Oceanic VT3 Operating Manual

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OCEANIC

VT3

Operating Manual

(-r04 cover art to be placed on front/back is provided separately)

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CONTENTS

WARRANTY, NOTICES, DECOMPRESSION MODEL ....................................................................................................7

FCC ID ...............................................................................................................................................................................8

INTRODUCTION AND GENERAL FEATURES AND DISPLAYS .................................................................................... 9

INTERACTIVE CONTROL CONSOLE ..................................................................................................................... 10

OPERATING MODE STRUCTURE ........................................................................................................................... 11

AUDIBLE ALARM ...................................................................................................................................................... 12

SMARTGLO BACKLIGHT ........................................................................................................................................ 14

POWER SUPPLY ...................................................................................................................................................... 15

BAR GRAPHS ........................................................................................................................................................... 17

PC INTERFACE ......................................................................................................................................................... 19

SYMBOLS AND ALPHA NUMERIC GRAPHICS ...................................................................................................... 19

ALPHA / NUMERIC DISPLAYS................................................................................................................................ 20

Tank Pressure Display..........................................................................................................................................20

Depth Displays...................................................................................................................................................... 20

Air Time Remaining Display ................................................................................................................................. 20

Date. Time, and Temperature Displays ................................................................................................................ 21

FREE Dive Mode Displays ................................................................................................................................... 21

SURFACE SEQUENCE AND OPERATING MODES ..................................................................................................... 23

OPERATING MODES................................................................................................................................................ 24

SURFACE MODE ...................................................................................................................................................... 24

NORM (Normal) Surface Main Display ................................................................................................................ 25

NORM Surface Main Button Operations .............................................................................................................. 26

VT3 Battery Status .............................................................................................................................................. 27

Transmitter Status .............................................................................................................................................. 27

SET MODES ..............................................................................................................................................................28

SET F GROUP (FO2) ................................................................................................................................................ 28

Set FO2 for NORM Nitrox Dives .......................................................................................................................... 29

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CONTENTS (continued)

Set FO2 GAS 1..................................................................................................................................................... 31

Set FO2 GAS 2..................................................................................................................................................... 32

Set FO2 GAS 3..................................................................................................................................................... 33

Set FO2 50% Default ........................................................................................................................................... 34

SET A GROUP (NORM/GAUG ALARMS) ................................................................................................................ 34

Set Audible Alarm ................................................................................................................................................. 35

Set Depth Alarm ................................................................................................................................................... 36

Set EDT (Elapsed Dive Time) Alarm ...................................................................................................................37

Set TLBG (Tissue Loading Bar Graph) Alarm...................................................................................................... 38

Set DTR (Dive Time Remaining) Alarm................................................................................................................ 39

Set Turn Pressure Alarm (TMT1) ......................................................................................................................... 40

Set End Pressure Alarm ....................................................................................................................................... 41

Set PO2 Alarm...................................................................................................................................................... 42

SET U GROUP (UTILITIES) ...................................................................................................................................... 43

Set Wet Activation ................................................................................................................................................44

Set Units of Measure ............................................................................................................................................ 45

Set NORM Safety Stop.........................................................................................................................................46

Set Conservative Factor .......................................................................................................................................47

Set Backlight Duration ..........................................................................................................................................48

Set Sampling Rate................................................................................................................................................ 49

Set TMT1 (Transmitter 1 Link Code) ....................................................................................................................50

Set TMT (Transmitter) 2-3 Use ............................................................................................................................ 52

Set TMT2 (Transmitter 2 Link Code) ...................................................................................................................53

Set TMT3 (Transmitter 3 Link Code) ...................................................................................................................55

SET T GROUP (TIME/DATE) ....................................................................................................................................57

Set Hour Format ...................................................................................................................................................58

Set Time................................................................................................................................................................ 58

Set Date ................................................................................................................................................................ 59

SERIAL NUMBER (VT3) ........................................................................................................................................... 60

NORM SURF ALT DISPLAY (SURFACE ALTERNATE) ........................................................................................... 61

NORM PLAN MODE .................................................................................................................................................. 61

FLY MODE ................................................................................................................................................................. 64

SAT MODE (DESATURATE) ..................................................................................................................................... 66

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CONTENTS (continued)

NORM/GAUG LOG MODE ........................................................................................................................................ 67

NORM/GAUG HISTORY MODE................................................................................................................................ 72

OVERVIEW OF DISPLAYED SYMBOLS AND ICONS ............................................................................................ 74

OVERVIEW OF DIVE MODE OPERATION ................................................................................................................... 75

POSITIONING OF THE VT3 ..................................................................................................................................... 77

Link Interruption Underwater ................................................................................................................................77

DIVE TIME REMAINING (DTR)................................................................................................................................. 78

No Decompression Dive Time Remaining (NDC) ................................................................................................79

Oxygen Accumulation Time Remaining (OTR) .................................................................................................... 80

Air Time Remaining (ATR).................................................................................................................................... 80

Air Time Remaining Alarm.................................................................................................................................... 81

ASCENT RATE ALARM ............................................................................................................................................ 82

CONTROL OF DISPLAYS.........................................................................................................................................83

WET CONTACTS....................................................................................................................................................... 84

NORM TYPE DIVE MODES ........................................................................................................................................... 85

NORM NO DECOMPRESSION DIVE MODE ........................................................................................................... 86

NORM Dive No Deco Safety Stop....................................................................................................................... 89

DECOMPRESSION DIVE MODE ........................................................................................................................ 91

VIOLATION MODES .................................................................................................................................................. 95

NORM HIGH PO2 ....................................................................................................................................................100

HIGH OXYGEN ACCUMULATION..........................................................................................................................101

SUMMARY OF NORM/GAUG WARNING AND ALARM MESSAGES .................................................................. 102

SWITCHING GAS MIXES AND BUDDY PRESSURE CHECK.................................................................................... 103

SWITCHING GAS MIXES (NORM ONLY) .............................................................................................................. 104

BUDDY PRESSURE CHECK (NORM ONL Y)......................................................................................................... 109

NORM POST DIVE MODES ......................................................................................................................................... 113

TRANSITION PERIOD ............................................................................................................................................ 114

AFTER THE TRANSITION PERIOD ....................................................................................................................... 116

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CONTENTS (continued)

GAUGE OPERATING MODE ....................................................................................................................................... 117

GAUG SURFACE DISPLAYS .................................................................................................................................. 118

GAUG DIVE DISPLAYS .......................................................................................................................................... 119

FREE DIVE OPERATING MODE ................................................................................................................................. 121

FREE SURFACE DISPLAYS ...................................................................................................................................122

FREE COUNTDOWN TIMER (CDT) ....................................................................................................................... 124

SET FREE CDT ....................................................................................................................................................... 126

SET FREE EDT (ELAPSED DIVE TIME) ALARM .................................................................................................. 127

SET FREE DEPTH ALARMS .................................................................................................................................. 128

FREE DIVE DISPLAYS............................................................................................................................................ 132

FREE DIVE ALARMS ..............................................................................................................................................133

ENTRY INTO DECO DURING A FREE DIVE ......................................................................................................... 136

REFERENCE................................................................................................................................................................. 137

UPLOADING SETTINGS AND DOWNLOADING DATA ........................................................................................ 138

PC Compatibility Requirements..........................................................................................................................139

CARE AND CLEANING ........................................................................................................................................... 140

INSPECTIONS AND SERVICE ............................................................................................................................... 140

BATTERY REPLACEMENT .................................................................................................................................... 142

INSTALLING A TRANSMITTER ON A REGULATOR ............................................................................................ 148

TRANSMITTER COMPATIBILITY WITH NITROX .................................................................................................. 148

ALTITUDE SENSING AND ADJUSTMENT ............................................................................................................ 149

CHARTS OF NO DECOMPRESSION LIMITS AT ALTITUDE ................................................................................ 150

CHART OF OXYGEN EXPOSURE LIMITS ............................................................................................................ 151

SPECIFICATIONS ................................................................................................................................................... 152

ADDITIONAL INFORMATION PERTAINING TO FREE DIVE MODE .................................................................... 159

INSPECTION/ SERVICE RECORD......................................................................................................................... 160

FULL DISPLAY ........................................................................................................................................................ 161

OCEANIC WORLD WIDE ....................................................................................................................................... 162

Pay special attention to items marked with this Warning symbol.

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LIMITED TWO-YEAR WARRANTY

For details, refer to the Product Warranty Registration Card provided. Register on-line at www.OceanicWorldwide.com

This operating manual is copyrighted, all rights are reserved. It may not, in whole or in part, be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine readable form without prior consent in writing from Oceanic / 2002 Design.

VT3 Operating Manual, Doc. No. 12-2705

San Leandro, CA USA 94577

TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE

Oceanic, the Oceanic logotype, the Oceanic 'O' symbol, VT3, the VT3 logo, Air Time Remaining (ATR), Diver Replaceable Batteries, Graphic Diver Interface, Tissue Loading Bar Graph (TLBG), Pre Dive Planning Sequence (PDPS), SmartGlo, Set Point, Control Console, Turn Gas Alarm, and OceanLog are all registered and unregistered trademarks , trade names, and service marks of Oceanic. All rights are reserved.

PATENT NOTICE

U.S. Patents have been issued, or applied for, to protect the following design features: Air Time Remaining (U.S. Patent no. 4,586,136 and 6,543,444) and Data Sensing and Processing Device (U.S. Patent no. 4,882,678). Set TLBG Alarm and other patents pending. User Setable Display (U.S. Patent no. 5,845,235) is owned by Suunto Oy (Finland).

DECOMPRESSION MODEL

The programs within the VT3 simulate the absorption of nitrogen into the body by using a mathematical model. This model is merely a way to apply a limited set of data to a large range of experiences. The VT3 dive computer model is based upon the latest research and experiments in decompression theory. Still, using the VT3, just as using the

U.S. Navy (or other) No Decompression Tables, is no guarantee of avoiding decompression sickness, i.e. “the bends.” Every diver’s physiology is different, and can even vary from day to day. No machine can

predict how your body will react to a particular dive profile.

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WARNING: If your VT3 stops working for any reason while operating as a Dive Computer, it is important that you have anticipated this possibility and are prepared for it. This is an important reason for not pushing the no decompression and oxygen exposure limits, and a critical reason to avoid entering decompression. If you dive in situations where your trip would be ruined or your safety would be jeopardized by losing the use of your VT3, a backup instrument system is highly recommended.

FCC ID: MH8A

FCC COMPLIANCE:

This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1.) this equipment may not cause harmful interference, and 2.) this equipment must accept any interference received, including interference that may cause undesired operation.

FCC INTERFERENCE STATEMENT:

This equipment has been tested and found to comply with the limits for an Intentional Radiator, a Class B Digital Device, pursuant to Part 15 of FCC Rules, Title 47 of the Code of Federal Regulations. These rules are designed to provide reasonable protection against harmful interference in a commercial or residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

There is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician.

Warning: Changes or modifications to this unit not expressly approved by Oceanic/2002 Design could void the user's authority to operate the equipment.

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WARNING: Prior to diving with the VT3, you must also read and understand the Oceanic Dive Computer Safety and Reference Manual, Doc. No. 12-2262, which provides Important Warnings and Safety Recommendations as well as general product information.

INTRODUCTION

GENERAL FEATURES AND DISPLAYS

AND

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INTRODUCTION

Welcome to OCEANIC and thank you for choosing the VT3 !

It is extremely important that you read this Operating Manual in sequence and understand it completely before attempting to use the VT3 as a dive computer.

It is equally important that you read the Oceanic Dive Computer Safety and Reference Manual (Doc. No. 12-2262) provided with your VT3. It contains information that you must become familiar with prior to diving with your VT3.

Remember that technology is no substitute for common sense, and a dive computer only provides the person using it with data, not the knowledge to use it.

INTERACTIVE CONTROL CONSOLE

The Interactive Control Console consists of 3 Control Buttons that allow you to select mode options and access specific information. They are also used to link the Transmitter(s), enter Settings, activate the Backlight, and acknowledge the Audible Alarm.

Throughout this manual they will be referred to as the M, S, and A buttons.

• Left/Front - Mode (M) button

• Right/Front - Advance (A) button

• Right/Side - Select (S) button

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OPERATING MODE STRUCTURE

The M button is used to access 3 operating Modes (Fig. 1) that include NORM (Normal Air/Nitrox Dive Computer), GAUG (Digital Gauge Mode), and FREE (Free Dive Mode).

The screens of the Main Modes and Sub Modes will remain on display until a button is pressed to access another screen or Mode, activate a sequence, or for 2 minutes if no button is pressed.

When Wet Activation is set On, the VT3 will enter the selected Dive Mode upon descent to 5 FT (feet) /1.5 M (meters), regardless of what surface screen is displayed at the time.

WARNING: When Wet Activation is set OFF, the VT3 must be activated by push button prior to the first dive of a new series. Commencing a dive will not activate Dive Mode unless Wet Activation is set ON or the unit is activated.

Entering Settings and Plan Mode are available in NORM SURF Mode which also allows access to Battery/Transmitter Status, Fly, Desat, Log, and History Modes. Tank Pressure is displayed if a Transmitter is active and Linked with the VT3.

NORM (Normal Air/Nitrox)

GAUG (Digital Gauge Mode)

FREE (Mode)

Fig. 1 - Operating Modes

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GAUG Surface Mode allows access to Battery/Transmitter Status, Fly, Log, and History Modes. It also displays Tank Pressure.

FREE Mode allows access to sub modes by first accessing NORM Surface Mode. It does not display Tank Pressure.

Once a dive is made in GAUG Operating Mode, the VT3 is locked into that Mode for 24 hours after the dive.

The VT3 also features 2 modes for use of Transmitter Pressure. A setting allows you to choose whether Transmitters 2 and 3 are for your use (SELF) or for checking 1 or 2 Buddies' Tank Pressure(s). The setting remains fixed until changed in the NORM/GAUG SET U menu.

AUDIBLE ALARM

Most warning situations that activate the Audible Alarm while operating in NORM or GAUG Mode cause the VT3 to emit 1 beep per second for 10 seconds, or until the situation is corrected, or it is acknowledged by momentarily pressing and releasing the S button (less than 2 seconds). After being acknowledged and the situation corrected, the Alarm will sound again upon reentry into the warning situation, or entry into another type of warning situation.

FREE Dive Mode has its own set of Alarms which emit 3 short beeps either 1 or 3 times which cannot be acknowledged or set Off.

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A red LED Warning Light, located on the left side of the housing, is synchronized with the Audible Alarm. It will flash as the Audible Alarm sounds. It will turn Off when the Alarm is acknowledged or the situation is corrected. The Audible and LED will not be active if the Alarm is Set OFF (a group A setting).

Situations that will activate the NORM/GAUG 10 second Alarm include -

• Air Time Remaining (ATR) at 5 minutes, then again at 0 minutes.

• ATR becomes less than No Deco and O2 Time Remaining for 1 minute.

• Turn Pressure at the Set Point selected (Transmitter 1).

• End Pressure at the Set Point selected (active Transmitter).

• Descent deeper than the Max Depth Set Point selected.

• Dive Time Remaining at the Set Point selected.

• Elapsed Dive Time at the Set Point selected.

• High PO2 of 1.60 ATA or the Set Point selected.

• High O2 of 300 OTU (single or daily exposure).

• Tissue Loading Bar Graph at the segment Set Point selected.

• NORM/GAUG Ascent Rate exceeds 60 FPM (18 MPM) when deeper than 60 FT (18 M), or 30 FPM (9 MPM) at 60 FT (18 M) and shallower.

• Loss of the active Transmitter Link signal for more than 15 seconds during a dive.

• Entry into Decompression Mode (Deco).

• Conditional Violation (above a required Deco Stop Depth for less than 5 minutes).

• Delayed Violation (above a required Deco Stop Depth for more than 5 minutes).

• Delayed Violation (a Deco Stop Depth greater than 60 FT/18 M is required).

• Delayed Violation (Maximum Operating Depth of 330 FT/100 M is exceeded).

• A Gas Switch to another tank would expose the diver to PO2 greater than 1.60 ATA.

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A single short beep (which cannot be disabled) is emitted for the following -

• Upon completion of a Hot Swap battery change.

• Change from Delayed to Full Violation 5 minutes after the dive.

3 short beeps (which cannot be disabled) are emitted for the following -

• FREE Dive Elapsed Dive Time Alarm (3 beeps every 30 seconds if set On).

• FREE Dive Depth Alarms 1/2/3 (set sequentially deeper) - each 3 beeps 3 times.

• FREE Dive TLBG Alarm (Caution zone, 7 segments) - 3 beeps 3 times.

• Entry into Deco during a FREE Dive (Permanent Violation) - 3 beeps 3 times.

• Free Dive Mode Countdown Timer reaches 0:00 - 3 beeps 3 times.

During the following NORM Dive situations, the 10 second Audible Alarm will not turn off when acknowledged -

• Ascending above a required Decompression Ceiling Stop Depth for more than 5 minutes (referred to as a Delayed Violation).

• Decompression requires a Ceiling Stop Depth of 70 FT/21 M or deeper.

• Being on the Surface for 5 minutes after a Conditional Violation.

SMARTGLO® BACKLIGHT

To activate the SmartGlo Backlight - press the S button.

• If ambient light level is low, the Backlight will activate and illuminate the display for button depression time* plus the user set Duration time of 0, 5, or 10 seconds, for a maximum of 20 seconds.

(*The Backlight will turn Off if the button is depressed for more than 10 seconds.)

• Press the button again to activate as desired.

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NOTE: Extensive use of the Backlight reduces estimated Battery life. Also, the Backlight does not operate during a Low VT3 Battery Condition or when the VT3 is connected to a PC.

POWER SUPPLY

The VT3 utilizes one 3 volt CR2450 Lithium Battery. The Battery should operate normally for 1 year or 300 dive hours if 2 dives are conducted during each dive period. The VT3 checks its battery voltage every 2 minutes during surface operation.

• If voltage of the VT3 decreases to the Warning level (2.75 volts), the Battery icon will appear on Surface display screens (Fig. 2a) as an indication that the Battery should be changed prior to commencing a series of dives.

• If the VT3's voltage decreases to the Alarm level (2.50 volts), the Battery icon will flash and the VT3 will shut Off.

• Low Battery Warning/Alarm conditions are not displayed during Dive Modes.

• If a Low Battery Condition was not displayed prior to starting a Dive, and a Low Battery Condition occurs during the dive, there will be sufficient Battery power remaining to maintain operation for the remainder of that dive.

Fig. 2 - Low Battery Warning

Fig. 3 - Low Battery Alarm

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Transmitters use one 3 volt, CR2 Lithium Battery. A Transmitter's battery should provide normal operation for 1 year or 300 dive hours. Transmitters check battery voltage when they are pressurized and will send a Low Battery signal to the Receiver in the VT3 when the voltage drops below the Warning level.

Fig. 4 - Battery Status (Good)

Fig. 5 - Transmitter 1 Battery

Status (Good)

Fig. 6 - Transmitter 3 Status

(Not Available)

• Transmitter Low Battery Warning/Alarm conditions are only displayed on Status screens that can be accessed while viewing the NORM Surface Display.

To check the condition of the VT3 or a Transmitter's Battery if NORM or GAUG Mode is selected, depress the S button for 2 seconds while viewing the NORM or GAUG Surface Main Display, then release it.

• As the button is depressed, the VT3's Receiver will activate.

• 2 seconds later, the VT3's Battery status will be displayed for 3 seconds (Fig. 4), then -

• if active and linked, Transmitter 1's Battery status will be displayed for 3 seconds (Fig. 5), then -

• if active and linked, Transmitter 2's Battery status will be displayed for 3 seconds, then -

• if active and linked, Transmitter 3's Battery status will be displayed for 3 seconds, then -

• the display will then revert to Surface Mode.

• If a Transmitter is not active and linked, the message NotAvAil (not available) will be displayed (Fig. 6).

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BAR GRAPHS

The VT3 features a Tissue Loading Bar Graph (TLBG) (Fig. 7a) that represents your relative no decompression or decompression status.

As your Depth and Elapsed Dive Time increase, segments will add to the TLBG, and as you ascend to shallower depths, the segments of the TLBG will begin to recede, indicating that additional no decompression time is allowed.

The TLBG monitors 12 different nitrogen compartments simultaneously and displays the one that is in control of your dive. It consists of 8 segments, the lower 7 represent No Decompression status and the 8th at the top indicates a Decompression condition.

When the VT3 is set to operate in NORM Nitrox mode, the 5 segment O2 Bar Graph (O2BG) (Fig. 7b) will represent oxygen accumulation.

Displays associated with oxygen and the O2 Bar Graph will be displayed if FO2 for any Gas (1, 2, or 3) has been set at a value other than 'Air' (e.g., a numerical value).

The O2BG will show the maximum of either per dive accumulated oxygen or 24 hour period accumulated oxygen. As your oxygen exposure (accumulation) increases during a NORM dive, segments will add to the O2BG, and as saturation decreases, it will begin to recede, indicating that additional exposure is allowed for that dive and 24 hour period.

Fig. 7 - TLBG and O2BG

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VARI

Deeper than 60 FT (18 M)

Segments Ascent Rate = Displayed FPM MPM 0 0-20 0-6 1 21-30 6.1-9 2 31-40 9.1-12 3 41-50 12.1-15 4 51-60 15.1-18 5 60 + 18 +

60 FT (18 M) & Shallower

Segments Ascent Rate = Displayed FPM MPM 0 0-10 0-3 1 11-15 3.1-4.5 2 16-20 4.6-6 3 21-25 6.1-7.5 4 26-30 7.6-9 5 30 + 9 +

Fig. 8 - VARI

The VT3 will store oxygen accumulation calculations for up to 10 dives conducted during a 24 hour period. If the maximum limit for NORM dive oxygen loading has been exceeded for that day (24 hour period), all of the segments of the O2BG will be displayed flashing.

Depth/Time values will not appear in Plan Mode until the O2BG recedes into the normal zone (lower 4 segments) indicating that your daily oxygen dosage has decreased an amount equivalent to the amount accumulated during the latest dive completed.

The VT3 also features a 5 segment NORM/GAUG Mode Variable Ascent Rate Indicator (VARI) (Fig. 8a) that provides a visual representation of ascent speed (i.e., an ascent speedometer). The segments of the VARI represent two sets of speeds which change at a reference depth of 60 feet (18 meters). Refer to the chart for segment values.

WARNING: At depths greater than 60 feet (18 meters), ascent rates should not exceed 60 feet per minute (18 meters per minute). At depths of 60 feet (18 meters) and shallower, ascent rates should not exceed 30 feet per minute (9 meters per minute).

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PC INTERFACE

Interface with a PC is accomplished by connecting the VT3 to a PC USB Port using the USB Interface Cable provided. The same Cable is used for Upload and Download.

The software program is on the OceanLog CD provided, together with a USB Driver. The program's Help section serves as the User Manual and can be printed for personal use. The Settings Upload program is used to check the VT3's existing Settings and for entering settings into the VT3. The Data Download program is used to retrieve Data that was sampled during dives and stored in the VT3's memory.

The VT3 checks for an External Access request once every second while in Surface Mode. Checks are not made if the unit is WET. For a connection to be made, the Interface Cable is plugged into the VT3's Data Port and plugged into a PC USB Port. To establish the connection, the PC program must be running asking 'RUTHERE'. When the connection is made, all segments of the VT3 appear on the display until completion of the Upload or Download operation.

• The VT3 reverts to the Surface Mode Main screen after completion of the Upload or Download operation, or after 2 minutes if no PC action was taken.

SYMBOLS AND ALPHA NUMERIC GRAPHICS

The upper line of digits on the LCD screen is used to convey alpha Messages such as Day of the Week, Operating Modes, items being Set, Gas and Transmitter identification, Altitude level, and Alarm identification. At times, the second line is also used to display alpha numeric graphics such as PO2 and On/Off. The FO2 setting of a selected Gas will appear in the lower line.

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ALPHA / NUMERIC DISPLAYS

Tank Pressure Display (NORM/GAUG only)

When the VT3's Receiver is set ON and active, Tank Pressure from an active Transmitter that is properly linked will be displayed on the NORM or GAUG MAIN screens (Fig. 9a).

Fig. 9 - Main Dive Display

Fig. 10 - ALT Dive Display

Fig. 11 - Safety Stop Display

Values of Pressure are displayed numerically from 000 PSI (00 BAR) up to 5,000 PSI (345 BAR) in increments of 5 PSI (1 BAR).

Depth Displays (all Modes) During dives, the Current Depth display (Fig. 9b) and Maximum Depth which is accessed as an Alternate Display (Fig.

10a) indicate Depths from 0 to 399 FT (120 M) in increments of 1 FT (.1 M).

During a No Decompression Safety Stop, the set Stop Depth (Fig. 11a) is displayed and during a Decompression condition, the required Ceiling Stop Depth is displayed. These Depths

are graphically on the top row of the screen with the letters F indicating Feet and M indicating Meters. (ex: 10F = 10 FT Stop)

Air Time Remaining (ATR) Display

If the VT3's Receiver and a Transmitter are active and properly linked, ATR is displayed digitally in decrements of 10 minutes when it is 60 minutes or less (Fig. 11b).

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Time, Date, Temperature Displays Time of Day and NORM/GAUG Mode displays are

shown in hour:minute format (i.e., 1:16 represents 1 hour and 16 minutes, not 116 minutes).

FREE Dive Mode displays are shown in minute:second format. The colon that separates hours and minutes (minutes and seconds) blinks once per second when the display is indicating real time (e.g., Surface Interval, Elapsed Dive Time), and is solid (non-blinking) when times are calculated projections (e.g., Time to Fly, Plan).

The Primary Time display, at the bottom of the screen, has the largest digits of the display (Fig. 12a). Another time display (Fig. 12b) is located in the middle row. Both displays are identified by the symbol TIME.

There is an Alternate Display providing Day of Week, Tem- perature, and Time of Day. This common display (Fig. 13) can be accessed while operating in NORM, GAUG, or FREE Modes while on the Surface and during Dives.

Date is displayed only to identify dives when they are accessed in the LOG Mode. When set for Imperial Units, Month is to the left of Day (Fig. 14a) separated by a decimal point (month.day). When set for Metric, Month is to the right of Day (day.month).

Fig. 12 - Time Displays

Fig. 13 - Time of Day

Fig. 14 - Date (Log Mode)

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NOTE: Each display represents unique pieces of information. It is imperative that you understand the formats, ranges, and values of the information represented to avoid any possible misunderstanding that could result in error.

You must also understand the icons, symbols, and alpha/ numeric messages presented.

The Informational Displays are described in detail as the various operating modes they appear in are presented throughout this manual.

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SURFACE SEQUENCE

OPERATING MODES

AND

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OPERATING MODES

As described previously, the VT3 features 3 Operating Modes -

• NORM - for Normal Air or Nitrox dives

• GAUG - for dives with no Nitrogen/Oxygen calculations

• FREE - for dives with no SCUBA

Fig. 15A - NORM SURF MAIN

Fig. 15B - GAUG SURF MAIN

Fig. 15C - FREE SURF MAIN

REMINDER: Once a dive is made in GAUG Mode, the VT3 is locked into that Mode for 24 hours after the dive.

SURFACE MODE

After activation and while the default Surface Main screen is displayed, pressing and holding the M button for 2 seconds steps through the operating mode Surface Main screens.

Fig. 15 - NORM MAIN >> GAUG MAIN >> FREE MAIN

• The Operating Mode selected (NORM, GAUG, or FREE) will remain on display for 2 hours until a dive is made or another Operating Mode is selected.

If a dive has been conducted within the past 24 hours, the SURF MAIN screen for that mode will be displayed until changed.

At any time while operating in Surface Modes, the VT3 will enter Dive Mode upon descent to 5 FT (1.5 M).

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The VT3 will enter POST DIVE SURFACE MODE following a dive upon ascent to 4 FT (1.2 M). The Surface Interval Time colon will flash during the first 10 minutes after a NORM/GAUG dive (Fig. 16), or first 1 minute after a FREE dive.

During the first 2 hours after a dive, the SURF MAIN screen for the Operating Mode selected prior to the dive (NORM, GAUG, or FREE) remains on display as the Default SURF MAIN screen.

NORM SURF MAIN, information provided includes (Fig. 17):

> Graphic NORM alternating with the Altitude Level graphic

SEA (or EL2 through EL7) and WET (if the unit is wet), each On 3 seconds then 1/4 second blank.

> Battery icon if an VT3 Low Battery Warning Condition

exists, flashing if Too Low

> Tank Pressure and symbol PSI (or BAR), if the Receiver is

successfully Linked with an active Transmitter.

> Symbol DIVE and Number of that dive (0 if no dive has

been made yet). > Symbols TIME and SURF, and Surface Interval (hr:min). > NITROX symbol, if any GAS is set for a Nitrox dive. > Tank 1 icon representing GAS 1, which is the default start

Gas and default Gas 10 minutes after a dive. > TLBG if any after a NORM or FREE dive. > O2BG if any after a NORM Nitrox dive.

Fig. 16 - NORM SURF MAIN

(post dive, unit wet)

Fig. 17 - NORM SURF MAIN

(no dive made yet, dry)

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NORM SURF MAIN - Button Operations:

• Pressing the S button will activate the Smartglo Backlight.

• Pressing and releasing the A button repeatedly (< 2 seconds each time) will step

through the NORM Surface Sequence -

>> NORM SURF MAIN > NORM SURF ALT > PLAN > FLY > SAT > LOG > HISTORY.

• Depressing both the A and S buttons simultaneously for 2 seconds will access the SET

Menu (F > A > U > T) and a VT3 Serial Number display.

>> SURF MAIN > SET FO2 > SET Alarms > SET Utilities > SET TIME > SN

• Pressing and holding the M button for 2 seconds will access the GAUG SURF MAIN

screen with the graphic GAUG flashing, then another 2 second press will access the

FREE SURF MAIN screen with the graphic FREE flashing.

>> NORM SURF >> GAUG SURF >> FREE SURF

• Pressing and releasing the M button momentarily (< 2 seconds) while GAUG or FREE

is displayed flashing will select that as the Operating Mode as indicated by the

graphic becoming solid.

• When one Mode graphic in the series is solid, it is the 'selected Operating Mode'.

Ensure it is that Mode that you want and will be diving in.

• Depressing the S button for 2 seconds while viewing the NORM SURF screen will

activate the VT3's Receiver and access a series of screens that will indicate the Status

of the Batteries and Pressures of the Tanks in use.

Page 27

• Each screen will be displayed for 3 seconds. VT3 Battery

Status, then TMT 1 Battery Status and Tank Pressure, then

TMT 2 Battery Status and Tank Pressure, then TMT 3 Battery

Status and Tank Pressure, then revert to SURF MAIN.

• Transmitter Battery Status is not displayed for TMT 2 and 3 if

TMT 2 - 3 USE is set for Buddy Pressure Check.

VT3 BATTERY STATUS, information includes (Fig. 18):

> Graphics VT3 and bAt > Graphic Good (or Lo) > Battery icon, if a Low Battery Warning Condition exists.

Flashing if an Alarm Condition exists.

TMTs that are active and Linked will transmit signals conveying Tank Pressure and Battery Status for display on the Status screens. If a TMT is not active or active but not Linked, the Status screen(s) will display NotAvAil (Not Available).

TRANSMITTER STATUS, information includes (Fig. 19 A/B):

> Graphics TMT1 (then TMT2 and TMT3), identifying the

reporting Transmitter, and bAt. > Graphic Good (or Lo), or NotAvAil (if not active/linked) > Battery icon, if a Low Battery Warning Condition exists.

Flashing if an Alarm Condition exists. > Tank Pressure for the TMT reporting and symbol PSI (or BAR).

Fig. 18 - VT3 Battery Good

Fig. 19A - TMT1 Battery Low

Fig. 19B - TMT3 Not Available

Page 28

GAUG and FREE

Operating Modes

are also

described in

separate sections

of this manual.

Fig. 20 - Set F (FO2)

SET MODES

Unless noted otherwise, features set apply to all Operating Modes (NORM, GAUG, and FREE. FREE Dive Mode also has several settings that do not affect NORM and GAUG Modes.

SURF MAIN > SET F > SET A > SET U > SET T > VT3 SN

Access and step through of the sequence is gained by repeated simultaneous 2 second presses of the A and S buttons.

Alarms (Set A), Utilities (Set U), and Time (Set T) Set Points can also be set/changed using the PC Settings Upload program. FO2 (Set F) entries must be made using only the push buttons.

SET F GROUP (FO2)

Set F Sequence:

SET F > FO2 GAS1 > FO2 GAS2 > FO2 GAS3 > FO2 Default.

> Depressing the A and S buttons simultaneously for 2

seconds while the NORM or GAUG SURF MAIN screen is displayed will access SET F identified by the graphic SETF (Fig. 20).

> Pressing and releasing the A button momentarily (< 2

seconds) while SET F is displayed will advance to SET FO2 GAS 1 with the Set Point flashing.

Page 29

Setting FO2 for NORM Nitrox Dives:

For each value of FO2, the Maximum Operating Depth (MOD) that can be achieved for the PO2 Alarm Set Point limit previously set, will be displayed.

When the FO2 50% DEFAULT is set ON and FO2 GAS 1 is set for a numerical value, 10 minutes on the surface after that dive, the FO2 for GAS 1 will be displayed as 50 and further dives will be calculated based on 50% O2 for oxygen calculations and 21% O2 for Nitrogen calculations (79% Nitrogen) unless the FO2 for GAS 1 is set before the dive.

FO2 for GAS 1 continues to reset to the FO2 50% DEFAULT after subsequent repetitive dives until 24 hours elapse after the last dive, or the FO2 50% DEFAULT is turned OFF in the Set FO2 50% DEFAULT ON/OFF MODE.

When the FO2 50% DEFAULT is set OFF, the VT3 will remain set at the last FO2 GAS 1 Set Points for that series of repetitive dives.

The default FO2 for GAS 1 each new dive Period is AIR.

When FO2 for GAS 1 is set for AIR, the calculations are the same as when it is set to an FO2 of 21%. When FO2 for GAS 1 is set to AIR, it remains set for AIR until it is set for a numerical FO2 value (21 to 50%).

When FO2 is set only to AIR, the O2 Bar Graph is not displayed at any time during a dive or on the surface. PO2 values and/or warnings will not be displayed during the dive.

FREE Dive nitrogen calculations are based on AIR and not affected by these FO2 Settings.

Page 30

Maximum Operating Depths affected by the PO2 limit set will not be displayed when FO2 for GAS 1 is set to AIR.

Internally, the VT3 keeps track of the oxygen loading so that if FO2 for GAS 1 is subsequently set for a numerical value, the oxygen loading for previous AIR dives will be accounted for in the next Nitrox dive (during that dive period and series of repetitive dives).

Once FO2 GAS 1 is set for a numerical value (21 to 50%) and a dive is made, the AIR option is disabled until 24 hours elapse after the last dive. The AIR option will not be displayed in Set FO2 GAS 1 until a full 24 hour Surface Interval has elapsed.

If FO2 for GAS 1 is set for 21%, it will remain set for 21% for that series of dives until set for a higher numerical value.

If the FO2 50% DEFAULT is set OFF, FO2 for GAS 2 and 3 will remain at their respective Set Points previously selected until they are changed. If the FO2 50% DEFAULT is set ON, FO2 for GAS 2 and 3 will Default to 50% after the dive.

The VT3 is programmed to prevent FO2 for GAS 2 and 3 from being set at values lower than the FO2 Set Point for GAS 1. GAS 2 and 3 can only be set to values equal to or higher than the FO2 Set Points of GAS 1 and 2, respectively.

When setting FO2 for GAS 2 and 3, the lowest values available will be the Set Point of the previous Gas set (e.g., If FO2 GAS 1 is set for 32%, FO2 for GAS 2 can only be set at values from 32 to 100%. Likewise, FO2 for GAS 3 will depend on the setting for GAS 2.

Page 31

SET FO2 GAS 1, information includes:

> Graphic GAS1 > PO2 Alarm Set Point with graphic PO2, if Nitrox > Symbol FO2 and FO2 Set Point value, flashing > Tank 1 icon representing GAS 1 > Symbol NITROX (if set for a numerical value). > Max Depth allowed for the PO2 Alarm Set (if 21 to 50%)

• Depressing and holding the S button while the Set Point is

flashing will scroll the Set Points from AIR (Fig. 21) to 21

through 50% in 1% increments, at a rate of 8 per second.

• Hint: The scroll will stop when the button is released, or

momentarily at 32% (even if the button is held depressed).

• Pressing and holding the S button will resume the scroll from

32 (Fig. 22) through 50%, then stop at AIR (or 21%).

• Pressing and releasing the S button will advance FO2 in

increments of 1% per press of the button.

• Pressing and releasing the A button momentarily (< 2

seconds) will save the setting and/or advance to SET FO2

GAS 2 with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2

seconds each) will step through the other SET F screens.

• Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert to the SET F screen.

• Depressing the M button for 2 seconds or if no button

action for 2 minutes will revert to NORM or GAUG SURF.

Fig. 21 - Set FO2 GAS 1

(AIR)

Fig. 22 - Set FO2 GAS 1

(Nitrox)

Page 32

SET FO2 GAS 2, information includes:

> Graphic GAS2 > PO2 Alarm Set Point with graphic PO2 > Symbol FO2 and FO2 Set Point value, flashing > Tank 2 icon representing GAS 2 > Symbol NITROX (if set for a numerical value). > Max Depth allowed for the PO2 Alarm Set (if 21 to 100%)

• Depressing the S button while the FO2 Set Point is flashing will scroll the Set Point

from AIR to 21 through 100% in 1% increments, at a rate of 8 per second.

• The scroll will start at the FO2 GAS 1 Set Point and stop when the button is released,

or momentarily at 50% (Fig. 23), then 80% (even if the button is held depressed).

• Depressing the S button will resume the scroll through 100%, then stop at AIR (or 21

or the GAS 1 setting).

• Pressing and releasing the S button (< 2 seconds) will advance FO2 in increments of

1% per press of the button.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting

and/or advance to SET FO2 GAS 3 with the Set Point flashing.

• Pressing and releasing the A button momentarily and repeatedly (< 2 seconds) will step through the other SET F screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET F screen.

• Depressing the M button for 2 seconds or if no button action

Fig. 23 - Set FO2 GAS 2

(50% O2)

for 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Page 33

SET FO2 GAS 3 information includes:

> Graphic GAS3 > PO2 Alarm Set Point with graphic PO2 > Symbol FO2 and FO2 Set Point value, flashing > Tank 3 icon representing GAS 3 > Symbol NITROX (if set for a numerical value). > Max Depth allowed for the PO2 Alarm Set (if 21 to 100%)

• Depressing the S button while the FO2 Set Point is flashing will scroll the Set Point

from AIR to 21 through 100% (Fig. 24) in 1% increments, at a rate of 8 per second.

• The scroll will start at the FO2 GAS 2 Set Point and stop when the button is released,

or momentarily at 50% then 80% (even if the button is held depressed).

• Depressing and holding the S button will resume the scroll through 100%, then stop at

AIR (or 21 or the GAS 2 setting).

• Pressing and releasing the S button (< 2 seconds) will advance FO2 in increments of

1% per press of the button.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting

and/or advance to SET FO2 50% DEFAULT with the Set

Point flashing.

• Pressing and releasing the A button repeatedly (< 2

seconds each) will step through the other SET F screens.

• Depressing the A and S buttons simultaneously for 2

seconds will save the setting and revert to the SET F screen.

• Depressing and holding the M button for 2 seconds or if no

button is pressed for a period of 2 minutes operation will

revert to the NORM or GAUG SURF MAIN screen.

Fig. 24 - Set FO2 GAS 3

(100% O2)

Page 34

Fig. 25 - Set FO2 Default

Fig. 26 - Set A (Alarms)

SET FO2 50% DEFAULT information includes (Fig. 25):

> Graphics DFLT and 50 > Set Point graphic OFF (or ON), flashing. > Symbols FO2 and NITROX.

• Pressing and releasing the S button (< 2 seconds) will toggle between OFF and ON.

• Pressing and releasing the A button (< 2 seconds) will save the setting and revert to the SET F screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

SET A GROUP (NORM/GAUG ALARMS)

Set A Sequence:

SET A > Audible > Depth > EDT > TLBG > DTR > Turn Pressure > End Pressure > PO2

> The SET A Group can also be set/changed using the PC

Settings Upload program.

> SET A items do not strike Alarms in FREE Dive Mode. > SET A Settings remain at the values set until changed. > Depressing the A and S buttons simultaneously for 4

seconds while NORM or GAUG SURF MAIN is displayed will access SET A identified by the graphic SETA (Fig. 26).

Page 35

> Pressing and releasing the A button momentarily (< 2 seconds) while SET A is

displayed will advance to SET AUDIBLE ALARM with the Set Point flashing.

SET AUDIBLE ALARM

This option allows the Audible Alarms and the associated red warning LED function to be disabled.

Some cautionary situations will cause the Audible Alarm to sound and the LED to flash even if this feature is set to OFF.

SET AUDIBLE ALARM information includes (Fig. 27):

> Graphic AUD > Set Point graphic ON (or OFF), flashing.

• Pressing and releasing the S button (< 2 seconds) will toggle between ON and OFF.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET DEPTH ALARM screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET A screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET A screen.

• Depressing the M button for 2 seconds or if no button action for 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Fig. 27 - Set Audible Alarm

Page 36

SET DEPTH ALARM information includes (Fig. 28):

> Graphic DPTH > Symbols MAX and FT (or M) > Set Point graphic value, flashing.

• Pressing and releasing the S button momentarily (< 2 seconds) will step through the Set Points from 30 to 330 FT (10 to 100 M) in 10 FT (1 M) increments at a rate of 1 Set Point per press of the button.

• Depressing and holding the S button will scroll through the Set Points at a rate of 4 Set Points per second until it is released.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET EDT (Elapsed Dive Time) ALARM screen with the Set Point flashing.

• Pressing and releasing the A button momentarily and repeatedly (< 2 seconds each time) will step through the other SET A screens.

• Pressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET A screen.

• Depressing and holding the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Fig. 28 - Set Depth Alarm

FREE Mode has separate Depth Alarms.

Page 37

SET EDT (ELAPSED DIVE TIME) ALARM

Information includes (Fig. 29):

> Graphic EDT > Symbols DIVE and TIME. > Set Point value (hr:min), flashing.

• Pressing and releasing the S button momentarily (< 2 seconds) will increase the Set Point from 0:10 to 3:00 (hours:minutes) in 5 minute (:05) increments.

• Depressing the S button will scroll through the Set Points at a rate of 4 Set Points per second until it is released.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET TLBG (Tissue Loading Bar Graph) ALARM screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET A screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET A screen.

• Depressing he M button for 2 seconds or if no button is pressed for 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

FREE Mode has a separate EDT Alarm.

Fig. 29 - Set EDT Alarm

Page 38

Setting the TLBG Alarm to activate before the VT3 enters DECO is highly recommended.

Fig. 30 - Set TLBG Alarm

SET TLBG (TISSUE LOADING BAR GRAPH) ALARM

Information includes (Fig. 30):

> Graphic TLBG > TLBG Set Point (segments), flashing.

• Pressing and releasing the S button momentarily (< 2 seconds) will decrease the Set Point from All 8 segments (Deco) to 1 in decrements of 1 segment.

• Depressing the S button will scroll through the Set Points at a rate of 4 Set Points per second until it is released.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET DTR (Dive Time Remaining) ALARM screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET A screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET A screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

FREE Mode has a separate TLBG Alarm.

Page 39

SET DTR (DIVE TIME REMAINING) ALARM

Information includes (Fig. 31):

> Graphic DTR > Symbols AIR, TIME, NDC, and O2. > Set Point value, flashing.

• Pressing and releasing the S button momentarily (< 2 seconds) will increase the Set Point from 0:00 to 0:20 (:minutes) in 1 minute (0:01) increments.

• Depressing the S button will scroll through the Set Points at a rate of 4 Set Points per second until it is released.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET TURN PRESSURE ALARM screen with the Set Point flashing.

• Pressing and releasing the A button momentarily and repeatedly (< 2 seconds each) will step through the other SET A screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert o the SET A screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Whichever Time (No Decompression, O2, or Air Time Remaining) decreases to the Alarm Set Point will activate the Alarm.

Fig. 31 - Set DTR Alarm

Page 40

Fig. 32 - Set Turn Alarm

SET TURN PRESSURE ALARM (for Transmitter 1 only)

Information includes (Fig. 32):

> Graphic TURN > Set Point OFF or a numeric value, flashing. > Symbol PSI (or M)

• Pressing and releasing the S button momentarily (< 2 seconds) will step through the Set Points from OFF to 1000 to 3000 PSI (70 to 205 BAR) in 250 PSI (5 BAR) increments.

• Depressing the S button will scroll through the Set Points at a rate of 4 Set Points per second until it is released.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET END PRESSURE ALARM screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET A screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET A screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Page 41

SET END PRESSURE ALARM information includes (Fig. 33):

> Graphic END > Set Point numeric value, flashing. > Symbol PSI (or M)

• Pressing and releasing the S button momentarily (< 2 seconds) will increase the Set Point from 300 to 1500 PSI (20 to 105 BAR) in 100 PSI (5 BAR) increments.

• Depressing the S button will scroll through the Set Points at a rate of 4 Set Points per second until it is released.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET PO2 ALARM screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET A screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET A screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

The END PRESSURE Alarm will activate when Pressure in the Tank (TMT 1, 2 , or

3) being used at the time decreases to the Alarm Set Point.

Fig. 33 - Set End Alarm

Page 42

Setting the PO2 Alarm to activate before reaching the Max allowed limit of

1.60 ATA is highly recommended.

Fig. 34 - Set PO2 Alarm

SET PO2 ALARM information includes (Fig. 34):

> Graphics PO2 and AtA > Set Point value, flashing. > Symbol MAX

• Pressing and releasing the S button momentarily (< 2 seconds) will increase the Set Point from 1.20 (ATA) to 1.60 (ATA) in .10 (ATA) increments.

• Depressing the S button will scroll through the Set Points at a rate of 4 Set Points per second until it is released.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET A screen.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET A screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Page 43

SET U GROUP (UTILITIES)

Set U Sequence:

SET U > Wet Activation > Units > Safety Stop > Conservative Factor > Backlight Duration > Sampling Rate > TMT 1 > TMT 2-3 USE > TMT 2 (or BUD 1) > TMT 3 (or BUD 2).

> The SET U Group can also be set/changed using the PC

Settings Upload program. > SET U Settings remain at the values set until changed. > FREE Mode utilizes these settings for Wet Activation, Units,

and Backlight Duration. It has a separate Sampling Rate

fixed at a 1 second interval not affected by the SET U

setting.

> Depressing the A and S buttons simultaneously for 6

seconds while the NORM or GAUG SURF MAIN screen is

displayed, will access SET U identified by the graphic SETU

(Fig. 35). > Pressing and releasing the A button momentarily (< 2

seconds) while SET U is displayed will advance to SET WET

ACTIVATION with the Set Point flashing.

TMT is the abbreviation used for Transmitter.

BUD is the abbreviation used for Buddy.

Fig. 35 - SET U (Utilities)

Page 44

Fig. 36 - Set Wet Activation

SET WET ACTIVATION information includes (Fig. 36):

> Graphic WET > Set Point graphic ON (or OFF) flashing.

• Pressing and releasing the S button will toggle between ON and OFF.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET UNITS screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET U screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET U screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

HINT: To change this setting while operating in FREE Mode, first access the NORM SURF Mode.

Page 45

SET UNITS information includes (Fig. 37):

> Graphic UNIT > Set Point symbols/graphics PSI, F, and FT (or BAR, C, and

M), flashing.

• Pressing and releasing the S button will toggle between Imperial (F, FT, PSI) and Metric (C, M, BAR).

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET SAFETY STOP screen with the Time Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET U screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET U screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

HINT: To change this setting while operating in FREE Mode, first access the NORM SURF Mode.

Fig. 37 - Set Units

Page 46

SET NORM SAFETY STOP information includes (Fig. 38):

> Graphic SAFE > Symbols STOP and TIME. > Safety Stop Time Set Point, flashing. > Safety Stop Depth Set Point and symbol FT (or M).

• Pressing and releasing the S button momentarily (< 2 seconds each) will step through the Stop Time Set Points of OFF, 3:00, and 5:00 (minutes:seconds).

• Pressing and releasing the A button momentarily (< 2 seconds) will save the Stop Time setting and the Stop Depth Set Point will flash, or if Stop Time is set OFF advance to the SET CONS (Conservative Factor) screen with the Set Point flashing.

• Pressing and releasing the S button momentarily (< 2 seconds each) will step through the Stop Depth Set Points of 10, 15, and 20 FT (or 3, 4, 5, and 6 M).

• Pressing and releasing the A button momentarily (< 2 seconds) will save the Safety Stop settings and/or advance to the SET CONS screen with the Set Point flashing.

• Pressing the A button repeatedly (< 2 seconds) will step through the other SET U screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the settings and revert to the SET U screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

Fig. 38 - Set Safety Stop

Page 47

SET CONSERVATIVE FACTOR information includes (Fig. 39):

> Graphic CONS > Set Point ON (or OFF), flashing. > Symbols TIME and NDC.

• Pressing and releasing the S button (< 2 seconds) will toggle between ON and OFF.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET BACKLIGHT DURATION screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET U screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET U screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

NOTE: When the Conservative Factor is set ON, the No Decompression Limit dive times are reduced to values equivalent to those that would be available at the next higher 3000 foot (915 meter) Altitude. Refer to the tables on Pages 150/151.

Fig. 39 - Set Conservative

Factor

Page 48

Fig. 40 - Set Backlight

Duration

SET BACKLIGHT DURATION information includes (Fig. 40):

> Graphic GLO. > Symbol TIME. > Set Point, flashing.

• Pressing and releasing the S button momentarily (< 2 seconds each) will step through the Set Points of :00, :05, and :10 (seconds).

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET SAMPLING RATE screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the SET U screens.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET U screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

HINT: To change the Backlight Duration while

operating in FREE Mode, first access the NORM SURF Mode.

Page 49

SET SAMPLING RATE information includes (Fig. 41):

> Graphic SAMP > Symbol TIME. > Set Point, flashing.

• Pressing and releasing the S button momentarily (< 2 seconds) will step through the Set Points of :02, :15, :30, :60 (seconds).

• Depressing the S button will scroll through the Set Points at a rate of 4 Set Points per second until it is released.

• Pressing and releasing the A button momentarily (< 2 seconds) will save the setting and/or advance to the SET TMT 1 screen with the Set Point flashing.

• Pressing and releasing the A button repeatedly (< 2 seconds each) will step through the other SET U screens.

• Depressing the A and S buttons simultaneously for 2 seconds shall save the setting and revert to the SET U screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

NOTE: FREE Mode has a separate fixed Sampling Rate of 1 second.

SAMPLING RATE is the frequency (time interval) at which data is sampled and stored in memory for subsequent download to the PC OceanLog program.

Fig. 41 - Set Sampling Rate

Page 50

TMT is the abbreviation for Transmitter.

Fig. 42 - Set TMT 1

SET TMT 1 information includes (Fig. 42):

> Graphics TMT1 and ON (or OFF) flashing. > Set Point (Transmitter's Serial Number (Link Code).

• Pressing and releasing the S button momentarily (< 2 seconds) will toggle between ON and OFF.

• Pressing and releasing the A button momentarily (< 2 seconds) will accept the ON/OFF selection.

• If OFF is selected, SET TMT 2-3 USE , SET TMT 2 (or BUD

1), and TMT 3 (or BUD 2) will be bypassed and operation will revert to the SET U screen.

• If ON is selected, the first (left) digit of the Code will flash.

• Pressing and releasing the S button repeatedly (< 2 seconds each) will increase the First Digit from 0 to 9 in increments of 1.

• Depressing the S button will scroll through the Set Points at a rate of 4 per second.

• Pressing and releasing the A button (< 2 seconds) will accept the First Digit of the Code and/or advance to the Second Digit which will be flashing.

• Pressing and releasing the S button will increase the Second Digit from 0 to 9 in increments of 1.

• Depressing the S button will scroll through the Set Points at a rate of 4 per second.

Page 51

• Pressing and releasing the A button (< 2 seconds) will accept the Second Digit of the Code and/or advance to the Third Digit which will be flashing.

• Pressing and releasing the S button repeatedly (< 2 seconds each) will increase the Third Digit from 0 to 9 in increments of 1.

• Depressing the S button will scroll through the Set Points at a rate of 4 per second.

• Pressing and releasing the A button (< 2 seconds) will accept the Third Digit of the Code and/or advance to the Fourth Digit which will be flashing.

• Pressing and releasing the S button repeatedly (< 2 seconds each) will increase the Fourth Digit from 0 to 9 in increments of 1.

• Depressing the S button will scroll through the Set Points at a rate of 4 per second.

• Pressing and releasing the A button (< 2 seconds) will accept the Fourth Digit of the Code and/or advance to the Fifth Digit which will be flashing.

• Pressing and releasing the S button repeatedly (< 2 seconds each) will increase the Fifth Digit from 0 to 9 in increments of 1.

• Depressing the S button will scroll through the Set Points at a rate of 4 per second.

• Pressing and releasing the A button will accept the Fifth Digit of the Code and/or advance to the Sixth Digit which will be flashing.

• Pressing and releasing the S button repeatedly (< 2 seconds each) will increase the Sixth Digit from 0 to 9 in increments of 1.

• Depressing the S button will scroll through the Set Points at a rate of 4 per second.

• Pressing and releasing the A button (< 2 seconds) will accept the TMT 1 Link Code and/or advance to SET TMT 2-3 USE with the Set Point flashing.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert back to the SET U screen.

Page 52

Fig. 43 - Set TMT 2-3 Use

SET TMT 2-3 USE information includes (Fig. 43):

> Graphics TMT and 2-3 USE. > Set Point graphic SELF (or bud) flashing.

• Pressing and releasing the S button momentarily (< 2 seconds) will toggle between SELF and bud.

• Pressing and releasing the A button momentarily (< 2 seconds) will accept the setting and/or advance to SET TMT 2 (or BUD 1) with ON or OFF flashing.

• Depressing the A and S buttons simultaneously for 2 seconds will save the setting and revert to the SET U screen.

• Depressing the M button for 2 seconds or if no button is pressed for a period of 2 minutes operation will revert to the NORM or GAUG SURF MAIN screen.

When set for SELF, TMT 2 and TMT 3 are associated with Transmitters to be used by the diver using the VT3 for Gas Switching.

When set for BUD, TMT 1 is associated with the user of the VT3 and TMT 2 and TMT 3 are associated with Transmitters to be used by other divers (Buddies) whose Pressure can be checked by the user of the VT3.

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SET TMT 2 (or BUD 1) information includes (Fig. 44):

> Graphics TMT2 (or BUD1) and ON (or OFF) flashing. > Set Point (Transmitter's Serial Number (Link Code).

• Pressing and releasing the S button momentarily (< 2 seconds) will toggle between ON and OFF.

• Pressing and releasing the A button momentarily (< 2 seconds) will accept the ON/OFF selection.

• If OFF is selected, SET TMT 3 (or BUD 2) will be bypassed and the operation will revert to the SET U screen.

• If ON is selected, the first (left) digit of the Code will flash.

• Pressing and releasing the S button repeatedly (< 2 seconds each) will increase the First Digit from 0 to 9 in increments of 1.

• Depressing the S button will scroll through the Set Points at a rate of 4 per second.

• Pressing and releasing the A button (< 2 seconds) will accept the First Digit of the Code and/or advance to the Second Digit which will be flashing.

• Pressing and releasing the S button will increase the Second Digit from 0 to 9 in increments of 1.

• Depressing the S button will scroll through the Set Points at a rate of 4 per second.

• Pressing and releasing the A button (< 2 seconds) will accept the Second Digit of the Code and/or advance to the Third Digit which will be flashing.

If TMT 2-3 USE is set for

SELF (Gas Switching)

- OR -

If TMT 2-3 USE is set for

Buddy Pressure Check

Fig. 44 - Set TMT 2 or BUD 1

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