1. Introduction to <strong>Galileo</strong>RBTSOS modeStopwatchSURF INTSwitch depthRemaining Bottom Time, it is the time that a diver can spend at the currentdepth before having to ascend in order to reach the surface with the settank reserve. The RBT accounts for all existing (if present) and upcomingdecompression obligations.The result of having completed a dive without respecting all mandatorydecompression obligations.A stopwatch, for example to time certain legs of the dive.Surface interval, the time from the moment the dive is closed.The depth at which the diver plans to switch to a higher oxygenconcentration mix while using the multi gas option in the ZH-L8 ADTMB PMG algorithm.T1, T2, TD Refers to tank T1, tank T2, tank TD when using the multi gas option of theZH-L8 ADT MB PMG algorithm.TATUTCWLTotal ascent time, the time it takes to perform the ascent from your currentdepth to the surface in a decompression dive, including all decompressionstops and assuming the ideal ascent rate.Universal Time Coordinated, refers to time zone changes when traveling.Workload.8
1. Introduction to <strong>Galileo</strong>1.2 Operating modesThe functions of the <strong>Galileo</strong> computercan be grouped into three categories,each corresponding to a specifi c mode ofoperation:- surface mode: the computer is on thesurface. In this mode you can changesettings, review your logbook, use thedive planner, see remaining desaturationafter a dive, download to PC and muchmore;- dive mode: the computer is at adepth of 0.8m/3ft or more. In thismode, <strong>Galileo</strong> monitors depth,time, temperature and performs alldecompression calculations;- sleep mode: the computer is onthe surface after 3 minutes withoutoperation. Though the computerappears to be turned off completely, itis still active. <strong>Galileo</strong> checks the ambientpressure once every 60 secondsfor uninterrupted monitoring of theenvironment.heart rate (see section 2.9.5), the currenttemperature, the altitude class (in form of astylized mountain, see section 3.6) and thebattery capacity; on the lower row, the tankpressure, the set oxygen concentration, thecorresponding MOD and the active MB levelsetting (see section 2.3.1).English1.3 Turning on <strong>Galileo</strong> andtime of day displayTo start the computer, press and hold theright button. The screen will briefl y show the<strong>Galileo</strong> logo and then switch to the time ofday display. If you press the right button,you will skip the start-up picture and gostraight to the time of day display. Thinkof this as the home page of your new divecomputer. This is where it all starts.The type of information displayed in surfacemode is different depending on whether<strong>Galileo</strong> has remaining saturation from arecent dive or is completely desaturated.In case of no remaining saturation, thedisplay looks as depicted below. Thebuttons are marked, from left to right, withMENU, LOG and LIGHT. The top of thedisplay shows as default the <strong>Galileo</strong> logo,which can be replaced by the fi rst twolines of the owner information data (referto section 2.9.6 on owner information).The time of day is shown in the middle ofthe display. Underneath it, <strong>Galileo</strong> displaysvarious information: on the top row theIf the computer has remaining desaturationfrom a recent dive, the upper portion ofthe screen is replaced with the followinginformation: desaturation time, no-fl y time,surface interval and CNS O 2 (if applicable).The remaining desaturation time (DESAT)is calculated by the decompression modelin the computer. Any dive started whilethere is remaining desaturation on yourcomputer is considered a repetitive dive,meaning that <strong>Galileo</strong> accounts for the preexistingnitrogen load in your body.The no-fly time (NO FLY) is the time duringwhich an exposure to the reduced pressure9
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5. Taking care of Galileo5.4 IndexA