Oceanic VT 4.0 User manual
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VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
VT 4.0
DIVE COMPUTER
OPERATING MANUAL
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VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
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VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
NOTICES
COPYRIGHT NOTICE
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.
VT 4.0 Operating Manual, Doc. No. 12-5213
© 2002 Design, 2011
San Leandro, CA USA 94577
TRADEMARK, TRADE NAME, AND SERVICE MARK NOTICE
Oceanic, the Oceanic logo type, VT 4.0, the VT 4.0 logo, Air Time Remaining (ATR), Diver Replaceable Batteries, Graphic Diver Interface, Tissue Loading Bar Graph (TLBG), Pre Dive Planning Sequence
(PDPS), 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:
Dive Computer with Free Dive Mode and/or Wireless Data Transmission (U.S. Patent no. 7,797,124), 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). Other patents pending. User Setable Display (U.S. Patent no. 5,845,235) is owned by Suunto Oy (Finland).
LIMITED TWO-YEAR WARRANTY
For details, refer to the Product Warranty Registration Card provided. Register on-line at www.OceanicWorldwide.com
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.
The VT 4.0 dive computer model is based upon the latest research and experiments in decompression theory. Still, using the VT 4.0, 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.
Welcome
to
OCEANIC
and
THANK YOU
for choosing the
VT 4.0
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VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
FEATURES/FUNCTIONS
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DISPLAY ICONS
FO2 is set
for Nitrox
Conservative
is On
Log
Depth id
Temp or
Heading
Press
id
Low
Battery
value is FO2
TMT Link
Dot Matrix
Air Time Remaining
Total Ascent Time
time is Minutes
Surface Interval
value is
Time
Algorithm
set
value is PO2
ABBREVIATIONS/TERMS
ACTIV = Activation
AL = Alarm
ALT = Alternate
ATR = Air Time Remaining
AUD = Audible
AVAIL = Available
BATT = Battery
CAL = Calibrate (compass)
CDT (CD) = Countdown Timer
CONSERV = Conservative Factor
DD = Descending Depth (alarm)
DECO = Decompression
DESAT = Desaturation Time
DFLT = Default
DSAT = Algorithm type
DTR = Dive Time Remaining
DURA = Duration (backlight)
E = East (compass)
EDT = Elapsed Dive Time
EL = Elevation (altitude)
FO2 = Fraction of Oxygen (%)
FORM = Format (date, time)
FREE = Free Dive Mode
FT = Feet (depth)
GAUG = Digital Gauge Dive Mode
GLO = Glow (backlight)
HIST = History
LO = Low (battery)
M = Meters (depth)
MIN = Minutes (time)
N = North (compass)
NDC = No Deco DTR
NDL = No Deco Limit
NE = Northeast (compass)
NO = Number
NO-D = No Decompression
NORM = Normal Dive Mode
NW = Northwest (compass)
O2 = Oxygen
OTR = O2 DTR
PO2 = Partial Pressure of O2 (ATA)
PRESS = Pressure
PZ+ = Algorithm type
REF = Reference (compass)
S = South (compass)
SAFE = Safety (stop)
SE = Southeast (compass)
SEC = Seconds (time)
SN = Serial Number
SURF = Surface
SW = Southwest (compass)
SWCH = Switch (gas)
TAT = Total Ascent Time (deco)
TLBG = Tissue Loading Bar Graph
TMR = Timer
TMT = Transmitter
VIOL = Violation
W = West (compass)
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VT 4.0 OPERATING MANUAL
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INTERACTIVE CONTROL CONSOLE
The Interactive Control Console utilizes 3 control buttons that are referred to as M, A, and S.
• M (left front) - Menu, Mode, Minus (decrease)
• A (right front) - Advance, Add (increase).
• S (right side) - Select, Save.
ACTIVATION
To activate the VT 4.0, press/release any button.
• 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. It checks the display and voltage to ensure that everything is within tolerance.
• It will also check ambient barometric pressure, and calibrate present depth as 0. When at 3001 feet (916 meters), or
higher, it will adjust depth for the higher altitude.
• After the Diagnostic check, a MY INFO screen will be displayed for 10 sec showing a default message, or information that
you enter using the PC interface system.
• The NORM Surface Main screen will then be displayed, allowing access to all surface functions.
• If no dive is made within 2 hours, the unit will shut Off.
Also see PSM on page 9.
Contacts located on the stems of the buttons and pins of the PC Data Port will automatically activate the unit and cause it
to enter dive mode when the contacts become wet and it senses depth of 5 FT (1.5 M). They will not inadvertently activate
Surface Mode such as when in a wet gear bag.
MENU SYSTEM
The Dot Matrix located in the middle of the LCD viewing area is used to display alpha numeric messages and measured values
as well as Menu type systems for selection of settings and various auxiliary functions. It also serves as the Digital Compass which
can be accessed while viewing Main screens.
There are multiple Menus such as -
• NORM Main Menu
• GAUG Main Menu
• FREE Main Menu
• Compass Menu
• Compass Reference Menu
• Set FO2 Menu
• Set Alarms Menu
• Set Utilities Menu
• Set Time Menu
• Set Shortcut Menu
• Set Dive Display Menu
• Set Preview Menu
• Gas/Transmitter Switch Menu
Upon entering a Menu, movement through it starts at the first (top) selection, then continues in a rolling manner down the screen
showing selections in groups of up to 4 items.
Menu button operations >>
M (< 2 sec) - to access Menu.
A (< 2 sec) - to step down the screen (forward) through Menu selections.
M (< 2 sec) - to step up the screen (backward) through Menu selections.
S (< 2 sec) - to access the item indicated by Arrow icon ( > ).
S (2 sec) - to step back to a previous item or from a selected item to the Menu.
S (2 sec) - to step back from a Main Menu to a Surface Main.
M (2 sec) anytime, or no button action for 2 minutes - will revert to Surface Main.
• Right Arrow icon ( > ) at the left indicates that the item can be selected.
• Down Arrow icon ( v ) at the right indicates that additional items are available below (after) those shown.
• Up Arrow icon ( ^ ) at the right indicates that additional items are available above (before) those shown.
OVERVIEW
MA
S
Default Message
(for 10 sec, then SURF Main)
Diagnostic Check
(for 3 sec, then My Info)
Sample Menu
This item can
be selected
(accessed).
There are more
items above.
There are more
items below.
M A
S
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AUDIBLE ALARM
While operating in NORM or GAUG Mode the Audible will emit 1 beep per second for 10 seconds when alarms strike, unless it is set Off. During that
time, the Audible can be acknowledged and silenced by pressing the S button (less than 2 seconds).
An LED Warning Light, on the housing, is synchronized with the Audible and flashes as the Audible sounds. It will turn Off when the Alarm is silenced. The
Audible and LED will not be active if the Audible is set OFF (a group A setting).
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.
Alarms that strike during operations in Compass Mode are described on page 48.
Situations that will activate the NORM/GAUG 10 second Alarm include -
** Items apply only in NORM mode.
• Air Time Remaining (ATR) at 5 minutes, then again at 0 minutes.
• Turn Pressure at the Set Point selected (Transmitter 1 only).
• End Pressure at the Set Point selected (active Transmitter).
• Descent deeper than the Depth Alarm Set Point selected.
• Dive Time Remaining at the Set Point selected**.
• Elapsed Dive Time at the Set Point selected.
• PO2 level at .20 < Set Point and again at the Set Point selected**.
• O2 accumulation at 240 OTU (80%), then again at 300 OTU (100%)**.
• TLBG at the Set Point selected**.
• 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 < 5 minutes)**.
• Delayed Violation (above a required Deco Stop Depth => 5 minutes)**.
• Delayed Violation (a Deco Stop Depth > 60 FT/18 M is required)**.
• Delayed Violation (Depth > 330 FT/100 M in NORM, > 400 FT/120 M in GAUG).
• A Gas Switch would expose the diver to PO2 => 1.60 ATA**.
A single short beep (which cannot be disabled) sounds when -
• After 5 minutes on the surface after the Violation dive.
3 short beeps (which cannot be disabled) sound when -
• Ascent Rate is 51 to 60 FPM (15.1 to 18 MPM) when deeper than 60 FT (18 M), or 26 to 30 FPM (7.5 to 9 MPM) at 60 FT (18 M) and shallower.
• 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, 4 segments) - 3 beeps 3 times.
• Entry into Deco during a FREE Dive (a Violation) - 3 beeps 3 times.
• Free Dive Mode Countdown Timer reaches 0:00 - 3 beeps 3 times.
During the following situations, the audible will not turn off when acknowledged -
• Delayed Violations.
• Deco Stop Depth Violation => 70 FT/21 M stop required.
• 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.
**Prior to attempting to Download data from your VT 4.0 or Upload Settings to it, review the HELP section of the Oceanlog program. Recommended is
to print those sections of HELP that you consider appropriate for your Interface activities.
The Settings Upload portion of the Oceanlog program can be used to set/change the Set A group (Alarms), Set U group (Utilities), Set T (Time), etc. using
the same Interface System. FO2 and FREE Mode related items must be set using the control buttons.
Information available for retrieval (download) from the VT 4.0 to the PC Download portion of the program includes dive data such as number, surface
interval time, maximum depth, elapsed dive time, no deco status, pressure, start date/time, lowest temperature under water, sampling rate, dive profile,
and Set Points.
The Oceanlog program also allows upgrade of select versions of the VT 4.0's firmware (operating system software) after which the VT 4.0 resets all operat-
ing data. Since the upgrades require reset of the VT 4.0, they are blocked during 24 hours after dives.
• Refer to page 50 for more details relating to Oceanlog and PC Interface.
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POWER SUPPLY
• VT 4.0 Battery >> (1) 3 vdc, CR2450, Lithium.
• Shelf life >> up to 5 years.
• Use life >> 100 dive hours if (1) 1 hour dive per dive day up to 300 dive hours if (3) 1 hour dives per dive day.
• Transmitter (each) >> (1) 3 vdc, CR2, .75 Ahr, Lithium.
• Use life >> 300 dive hours if (2) 1 hour dives per dive day.
• Replacement >> by user (annual recommended).
Battery icon (for VT 4.0 only, does not apply to TMTs):
• Warning >> icon on solid when < 2.75 volts, battery change recommended.
• Alarm >> icon on flashing when < 2.50 volts, change the battery.
BATTERY STATUS
To access, while viewing NORM (or GAUG) SURF Main >>
• M (< 2 sec) to access Main Menu.
• 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
3 sec (Fig. 2).
VT 4.0 LOW BATTERY WHILE ON THE SURFACE
<= 2.75 volts (warning level)
• Backlight is completely disabled.
• Battery icon (shell with inner bar) appears solid (Fig. 3a).
• If a dive is started, the icon is not displayed on the dive mode screens.
• All functions, including Compass Mode, continue to be available.
<=2.50 volts (Too Low - alarm level)
• Battery icon (shell only) will flash for 5 seconds then the unit shuts off completely.
VT 4.0 LOW BATTERY DURING A DIVE
<= 2.75 volts (warning level)
• Backlight is completely disabled.
• All other functions continue to be available.
• Battery icon is not displayed on the dive mode screens.
• Battery icon (shell with inner bar) appears solid upon entry into Surface Mode.
<= 2.50 volts (Too Low - alarm level)
• Backlight is completely disabled.
• All other functions continue to be available during the dive.
• Battery icon is not displayed on the dive mode screens.
• Upon surfacing, the Battery icon (shell only) and graphic CHANGE BATTERY flash for 10 minutes (Fig. 4), then the unit shuts
Off completely.
TMT (TRANSMITTER) LOW BATTERY
Indication is provided only while on the surface.
<= 2.75 volts (warning level)
• The graphics TMTx BATTERY LOW appear solid on the Battery Status screen (Fig. 5A).
• DC functions continue to be available (surface and dive).
<= 2.50 volts (Too Low - alarm level)
• The graphics TMTx LOW BATTERY alternate with the graphics NORM (or GAUG) and DIVE xx on the SURF Main screen
(Fig. 5B).
• The graphics TMTx BATTERY and LOW also flash on the Battery Status screen.
• TMT operation continues until Tank Pressure decreases to 50 PSI.
Fig. 1 - VT 4.0 BATTERY
STATUS
Fig. 2 - TMT BATTERY
STATUS
Fig. 3 - LOW BATTERY
WARNING
a
Fig. 4 - LOW BATTERY
(after surfacing)
Fig. 5B - TMT LOW BATT
(Alarm)
Fig. 5A - TMT LOW BATT
(Warning)
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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.
If no previous dive has been taken within the past 24 hours, NORM is the default mode upon activation with others ac-
cessed as described later.
At any time while operating in Surface Modes, operation will enter the Dive Mode selected upon descent to 5 FT (1.5 M) for
5 seconds.
• When Wet Activation is set Off, Dive Mode will only be activated when the unit is first activated and operating in a
surface mode.
• When Wet Activation is set On, the selected Dive Mode will activate upon descent regardless of whether is is activated
and operating first.
TRANSITION PERIOD, upon surfacing:
Operation shifts from Dive Mode to Surface Mode upon ascent to 2 FT (0.6 M) for 1 second; however, Surface mode
'screens' will not be available until a Transition time elapses.
The reason for this is that making a descent during the first 10 minutes after surfacing from a NORM or GAUG dive, or
the first 1 minute after surfacing from a FREE dive, is a continuation of that dive.
A descent made after the 10 minute (or 1 minute) interval has elapsed is then considered a new dive.
During the first 10 minutes after surfacing from a NORM or GAUG dive, or the first 1 minute after surfacing from a FREE
dive, the Dive Main screen will be displayed with Surface Interval time replacing Current Depth. Dive ALTs can be accessed
to view other information pertaining to that dive.
POWER SAVER MODE (PSM)
Once 10 minutes elapse, after the 10 minute (NORM or GAUG) or 1 minute (FREE) Transition Period on the surface after a
dive, the unit will enter a Power Saver Mode (PSM) which turns the display screen off until a button is pressed at which time
it will turn back on.
During the 10 minutes that the screen is off, all operations continue as normal in the background with current updated infor-
mation displayed as soon as the screen comes on again.
OPERATING MODES
Pay special attention to items marked with this Warning symbol.
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NORM
SURFACE MODES
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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).
> Graphic GAS 1, default on surface before first dive and 10 minutes after surfacing from dives.
> Tank Pressure with PSI (or BAR) and Link (speaker) icons, if the Receiver is successfully Linked with an active TMT
(Transmitter), 000 flashing after 15 seconds of lost Link.
> Graphic AIR, or Nitrox value set with FO2 icon.
> TLBG with icon, if any nitrogen after NORM or FREE dives.
> Nx icon, if FO2 is set for Nitrox.
> (PZ+) icon, if selected as the Algorithm (blank if Dsat).
> Battery icon, if voltage is low.
• A (< 2 sec) to access ALT 1.
• M (< 2 sec) to access NORM Main Menu.
• M (2 sec) to access NORM Shortcut*.
• S (2 sec) to access Compass.
• S (< 2 sec) to activate Smartglo Backlight.
*Shortcut takes you a screen selected using the Set S (Shortcut) feature, see page 18.
NORM SURF ALT 1, information includes (Fig. 7):
> SI* (hr:min) with Time (clock) and SURF icons.
> Max Depth* with FT (or M) and MAX icons.
> Elapsed Dive Time* (hr:min) with graphic EDT.
> Graphic LAST, indicating that data is from the dive previously conducted while in NORM mode.
*Dashes if no previous dive.
• A (< 2 sec) to access ALT 2.
• 10 sec, revert to Main if A is not pressed.
• S (< 2 sec) to activate Backlight.
NORM SURF ALT 2, information includes (Fig. 8):
> Altitude graphic, if EL2 (to EL7), blank if Sea level.
> Time of Day (hr:min) with graphic A (or P).
> Temperature with ° icon and graphic F (or C).
• A (< 2 sec) to access ALT 3 (if Nx), revert to Main (if Air).
• 5 sec, revert to Main if A is not pressed.
• S (< 2 sec) to activate Backlight.
NORM SURF ALT 3, information includes (Fig. 9):
> Graphic O2 with Nx icon.
> (PZ+) icon if selected, blank if DSAT.
> Current O2 saturation with graphic %O2SAT.
> Graphics SETTINGS and GAS 1 with PO2 and FO2 values currently set with icons.
• A (< 2 sec) to revert to Main, or after 5 sec.
• S (< 2 sec) to activate Backlight.
NORM MENU
• M (< 2 sec) to access Menu, while viewing Surface Main.
• A (< 2 sec) to step forward through selections (down screen).
• A (hold) to scroll forward through selections (down screen) at a rate of 4 per second.
• M (< 2 sec) to step back through selections (up screen).
• S (< 2 sec) to select (access) the item shown next to the pointer icon ( > ).
• S (2 sec) to revert from the Main Menu to Surface Main.
• M (2 sec) any time to revert to Surface Main.
• 2 min (no button action) will revert to Surface Main.
Reminder:
• Pointer icon ( > ) at the left indicates that the item can be selected.
• Down Arrow icon ( v ) at the right indicates that additional items are available below (after) those shown.
• Up Arrow icon ( ^ ) at the right indicates that additional items are available above (before) those shown.
Fig. 6B - NORM SURF MAIN
(after Nitrox dive 2)
Fig. 6A - NORM SURF MAIN
(no dive yet, set for Air)
Fig. 9 - NORM SURF ALT 3
Fig. 7 - NORM SURF ALT 1
Fig. 8 - NORM SURF ALT 2
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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.
DESAT Time also begins counting down 10 minutes after surfacing from a dive, counting down from 23:50 (max) to 0:00
(hr:min).
When the DESAT time reaches 0:00, which will generally occur prior to the FLY count down reaching 0:00, it will remain on the
display until the FLY count down reaches 0:00.
> DESAT is not displayed after a Gauge or Violation dive.
> Desaturation requiring Times greater than 24 hours will display 23: - - .
> In the event that Time to Desaturate still remains at the end of 24 hours, the added time will be zeroed.
> When other screens are accessed, the FLY and DESAT countdowns continue in the background.
Fly/Desat, information includes (Fig. 10):
> Graphics FLY and DSAT with countdown times (hr:min) and Time (clock) icon, dashes if no dive yet.
• S (< 2 sec) to revert to Main Menu.
NORM PLAN MODE
No Deco time Limits (NDLs) and O2 time Limits (OTLs) in Plan Mode are based on the Algorithm selected (DSAT or PZ+), the FO2
set for Gas 1, and residual nitrogen (or O2) remaining from previous NORM (or FREE) dives. FO2 set for other Gases are not
used for Plan calculations.
PDPS (Pre Dive Planning Sequence)
Plan screens will sequence through Depths from 30 to 190 FT (9 to 57 M), or the Max Depth that will allow theoretical No Deco
Dive Time of at least 1 minute based upon the previous dive profiles in a series of repetitive dives and taking into account descent
and ascent rates of 60 FPM (18 MPM).
When the Conservative Factor is set On, NDLs are reduced to the values of the next 3,000 foot (915 meter) higher Altitude.
Refer to tables in back.
PDPS, information includes (Fig. 11A/B):
> Plan Depth value with FT (or M) icon.
> Nx and (PZ+) icons, if they apply.
> Max Depth allowed with FT (or M) and MAX, if Nx.
> Graphic NDC (or OTL) with Dive Time allowed (min).
> Graphic GAS 1 with FO2 icon.
> Graphic AIR; or PO2 alarm value set with icon and FO2 Nitrox value set, if Nx.
• A (hold) to scroll forward through screens at a rate of 4 per second increasing planned Depth from 30 to 190 FT (9 to 57
M) in increments of 10 FT (3 M).
• A (< 2 sec) to step forward through screens.
• M (< 2 sec) to step back through screens.
• S (< 2 sec) to exit and revert to the Main Menu.
NORM/GAUG LOG MODE
Information from the latest 24 NORM and/or GAUG dives is stored for viewing. After exceeding 24 dives, the most recent dive
is stored while the oldest is deleted.
> Dives are numbered from 1 to 24 starting each time NORM (or GAUG) Dive Mode is activated. After 24 hours elapse with
no dive, the first dive of the next period of operation is #1.
> 10 minutes after a dive, the Log screens for all dives stored can be viewed.
If a dive’s elapsed time (EDT) exceeds 599 (min), data at the 599 interval is recorded in the Log upon surfacing of the unit.
Main Menu >> Log Menu >> Dive >> Data 1 >> Data 2 >> Data 3.
Log Menu, information includes (Fig. 12):
> Graphics LOG and MENU with mode (book) icon.
> Listing* of dives displaying - - Number (1 to 24), Date, and start Time; or graphics NO DIVES YET if a new unit.
*Up and Down arrows are not displayed at the right due to space limitations.
• A (hold) to scroll forward (down) through the listing at a rate of 8 entries per second.
• A (< 2 sec) to step forward (down) through the listing.
• M (< 2 sec) to step back (up) through the listing.
• S (< 2 sec) to access that dive's Log Data 1 screen.
• S (2 sec) to revert to Main Menu.
Fig. 10 - FLY/DESAT
Fig. 11A - PDPS
(Gas 1 set for Air)
Fig. 11B - PDPS
(Gas 1 set for Nitrox)
Fig. 11C - PDPS
(times controlled by O2)
Press S (< 2 sec) to
access Log Menu.
Fig. 12 - LOG MENU
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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).
> Max Depth with graphics FT (or M) and MAX.
> Elapsed Dive Time (min) with graphic EDT.
> Graphic NORM, GAUG, or VIOL with dive Number.
> TLBG with max segment flashing, others fixed up to end of dive accumulation. All flash if Violation. Blank if GAUG.
> VARI, max Ascent Rate sustained for 4 sec.
• S (< 2 sec) to access that dive's Log Data 2 screen.
• S (2 sec), at any time, to revert to Log Menu.
Log Data 2, information includes (Fig. 14):
> Log (book) icon.
> Graphic SEA (or EL2 - EL7), altitude level of dive.
> Graphics TMT 1, xxx PSI (or BAR) START, and xxx PSI (or BAR) END, indicating Tank 1 pressures.
> Temperature with ° icon and graphic F (or C), minimum recorded during that dive.
• S (< 2 sec) to access that dive's Log Data 3 screen if Nx, or revert to Log Menu if Air or GAUG.
• S (2 sec), at any time, to revert to Log Menu.
Log Data 3 (Nx only), information includes (Fig. 15):
> Log (book) and Nx icons with graphic O2.
> (PZ+) icon, if it was selected.
> O2 accumulated at end of dive with graphic %O2SAT.
> Max level of PO2 achieved with icon.
> Graphic GAS 1 (or 2 or 3), one in use when dive ended.
> FO2 value set for Gas in used when dive ended, with icon.
• S (< 2 sec) to revert to Log Menu.
• S (2 sec), at any time, to revert to Log Menu.
NORM/GAUG SET MENU
The Set Menu selection provides access to a listing of sub menus that contain items specific to NORM and GAUG modes as well
as some utility items that also apply to FREE mode.
• S (< 2 sec) to access the Set Menu while the pointer icon ( > ) is next to that item on the Main Menu.
Set Menu, information includes (Fig. 16A/B):
> Graphics SEt and MENU with selections -
> F - FO2 (NORM only).
> A - ALARMS.
> U - UTILITIES.
> T - TIME.
> S - SHORTCUT.
> D - DIVE MAIN.
> P - PREVIEW.
These Set Groups are described after the Main Menu items (starting on page 16).
• A (< 2 sec) to step forward (down) through Menu selections.
• M (< 2 sec) to step back (up) through Menu selections.
• S (< 2 sec) to access the item next to the pointer ( > ).
• S (2 sec) to revert to Main Menu.
SELECT OP (OPERATING) MODE
This feature allows another Operating Mode to be selected.
Select OP Mode, information includes (Fig. 17):
> Graphics SEL and DIVE MODE.
> Graphic NORM, flashing.
> Graphics GAUG and FREE.
• A (< 2 sec) to step forward (down) through selections.
• M (< 2 sec) to step back (up) through selections.
• S (< 2 sec) to select that Mode and revert to it's SURF Main screen.
• S (2 sec) to revert to Main Menu.
Fig. 13 - LOG DATA 1
Fig. 14 - LOG DATA 2
Fig. 15 - LOG DATA 3
Press S (< 2 sec) to access.
Fig. 16B - SET MENU
Fig. 17 - SELECT OP MODE
Fig. 16A - SET MENU
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VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
HISTORY MODE (NORM/GAUG)
History is a summary of data recorded during all NORM and GAUG dives conducted.
History 1, information includes (Fig. 18):
> Graphic TOTAL, or NO DIVES YET (if new unit).
> Total dives recorded (up to 9999) with graphic DIVES
.
> Total dive hours recorded (up to 9999) with graphic HOURS.
> Graphic HIST.
• S (< 2 sec) to access History 2.
• S (2 sec) to revert to Main Menu.
History 2, information includes (Fig. 19):
> Graphic SEA (or EL2 to EL7), highest Altitude at which a dive was conducted.
> Max Depth recorded with FT (or M) and MAX icons.
> Longest dive time (minutes) recorded during a single dive (up to 599 min) with graphic EDT.
> Lowest Temperature recorded during a dive with icon and graphic F (or C).
• S (< 2 sec) to revert to Main Menu.
• S (2 sec) to revert to History 1.
VT 4.0 ID
This information should be recorded and kept, it will be required in the event that your unit requires factory service.
ID (Identification), information includes (Fig. 20):
> Graphic VT 4.0 ID.
> Graphic SN with the factory programmed serial number.
> Graphic FIRMWARE with 1A (or higher)*, indicating the Firmware revision level currently installed in the unit.
> Graphic LCD with 01 (or higher), indicating the Display's revision number.
*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.
BATTERY/TMT STATUS
Access to this selection activates the VT 4.0's Receiver, then after 2 seconds, starts an automatic scroll displaying a sequence of
status screens.
Also refer to page 9.
> VT 4.0 Battery Status for 3 sec, then -
> TMT 1 Status for 3 sec, then -
> TMT 2 Status for 3 sec, then -
> TMT 3 Status for 3 sec, then -
> TMT 4 Status for 3 sec, then -
> revert to Main Menu.
VT 4.0 Battery Status, information includes (Fig. 21A):
> Graphic VT 4.0
> Graphics BATTERY and GOOD (if => 2.75 volts) or LOW (< 2.75 volts).
> Battery icon, if Low.
TMT Status, information includes (Fig. 21B):
> Graphics TMT 1 (or 2, 3, 4).
> Graphics BATTERY GOOD (if linked and => 2.75 v), or BATTERY LOW (if < 2.75 v).
> Tank Pressure with PSI (or BAR) and Link (speaker) icons.
TMT Status (not reporting), information includes (Fig. 21C):
> Graphic TMT 1 (or 2, 3, 4).
> Graphics NOT AVAILABLE.
This screen appears when the VT 4.0's receiver is not receiving a signal from a TMT, or the TMT is set Off.
Fig. 18 - HISTORY 1
Fig. 19 - HISTORY 2
Fig. 20 - VT 4.0 ID
Press S (< 2 sec) to access.
Fig. 21 - BATT/TMT STATUS
(sample screens)
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VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
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.
> Selections* with Set Points entered using that menu.
*If no selections have been made yet, the graphics USE SET P TO SELECT ENTRIES will be displayed.
• S (< 2 sec) to revert to Main Menu.
SET GROUPS
Information that follows describes the selections contained in the NORM Set Groups (F, A, U, T, S, D, P) that are accessed from
the Set Menu.
Main Menu >> Set Menu >> Set Group Menu >> Set Selection.
SET F (FO2) Menu, information includes (Fig. 23A):
> Graphics* SEt F and MENU.
*During the time that numeric FO2 values are flashing, the Max Depth allowed for the PO2 alarm set with the FT (or M) icon is displayed in
place of the graphic SEt F and the PO2 alarm value set with the PO2 icon is displayed in place of the graphic MENU (Fig. 23B).
Selections with their last Set Points saved include:
> FO2-1 with Set Point (AIR, or 21 to 100%), 1% increments.
> FO2-2 with Set Point (AIR, or 21 to 100%), 1% increments.
> FO2-3 with Set Point (AIR, or 21 to 100%), 1% increments.
> FO2-4 with Set Point (AIR, or 21 to 100%), 1% increments.
> DEFAULT with Set Point (ON or OFF).
• A (< 2 sec) to step forward (down) through Menu.
• M (< 2 sec) to step back (up) through Menu.
• S (< 2 sec) when the pointer icon ( > ) is next a selection will flash that item’s Set Point (Fig. 23B).
• A (< 2 sec) to step upward through Set Points (increase).
• A (hold) to scroll upward through Set Points at a rate of 8 per second.
• M (< 2 sec) to step back through Set Points (decrease).
• S (< 2 sec) to save the setting and revert to the Set F Menu.
FO2 50% Default:
When set ON and FO2 Gas 1 is set for Nitrox (21 to 100%), 10 minutes on the surface after that dive the FO2 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 Gas 1 is changed before the dive.
FO2 Gas 1 will continue to reset to the 50% Default after subsequent repetitive dives until 24 hours elapse after the last dive, or
the Default selection is set OFF.
When set OFF, FO2 Gas 1 will remain set at the last Set Point entered during that period of activation.
FO2 set for AIR:
The default FO2 for Gas 1 each new activation period is AIR.
When FO2 for Gas 1 is set for AIR -
> calculations are the same as when it is set for 21% O2.
> it remains set for AIR until it is set for a Nitrox (21 to 100% O2).
> O2SAT and PO2 values and/or warnings will not be displayed at any time, on the surface or during dives.
> Max Depths allowed by the PO2 alarm set will not be displayed.
Internally, the unit will keep track of the oxygen accumulation so that if FO2 for Gas 1 is subsequently set for Nitrox, the oxy-
gen accumulated during previous AIR dives will be accounted for in the next Nitrox dive (during that dive period and series of
repetitive dives).
FO2 set for Nitrox:
When FO2 for any Gas is set for Nitrox (21 to 100%), the dive is calculated to be for Nitrox. The Nx icon is to be displayed on
all applicable screens.
Once FO2 for Gas 1 is set for Nitrox (21 to 100%), the AIR option for all gases is disabled until 24 hours elapse after the last
dive.
The AIR option will not be displayed in Set FO2 until a full 24 hour Surface Interval has elapsed.
If the FO2 Default is set OFF, FO2 for all gases will remain at their respective Set Points until changed.
If the FO2 Default is set ON, FO2 for all gases default to 50%.
Fig. 22 - PREVIEW
(selected settings)
Fig. 23A - SET F MENU
(stepping through)
Fig. 23B - SET FO2-2
(changing the setting)
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© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
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).
> EDT with Set Point (OFF, or 10 to 180 MIN),
elapsed dive time
, increments of 5 MIN.
> TLBG* with Set Point (1 to 4 BAR), increments of 1 BAR.
> DTR* with Set Point (OFF, or 1 to 20 MIN), increments of 1 MIN.
> TURN with Set Point (OFF, or 1000 to 3000 PSI, or 70 to 205 BAR), increments of 250 PSI (5 BAR).
> END with Set Point (300 to 1500 PSI or 20 to 105 BAR), increments of 100 PSI (5 BAR).
> PO2* with Set Point (1.20 to 1.60), increments of 0.10.
*These items apply to NORM only.
• A (< 2 sec) to toggle or increase Set Point.
• A (hold) to increase Set Point at a rate of 8 per second.
• M (< 2 sec) to decrease Set Point.
• S (< 2 sec) to save the setting and revert to the Set A Menu.
SET U (Utilities) Menu, information includes (Fig. 25A - C):
> Graphics SEt U and MENU.
Selections with their last Set Points saved include:
> WET ACT with Set Point (ON or OFF) >>
wet activation
.
> UNITS with Set Point (IMP or MET) >>
imperial or metric
.
> DEEP* with Set Point (ON or OFF) >>
no deco deep stop
.
> SAFE* with Set Point** (OFF, TMR, ON) >>
no deco safety stop
.
> ALGO* with Set Point (DSAT or PZ+) >>
algorithm, basis for Ni-O2 calculations
.
> CONSER* with Set Point (OFF or ON) >> no deco
conservative factor, reduces NDLs based on altitude
.
> GLO DUR with Set Point (5, 10, or 15 SEC) >>
time backlight remains on
.
> SAMPLE with Set Point (2, 15, 30, or 60 SEC) >>
rate data is recorded for PC download
.
> TO SET TMT MENU** >>
to access Set TMT menu
.
*These items apply to NORM only.
**Description expanded, next pages.
Additional information relating to the effects of the items included are described in associated sections throughout this manual.
• A (< 2 sec) to step forward (down) through selections.
• M (< 2 sec) to step back (up) through selections.
• S (< 2 sec) when the pointer icon is next to a selection will flash that item's Set Point.
• A (< 2 sec) to toggle or increase Set Point.
• M (< 2 sec) to decrease Set Point.
• S (< 2 sec) to save the setting and revert to Set U Menu.
Set Safety Stop, information includes (Fig. 26):
The Set U menu will display OFF, ON, or TMR solid.
• S (< 2 sec) will flash (Fig. 26A) the graphic allowing step through of the others with the addition of the SET selection (Fig.
26B).
OFF >> TMR >> SET >> ON.
• S (< 2 sec) while SET is flashing will display the Stop Depth and Time with the Depth setting flashing (Fig. 26C).
• A (< 2 sec) to step forward through Depth settings (10, 15, 20 FT or 3, 4, 5, 6 M).
• M (< 2 sec) to step back through Depth settings.
• S (< 2 sec) to save Depth setting and flash Time digits.
• A or M (< 2 sec) to toggle Times between 3 and 5 min.
• S (< 2 sec) to save Depth/Time setting and revert to the Set U Menu with SET flashing.
• A (< 2 sec), then S (< 2 sec) to flash, then save ON.
Fig. 24A - SET A MENU
(stepping through)
Fig. 24B - SET PO2
(changing the setting)
Fig. 25B - SET U MENU
(changing a setting)
Fig. 25C - SET U MENU
(stepping through)
Fig. 25A - SET U MENU
(stepping through)
Fig. 26A - SET SAFETY
STOP
Fig. 26C - SET SS
(Depth, Time)
Fig. 26B - SET SS
(to access Set Depth/Time)
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VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
Set TMT Menu, information includes (Fig. 27):
> Graphics SEt and MENU.
Selections with their last Set Points saved include:
> TMT 1 with Set Point (OFF, ON, or SET).
> TMT 2 with Set Points (OFF, ON, or SET).
> TMT 3 with Set Points (OFF, ON, or SET).
> TMT 4 with Set Points (OFF, ON, or SET).
• A (< 2 sec) to step forward (down) through selections.
• M (< 2 sec) to step back (up) through selections.
• S (< 2 sec) when the pointer icon ( > ) is next a selection will flash that item’s ON/OFF Set Point.
• A (< 2 sec) to step forward through that TMT’s Set Points (OFF, ON, SET).
• M (< 2 sec) to step back through that TMT’s Set Points.
• S (< 2 sec) to save the setting.
> If TMT 1 OFF is selected (saved), the VT 4.0’s Receiver will be disabled, all other TMT Set selections will display the
graphics OFF, and operation reverts to the Set U Menu.
> If TMT 1 ON is selected, ON becomes solid and the TMT 2 ON/OFF Set Point flashes, allowing it to be set.
> If TMT 1 SET is selected (Fig. 28), the Set TMT 1 SN screen is to be displayed.
Refer to Set TMT SN that follows.
Setting TMT 2, 3, and 4 are similar to setting TMT 1.
Set TMT SN, information include (Fig. 29):
> Graphic TMT 1 (2, 3, 4) SN.
> Graphic LINK CODE with the serial number (6 digits), the 1st (left) digit flashing.
• A (< 2 sec) to step upward through the 1st digit’s values.
• M (< 2 sec) to step back through the 1st digit’s values.
• S (< 2 sec) to save the 1st digit’s value and flash the 2nd digit.
•
Repeat A, M, S button action until all digits are set with operation then reverting to the Set TMT Menu with SET solid.
SET T (Time/Date) Menu, information includes:
> Graphics SEt t and MENU with Time (clock) icon.
Selections with their last Set Points saved include:
> DATE FORM with Set Point (M.D or D.M) >>
date format, M.D = Month.Day, D.M = Day.Month
> HOUR FORM with Set Point (12 or 24) >>
hour format, 12 = 12: A to 11: P, 24 = 0: to 23:
> TIME with Set Point (hr:min) >>
12:01 A to 11:59 P, if 12 Hour Format (or 0:01 to 23:59, if 24 Hour Format)
.
> DATE with Set Point (M.D.Y or D.M.Y) >>
Month.Day.Year or Day.Month.Year, arranged by Date Format set:
• A (< 2 sec) to step forward (down) through selections.
• M (< 2 sec) to step back (up) through selections.
• S (< 2 sec) when the pointer icon ( > ) is next a selection will flash that item’s Set Point (Fig. 30).
• A (< 2 sec) to increase Set Points one at a time.
• A (hold) to increase Set Points at a rate of 8 per second.
• M (< 2 sec) to decrease Set Points one at a time.
• S (< 2 sec) to save the setting which becomes solid, then the next value flashes.
> The left digits of the Time and Date selections will flash first allowing them to be changed after which the next digits (to the
right) flash allowing them to be changed.
> TIME (hr:min) >> Hour digits flash (Fig. 31), then Minutes.
> DATE (m.d.y or d.m.y) >> Year digits flash (Fig. 32), then Month, then Day, regardless of their position.
Fig. 27 - SET TMT MENU
(stepping through)
Fig. 28 - SET TMT 1
(changing the setting)
Fig. 29 - SET TMT 1 SN
(changing the setting)
Fig. 31 - SET TIME
(changing the Hour setting)
Fig. 30 - SET T MENU
(stepping through)
Fig. 32 - SET DATE
(changing the Year setting)
18
VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
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.
Selections include:
> SET FO2.
> LOG MENU.
> MY INFO (default Shortcut until another item is selected).
> SET HEADING.
> SET TIME.
• A (< 2 sec) to step forward (down) through selections.
• M (< 2 sec) to step back (up) through selections.
• S (< 2 sec) when the pointer icon ( > ) is next a selection will save it as the Shortcut and revert to the Set Menu.
SET D (Dive Main) Menu, information includes (Fig. 34):
> Graphics SEt D and MENU.
The default screen for No Deco dives (except while at Stops) displays Current Depth, NDC time, Pressure, and ATR (air time
remaining). Items such as Max Depth and EDT (elapsed dive time) are displayed on Alternate screens. Set D allows certain items
to be added to the Main (moving them from the Alternates).
One item can be selected from the following menu list.
> USE DEFAULT >>
no change to the display.
> ADD EDT >>
reduces the size of NDC digits
.
> ADD MAX D >>
also reduces the size of NDC digits
.
> ADD EDT + MAX D >>
NDC, EDT, & Max D digits smaller
.
> ADD O2 DATA >>
reduces the size of NDC digits & PO2 replaces Pressure (which moves to an Alternate)
.
• A (< 2 sec) to step forward (down) through selections.
• M (< 2 sec) to step back (up) through selections.
• S (< 2 sec) when the pointer icon ( > ) is next a selection will save it as the Dive Main* and revert to the Set Menu.
*Ensure that the selection to be saved reflects information you want to see on the Dive Main, it cannot be changed during the
dive (only while on the surface using this menu).
SET P (Preview) Menu, information includes (Fig. 35):
> 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 ac-
cessed from the Surface Main Menu (see page 15).
Up to 4 items can be selected from the following menu list.
> FO2_GAS 1 SET
.
> FO2_GAS 2 SET
.
> FO2_GAS 3 SET
.
> FO2_GAS 4 SET
.
> PO2 AL SET
.
> DEPTH AL SET
.
> EDT AL SET
.
> TURN AL SET
.
> END AL SET
.
> DEEP STOP SET
.
> SAFETY STOP SET
.
> GLO DUR SET
.
> MAX OP DEPTH
.
• A (< 2 sec) to step forward (down) through selections.
• M (< 2 sec) to step back (up) through selections.
• S (< 2 sec) when the pointer icon ( > ) is next a selection will toggle* it between solid and flashing.
*Once 4 items are flashing, another item cannot be toggled to flash until one of the flashing items is toggled to solid.
When satisfied that those items flashing (up to 4) are what you want for the Preview screen, press S (2 sec) to display all
items flashing (Fig. 36), then press S (< 2 sec) to revert to the Preview screen with all items solid.
Fig. 33 - SET S MENU
(stepping through)
Fig. 34 - SET D MENU
(stepping through)
Fig. 35 - SET P MENU
(stepping through)
Fig. 36 - SET P MENU
(preview of selections)
19
VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
DIVE MODE
FEATURES
20
VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
TRANSMITTER SIGNAL RECEPTION GUIDE
PROXIMITY OF THE TMTS (Transmitters) AND VT 4.0
The TMTs emit low frequency signals that radiate out in semicircular patterns parallel to the length dimension of the TMT. A coiled
antenna inside the VT 4.0 receives the signals when it is positioned within a zone parallel to or at a 45 degree angle to the TMT
as illustrated.
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.
When installed into the high pressure ports of the Regulator First Stages, the TMTs must be positioned so that they face horizon-
tally outward from the Tank Valves.
Link Interruption Underwater
During a dive, you may at times move the VT 4.0 out of the signal pattern of the TMT, resulting in a temporary loss of the Link
signal. The Link will be restored within 4 seconds after the VT 4.0 is moved back into its correct position.
An interruption may also occur while the VT 4.0 is within 3 feet (1 meter) of a running DPV, or shortly after a Strobe flashes. The
Link will be restored within 4 seconds after the VT 4.0 is moved out of that area.
If the Link is not restored within 15 seconds, the Audible will sound, and the graphics LOST TMT, Pressure value, and Link icon
will flash (Fig. 37) until it is restored. Fig. 37 - LOSS OF LINK
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