible altitude range into 5 classes that are illustrated in the picture below Elevation Barometric Dive computer switch point mod 4000 m 610 mbar GAUGE 13120 ft 8 85 psi no deco data 3000 m 725 m
30. S is virtually maintenance free All you need to do is rinse it carefully with fresh water after each dive and change the battery when needed To avoid possible problems with your MANTIS the following recommendations will help assure years of trouble free service avoid dropping or jarring your MANTIS do not expose MANTIS to intense direct sunlight do not store MANTIS in a sealed container always ensure free ventilation If there are problems with the water contact use soapy water to clean MANTIS and dry it thoroughly Do not use silicone grease on the water contacts Do not clean MANTIS with liquids containing solvents Check the battery capacity before each dive If the battery warning appears replace the battery lf any error message appears on the display take MANTIS back to an authorized SCUBAPRO dealer 7 3 Replacing the battery in MANTIS The main battery change must be made with particular care in order to prevent water from seeping in The warranty does not cover damages due to an improper placement of the battery MANTIS USER MANUAL 53 m A WARNING Aleaking battery cap may lead to the destruction of MANTIS by water seeping in or cause MANTIS to switch off without prior notice Always open the battery compartment in a dry and clean environment Dry MANTIS with a soft towel Unscrew the battery cap with a tool Replace the main O ring replacement O rings are available
31. TIS can tackle almost every possible task The buttons allow you to initiate operating functions make setting changes and access menus while on the surface During the dive they set bookmarks show further information on the computer screen and activate the backlight It is time to dive into the details now We hope you will enjoy getting to know your new computer and we wish you many happy dives with MANTIS 1 1 Battery MANTIS uses a CR2032 battery which is available at your Authorized SCUBAPRO dealer MANTIS will alert you when the battery is approaching a critical discharge level by displaying the battery symbol A steady symbol means that the battery is low with some reserve left At this point the backlight cannot be activated If the symbol blinks the battery level is dangerously low and the backlight and alarm tones cannot be activated diving is not recommended before replacing the battery MANTIS M MANTIS USER MANUAL 5 lll A WARNING Starting a dive when the battery symbol is blinking can cause the computer to fail during the dive Replace the battery before any diving activity if the blinking battery symbol appears When the do not dive symbol appears along with the battery symbol MANTIS cannot be used for diving before a fresh battery is installed Please refer to the chapter on Checking the battery status for details how to manually trigger the battery level check A WARNING Replacing the b
32. USER MANUAL TIME amp DATE UP i DOWN UP When you have not been diving with your MANTIS for a while no desaturation time left the dive mode may appear as shown below Sc ub A 5 MANTIS m However in SCUBA mode after a dive the display may appear as shown below STOP watch function Watch Set ESC pages ESC pages SEL i Dive settings ESC SEL Clock settings ESC Remaining desaturation time on the middle row no repetitive dive time and allowed altitude classes on the top row willl k DESAT U 4 IU be ee From here by pressing the SEL button and scrolling with the UP or DOWN buttons you gain access to a loop of menus which are all related to diving MANTIS USER MANUAL 21 i SEL INTERVAL J UP DOWN P DOWN SET APNEA DOWN UP SET Stroke Counter DOWN UP SET ALGO 4 1 1 Surface interval counter After a dive the MANTIS shows the surface interval from the latest dive The surface interval counter counts until desaturation is complete After the desaturation is complete this menu disappears LiL inc ir m7 Us lI ee The remaining CNS is shown on the bottom row and the no fly time is shown in hours until this restriction is completed on the top row 4 2 Gas settings Set u 5 22 MANTIS USER MANUAL SET GAS I I I I I I I I SET GAS 1 SET SP 1 i
33. UU ScubA MANTIS M The GAUGE and APNEA modes are not tracking the tissue saturation and there is a locking interval before a change to SCUBA mode is possible In GAUGE mode the locking interval is 48h after the last dive in GAUGE mode In APNEA mode there is 12h locking interval with shallower than 5m 16ft and 24h locking interval with deeper than 5m 16ft dives in APNEA mode MANTIS shown below went for a dive in GAUGE mode and the operation mode cannot be changed for another 13 hours URUUE MI The change to GAUGE or to APNEA mode is possible after the desaturation time from the last SCUBA dive has elapsed If you decide to change modes before the 48h interval or full desaturation you have to go to the desaturation reset menu and perform a manual desaturation reset By pressing the SEL button in this menu the mode starts blinking By pressing the UP or DOWN buttons you may select between SCUBA GAUGE or APNEA modes By pressing the SEL button the selection will be confirmed 32 MANTIS USER MANUAL 4 7 Diving with MANTIS The functions of the buttons during diving are summarized in the table below Note that MANTIS can be set to three dive modes SCUBA APNEA and GAUGE Due to the operational differences between modes the buttons will have different functions depending on which mode you are using LIGHT Press backlight Press and hold bookmark SEL ESC Press accept gas switch Press and hold
34. as d to bailout Refer to the chapter Diving with CCR mode to learn more about diving with CCR mode DEPTH 6 058 SP MANTIS MH So when the CCR has been enabled by pressing the SEL button in this display the oxygen content of the Diluent tank starts blinking By pressing UP or DOWN buttons you may scroll the value from 21 up to 40 By pressing SEL the tank content is confirmed and the Setpoint 1 SP1 ppO starts blinking By pressing UP or DOWN buttons you may select the value from 0 3 bar up to 0 95 bar By pressing the SEL button the given values are confirmed DEPTH ee ICU gP e NN WU MANTIS LLL 24 MANTIS USER MANUAL Setpoint 2 is dedicated to Oxygen tank and the setting procedure is as with Setpoint 1 Bailout is an open circuit gas and it is set as the Gas 1 4 2 2 Enabling the CCR mode Refer to chapter 5 8 6 to learn more about diving with CCR mode n rr LL N un MANTIS mM By pressing the SEL button in this display the CCR mode on or off starts blinking and can be selected by pressing the UP or DOWN buttons By pressing the SEL button you will confirm the setting 4 2 3 Nitrox reset time GA U e 0 MANTIS MH If you are generally diving with air and want to return to this setting after the occasional nitrox dive you can preset a default time when your MANTIS will reset back to air By pressing the SEL button the time shown on the bottom row
35. ast enough to minimize the effect of continued loading on your tissues The pressure reduction that the body can tolerate without significant microbubble formation is higher at depth than it is in shallow water The key factor is not the pressure drop itself but rather the ratio of the pressure drop relative to the ambient pressure This means that the ideal ascent rate at depth is higher than it is in shallow water DEPTH ASC SPEED m ft m min ft min 0 0 7 23 6 20 8 26 12 40 9 29 18 60 10 33 23 75 11 36 27 88 13 43 31 101 15 49 35 115 Iy 56 39 128 18 59 44 144 19 62 50 164 20 66 If the ascent rate is greater than 110 of the ideal value the SLOW symbol appears MANTIS USER MANUAL 45 m For ascent rates higher than 140 the SLOW symbol starts blinking IDU DIVE TIME MANTIS mI MANTIS also provides an audible alarm in case ascent rates exceed 110 the intensity of the alarm increases in direct proportion to the degree that the ideal ascent rate is exceeded In case of a fast ascent MANTIS may require a decompression stop even within the no stop phase because of the danger of microbubble formation From great depth a slow ascent may cause heightened saturation of tissues and an extension of both decompression duration and total ascent time At shallow depth a slow ascent may shorten the decompression duration Excessive ascent rates for longer pe
36. attery requires opening the electronic compartment of MANTIS You must take extreme care when performing the battery change operation in order to ensure the water tightness of the watch Failing to do so will cause the watch to flood during your next dive and permanently ruin it Damage to MANTIS due to an improper battery replacement is not covered by warranty We strongly recommend having the battery change operation be carried out by your SCUBAPRO dive retailer See chapter Replacing the battery in MANTIS in this manual for information on how to replace the battery 2 OPERATION MODES The reference point for any description of MANTIS as a watch is the main time of day display This is the display in which the current time is shown on the middle row The upper row shows the day of the week and the date The example below shows Thursday 20th of March and the time is 34 minutes and 9 seconds past 11 o clock MANTIS MII The different menu modes are written at the display like for example Watch set Each mode may have sub functions and menus You can scroll between menus by pressing UP or DOWN buttons Note that although Menu is written on the display you still have not activated the mode By pressing the SEL button you activate the mode and get into the sub menus The modes are grouped and described in this manual in three chapters 1 MANTIS as a watch 2 Menus and functions at the surface 3 MANTIS as a div
37. bar SCUBA 9840 ft 10 51 psi 2000 m 815 mbar SCUBA 6560 ft 11 82 psi 1000 905 mbar CTR 3280 ft 13 13 psi SCUBA Om SCUBA Oft ce NOTE MANTIS deals with altitude automatically it monitors the atmospheric pressure every 60 seconds and if it detects a sufficient drop in pressure it does the following it indicates the new altitude range and if applicable the prohibited altitude range it indicates the desaturation time which in this case is an adaptation time to the new ambient pressure If a dive is started during this adaptation time MANTIS considers it a repetitive dive since the body has residual nitrogen 42 MANTIS USER MANUAL ce NOTE A fast descent from mountains or a fast rise in airplane cabin pressure may activate the dive mode The MANTIS will automatically detect and end this dive after 12 hours or you may manually activate the check by press and hold both UP and DOWN buttons at the same time This kind of false dive will not be stored in the MANTIS logbook 4 8 8 2 Prohibited altitude Going to altitude as well as flying after diving exposes your body to a reduced ambient pressure Similar in a way to the no fly time MANTIS advises you which altitude classes are safe to reach after a dive and which aren t If you have to drive over a mountain pass to return home after a dive you can view this information in the planner menu HN A 9 MANTIS MI The current altitude class is shown
38. bar and cannot be changed The MOD for Gas 2 and d are the switch depths for those gases This is what MANTIS uses for its calculations warnings and suggested switch points When diving with more than one gas mixture the Nitrox reset time function described in the section on Nitrox reset time has the following effect Gas1 is set to 21 Gas 2 and d are set to OFF c NOTE Start breathing from the tank with the new gas mixture before confirming a switch Always make sure you are switching to the intended gas Failure to do so may result in serious injury or death 4 8 1 Switching gas mixture during the dive HiHi DEPTH DIVE TIME 99 48 un d 63 MANTIS Til During the ascent phase when you reach a depth corresponding to the MOD of Gas d MANTIS will suggest that you perform the switch An audible sequence goes off and the text Gas d starts flashing on the display together with the value of the MOD You have 30 seconds to respond to this message otherwise MANTIS will consider that Gas d will not be used and adapts the decompression schedule accordingly To confirm the gas switch press the SEL button After you confirm the switch the text Gas d remains on the screen for five seconds without flashing MANTIS USER MANUAL 39 4 8 2 Switching back to a gas mixture with lower oxygen concentration There may be situations in which you have to switch back to Gas 1 or Gas 2 from Gas d This can happ
39. d MANTIS calculates a new PDIS depth If decompression is already required this information remains on the middle row Time In such a case the PDIS counter is not shown only the PDIS symbol and depth are blinking on the bottom row for the 2 minutes that are recommended for staying in the PDIS zone A WARNING Even when performing a PDI stop you still MUST perform a safety stop at 5m 15ft for 3 to 5 minutes Performing a 3 to 5 minute stop at 5m 15ft at the end of any dive is still the best thing you can do for your safety 4 7 2 No dive warning after a dive If MANTIS detects a situation of increased risk due to the potential microbubble accumulation from previous dives or a CNS O level above 40 the NO DIVE symbol will appear on the display to advise you against performing another dive right away The suggested time interval that you should wait prior to diving again is shown on the dive mode display LLL h OF MANTIS LLL 36 MANTIS USER MAI L You should not perform a dive as long as the no dive warning is displayed on the computer screen If the warning is prompted by microbubble accumulation as opposed to CNS O over 40 and you dive anyway you will have shorter no stop times or longer decompression times Moreover the duration of the microbubble warning at the end of the dive can increase considerably 4 7 3 Sos If you stay above a depth of 0 8m 3ft for more than 3 minutes without observing a
40. e computer The following chart describes the main menu structure TIME amp DATE DOWN function DOWN ad ALTI BARO meter l DOWN UP SEL sere S ESC pages el DOWN g Logbook T DOWN DIVE mode Ene E bzg E l DOWN UP SEL in ESC 3 MANTIS AS A WATCH ce NOTE Thermometer reading when MANTIS is more than just a watch It worn at the wrist against the skin the features reading is influenced by body heat e Wake up warning function The function of the buttons on the surface e Swim mode is summarized in the table below and e Stopwatch with lap time and 72 hours explained in detail in the following sections run time e Altimeter for tracking your excursions to the mountains e Thermometer and barometer for current weather conditions MANTIS USER MANUAL 7 y Light button Top Left Press backlight UP button Top Right UP adds numerical values scrolls up in the menus DOWN button Bottom Right DOWN subtracts numerical values scrolls down in the menus SEL ESC button Bottom Left Press select Press and hold escape return to previous menu or cancel the setting 3 1 Clock setting functions LT WACCh SEE MANTIS MI By pressing the DOWN button once WATCH SET SET alarm clock UTC DOWN UP SET Time DOWN from the main time and date display and UP selecting the SET menu by pressing the SEL button y
41. e you plan to make a second dive during the desaturation phase you must start the Planner by inputting the time you would still stay at the surface MANTIS HIHI By pressing the UP or DOWN buttons you can set the time in 15 minutes increments The prohibited altitude is shown on the top row By increasing the surface interval the allowed limit will reach maximum level 4 To learn more about altitude diving with MANTIS refer to the chapter Altitude diving In case MANTIS is displaying the no dive warning the duration of the warning itself is displayed as recommended surface interval for planning purposes rounded up to the nearest 15 minute increment When the surface interval is given or if you have no remaining desaturation left the planner will start blinking the depth By pressing UP or DOWN you can set the depth in 3m 1Ofeet increments Minimum depth for planning is 9m SOfeet The no decompression dive time for given depth is shown on the middle row 16 MANTIS USER MAI L The gas O content is shown on the bottom row until the 1 CNS for the planned depth is reached After that the planner shows the CNS on the bottom row The planner allows only depths according to maximum ppO The gas oxygen content and maximum ppO settings are given on the dive set menu described in chapter Set Gas 1 2 or d A WARNING if you have set the ppO max to OFF the planner will allow depths up to maximum
42. ecompression stop appears This alerts the diver to the fact that a direct ascent to the surface is no longer possible When the no stop time ends and a mandatory stop is required before reaching the surface MANTIS emits a sequence of audible beeps and the DECO STOP symbol blinks both for 12 seconds 4 8 9 4 MB LEVEL ignored LLL MANTIS mi When you have set MB level higher than LO and you reach a depth shallower than the deepest required MB level stop this warning will be activated MANTIS emits a sequence of audible beeps and the MB level stop symbol MB level depth and MB level time will blink for 12 seconds Alarms can not be turned off because they represent situations that do require 44 MANTIS USER MANUAL immediate action by the diver Alarms are described in the following chapters A WARNING When in GAUGE mode all warnings and all alarms are 0FF except for the low battery alarm When MANTIS is set to SOUND 0FF mode all audible alarms and warnings are switched off 4 8 9 5 Ascent rate As you ascend during a dive the pressure surrounding you diminishes If you ascend too quickly the resulting pressure reduction could lead to microbubble formation If you ascend too slowly the continued exposure to high ambient pressure means you will continue loading some or all of your tissues with nitrogen Consequently there is an ideal ascent rate that is slow enough to minimize microbubble formation yet f
43. en changes on modes A WARNING Diving after having reset the desaturation is extremely dangerous and is very likely to cause serious injury or a fatal issue Do not reset the desaturation unless you have a valid reason to do so amp NOTE Removing and replacing the battery will not reset the desaturation MANTIS stores tissue saturation information in a non volatile memory For the time that the computer is without a battery the desaturation calculation is frozen and resumes from where it left off as soon as a new battery is installed 4 7 4 Diving with nitrox Nitrox is the term used to describe breathing gases made of oxygen nitrogen mixes with the oxygen percentage higher than 21 air Because Nitrox contains less nitrogen than air there is less nitrogen loading on the diver s body at the same depth as compared to breathing air However the increase in oxygen concentration in Nitrox implies an increase in oxygen partial pressure in the breathing mix at the same depth At higher than atmospheric partial pressures oxygen MANTIS USER MANUAL 37 m can have toxic effects on the human body These can be lumped into two categories 1 Sudden effects due to oxygen partial pressure over 1 4bar These are not related to the length of the exposure to high oxygen partial pressure Sudden effects can vary and depend on the exact level of partial pressure they happen at It is commonly accepted that partial pressures up t
44. en for instance if you want to descend again below the MOD for Gas d or if for instance you have run out of Gas d during the decompression At this point you can manually initiate the gas switch by pressing and holding the SEL ESC button MANTIS will display the text Gas 1 and its MOD flashing At this point press UP to select Gas 2 or press the SEL button to confirm the switch MANTIS will display the text Gas 1 or Gas 2 for five seconds without flashing and adapt the decompression schedule accordingly 4 8 3 Gas switch not carried out at the planned depth If you fail to confirm the gas change within 30 seconds of when MANTIS suggests it the gas is excluded from the decompression calculation and the decompression schedule is adapted accordingly basically reflecting the fact that you will finish the dive without using the excluded gas amp NOTE If after MANTIS has changed the decompression schedule to reflect the missed gas switch you descend again below the MOD for Gas d MANTIS reintroduces Gas d into the calculations and the decompression schedule changes accordingly 4 8 4 Delayed gas switch MANTIS til You can catch up on a planned gas mixture switch at any time by selecting the gas manually Press and hold the SEL ESC button to start the gas switch procedure MANTIS will show the text Gas 2 or Gas d and its MOD flashing on the display This helps you verify that you are performing a switch to a safe ga
45. enu amp NOTE You can leave the stopwatch actively counting or you can leave the stopped time on the display The status will be stored in memory allowing you to continue from the same display at a future time amp NOTE Stopwatch has a 30 minute timeout before reverting to normal watch display However the timeout does not stop the stopwatch function You can return to the stopwatch menu and continue with the time taking task just as you did before the timeout happened 3 2 2 Reading the altitude barometer and temperature values Aiti bfro MANTIS LLL In the altitude menu the current altitude is calculated from the barometric pressure and is shown on the middle row The current temperature is shown on the bottom row The current altitude class is shown on the top row ce NOTE barometric pressure is a variable changing with weather and atmospheric pressure at that particular elevation The Dive algorithm uses Altitude Classes which are directly derived from the barometric pressure Altitude is counted from the current barometric pressure and it is therefore a relative value 14 MANTIS USER MANUAL HHH 3 23 Planning a dive I Atti CO une PLAnner Cant I MANTIS By press and hold the DOWN button the uH display changes and shows on the bottom row the barometric pressure at sea level Or press and hold the UP button and DOWN you get the barometric pressure in mbar at current altitude This Barom
46. eter feature UP allows you to foresee the approaching SEL weather in the upcoming hours if your altitude remains the same cr 4 SURFACE INTERVAL foe r mu f DOWN P rA DEPTH f L u no deco time A DOWN q U0 UP 966 The altitude can be adjusted when current elevation is known by pressing the SEL button The altitude value will start blinking By pressing UP or DOWN buttons the value can be adjusted in 10m 50feet increments Adjusting the altitude elevation has no effect on the Altitude Class ce NOTE Different combinations m amp C Ft amp C M amp F or Ft amp F can be selected from the Dive mode menu Units MANTIS USER MANUAL 15 iil You can plan your next dive based on your body s nitrogen saturation The planner is also using the following information Selected oxygen concentration Enabled gases multi gas diving Selected water type Selected microbubble level Water temperature of the most recent dive 6 Altitude range 7 Status of saturation at the time when the planner is started 8 Observance of the prescribed ascent rates Q O N ce NOTE When MANTIS is in GAUGE or APNEA modes the Planner is disabled and this is indicated by showing OFF in this menu PLAnnEr Ore MANTIS M By pressing the SEL button in the planner menu you will get into the Planner directly or an after repetitive dive to the surface interval setting In cas
47. fter 20 minutes in full minutes only 50 LU ohr On the middle row the surface interval counter counts to 15 minutes If no repetitive dive is done MANTIS reverts to the APNEA menu display When SIF is enabled the no dive symbol will be shown at the surface until this period has elapsed An audible signal is given after this When total session depth is enabled and the limit is reached the blinking no dive symbol is shown and an audible signal is given 4 11 SWIM mode It is sometimes practical to be able to measure a distance at the surface for example when searching the dive site If your MANTIS has the Surface Exercise mode enabled you can count your swimming stroke or kick cycles and measure the distance covered during the exercise Naturally when kick counting MANTIS must be fixed to your ankle MANTIS can be set to SWIM mode from any of the surface displays SCUBA GAUGE APNEA by a press and hold of the UP button ce NOTE The SWIM mode operates only on the surface It will switch automatically to active dive mode when immersed deeper than 3m 1 Oft MANTIS USER MANUAL 49 Ni u I OU 1 3C Wehr MANTIS LLD In SWIM mode and during surface exercise MANTIS displays the count of strokes or heart rate on the bottom row the elapsed time on the middle row and the converted total distance on the top row 5 MANTIS ASSESORIES 5 1 HR belt MANTIS receives the signal of various low fre
48. he table below for the status and functions Indicator in battery At other displays Battery status Function limitations status display 00000 Fresh battery none 0000_ Battery ok for diving none 000__ Battery ok for diving none 0 Battery symbol Weak battery change Backlight not to fresh operating 0 Blinking battery Completely used Alarms and symbol no dive battery change to Backlight not symbol fresh operating diving not recommended change battery Blinking battery Completely used bat Diving mode not symbol no dive tery change to fresh allowed only symbol watch may make a watch is active reset any time and Settings cannot be remain off changed OF MANTIS USER MANUAL 11 ie ce NOTE Battery capacity and voltage at 3 2 Menus and functions at the end of the lifetime may vary between the surface battery manufacturers Generally By simply pressing UP or DOWN operation at low temperatures decreases buttons from the time of day display you battery capacity Therefore when the can scroll through the various menus in battery indicator drops below 3 dots MANTIS The diagram below shows the change the battery to a fresh one before sequence of the menus Note that when making any new dives you first reach a menu you are not yet HN inside it you must press the SEL button to enter the actual menu 00 MANTIS HIHI A WARNING When battery is critically low the watch and dive sett
49. ings are disabled menu off WwAtCh OFF TIME amp DATE UP l DOWN UP STOP watch function DOWN UP ALTI BARO meter l DOWN UP SEL Planner l DOWN UP SEL Logbook DOWN UP DIVE mode lt ESC z DOWN UP SEL Clock settings Watch Set lt _ emsa ESC DOWN 3 2 1 Using the stopwatch HiHi Hill LountEr YUS eL OP UU UU UU MANTIS pia Wl Press UP button and the stopwatch A starts counting and shows actual state By pressing SEL button the stopwatch Which is run By pressing UP button will be activated In the first display the again the stop watch stops counting and stopwatch shows the status which can be cae shows actual state stop The counted time stop run or lap By activating the stopwatch will stay on the display first the time display will be as shown below MANTIS USER MANUAL 13 RI Stopwatch will reset the counted time when UP button is pressed and held The laps can be marked by pressing DOWN button when stopwatch is counting By doing so the display will freeze for 5 seconds and MANTIS shows the lap time Counting will continue automatically and the lap counter will show the number of laps at the bottom of the screen LAP U 3 45 LAP i When stopwatch is stopped you can review your lap times from the memory by pressing DOWN button tof O 048 00 LAP c By pressing SEL button you can exit the stopwatch and return to the Stopwatch m
50. nd gn MANTIS MII ON ATT ALR OFF By pressing the SEL button the current setting will start blinking at the bottom row By pressing UP or DOWN buttons you may select between the normal mode ON where alarm and button tones are on or the silent mode OFF where all tones are off or alarm mode where only alarm tones are on ALR or attention mode ATT where alarm and attention tones are on The sound off selection is protected with a code 3 1 7 Accept code protection When code protection is required the first digit starts blinking By pressing UP or DOWN buttons the number can be changed and by pressing the SEL button the number will be stored HIH LO 5 nnn UU Til The protection code is 313 10 MANTIS USER MANUAL Lode j A WARNING The Sound Off selection will disable all audible dive mode alarms and warnings This is potentially dangerous ce NOTE The only exception to the silent mode is the alarm clock which willl beep when activated even if the main setting is sound off 3 1 8 Checking the battery status DALEErY 00000 MANTIS tt The battery status menu shows how much energy is left in the CR2082 battery A fresh battery shows 5 dots MANTIS is periodically measuring the battery status and you can manually trigger ameasurement by pressing the SEL button in this menu The intelligent battery algorithm will limit some functions towards the end of the battery lifetime See t
51. ntration 37 Oxygen partial pressure 37 PC interface 51 ppO max 55 Safety stop timer 35 Log TRAK 52 SOS mode 37 55 Stopwatch 13 Surface interval 22 29 30 55 Technical information 53 Time of day 7 12 Time zone 55 Units 27 UTC 9 55 Warning clock 7 Wake up warning 7 Warnings 43 52 Water contact 51 53 Water type 28 56 MANTIS USER MANUAL
52. o 1 4bar are tolerable and several training agencies advocate maximum oxygen partial pressures up to 1 6 bar 2 Long exposure effects to oxygen partial pressures over 0 5bar due to repeated and or long dives These can affect the central nervous system and cause damage to lungs or to other vital organs Long exposures can be divided to more severe Central Nervous System effects and less dangerous long term Pulmonary Toxicity effects MANTIS treats high ppO and long exposure effects in the following ways 1 Against sudden effects MANTIS has an MOD alarm set for a user defined ppO max As you enter the oxygen concentration for the dive MANTIS shows you the corresponding MOD for the defined ppO max The default value of ppO max from the factory is 1 4bar This can be adjusted to your preference between 1 0 and 1 6bar It can also be turned OFF Please refer to the chapter on Gas settings for more information on how to change this setting 2 Against long exposure effects MANTIS tracks the exposure by means of the CNS O clock At levels of 100 and higher there is risk of long exposure effects and consequently MANTIS will activate an alarm when this level of CNS O is reached MANTIS can also warn you when the CNS O level reaches 75 see section CNS O 75 Note that the CNS O clock is independent of the value of ppO max set by the user The CNS O clock increases when the oxygen partial pressure is higher than O
53. o 10 minutes By pressing the SEL button the function starts blinking and you may enable or disable it by choosing on off by pressing the UP or DOWN buttons By pressing the SEL again the settings will be confirmed 4 4 6 Setting the surface interval alarm HIHN urf IAN ace UU UFF a i By pressing the SEL button in this menu the surface interval time starts blinking By pressing the UP or DOWN buttons you can select the interval from 15 seconds up to 10 minutes By pressing the SEL button the function starts blinking and you may enable or disable the alarm by selecting on off with the UP or DOWN buttons By pressing SEL again the settings will be confirmed 30 MANTIS USER MANUAL 4 4 7 Setting the heart rate low limit MANTIS I By pressing SEL in this menu the HR low value starts blinking By pressing the UP or DOWN buttons you may select the value from 25 to 100 bpm By pressing the SEL button the function starts blinking and by pressing UP or DOWN you may select between enabling or disabling the alarm with the on off setting By pressing SEL the selection will be confirmed 4 4 8 PEEd U J tae Setting the ascent speed alarm By pressing SEL in this menu the ascent speed starts blinking By pressing the UP or DOWN buttons you may select the value from 0 1 to 5 0 meters second 1 15 feet second By pressing SEL the value will be confirmed and the function starts blinking By p
54. ompression stop A WARNING Violating a mandatory decompression obligation may result in serious injury or fatal issue MANTIS ui If in the presence of a required decompression stop you ascend more than 0 5m 2ft above the required stop MANTIS will trigger an alarm the value of the current depth and the value of the required stop depth will blink and a sequence of beeps will be heard This will continue for as long as you stay 0 5m 2ft or more above the required stop 4 8 9 9 High workload LL MANTIS LLL If MANTIS detects a sufficient increase in workload no stop times may shorten and decompression stops can increase MANTIS warns you of this situation with an audible beeps and shows the heart symbol 46 MANTIS USER MANUAL ce NOTE MANTIS analyzes your heart rate pattern over time to determine workload and hence algorithm adaptation The heart rate shown on the display is not indicative of the workload itself Near a decompression stop MANTIS does not consider the effect of workload but instead utilizes the slowest possible perfusion for each compartment 4 8 9 10 MB LEVEL reduced When you have set a MB level higher than LO and you ascend more than 1 5m above the required MB level stop or after ignoring the MB level warning you stay at a shallower depth MANTIS will reduce your MB level to the next possible level The audible alarm will be active for 12 seconds and the new MB level will blink on
55. organizations give various recommendations about surface intervals between dives based on dive times or depths MANTIS integrates a surface interval counter which uses simple multiplication for determining the surface interval in seconds MANTIS uses following formula in this calculation Surface interval before the next dive pressure depth square root of dive time SIF As a reference a few values are listed in the following table Dive Dive Surface Interval depth time m ft seconds seconds seconds SIF 5 SIF 20 10 30 40 63 253 10 30 60 77 309 20 60 60 116 464 30 90 80 178 716 40 120 90 237 949 ce NOTE The actual depth and time are calculated during the ascent and descent this is not presented in the table above By pressing the SEL button in this menu the off value selection starts blinking By pressing the UP or DOWN button the SIF can be selected from 5 to 20 or disabled with the OFF setting which is then confirmed by pressing the SEL button After a dive if SIF is set MANTIS will indicate the surface interval with a static no dive symbol until the time has elapsed which is then followed by an audible tone 4 4 3 Setting the dual depth alarm DEPTH nm Aw an 30 0 n w MANTIS Wil By pressing the SEL button in this menu the first depth starts blinking By pressing the UP or DOWN buttons you may select the first depth
56. ossible In the event you decides to reset the desaturation the safety code 313 must be given This procedure secures unwanted DOWN resetting and the desaturation reset will be UP stored in memory In the next dive log the desaturation symbol will be shown MB Level By pressing the SEL button the selection DOWN on starts blinking By pressing the UP or DOWN buttons the desaturation can UP be deactivated and this state is indicated with the selection off When the off state is confirmed by pressing the SEL button the code page appears The first digit starts blinking and by pressing the UP or DOWN this can be edited By pressing the SEL button the number is confirmed and the next number starts blinking When the code is given correctly and is confirmed by pressing the SEL button then the desaturation reset is completed DOWN UP Salt Fresh 26 MANTIS USER MAI L 4 3 1 Maximum dive depth alarm HN J90 n ne By pressing the SEL button in this menu the depth value starts blinking By pressing the UP or DOWN buttons the value can be selected from 5 up to 100 meters 20 330 feet in 1m 5ft increments By pressing the SEL button the function starts blinking and you may select on or off by pressing the UP or DOWN buttons The selection is confirmed by pressing the SEL button 4 3 2 Maximum dive time alarm DIVE TIME n n MANTIS m By pressing the SEL button in this men
57. ou will get into the clock Seca settings See chart below DOWN UP SET date l DOWN UP SET Sound off DOWN UP CHECK battery state The different sub menu functions are described in later chapters 8 MANTIS USER MANUAL 3 1 1 Setting the alarm clock By pressing the SEL button the hours of the alarm will start blinking You can scroll the hours setting by pressing UP or DOWN buttons Pressing the SEL button will confirm the hour setting and start the minutes blinking You can scroll the minutes of the alarm setting by pressing UP or DOWN buttons Pressing the SEL button will confirm the minutes setting and start the alarm status blinking The alarm status setting can be selected to either On or Off by pressing UP or DOWN buttons Pressing the SEL button will confirm the alarm status setting ce NOTE The sound off setting does not affect the alarm clock However the intelligent battery stretching algorithm disables all warning tones when there are less than 2 dots left in the battery status display or when the battery symbol is blinking in other displays 3 1 2 Setting the UTC The UTC setting will change the shown time compared to Greenwich O Meridian This feature is practical when travelling through different time zones By pressing SEL the hours will start blinking You may edit them with UP or DOWN buttons in a range of 14h 13h By pressing SEL the minutes will start blinking and yo
58. quency heart rate belts The new SCUBAPRO heart rate belt features a patented skin temperature measurement and transmission that is supported by the MANTIS HR belt positioning is shown below Adjust the strap so that it is comfortable to wear but stays in place When wearing a diving suit the HR belt must be directly against the skin Moisten the electrode areas if your skin is dry or when wearing a dry suit ce NOTE The front side of the temperature HR belt should be against the suit and not covered by body parts You must enable the heart rate setting on your MANTIS refer to the section on Heart rate limits and Skin temperature to learn how to do this After a dive rinse the heart rate belt in fresh water dry it and store in a dry place We recommend having the battery changed by an authorized SCUBAPRO dealer for HR belts with a battery cap With completely sealed HR belts the battery cannot be changed Check the operation conditions and depth rating of the HR belt from the unit or its package 5 2 Nylon arm strap Divers wearing a thick neoprene wetsuit or drysuit may prefer a longer arm strap MANTIS can be equipped with a one piece 31cm 12inch Scubapro nylon arm strap a as amp NOTE The MANTIS arm strap is attached with Solid Stainless Steel pins that are splintered on one end Always push the pins out with the splintered end first In the housing the splintered side can be recognized from the slightly
59. r from the time of reset Closed Circuit Rebreather Central Nervous System oxygen toxicity Desaturation time The time needed for the body to completely eliminate any nitrogen taken up during diving The time spent below a depth of 0 8m Sft Refers to the main gas that is set for the ZH L8 ADT MB algorithm The time in the local time zone Maximum depth reached during the dive Microbubble Microbubbles are tiny bubbles that can build up in a diver s body during and after a dive One of the six steps or levels in SCUBAPRO s customizable algorithm Maximum Operating Depth This is the depth at which the partial pressure of oxygen ppO reaches the maximum allowed level popO max Diving deeper than the MOD will expose the diver to unsafe ppO levels Refers to a dive in which more than one breathing gas is used air and or Nitrox A breathing mix made of oxygen and nitrogen with the oxygen concentration being 22 or higher In this manual air is considered as a particular type of Nitrox Minimum amount of time the diver should wait before taking a plane This is the time that a diver can stay at the current depth and still make a direct ascent to the surface without having to perform decompression stops Oxygen Oxygen concentration used by the dive computer in all calculations Profile Dependent Intermediate Stop is an additional deep stop which is suggested by MANTIS at depth where 3rd or 4th compartment
60. ressing UP or DOWN you may select between enabling or disabling the alarm with the on off setting By pressing SEL the selection will be confirmed 4 5 SWIM mode SEt count For the Surface Exercise you must set the cycle threshold how much depth difference is counted as a stroke cycle and the distance per cycle for the proper result The following illustration shows the parameters MANTIS USER MANUAL 31 i By pressing SEL in the swim menu you reach the swim mode settings By pressing SEL the counter stroke threshold starts blinking A big threshold setting will detect only large movement as a stroke too small a setting may detect too many strokes You must test and adjust this according to your style By pressing the UP or DOWN buttons the value can be selected from 2cm linch to 40cm 16inch By pressing SEL the distance per stroke starts blinking You may select the value from 0 5n7 2ft to 5 0m 16ft by pressing UP or DOWN buttons By pressing SEL the swim mode activation starts blinking and you may scroll between off on pulse with pulse selected the swim mode is enabled and heart rate is activated by pressing the UP or DOWN buttons By pressing the SEL button the values are confirmed 4 6 Algorithm selection You may select your MANTIS operation mode between SCUBA GAUGE or APNEA modes When MANTIS has not been submerged for a while the display looks like the illustration below SELELE L
61. riods are entered in the logbook A WARNING The ideal ascent rate must not be exceeded at any time since this could lead to microbubbles in the arterial circulation which could cause serious injury or fatal issue The alarm persists for as long as the ascent rate is 110 or more of the ideal ascent rate 4 8 9 6 MOD ppO A WARNING The MOD should not be exceeded Disregarding the alarm can lead to oxygen poisoning Exceeding a ppO of 1 6bar can lead to sudden convulsions resulting in serious injury or fatal issue If you exceed the MOD in the bottom row the blinking MOD value is displayed with MAX symbol so you can see by how much you have exceeded it In addition MANTIS will beep continuously Both the blinking of the MOD value and the beeping will continue for as long as you stay deeper than the MOD 4 8 9 7 CNS O 100 A WARNING When the CNS 0 reaches 100 there is danger of oxygen toxicity Start procedure to terminate the dive MANTIS tracks your oxygen uptake via the CNS O clock If the calculated value of CNS O reaches 100 MANTIS will emit a sequence of audible beeps for 12 seconds and the symbol O MAX will be blinking in the bottom right corner The blinking will continue until the value of CNS O drops under 100 The audible signal stays on for as long as the CNS O value equals or exceeds 100 or until youl reach a depth where the ppO is less than O 5bar 4 8 9 8 Missed dec
62. rks will appear on the dive profile in SCUBAPRO LogTRAK 4 7 1 5 Safety stop timer If a minimum depth of 10m 30ft is reached during the dive at a depth of 5m 15ft the safety stop timer will automatically start a 3 minute countdown If you go below 6 5m 20ft the timer will disappear and the no stop time is shown again Upon returning to 5m 15ft the timer will start again automatically 4 7 1 6 Activating the backlight To activate the backlight press LIGHT The duration of the backlight is 10 seconds ce NOTE The backlight is not available when the BATTERY CHANGE warning appears 4 7 1 7 Diving with mb levels Microbubbles are tiny bubbles that can build up inside a diver s body during any dive and normally dissipate naturally during an ascent and on the surface after a dive Dives within no stop times or that observe of decompression stops do not prevent the formation of microbubbles in the venous blood circulation MANTIS is equipped with an enhanced SCUBAPRO algorithm named ZH L8 ADT MB that has been designed to reduce the formation of these microbubbles This enhanced algorithm allows the user to choose a level of conservatism that exceeds the worldwide proven safety record of the standard ZH L8 ADT algorithm There are five levels of additional conservatism or MB levels that can be programmed into the MANTIS from L1 to L5 with L5 being the most conservative and L1 being just a bit more conservative than
63. s At this point press the SEL ESC button to confirm the switch MANTIS will display the text Gas d without flashing and adapt the decompression schedule accordingly 4 8 5 Submerging below the mod after a gas switch 33 63 MANTIS ui If after having switched to Gas d or Gas 2 you inadvertently drop again below the MOD for that mixture the MOD alarm will immediately activate Either switch back to Gas 1 or ascend above the MOD for Gas d or Gas 2 4 8 6 Diving with CCR mode The CCR Closed Circuit Rebreather system is probably older than the Open Circuit 40 MANTIS USER MANUAL SCUBA system because the basic operating principle with manual control didn t require a highly reliable regulator system CCR also uses the gas more efficiently than open loop because the oxygen is added to the breathing loop only as much as needed Respectively the carbon dioxide generated by the body is bound to calc at the scrubber As a side effect the CCR system is nearly bubble free which may be beneficial when engaged in photography or observing fishes underwater In the CCR system the breathing gas ppO partial pressure of the Oxygen is kept constant The CCR system itself takes care of this Compared to an Open Loop system the constant ppO converts to a variable nitrox mix at different depths For example a ppO setting of 1 0 bar is comparable to open an loop 50 Nitrox mix at a depth of 10 meters of salt water A WARNIN
64. starts blinking The time can be selected from 1 hour up to 48 hours or the nitrox reset time can be disabled by pressing the UP or DOWN buttons Gas reset time is disabled when h is shown ce NOTE The Nitrox reset disables the Gas d and Gas 2 4 2 4 Hi 180 to Ju PUL at By pressing the SEL in this menu the maximum heart rate HI value starts blinking and by pressing UP or DOWN you may select the limit from 140 up to 220 By pressing the SEL button the base heart rate LO starts blinking and by pressing UP or DOWN you may select the limit from 60 up to 120 A base heart rate should be selected so that it represents normal heart rate during a typical dive Heart rate limits MANTIS USER MANUAL 25 By pressing the SEL button the PULSE OFF 4 3 SCUBA settings starts blinking You may select between these by pressing the UP or DOWN buttons By LLL pressing SEL the values will be confirmed 4 2 5 Desaturation reset 5 E Hilli b A N N N MANTIS UUU mi NEE A set of SCUBA related selections are grouped to this menu MANTIS By pressing the SEL button the following MI menus can be scrolled down DOWN A WARNING SET SCUBA Resetting desaturation will affect calculations of the algorithm and this may lead to serious SEL injury or death Do not reset desaturation without a solid purpose DOWN When MANTIS is still counting down the UP desaturation some menu changes are not Dive Time p
65. t information on the top row current depth left elapsed dive time right The no stop or decompression information is presented in the middle row MANTIS utilizes the bottom row to display additional information regarding the dive By pressing the UP button the display shows in sequence 1 Maximum depth only if 1m 3ft ascent detected HR Water temperature Actual tank O Actual tank MOD Actual MB Level MB Level 0 deco time O m Q 8 CNS 9 Time of the day 10 Stop timer 11 Skin temperature from SCUBAPRO HR belt 4 7 1 2 Skin temperature Water conducts heat approximately 20 times faster than air Even with the best thermal isolation the body heat is lost through the large skin area and as a consequence body regulates blood circulation in the skin and at the extremities to maintain the body s core temperature Past recommendations to add more conservatism to cold water dive profiles was based on the water temperature and or a dive suit thermal isolation estimation Now SCUBAPRO has taken the next step in diving and presents a new patented wireless technology for measuring the temperature underneath the thermal isolation layer Skin temperature is measured inside the SCUBAPRO heart rate belt The heart rate belt is located at the mid torso which is theideal location for estimating skin temperature independent of the type of dive suit being worn The temperature is modulated to the
66. ther the remaining desaturation time nor the CNS O value MANTIS USER MANUAL 47 R on the surface in gauge mode It will however display a surface interval up to 48 hours and a 48 hour no fly time This no fly time is also the time during which you cannot switch back to computer mode During a dive in GAUGE mode MANTIS displays a stopwatch in the middle row The stopwatch can be stopped by pressing the DOWN button When the stopwatch is stopped it can be reset and restarted by press and hold of the DOWN button While in GAUGE mode the average depth can be reset To reset the average depth press and hold the UP button As in SCUBA mode press the UP button to view the time of day or other alternate information on the bottom row For example in the display below the heart rate has been selected 78hr Alternate info can be selected by pressing UP button in the following order Max depth after 1m Sfeet ascent detected Average depth Temperature Heart rate hr Skin temperature if SCUBAPRO belt is used Current time of the day gt 09 00 43 MANTIS M After a dive the gauge mode surface display shows the dive time on the top row On the middle row the stopwatch is running from the dive start or last manual restart On the bottom row the maximum depth of the dive is shown After a 5 minute timeout the display changes to the GAUGE mode menu 4 10 APNEA mode MANTIS has an advanced APN
67. ts test methods Any information on decompression obligation displayed by equipment covered by this standard is explicitly excluded from its scope 2 MANTIS USER MANUAL TABLE OF CONTENTS 1 2 3 INTRODUCTION TO MANTIS u u u u uuu uuu 5 al CB3U8B Saga tunasqanascassuspasqhysniskasaaqkuscaaqassaqakapapupaqayspasayayasaaqqiqauqawasqa 5 OPERATION MODES u Ul i IUIuuauy s asss sas rasaan iaiaaeaia seini 6 MANTIS AS A WATCH wT 3 1 Clock setting functions 8 3 1 1 Setting the alarm clock QD 3 1 2 Setting the UTC swg 3 1 3 Setting TNS TMC si cases sseassacas cave cocvseccasaedancovaen ennstansaeseenseecdenedsages 9 3 1 4 Setting 24h or am pm mode a 10 3 45 Setting th date siriasi a 10 3 1 6 Setting the sound off silent mode w IO 3 1 7 Accept code protection 10 3 1 8 Checking the battery status a VT 3 2 Menus and functions at the surface n 12 2 2 1 Using the SIOPWALECN ssvetssteacecotccsascsseedsatenasnaresdsguectnadaaneaetessaes 13 3 2 2 Reading the altitude barometer and temperature values 14 3 29 Planning a dive sadiri airain naas 15 3 2 4 Reading the logbook 17 3 2 4 1 Scuba log 18 3 2 4 2 Apnea log 19 3 2 4 3 Surface exercise logs 19 MANTIS AS A DIVE COMPUTER U u u u uuu uu uuu
68. u the time value starts blinking By pressing the UP or DOWN buttons the value can be selected from 5 up to 195 minutes in 5 minutes increments By pressing the SEL button the function starts blinking and you may select on or off by pressing the UP or DOWN buttons The selection is confirmed by pressing the SEL button 4 3 3 Setting the Micro Bubble level By pressing the SEL button in this menu the Micro Bubble level starts blinking By pressing the UP or DOWN buttons you may select personal setting from LO up to L5 which is the most conservative setting The selection is confirmed by pressing the SEL button ce NOTE More about diving with the MB levels can be found in section Diving with MB levels 4 3 4 Units You may select between depth and temperature unit combinations The effect takes place in dive mode in the log book alarm settings altitude settings etc By pressing the SEL button the depth field starts blinking and the value may be changed between meters feet by pressing the UP or DOWN buttons By pressing the SEL the temperature units start blinking and the value can be changed between C F by pressing the UP or DOWN MANTIS USER MANUAL 27 p buttons By pressing the SEL button the By pressing the SEL button the following unit settings will be confirmed menu s can be accessed 4 3 5 Selecting the salt sea or DOWN fresh water UP SEL HIHN TOTAL SESSION ACE SALE Orr
69. u expose your body to a lower partial pressure of nitrogen and consequently you start offgassing After a dive given the higher nitrogen loading in your body even reaching an otherwise negligible altitude can potentially cause decompression sickness Consequently MANTIS constantly monitors the ambient pressure and uses it to evaluate your nitrogen loading and offgassing If MANTIS notices a drop in ambient pressure not compatible with your current nitrogen loading it will activate a warning to alert you of the potentially dangerous situation If you have remaining desaturation on MANTIS you can view the current situation by selecting the dive menu The desaturation text and remaining count down time are shown on the middle row The no dive symbol and count down timer are shown on the top row to indicate the MANTIS USER MANUAL 41 y period when you should not have another immersion due to possible micro bubbles high CNS or excessive nitrogen loading in your body By pressing the SEL button the following page shows the no fly symbol with the count down time on the top row until the restriction is completed The interval from the last dive is shown on the middle row with the text INT Acceptable altitudes are shown at the first page of the planner menu Prohibited altitudes the altitudes MANTIS has computed to be incompatible with your current nitrogen saturation levels are levels above the second altitude on the display
70. u may edit them with UP or DOWN buttons in 15 minute steps The UTC setting will be confirmed by pressing the SEL button 3 1 3 Setting the time 3Et I 900U MANTIS tial In the display above the current time is shown on the display By pressing the SEL button the time setting will be activated hours start blinking and seconds will turn to 00 You may change the hours with UP or DOWN buttons By pressing the SEL button the selection will change to minutes and can be edited the new time setting will be confirmed by pressing the SEL button amp NOTE seconds cannot be edited they always start counting from 0 MANTIS USER MANUAL 9 iy 3 1 4 Setting 24h or am pm mode mod ch By pressing the SEL button the 24h or 12h setting on the bottom row starts blinking You may change the setting by pressing UP or DOWN buttons By pressing the SEL button the mode will be confirmed 3 1 5 Setting the date GALE cuu 4 By pressing the SEL button the first two digits start blinking In 24h mode the first digit are days in 12h mode the month is first You may change them by pressing UP or DOWN buttons By pressing the SEL button the next two digits start blinking and you may change them by pressing UP or DOWN button Again by pressing the SEL buttons the year after the dot starts blinking By pressing SEL button the date will be confirmed 3 1 6 Setting the sound off silent mode Hil Sou
71. via warnings and alarms You can only modify the warning and alarm settings via PC interface Warnings represent situations that require the diver s attention but ignoring them does not represent an immediate risk It is up to you to decide which ones you would like to be active and which ones not The available warnings are MANTIS USER MANUAL 43 y 4 8 9 1 CNS O 75 MANTIS tracks your oxygen uptake via the CNS O clock If the calculated value of CNS O reaches 75 MANTIS will emit a sequence of audible beeps for 12 seconds and the symbol will be blinking in the bottom right corner The blinking will continue until the value of CNS O drops under 75 4 8 9 2 No Stop time 2 minutes If you wish to avoid unintentionally performing a decompression dive MANTIS can activate a warning when the no stop time reaches 2 minutes This applies to current selected MB level no stop time see chapter Diving with MB levels for more information on MB level diving It gives you the opportunity to start ascending before incurring a decompression stop or a level stop obligation MANTIS emits a sequence of audible beeps for 12 seconds and the no stop time will blink The blinking will continue until you ascend sufficiently for the no stop time to increase to 6 minutes or until MANTIS enters into decompression 4 8 9 3 Entering decompression MANTIS LLD MANTIS can activate a warning when the first mandatory d

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