Oceanic VT 4.0 Operating Manual

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VT 4.0 OPERATING MANUAL

VT 4.0

DIVE COMPUTER

OPERATING MANUAL

Doc. No. 12-5213-r02 (9/6/11)

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Page 1: Dive Computer
VT 4.0 OPERATING MANUAL VT 4.0 DIVE COMPUTER OPERATING MANUAL © 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
Page 2: Table Of Contents
VT 4.0 OPERATING MANUAL CONTENTS NOTICES....................3 GAS/TMT.SWITCHING................31 OVERVIEW..................32 FEATURES.AND.FUNCTIONS..............4 NORM.GAS.SWITCH.MENU............32 DISPLAY.ICONS................5 GAUG.TMT.SWITCH.MENU............32 ABBREVIATIONS/TERMS..............5 OVERVIEW..................6 GAUG.OP.MODE.................34 ACTIVATION..................6 GAUG.SURFACE.MAIN.AND.ALTS..........35 MENU.SYSTEM.................6 GAUG.MENU...................35 AUDIBLE.ALARM................7 GAUG.Set.Groups..............36 PC.INTERFACE.................7 GAUG.DIVE.MODE.................38 POWER.SUPPLY................8 Main.and.ALTs................38...
Page 3: Notices
DECOMPRESSION MODEL The programs within the VT 4.0 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.
Page 4: Features.and.functions
VT 4.0 OPERATING MANUAL FEATURES/FUNCTIONS © 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
Page 5: Display.icons
VT 4.0 OPERATING MANUAL DISPLAY ICONS value is Algorithm Time Depth id Battery Surface Interval Conservative is On FO2 is set for Nitrox Dot Matrix value is FO2 Air Time Remaining TMT Link Total Ascent Time time is Minutes Press...
Page 6: Overview
ACTIVATION Diagnostic Check To activate the VT 4.0, press/release any button. (for 3 sec, then My Info) • The unit will enter Diagnostic Mode displaying all segments of the LCD as 8's, followed by dashes ( - - ), then a countdown from 9 to 0.
Page 7: Audible.alarm
• FREE mode alarms. PC INTERFACE Interface with a PC, to allow uploading settings and downloading data, is accomplished by connecting the VT 4.0 to a PC USB Port using the special USB Interface Cable. The software program together with the USB Driver required is on the Oceanlog CD, and can be downloaded from the OceanicWorldwide web site. The program's HELP** serves as the user manual which can be printed for personal use.
Page 8: Power.supply
• A (< 2 sec), repeat until icon ( > ) is next to BATT/TMT. • S (< 2 sec) activates Receiver, then VT 4.0 Status screen appears for 3 sec (Fig. 1), then each active TMT's Status screen for Fig.
Page 9: Operating.modes
VT 4.0 OPERATING MANUAL OPERATING MODES NORM Mode >> for Air and Nitrox SCUBA activity with up to 4 Gases/4 TMTs. GAUG Mode >> for SCUBA activity with up to 4 TMTs. FREE Mode >> for breath hold diving activity with Depth/Time indication.
Page 11: Norm.surf.main.and.alts
VT 4.0 OPERATING MANUAL NORM SURF MAIN, information includes (Fig. 6A/B): > SI (hr:min) with Time (clock) and SURF icons; if no dive yet, this is time since activation. > Graphic NORM (operating mode). > Graphic DIVE and number of dives completed during that operating period, up to 24 (0 if no dive made yet).
Page 12: Norm.main.menu
VT 4.0 OPERATING MANUAL FLY/DESAT FLY Time is a count down timer that begins counting down 10 minutes after surfacing from a dive from 23:50 to 0:00 (hr:min). DESAT Time, also a count down timer, provides calculated time for tissue desaturation at sea level taking into consideration the Algorithm used and the Conservation Factor setting.
Page 13: Norm/Gaug.set.menu
VT 4.0 OPERATING MANUAL Log Data 1, information includes (Fig. 13): > Log (book) icon, and Nx and (PZ+) icons if they apply. > Pre dive Surface Interval (hr:min) with Time (clock) and SURF icons, - : - - if # 1 (no previous dive that period).
Page 14: Norm/Gaug.history.mode
> Graphic LCD with 01 (or higher), indicating the Display's revision number. Fig. 20 - VT 4.0 ID *This number will change if Firmware is updated by factory service or by future download of revised firmware from the Oceanic web site. • S (< 2 sec) to revert to Main Menu.
Page 15: Norm.dive.preview
VT 4.0 OPERATING MANUAL NORM DIVE PREVIEW This feature provides quick access to a screen that displays up to 4 settings that can be pre selected* using the Set P Menu. Preview, information includes (Fig. 22): > Graphics Nor and PREV.
Page 16: Set.a.(Alarms).Menu
VT 4.0 OPERATING MANUAL SET A (Alarms) Menu, information includes (Fig. 24A/B): > Graphics SEt A and MENU. Selections with their last Set Points saved include: > AUD with Set Point (ON or OFF), audible . > DEPTH with Set Point (OFF, or 30 to 330 FT, or 10 to 100 M), increments of 10 FT (3 M).
Page 17: Set.t.(Time/Date).Menu
• S (< 2 sec) to save the setting. Fig. 28 - SET TMT 1 > If TMT 1 OFF is selected (saved), the VT 4.0’s Receiver will be disabled, all other TMT Set selections will display the (changing the setting) graphics OFF, and operation reverts to the Set U Menu.
Page 18: Set.s.(Shortcut).Menu
VT 4.0 OPERATING MANUAL SET S (Shortcut) Menu, information includes (Fig. 33): > Graphics SEt S and MENU. One item can be selected from the following menu list. That item (referred to as a Shortcut) can then be accessed directly by pressing M (2 sec) while viewing the Surface Main.
Page 20: Transmitter.signal.reception.guide
The VT 4.0 cannot effectively receive a signal when it is held out to the sides of the TMT or held at distances greater than 4 feet (1.2 meters) in front of the TMT. Best reception is achieved when the VT 4.0 is within less than 4 feet (1.2 meter) of the TMT.
Page 21: Wet.activation
The contacts are the metal pins of the PC Interface Data Port and the stems of the buttons. When Wet Activation is set OFF, the VT 4.0 will not enter Dive Mode unless it is first activated by push button and operating in a surface mode or it is a repetitive dive.
Page 22: Deep.stop
DIVE TIME REMAINING (DTR) The VT 4.0 constantly monitors nitrogen loading and oxygen accumulation, and will display whichever time is the least amount available as DTR on the No Deco Dive Main screen (Fig. 40). The graphic NDC, or OTR, will identify which time is being displayed.
Page 23: Air.time.remaining.(Atr)
You should initiate a controlled Ascent while monitoring Tank Pressure. However, there is no reason to panic, the VT 4.0 has allowed for the Air necessary for a safe Ascent including the No Deco Deep and Safety Stops, if set On, and any Deco Stops required.
Page 25: No.deco.main.and.alts
VT 4.0 OPERATING MANUAL NO DECO MAIN, information includes** (Fig. 44) - **Which information is displayed is determined by the SET D menu selection saved during setup on the surface prior to the dive. > Current Depth with FT (or M) icon.
Page 26: Deep.stop.(Ds)
VT 4.0 OPERATING MANUAL Deep Stop Preview, information includes (Fig. 48) - > Current Depth with FT (or M) icon. > Graphic DEEP STOP with Stop icon (arrows and bar). > Stop Depth with graphic FT (or M) and countdown Time as 2:00 (min:sec).
Page 27: Decompression
VT 4.0 OPERATING MANUAL DECOMPRESSION Decompression mode activates when theoretical No Decompression time and depth limits are exceeded. Upon entry into Deco, the Audible will sound during which the alarm LED and full TLBG will flash. Two Up Arrows will also flash (Fig.
Page 28: Violation.modes
TLBG will also flash, and Current Depth and Max Depth will only indicate 3 dashes ( - - - ). **MOD is the Max Operating Depth at which the VT 4.0 can accurately perform calculations and display data.
Page 29: High.po2
Operation would then continue in VGM during the remainder of that dive and for 24 hours after surfacing. VGM turns the VT 4.0 into a digital instrument without any decompression or oxygen related calculations or displays. Upon activation of VGM, the Audible will sound during which the alarm LED and full TLBG* will flash. The graphic VIOLATION Fig.
Page 30: High.o2
VT 4.0 OPERATING MANUAL HIGH O2 Warning >> at 80 to 99% (240 OTU). Alarm >> at 100% (300 OTU). When O2 reaches the Warning level; the Audible will sound during which the O2 value with graphic %O2SAT and an Up Arrow will flash (in place of DTR) until the audible is silenced (Fig.
Page 32: Overview
VT 4.0 OPERATING MANUAL OVERVIEW > Can only switch when a Dive Main screen is displayed. > Cannot Switch Gas or TMTs on surface. > Cannot Switch Gas or TMTs during sounding of alarms. > All NORM dives begin with Gas 1 and default to Gas 1 after 10 minutes on the surface.
Page 33 VT 4.0 OPERATING MANUAL GAUG SURFACE Shortcut 2 sec Compass SURF. 2 sec MAIN ALTs < 2 sec Backlight < 2 sec (Smartglo) < 2 sec 2 sec Menu access > selection < 2 sec SET.MENU < 2 sec OP.MODE HISTORY VT.4.0.ID...
Page 35: Gaug.surface.main.and.alts
VT 4.0 OPERATING MANUAL GAUG SURF MAIN, information includes (Fig. 80): > SI (hr:min) with Time (clock) and SURF icons; if no dive yet, this is time since activation. > Graphic GAUG (operating mode). > Graphic DIVE and number of dives completed during that operating period, up to 24 (0 if no dive made yet).
Page 36: Gaug.set.groups
VT 4.0 OPERATING MANUAL HISTORY, shared with NORM (see page 14). VT 4.0 ID, same as NORM (see page 14). BATT/TMT STATUS, same as NORM (see page 14). DIVE PREVIEW This feature provides quick access to a screen that displays up to 4 settings that can be pre selected* using the Set P Menu.
Page 37: Gaug.dive.mode
VT 4.0 OPERATING MANUAL SET P (Preview) Menu, information includes (Fig. 88): > Graphics SEt P and MENU. Using this menu, you can chose up to 4 items (Set Points that have been entered) for display on a Preview screen that can be accessed from the Surface Main Menu.
Page 38: Main.and.alts
VT 4.0 OPERATING MANUAL GAUG DIVE MAIN, information** includes (Fig. 90A/B) - **Which information is displayed on the Main screen and which is on the Alternates is determined by the SET D menu selection saved during setup on the surface prior to the dive.
Page 40: Free.surface.main.and.alts
VT 4.0 OPERATING MANUAL FREE SURF MAIN, information includes (Fig. 93): > SI (min:sec up to 59:59, then hr:min) with Time (clock) and SURF icons. > Graphic FREE (operating mode). > Graphic DIVE and number of dives completed during that operating period, up to 99 (0 if no dive made yet).
Page 41: Free.set.groups
VT 4.0 OPERATING MANUAL The CDT will run in the background, while on the surface and during dives, until it counts down to 0:00, or it is turned OFF. When a set CDT reaches 0:00, the Audible will sound during which the graphic CDT will be displayed with 0:00 flashing on the Surface or Dive Main (Fig.
Page 42: Main.and.alts
VT 4.0 OPERATING MANUAL FREE DIVE MAIN, information includes (Fig. 105) - > (PZ+) icon, if algorithm selected. > Current Depth with FT (or M) icon. > Graphic NDC with Time Remaining (min), dashes ( - - ) if on the surface.
Page 43: Free.dive.mode
No Deco Dive Time Remaining (NDC Time) are carried over from one operating mode to the other, which permits the user to maintain awareness of nitrogen absorption and offgasing status. The mathematical models currently used in the VT 4.0 are based on no decompression/decompression multilevel repetitive dive schedules.
Page 45: Compass.mode
(press S to extend time) WARNING: You must become thoroughly familiar with setup and operation of the VT 4.0 Digital Compass before using it as your primary device for navigation. Failure to do so could result in serious errors relating to activities involving navigation.
Page 46: Overview
VT 4.0 OPERATING MANUAL OVERVIEW > S (2 sec) to access Compass OP Main from Surface or Dive Main. > S (2 sec) or no button action (2 min*) to revert to Surface or Dive Main. *During the final 15 seconds, the remaining On time is displayed. If a button is pressed during that time, the 2 minute On time will reset allowing operation to remain in Compass Mode.
Page 47: Calibration
VT 4.0 OPERATING MANUAL > If SET HEADING, display REF OP Main with the Heading flashing allowing it to be set. > If REVERSE HEADING, select it as the OP Mode with new Heading (180° opposite of Reference Heading set).
Page 48: Declination
VT 4.0 OPERATING MANUAL DECLINATION Magnetic Declination is taken from numbers provided on maps or charts that apply to a specific location. The numbers represent the easterly or westerly angular difference (Declination) in degrees between magnetic North and true (geometric or polar) North.
Page 49: Reference
CAUTION: When the procedure provided in this section is used to change the VT 4.0 Battery, you must be sure that the case o-ring is not pinched and that the VT 4.0 is water tight before conducting diving actvities. Pre dive pressure testing by an Authorized Oceanic facility is highly recommended.
Page 50: Pc.interface
VT 4.0 OPERATING MANUAL PC INTERFACE The VT 4.0 is configured with a Data Port (Fig. 130a) that enables it to be connected to a PC through a USB port using a special Interface Cable supplied or available as an optional accessory.
Page 51: Care.and.cleaning
Instrument Lens Protector. Small scratches will naturally disappear underwater. • Soak and rinse the VT 4.0 in fresh water at the end of each day of diving, and check to ensure that the areas around the low pressure (depth) sensor (Fig. 133a), PC interface data port (Fig. 133b), and buttons are free of debris or obstructions.
Page 52 • Orient the Retaining Bar across the lower portion of the Battery (Fig. 136a) and carefully push it down into position. • Replace the Cover O-ring with a new one which must be a genuine Oceanic part that can be purchased from an Authorized Oceanic Dealer.
Page 53: Transmitter.battery.replacement
• Attach the regulator First Stage to a full scuba tank and pressurize by slowly opening the tank valve, listening for any indication of air leaking around the fitting. • If air leakage is present, DO NOT use, take the complete regulator assembly to an Authorized Oceanic Dealer for inspection Fig. 144 - TRANSMITTER and service.
Page 54: Altitude.sensing.and.adjustment
If the VT 4.0 Resets (i.e.; is On, turns Off, then turns On again) for any reason during any dive, Nitrogen, O2, and ATR calcula- tions are terminated (upon turning Off). Upon turning On, the graphic ERROR and the UP Arrow icons appear solid, and Current Depth is displayed (Fig.
Page 56: Pz+.Algorithm.ndl.chart
VT 4.0 OPERATING MANUAL PZ+ ALGORITHM >> NDLS (minutes) at ALTITUDE (Imperial) Altitude 3001 4001 5001 6001 7001 8001 9001 10001 11001 12001 13001 (feet) 3000 4000 5000 6000 7000 8000 9000 10000 11000 12000 13000 14000 Depth ( FT ) 30...
Page 57: Specifications
> Pressure < 50 PSI (3.5 BAR) TMT.Compatibility.with.Nitrox • When packaged and shipped from the factory, Oceanic Transmitters are rated for use with compressed Air and Nitrox mixtures containing up to 99% O2 by volume and with 100% O2. OPERATIONAL.PERFORMANCE Function: Accuracy: •...
Page 58: Fcc.compliance
• 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. © 2002 Design, 2011...
Page 59: Inspection/Service.record
Transmitter 3 Serial Number: ___________________________________________________________________________________________________ Transmitter 4 Serial Number: ___________________________________________________________________________________________________ Date of Purchase: ___________________________________________________________________________________________________ Purchased from: ___________________________________________________________________________________________________ Below to be filled in by an Authorized Oceanic Dealer: Date Service Performed Dealer/Technician OCEANIC.WORLD.WIDE OCEANIC USA 2002 Davis Street San Leandro, CA 94577...

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