Cressi GIOTTO User Manual
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Cressi GIOTTO User Manual

Underwater computer
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Summary of Contents for Cressi GIOTTO

  • Page 1 GIOTTO USER MANUAL...

  • Page 2: Table Of Contents

    3 General instructions and safety measures page 3 Introduction page 4 COMPUTER CONTROL page 5 Giotto computer: How it works page 5 BEFORE DIVING page 6 SET MODE: Dive mode setting page 6 DIVE SET mode: Oxygen partial pressure (PO2) page 7 Nitrox –...

  • Page 3: Main Features

    Log book (60 dives). Dive history saved. DANGER: Giotto always keeps the latest oxygen setting. It is very important for diver's safety to always Option for full desaturation reset if needed, helpful when renting the device. check this parameter before each dive.

  • Page 4: Introduction

    This manual is intended to guide the user to comprehend all the functions of the computer before using it in diving. The Giotto computer by Cressi is always off; you can turn it on by pressing any key, while diving it automatically activates at a depth higher than -1,2 m.

  • Page 5: Computer Control

    COMPUTER MENU 10) PRE DIVE: It is the main screen of the GIOTTO computer, as well as the initial, and it is different from the others since it displays the time represented by the clock icon on the bottom at the screen. It allows a quick representation of the previously set parameters.

  • Page 6: Before Diving

    AUTOMATIC RETURN OR NITROX mode according to the type of dive you want to perform. Giotto allows, in fact, all types of dives, WITH LONG Air dive, Nitrox dive, and dives with two different hyper-oxygenated mixtures selected, if previously set, in...

  • Page 7: Dive Set Mode: Oxygen Partial Pressure (Po2)

    PARTIAL OXYGEN PRESSURE (PO2) Giotto is factory set with a Partial Oxygen Pressure (PO2) value of 1.4 bar both for the air dives and Nitrox dives with one or two mixtures (Mix1 and Mix2) in order to ensure the maximum safety during any type of dive.

  • Page 8: Nitrox - Percentage Of Oxygen (Fo2)

    REMARK: The percentage of oxygen FO2 set in the Mix2 is between 21% and 99%. REMARK: The Giotto computer is factory set on the MODE-S AIR dive program (air with PO2 1, 4). To be able to access the Nitrox parameters you need to set the MODE-S menu in position NITROX. Mix1 and Mix2 contain FO2 at 21% and the PO2 at 1.4 factory set by default.

  • Page 9: Dive Safety Factor (Sf)

    DEEP STOP, while others do not contemplate this type of decompression profile. Giotto is factory set with DEEP STOP active. If you want to disable it, just press the right (>) button until you reach the DIVE SET menu; press the central Mode button to enter in the mode.

  • Page 10: Plan Mode: Dive Planning

    It is therefore recommended to wait at least 12/24 hours after arriving at a location above sea level before diving. DANGER: Giotto does not automatically handle dives at a location above sea level. Thus, it is mandatory BEEP to correctly set the altitude level and to respect the acclimatisation period before diving.

  • Page 11: Time Set Mode: Date And Time Adjustment

    Units of measure setting. LONG The Giotto computer can make the calculations by metric units (depth expressed in metres and SYSTEM MODE: UNITS OF MEASUREMENT SETTING temperature expressed in ºC), or in imperial units (feet and ºF). To change the unit of measurement, press the right (>) or left (<) button up to SYSTEM mode, then press the central Mode button until the word...

  • Page 12: While Diving: Computer Functions

    Nitrox mixtures in NITROX DIVE MODE (chapter DIVE SET MODE: Dive parameters setting). In this case the display will show the Nitrox icon which will stay on during the dive and as long as Giotto remains set on NITROX MODE. Once the Nitrox program is on, you have to set the exact values of oxygen percentage (FO2) contained in the cylinder to be used during the dive, after having meticulously analysed its content, so the computer is able to adapt its computing algorithm to the new parameters.

  • Page 13: Diving With Nitrox

    CNS TOXICITY DISPLAY. BEEP-BEEP The Giotto computer by Cressi is able to display a graph of the oxygen toxicity level for the Central Nervous System (CNS). This is related to the Partial Oxygen Pressure and to the time of the diver's exposure to high Partial Oxygen Pressure (PO2).

  • Page 14: Diving With Two Mixtures: Gas Switching

    NITROX DIVE MODE (chapter DIVE SET MODE: Dive parameters setting). In this case the display will show the Nitrox icon which will stay on during the dive and until Giotto does not change the setting again. You have to set the exact values of oxygen percentage (FO2) contained in the cylinders to be used during the dive, after having meticulously analysed its content, so the computer is able to adapt its computing algorithm to the new parameters.

  • Page 15: Decompression Warning Alarm

    DEEP STOP. In order to avoid the risks related to the micro bubbles formed during the ascent, Giotto is able to suggest a DEEP STOP of one or two minutes (in case of decompression dives) at variable depth depending on the dive profile.

  • Page 16: Gage Function (Depth Gauge And Timer)

    GAGE FUNCTION (depth gauge and timer) The Giotto computer is equipped with a third dive computing program GAGE that does not perform any saturation and desaturation calculation, but it operates as a basic device, indicating dive depth and time, as well as some accessory data.

  • Page 17: On Surface After Diving

    LOG BOOK FUNCTION – DIVE LOG. Giotto by Cressi stores data about the last 60 dives. Data is recorded every 20 seconds in the LOG BOOK. To display the previous dives, press and hold the right (>) button until the word LOG appears. The latest AIR LOG BOOK dive will be displayed in chronological order.

  • Page 18: History Function - Dive History

    Access the PC LINK Giotto function by pressing the right (>) or left (<) button. MODE MODE Then, following the instructions it is easy to download all the data contained inside Giotto as the profiles of LONG LONG the dives performed, to see them later reproduces, printed or modified by means of the software.

  • Page 19: System Reset - Device Reset

    The procedure to perform this operation is already explained in the chapter “Before diving”. CARE AND MAINTENANCE Giotto by Cressi has been designed and made to operate in extreme conditions with extensive underwater use. You should remember that it is a precision device deserving appropriate care. Please avoid any violent shock, protect it from extreme heat sources, always wash it in fresh water after using, dry it carefully and do not store if wet, avoid contact with heavy equipment, like diving cylinders.
  • Page 20 In case of product repair or replacement, the data and contents stored in it may be lost. Cressi or a Cressi repairing or replacing the product according to this limited warranty.
  • Page 21 Cressi (e.g. those indicated in the instruction manual of the product) d) defects caused by other events not depending on Cressi;...

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