Suunto HELO2 manual Mixed GAS Dive mode settings, Setting the gases

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5.9. MIXED GAS DIVE mode settings

Suunto HelO2 has several user-definable functions, as well as depth and time-related alarms that you can set according to your personal preferences. The DIVE mode settings are dependent on the dive submode chosen (MIXED GAS, GAUGE), so that, for example, gas mix settings are only available in the MIXED GAS submode.

With Suunto HelO2, most of the settings are planned with the Suunto Dive Planner and downloaded to the dive computer. If necessary, they can be changed manually.

The following figure shows how to enter the DIVE mode settings menu.

	USE UP AND DOWN BUTTONS TO
	TOGGLE BETWEEN DIVE SETTINGS
NOTE	Some settings cannot be changed until 5 minutes has elapsed after
	the dive.

5.9.1. Setting the gases

If set to the MIXED GAS mode, the correct oxygen and helium percentages of the gas in your cylinders (and additional gases) must always be entered into the dive computer to ensure correct tissue and oxygen calculation. In addition, the oxygen partial pressure limit must be set. You can either modify the dive plan with the Suunto Dive Planner or enter the correct values directly into the dive computer after analyzing the gas mixes in your cylinders.

ADJUST WITH	ADJUST WITH
UP AND DOWN	UP AND DOWN
BUTTONS.	BUTTONS.
ACCEPT WITH	ACCEPT WITH
SELECT BUTTON.	SELECT BUTTON.

When in the MIXED GAS setting mode, the equivalent maximum operating depth, based on the chosen setting, is also be displayed.

After entering values for MIX1, you can set additional mixes, MIX2 - MIX8, similarly. You can set them to "PRIMARY", "SECONDARY" or "OFF". MIX 1 is always set as a primary gas.

In order to minimize the risk of error during a dive, it is highly recommended that the mixes are set in the proper order. This means that as the mix number rises, so does oxygen content, and this is the order they are usually used during the dive. Before a dive, only enable the mixes you actually have available and remember to check the set values to make sure they are correct.

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Contents HelO2 Page Welcome to the World of Suunto Diving Instruments Care and Maintenance of MY Suunto Diving Computer Welcome to the World of Suunto Diving Instruments Using HelO2 with Dive Manager and Dive PlannerOr death Or professional diving activitiesPhysician regarding your fitness before diving Diving with the dive computer ASC Time symbol and the upward pointing arrowStop, and Rgbm adjustments are correct USE BACK-UP INSTRUMENTS! Make sure that you use back-upBefore the instrument has counted down the no-fly time Batteries. Recycle or dispose of used batteries properlyNavigating in the menus Button symbols and functionsSymbol Button Press Main functions Suunto HELO2 AT a GlanceDown Long Enter Setting mode Setting the units Time mode settingsSetting the time Setting the dateSetting the tones Setting the backlightAC water contacts Planning your dives Before DivingSuunto Technical Rgbm Dive computer limitations Emergency ascentsMixed gas diving Alarm indication Alarm reason Audible and visual alarms Gas mix Alarm indication Error conditions Out of calculation limitsOmitted decompression Wireless transmissionInstalling the wireless transmitter Pairing and code selectionDisplay Indication Transmitting dataSetting the gases Mixed GAS Dive mode settingsDive Before you have ascended above this depth Setting the depth alarmSetting the dive-time alarm Setting the personal/altitude adjustmentsSetting the HP code Setting the sample rateSetting the tank pressure alarm Setting the tank pressureDive mode activation Accessing Dive modeActivation and pre-checks Alt. adjustment value Altitude range Battery power indicationDiving at altitude Before diving Personal adjustmentsPersonal adjust- Condition Desired tables Ment value How the Altitude value is setOther personal injury, and death Safety StopsRecommended Safety Stops Mandatory Safety StopsDeep stops Diving-related information DivingBasic dive data Bookmark Ascent rate indicatorDecompression dives Than at the ceiling Ceiling, ceiling zone, floor and decompression rangeDisplay at the ceiling zone Accident, you should stay somewhat below the ceilingDisplay below the floor Display above the floorOxygen and helium displays Diving in Mixed GAS modeBefore diving in Mixed GAS mode Default gas mix settingsGas change and multiple breathing gas mixes Oxygen limit fraction OLFDiving in Gauge mode Dive numbering Alarms Symbol on displayAfter Diving Surface intervalFlying after diving Plan modeDive Planning mode PLANnodec Repetitive dive planningDive numbering shown during dive planning PLANNoDec modeMemory mode Mixed GAS mode, it does not affect the calculationsDive logbook MEMLogbook Suunto Dive Planner SDP Dive historySuunto Dive Manager SDM Dive Planner. It ensures that you have a valid decompressionPage Water Contacts and Push Buttons Care and Maintenance of MY Suunto Diving ComputerBattery replacement and strap kits must be used FAQsWarranty Required tools Battery ReplacementBattery kit Replacing the batteryTransmitter Battery compartment lid, indicating a leakWireless transmitter battery replacement Made in a proper manner to avoid any leakage of water intoStalling the transmitter battery Transmitter battery kitPage Technical Data Rgbm BatterySuunto Technical Rgbm decompression model Diver safety and Suunto Technical Rgbm modelAfter dive planning Oxygen exposure Altitude divingCopyright Trademark Intellectual PropertyPatent notice User’s responsibility Disclaimers12.2. CE Exclusions and Limitations Warranty PeriodOther important notices Access to Suunto warranty serviceLimitation of Liability Page Disposal of the Device EAD EAN GlossaryNo DEC Time Copyright Customer Service ContactsPage TWO Year Warranty Page Page Suunto Oy 4/2009