Cressi Leonardo Specifications Page 1

Direction for useComputer Leonardocressi.comENGLISHLEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:10 Pagina 1

10As a result of technological advancements,Cressi reserves the right to modify the instru-ment without notification.Introduction.The Leonardo compute

11dive memory (logbook), as well as a dive si-mulator. The mathematical model of Leonardocan make saturation and desaturation compu-tations of dives c

12tations of dives carried out both with air andwith Nitrox, whose parameters can all be set:from the maximum allowed PO2 value (bet-ween 1.2 bar and

13COMPUTER CONTROL OPERATION OF THE LEONARDOCOMPUTERLeonardo is provided with a user friendly dis-play, which “escorts” the diver during any ope-ratio

144) PLAN: For dive planning5) GAGE: It is the third dive function of thecomputer. It acts just as timer and depthgauge.6) PCLINK: For the connection

15PRE DIVE SCREENS PRE DIVE SCREENSCOMPUTER MENUSAIR NITROXPRESS AND HOLDPRESS AND HOLD(im. 1) (im. 2)(im. 3)LIGHT LIGHTPRE DIVE PRE DIVELEONARDO LIBR

162 - BEFORE DIVINGDIVE-SET MODE: Setting of dive pa-rameters.Once switched on, the computer is in PREDIVE screen mode. The settings for the nextdive

17minimum of 1.2 bar. Just press the central but-ton up to the DIVE SET mode, displayed in thepicture 5, then press and hold the button toenter the mo

18NITROX - PERCENTAGE OF THEOXYGEN (FO2) (Fig. 5)With this setting, it is possible to decide thetype of dive: with air (Dive Air Program), withfractio

19SETTING OF PARTIAL OXYGEN PRESSURE - PO2When the computer issues a sound signal, it means that thesetting has been stored, then it automatically goe

2Main specifications page 4General recommendations and safety measures page 5Introduction page 101 - COMPUTER CONTROLOperation of the Leonardo compute

20SETTING OF NITROX FO2 MIXTUREWhen the computer issues a sound si-gnal, it means that the setting hasbeen stored, then it automaticallygoes back to t

21NOTE: by varying the PO2 set, the com-puter indicates the maximum depth whichmay be reached with that mixture.It is possible to change the setting o

22DIVE SAFETY FACTOR (SF) (im. 6)The Safety Factor is an additional parameterwhose purpose is to make dives safer based onthe existence of personal ri

23ALTITUDE(im. 8)When diving at a location above sea level, it isimportant to check that the appropriate alti-tude has been set. Once entered the DIVE

24SAFETY FACTOR SETTINGPRESS AND HOLDPRESS AND HOLDPRESSPRESSPRESS PRESS(im. 6)PRIMARY MENU SECONDARY MENU SECONDARY MENU TERTIARY MENUWAIT FOR 3 SECO

25DEEP STOP ON/OFFPRESSPRESS AND HOLDPRESS AND HOLDPRESS PRESS PRESS(im. 7)PRIMARY MENU SECONDARY MENU SECONDARY MENU TERTIARY MENUWAIT FOR 3 SECONDST

26ALTITUDE SETTINGPRESS AND HOLDPRESS AND HOLDPRESS PRESS PRESSPRIMARY MENU SECONDARY MENU SECONDARY MENU TERTIARY MENUTERTIARY MENU(im. 8)WAIT FOR 3

27PLAN MODE: Dive planning(im. 9)While on the surface, it is possible to go to thePLAN function in order to visualize, depen-ding on the mixture used

28that sport dives must be carried out within theno decompression guidelines, and at the ma-ximum depth of 132 ft., which is the limit ofsport diving:

29To access the GAGE program, press the but-ton until the “GAGE” screen is displayed, thenpress and hold the button until OFF flashes.Pressing again,

3Diving outside no decompression limits page 50Omitted Decompression stage alarm page 51GAGE MODEdepth gauge and timer) page 52Use of the computer wit

30PLAN MODEGAGE MODEPRIMARY MENUPRIMARY MENU SECONDARY MENU SECONDARY MENUSECONDARY MENU SECONDARY MENU SECONDARY MENUPRESS AND HOLDPRESS PRESS PRESSP

31TIME SET MODEDate and time adjustment. (im. 11)Press the button up to the TIME SET mode.Press and hold the button to enter the mode.The digits of th

32Instrument reset.(im. 13)To reset the instrument, press the button upto the SYSTEM mode, then press and hold toenter the mode. “s.unit” (set units)

33TIME SET MODEPRESS AND HOLDPRESS PRESSPRESS AND HOLDPRESSPRIMARY MENU SECONDARY MENU SECONDARY MENU TERTIARY MENUPRESSTERTIARY MENU SECONDARY MENU P

34SYSTEM MODE: SETTING OF MEASUREMENT UNITAUTOMATICRETURNPRESSPRESS AND HOLDPRESS AND HOLD(im. 12)PRESSPRIMARY MENULEONARDO LIBRETTO 105X80 INGLESE:La

35SYSTEM MODE: INSTRUMENT RESET)(im. 13)PRESSPRESS AND HOLDPRESS AND HOLDPRESSPRESSPRESS AND HOLDPRESS AND HOLDPRESSPRESSAUTOMATICRETURNPRIMARY MENU S

36WHILE DIVINGCOMPUTER FUNCTIONS (im. 14-15)The computer can be set with three dif-ferent functions:1) DIVE AIR if dives are performed with airand you

37Additional important information may be ob-tained by pressing the button during the dive:1) Maximum PO2 set.2) Oxygen percentage of the selected m

38sary to set the computer with the exact values ofoxygen percentage (FO2) contained in the cy-linder to be used during the dive, after havingmeticulo

39NITROXPRESS AND HOLDPRESSAIRWHILE DIVINGAUTOMATICRETURNLIGHTPRESS AND HOLDLIGHTAUTOMATICRETURNPRE DIVEPRE DIVE(im. 14)(im. 15)PRESSLEONARDO LIBRETTO

4Congratulations on your purchase of your Leo-nardo underwater computer, a sophisticatedand complete instrument, realized in order tooffer you the utm

40 DANGER: Do not dive with cylinderscontaining Nitrox mixtures withoutchecking their oxygen percentage. WARNING: : Check the FO2 valueset on the co

41lit up, 100% of the maximum tolerance allowa-ble to the CNS has occurred and serious dangerof hyperoxia exists.It is important to understand, monito

(im. 16)42CNS TOXICITY DISPLAYPRESSPRE DIVELEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 42

PO2 ALARM (im. 17)The computer is able to constantly monitoranother basic parameter relating to oxygen,that is O2 partial pressure value (PO2). Oxy-ge

PO2 ALARMPRESS44(im. 17)PRE DIVE LOG BOOKLEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 44

ASCENT RATE (im. 18)The ascent rate is shown on the display by anarrow indicator at the centre, operating ac-cording to the table on the picture 18: I

NOTE: During the safety stop, the maxi-mum depth can be displayed pressing thebutton.  DANGER: At the end of the safetystop, many divers use to quick

If the diver omits it, the warnings will be dele-ted and the computer recalculates ascent plan-ning without that stop.NOTE: verify that the deep stop

48ASCENT RATESAFETY STOPDEPTHNO SIGNAL0.0-3.9 m/min 4.0-7.9 m/min 8.0-11.9 m/min 12.0 m/minPRESSPRESS AND HOLDLIGHT(im. 18)(im. 19)LEONARDO LIBRETTO 1

DEEP STOP49DECOMPRESSION FOREWARNINGPRESSPRESS AND HOLDLIGHT) (im. 20)(im. 21)LEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 49

5• Sound and visual alarm systems.• CNS oxygen toxicity graphic indicator.• Backlit display.• Built-in calendar and clock.• Logbook (70 hours or 6

DIVING OUTSIDE THE NO DECOM-PRESSION LIMITS(im. 22) DANGER: Do not use this instru-ment to dive beyond the no decom-pression limits! Cressi discoura

 DANGER: NEVER ascend above a de-compression depth. To avoid this situa-tion, you should ascend to a depth slightlydeeper than the stage decompressio

will be Logbook and History. Later, in the PREDIVE screen the “STOP” icon, the DECO wri-ting and the stop icon with the up arrow flash.This means that

DECOMPRESSION WARNINGAIR53PRESSPRESSPRESS AND HOLDLIGHTPRESS AND HOLDLIGHTNITROX(im. 22)LEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 P

OMITTED DECOMPRESSION STAGE ALARM54(im. 23)Deco depth not respected:lower depth.Deco depth not respected:upper depth.PRE DIVELOG BOOKLEONARDO LIBRETTO

 WARNING: Leonardo is designed forsport diving only. It is not intended for com-mercial or professional use, requiring longerdive times and greater

 WARNING: The computer will notperform any saturation and de-saturationcomputation during the remaining 48 hourselapsing from the end of the dive pe

57GAGE FUNCTION(im. 24)LEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 57

BACKLIGHT WHILE DIVINGAIR(im. 25)PRESS AND HOLDLIGHTNITROX58PRESS AND HOLDLIGHTLEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 58

)4 - ON SURFACE AFTER DIVINGDATA DISPLAY AND MANAGEMENTThis chapter deals with all the “on surface” functi-ons, including data processing after a dive

6SESS ONE’S OWN PHYSICAL CON-DITION BEFORE EACH DIVE. CIR-CUMSTANCES SUCH AS COLDWATER TEMPERATURE (LESS THAN50F), POOR PHYSICAL CONDITION,MULTIPLE DI

48 hours after the use of the gage functionor if severe mistakes in dive managementoccurred. NOTE: Should a dive begin with less than 2minutes of surf

NOTE: The PLAN function will be swit-ched off in GAGE function (depthgauge/timer) and if the computer shows“error”. After de-saturation, the computers

• Indicator of CNS O2 toxicity at the end of adive with program DIVE AIR or DIVE NI-TROX. • The display will display all icons relating to thealarms w

63SURFACE INTERVALAIRNITROXPRESS AND HOLDLIGHT(im. 26)LEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 63

PLAN FUNCTIONPRESSPRESS AND HOLDPRESS PRESS64PRIMARY MENU SECONDARY MENU SECONDARY MENUSECONDARY MENUAUTOMATICRETURNPRESS(im. 27)LEONARDO LIBRETTO 105

HISTORY FUNCTION - DIVE HI-STORY(im. 30)The computer is equipped with a dive historymemory for DIVE AIR, DIVE NITROX, andGAGE dives. To access this fu

PCLINK FUNCTION - PC COMPATI-BLE INTERFACEUsing the PC link function with the PC button,the Cressi Leonardo connects with your perso-nal computer usin

67LOG BOOKAIRPRESSPRESS AND HOLDPRESS AND HOLDPRESSPRIMARY MENU SECONDARY MENU SECONDARY MENU TERTIARY MENU(im. 28)after 20 sec.after 20 sec.AUTOMATIC

NITROX(im. 29)68PRESSPRESS AND HOLDPRESS AND HOLDPRIMARY MENU SECONDARY MENU TERTIARY MENUPRIMARY MENUAUTOMATICRETURNafter 20 sec.LEONARDO LIBRETTO 10

(im. 30)69HISTORY PCLINKPRESS PRESSLEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 69

7to the planned dive and, while diving, oftencheck the cylinders’ air capacity by means ofyour manometer. DANGER: DO NOT DIVE AT HIGHALTITUDES BEFORE

SYSTEM RESET - RESET OF THE IN-STRUMENTBy resetting the instrument, all the computati-ons related to the current de-saturation arereset. Dive logbook,

NOTE: When replacing the battery, checkits housing; should any signs of moisture bevisible, please have the instrument checkedby an authorized service

ment). Before closing the cover, check thatthere is no soiling on its seat and apply a thinlayer of silicone grease to battery cover seal.NOTE: Differ

(im. 31)73RUN-DOWN BATTERY WARNINGLEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 73

6 - TECHNICAL SPECIFICATIONS.Algorithm: CRESSI RGBM algorithm. Sample tissues: 9 with saturation hemi-pha-ses between 2.5 and 480 minutesDimensions an

7 - WARRANTY.CRESSI LIMITED WARRANTY FORCRESSI UNDERWATER COMPUTERSAND RELATED ACCESSORIESImportant notice: this warranty does not limitthe statutory

the service foreseen by the warranty in countrydifferent from that where the product has beenpurchased. In that case, any spare part will beprovided f

Cressi or to a Cressi authorized service centreof the alleged defect within a reasonable timeform its observation, however not beyond theexpiry of the

Exclusions and limitationsThis limited warranty does not cover:1. a) product deterioration due to standardwear, b) defects caused by improper use (in-

This limited warranty is void in the followingcases:1. if the Product has been opened, changed orrepaired by personnel not belonging toCressi or a Cr

8 WARNING: Do not dive using Nitroxmixtures without checking the contents andcorrect O2 percentage (FO2). After doingso, set your computer with the m

EQUIPMENT OR STRUCTURES,DOWNTIME, CLAIMS BY THIRD PARTIES,INCLUDING CUSTOMERS AND DAMAGESTO PROPERTIES CAUSED BY THE PUR-CHASE OR USE OF THE PRODUCT O

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Note:82LEONARDO LIBRETTO 105X80 INGLESE:Layout 1 7-06-2011 10:11 Pagina 82

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Via Gelasio Adamoli, 501 - 16165 - Genova - ItaliaTel. (0) 10/830.79.1 - Fax (0) 10/830.79.220E.mail: [email protected] LIBRETT

9 WARNING: avoid any dive presentingvery risky profiles, such as "yo-yo" dives,dives with reversed profiles or several sub-sequent dives du