Oceanic VT Pro Operating Manual
OCEANIC
VT Pro
dive computer
operating manual
®
Components:
a. LED Warning Light
b. Advance (front) Button
l
m
jk
i
h
n
o
a
r
p
c. Smartglo Sensing Port
d. Air Time Remaining Bar Graph
e. Select (side) Button
f. Icon - Operating Mode
g. Icon - Time
h. Variable Ascent Rate Indicator
i. Graphic - Depth
g
j. Graphic - Demo Mode
k. Icon - Descend Arrow
Icon - Decompression Ceiling
f
Icon - Ascend Arrow
l. Icon - Log Mode
m. Tissue Loading Bar Graph
n. Icon - Alarm (Set Mode)
o. Icon - Temperature
p. Battery Indicator
q. O2 (oxygen) Bar Graph
e
r. Graphic - Transmitter Link
q
d
r
c
b
VT PRO
2
CONTENTS
LIMITED TWO-YEAR WARRANTY ............................................................................................................................. 7
NOTICES ..................................................................................................................................................................... 7
DECOMPRESSION MODEL ....................................................................................................................................... 7
FCC COMPLIANCE ..................................................................................................................................................... 8
FEATURES AND DISPLAYS ............................................................................................. 9
INTERACTIVE CONTROL CONSOLE ...................................................................................................................... 10
BAR GRAPHS ........................................................................................................................................................... 11
Tissue Loading Bar Graph (TLBG) ................................................................................................ ....................... 11
Oxygen Bar Graph (O2BG) ................................................................................................................................... 11
Variable Ascent Rate Indicator (VARI) ................................................................................................................. 12
Air Time Remaining Bar Graph (ATRBG)............................................................................................................. 12
DIVE TIME REMAINING ........................................................................................................................................... 13
ALPHA / NUMERIC DISPLAYS ................................................................................................................................ 13
Cylinder Pressure ................................................................................................................................................. 13
Depth Displays ..................................................................................................................................................... 14
Time and Date Displays ....................................................................................................................................... 14
Temperature Display ............................................................................................................................................. 15
AUDIBLE ALARM ...................................................................................................................................................... 15
LED Warning Light ............................................................................................................................................... 15
SMARTGLO BACKLIGHT ......................................................................................................................................... 17
POWER SUPPLY ...................................................................................................................................................... 17
Low Battery Condition .......................................................................................................................................... 18
FO2 MODE ................................................................................................................................................................. 19
FO2 50% Default .................................................................................................................................................. 20
3
CONTENTS (continued)
SETUP AND ACTIVATION ............................................................................................... 21
PRESSURE TRANSMITTER .................................................................................................................................... 22
ACTIVATION .............................................................................................................................................................. 22
Display Module Identification ............................................................................................................................... 24
SURFACE MODE ...................................................................................................................................................... 25
Accessing Other Modes ....................................................................................................................................... 26
SET MODES .............................................................................................................................................................. 26
ENTERING SETTINGS -SET MODE #1 ............................................................................................................... 27
ENTERING SETTINGS -SET MODE #2 ............................................................................................................... 30
PLAN AND DIVE MODES ................................................................................................ 45
TRANSMITTER SIGNAL RECEPTION GUIDE ........................................................................................................ 46
POSITIONING OF THE DISPLAY MODULE ............................................................................................................ 47
LINK INTERRUPTION UNDERWATER .................................................................................................................... 47
PRE DIVE PLANNING SEQUENCE ......................................................................................................................... 48
TISSUE LOADING BAR GRAPH .............................................................................................................................. 50
OXYGEN ACCUMULATION BAR GRAPH ............................................................................................................... 50
VARIABLE ASCENT RATE INDICATOR .................................................................................................................. 51
AIR TIME REMAINING BAR GRAPH ....................................................................................................................... 51
CONTROL OF DISPLAYS ......................................................................................................................................... 52
NO DECOMPRESSION DIVE MODE ....................................................................................................................... 53
No Decompression Dive Safety Stop ................................................................................................................... 54
DECOMPRESSION DIVE MODE ............................................................................................................................. 55
VIOLATION MODES .................................................................................................................................................. 57
Conditional Violation Mode .................................................................................................................................. 57
Delayed Violation Modes ..................................................................................................................................... 58
Immediate Violation Mode and Gauge Mode ...................................................................................................... 60
HIGH PO2 DIVE MODE ............................................................................................................................................. 61
HIGH OXYGEN ACCUMULATION ............................................................................................................................ 62
USER SET DIGITAL GAUGE MODE ........................................................................................................................ 63
4
CONTENTS (continued)
POST DIVE MODES ........................................................................................................ 65
POST DIVE SURFACE MODE .................................................................................................................................. 66
TRANSITION PERIOD .............................................................................................................................................. 66
AFTER THE TRANSITION PERIOD (THE FIRST 2 HOURS) .................................................................................. 67
To access the Pre Dive Planning Sequence ........................................................................................................ 68
To access the Time to Fly Countdown ................................................................................................................. 68
To access the Time to Desaturate Countdown .................................................................................................... 69
LOG MODE .......................................................................................................................................................... 69
AFTER THE FIRST 2 HOURS ................................................................................................................................... 72
WET CONTACTS ....................................................................................................................................................... 72
DOWNLOADING DATA TO A PC .............................................................................................................................. 73
RESET FEATURE ..................................................................................................................................................... 74
SIMULATOR (DEMO) MODE .......................................................................................... 75
GENERAL ........................................................................................................................ 83
CARE AND CLEANING ............................................................................................................................................. 84
INSPECTIONS AND SERVICE ................................................................................................................................. 84
BATTERY REPLACEMENT ...................................................................................................................................... 86
TRANSMITTER INSTALLATION ............................................................................................................................... 92
SPECIFICATIONS ..................................................................................................................................................... 93
OCEANIC WORLD WIDE .......................................................................................................................................... 99
SERVICE RECORD ................................................................................................................................................. 100
5
Pay special attention to items marked
with this Warning symbol.
WARNING: Prior to diving with the VT Pro, you must also read and
understand the Oceanic Dive Computer Safety and Reference
Manual.
6
LIMITED TWO-YEAR WARRANTY
For details, refer to the Product Warranty Registration Card provided.
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 Pro Operating Manual, Doc. No. 12-2338
© 2002 Design 2002
San Leandro, Ca. USA 94577
TRADEMARK NOTICE
Oceanic, the Oceanic logo, VT Pro, the VT Pro logo, Smart Glo, OceanGlo, Graphic Diver Interface, Tissue Loading
Bar Graph, Pre Dive Planning Sequence, Variable Ascent Rate Indicator, Set Point, Control Console, Turn Gas Alarm,
and OceanLog are all registered and unregistered trademarks of Oceanic. All rights are reserved.
PATENT NOTICE
U.S. Patents have been issued, or applied for, to protect the following design features:
Dive Time Remaining (U.S. Patent no. 4,586,136), Data Sensing and Processing Device (U.S. Patent no. 4,882,678),
Air Time Remaining (U.S. Patent no. 4,586,136), and Variable Ascent Rate Indicator (U.S. Patent no. 5,156,055). User
Setable Display (U.S. Patent no. 5,845,235) is owned by Suunto Oy (Finland).
DECOMPRESSION MODEL
The programs within the VT Pro 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 Pro dive computer model
is based upon the latest research and experiments in decompression theory. Still, using the VT Pro, 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.
7
FCC ID: MH8A
FCC Compliance:
This equipment complies with Part 15 of the FCC Rules. Operation is subject to the following 2
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.
8
WARNING: Prior to diving with the VT Pro, you
must also read and understand the Oceanic Dive
Computer Safety and Reference Manual which
provides Important Warnings and Safety Recommendations as well as general product information.
FEATURES and DISPLAYS
9
INTRODUCTION
Welcome to Oceanic and thank you for choosing the VT Pro !
It is extremely important that you read this Operating Manual in sequence and understand it
completely before attempting to use the VT Pro.
It is equally important that you read the Oceanic Dive Computer Safety and Reference
Manual (Doc. No. 12-2262) provided with your VT Pro. It contains information that you
must become familiar with prior to diving with your VT Pro.
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 two Control Buttons
that allow you to select display options and access specific
information when you want to see it. They are also used to link
the Transmitter, enter Settings, activate the Backlight, and acknowledge the Audible Alarm.
The Front button is referred to as Advance (Fig. 1a) and the
Side button as Select (Fig. 1b).
a
Fig. 1 - Interactive Control
Console
b
10
BAR GRAPHS
Tissue Loading Bar Graph (TLBG)
The Tissue Loading Bar Graph (Fig. 2a) represents tissue loading of nitrogen, showing your
relative no decompression or decompression status. As your depth and elapsed dive time
increase, segments will add to the Graph, and as you ascend to shallower depths, the Bar
Graph will begin to recede, indicating that additional no decompression time is allowed for
multilevel diving.
The Tissue Loading Bar Graph monitors 12 different nitrogen compartments simultaneously
and displays the one that is in control of your dive. It is divided into a green No Decompression (normal) zone, a yellow Caution zone (also No Decompression), and a red Decompression (danger) zone.
While you cannot provide a guarantee against the occurrence of decompression sickness,
you may choose your own personal zone of caution based upon age, physique, excessive
weight, etc., to reduce the statistical risk.
NOTE: Displays associated with oxygen and the O2
Bar Graph will only appear if FO2 has been set at a
value other than 'Air' (e.g., a numerical value).
Oxygen Accumulation Bar Graph (O2BG)
The O2 Bar Graph (Fig. 2b) represents oxygen loading, showing
the maximum of either per dive accumulated oxygen, or 24 hour
period accumulated oxygen.
a
b
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2
O
2
Fig. 2 - TLBG & O2BG
60
50
40
30
20
10
5
0
ATR
11
Deeper than 60 feet (18 m)
Segments Ascent Rate =
Displayed FPM MPM
0 0-20 0 - 6
1 21-30 6.5-9
2 31-40 9.5-12
3 41-50 12.5-15
4 51-60 15.5-18
5 >60 >18
60 feet (18 m) & Shallower
Segments Ascent Rate =
Displayed FPM MPM
0 0-10 0 - 3
1 11-15 3.5-4.5
2 16-20 5-6
3 21-25 6.5-7.5
4 26-30 8-9
5 >30 >9
VARI Values
a
b
O
2
O
2
Fig. 3 - VARI & ATRBG
12
As your oxygen exposure (accumulation) increases during the
dive, segments will add to the Bar Graph, and as loading decreases, it will begin to recede, indicating that additional exposure is allowed for that dive and 24 hour period.
Variable Ascent Rate Indicator (VARI)
The Variable Ascent Rate Indicator (Fig. 3a) provides a visual
representation of ascent speed (i.e., an ascent speedometer).
Green is a 'normal' rate, yellow a 'caution' rate, and red is 'Too
Fast'. 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 fpm (18 mpm). At
depths of 60 feet (18 meters) and shallower, ascent
rates should not exceed 30 fpm (9 mpm).
Air Time Remaining Bar Graph (ATRBG)
The Air Time Remaining Bar Graph (Fig. 3b) provides a graphic
representation of the time that you can remain at your present
depth and then, following a safe ascent, surface with a predeter-
60
50
40
mined reserve of Air. This calculation and display is based on
30
20
your Air Consumption Rate that is continuously monitored by the
10
5
0
VT Pro, and it takes into account the air required for a safe
ATR
ascent including any required decompression stops.
The green, yellow, and red zones adjacent to the bar graph enable you to quickly focus on
remaining breathing gas times of 60 minutes and less, based on your pre selected End
Pressure Alarm Set Point (described later). The bar graph is more precise as time decreases
toward the red zone.
DIVE TIME REMAINING
The VT Pro constantly monitors three critical pieces of information; no decompression status,
oxygen accumulation, and breathing gas consumption rate. Refer to the Oceanic Dive
Computer Safety and Reference Manual which describes Dive Time Remaining which is a
display that indicates the time that is more critical for you at that particular moment (i.e.;
whichever time is the least amount available of the three).
Displayed will be either Time Remaining before reaching the No Decompression limit (Fig.
5a), or Time Remaining before reaching the limit for Oxygen Accumulation, or Time Remaining before reaching the End Pressure Alarm set point.
ALPHA / NUMERIC DISPLAYS
Cylinder Pressure Display
Cylinder Pressure (Fig 5b) is displayed any time the Transmitter is
FEET
connected to a pressurized cylinder, and the Display Module is in
an active operating mode and properly linked.
20
Values of pressure are displayed numerically from 5 PSI (.5 BAR)
up to 5000 PSI (352 BAR) in increments of 5 PSI (.5 BAR).
O
2
Fig. 5 - Dive Time Remaining
10
5
PSI
0
ATR
13
a
b
Depth Displays
During a dive, the Current Depth display (Fig. 6a), indicates Depths from 0 to 399 feet
(120 meters) in 1 foot (.1 meter) increments.
By pressing the Front (Advance) button, the Maximum Depth reached during that dive
will be displayed (Fig. 6b).
During a Decompression Dive, the required Ceiling Stop Depth is displayed in the Max
Depth position. Maximum Depth can be viewed by pressing the Front (Advance) button.
Time and Date Displays
Time displays are shown in hour:minute format (i.e., 1:16 represents 1 hour and 16
minutes, not 116 minutes!). The colon that separates hours and minutes blinks once per
second when the display is indicating real time (e.g., Elapsed Dive Time), and is solid (nonblinking) when times are calculated projections (e.g., Time to Fly).
a
b
FEET
M
A
X
The Main Time display has the largest digits of the display (Fig.
d
6c) A second time display (Fig. 6d) is located above it. Both
displays are identified by clock icons.
Date is displayed only to identify dive data while it is viewed in
the Log Mode. When Units of Measure are set for 'Imperial', the
20
Month appears to the left of Day. When set for Metric, the
10
5
O
2
Fig. 6 - Cylinder Pressure
and Depth Displays
PSI
Month appears to the right of Day.
0
ATR
c
14
Temperature Display
Ambient Temperature is displayed in Surface Mode and Log Mode, and can be
viewed on an Alternate Display when the Front (Advance) button is pressed while in a dive
mode (Fig. 7a). If the Temperature exceeds a value of '99', 2 dashes ( - - ) will be displayed until temperature decreases to '99'.
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. The
Informational Displays are described in detail as the various operating modes
they appear in are presented throughout this manual.
AUDIBLE ALARM
When warning situations activate the Audible Alarm, the unit will
emit a continuous tone for 10 seconds, or until the situation is
corrected, or it is acknowledged by the user pressing the Front
(Advance) button for 2 seconds. If acknowledged by the user
and the situation corrected, the Alarm will sound again upon
reentry into the warning situation, or entry into another type of
warning situation.
a
FEET
A red LED Warning Light will flash when the Audible Alarm
sounds. They will turn off when the Alarm is acknowledged or
the situation is corrected. They will not be active if the Alarm is
Set OFF (a user setting).
O
2
Fig. 7 - Temperature Display
5
PSI
0
20
10
ATR
15
Situations that will sound the Alarm, if it is turned ON (a user setting), include -
• Entry into Decompression Mode.
• Air Time Remaining Bar Graph Alarm (a user setting).
• Air Time Remaining = 5 minutes, then 0 minutes.
• Turn Pressure Alarm (a user setting).
• End Pressure Alarm (a user setting).
• PO2 => than the Max PO2 Alarm (a user setting), or => 1.60 ATA.
• Descent deeper than the Max Depth Alarm (a user setting).
• Tissue Loading Bar Graph Alarm (a user setting).
• Dive Time Remaining Alarm (a use setting).
• Elapsed Dive Time Alarm (a use setting).
• O2 Accumulation => allowable per dive limit, or limit for a 24 hour period.
• Ascending above a required Decompression ceiling stop depth for less than 5 minutes
(referred to as a Conditional Violation).
• Ascent Rate exceeds 60 feet/minute (18 meters per minute) if greater than 60 feet (18
meters), or 30 feet/minute (9 meters/minute) at 60 feet (18 meters) and shallower.
• Loss of Transmitter Link signal for > 1 minute during Dive Modes.
A single short beep (which cannot be disabled) is emitted for the following -
• After the Diagnostic countdown, if everything is okay.
• If the unit automatically returns to Surface Mode from Simulator Mode.
• Upon completion of a Hot Swap battery change with calculations saved.
• Change from Delayed to Full Violation 5 minutes after the dive.
16
During the following situations, the 10 second continuous tone will be followed by a
5 second steady beep that 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 feet/21 meters or deeper.
• Being on the Surface for 5 minutes after a Conditional Violation (Permanent Violation).
SMARTGLO® BACKLIGHT
To activate the Backlight - press the Side (Select) button.
• The Smart Glo® feature senses the intensity of natural light present. If a low level of light
is present, the Backlight will activate and illuminate the display for button depression
time plus the user set Duration time of 0, 3, or 7 seconds.
• Press the button again to activate as desired.
NOTE: Extensive use of the Backlight reduces estimated Battery life. Also,
the Backlight does not operate during a Low Battery Condition or when downloading data to a PC.
POWER SUPPLY
The Transmitter utilizes 1 - 3 volt, CR2 Lithium Battery and the Display Module utilizes 1 - 3
volt CR2450 Lithium Battery. They should provide from 50 dive hours of operation, if you
conduct 1 - one hour dive each time the unit is activated, to over 150 dive hours of operation, if you conduct 3 or more one dives each time the unit is activated.
17
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2
Fig. 8 - Low Battery
(Surface Mode)
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2
Fig. 9A - Battery Indicator
Display Module
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2
Fig. 9B - Battery Indicator
PSI
Transmitter
18
Low Battery Condition
Voltage level is checked upon activation and every 10 minutes
during operation. When a Low Battery Condition occurs (either
the Display Module or Transmitter), the Battery icon appears on
the display flashing during Surface Mode (Fig. 8) and Fly/Desat
Mode (after 2 hours on the surface following a dive).
ATR
To determine whether the Low Battery Condition involves the
Transmitter or Display Module - press the Side (Select) button for
2 seconds while in Surface Mode.
• The Battery icon will be displayed for 3 seconds indicating
the condition of the Display Module's Battery (Fig. 9A).
• If the Transmitter is active and linked to the Display Module,
the Battery icon and the Transmitter icon will then be displayed for 3 seconds indicating the condition of the
ATR
Transmitter's Battery (Fig. 9B).
• The display will then revert to Surface Mode.
• If 75 % of the Rated Power has been consumed (Low Battery
Condition), the Battery icon will only display 1 bar inside the
shell and it will flash as a warning that the Battery is to be
replaced prior to conducting any further dives.
• Battery condition cannot be checked during Dive Modes.
• If the unit did not display a Low Battery Condition prior to
ATR
entering the Dive Mode, and a Low Battery Condition occurs
during the dive, there will be sufficient Battery power to
maintain unit operation for the remainder of that dive.
FO2 MODE
After Activation, the VT Pro will operate as an Air computer
without displaying information associated with oxygen calculations, unless it is set for a percentage of oxygen (FO2) other than
Air (a numerical value between 21 and 50 %).
When set with an FO2 value of 'Air' (Fig. 10), the VT Pro will
perform calculations the same as if FO2 were set for 21% oxygen, internally accounting for oxygen loading for any subsequent
Nitrox dives. However, oxygen related displays, warnings, and
the O2 Bar Graph will not appear on the display for that dive, or
subsequent dives, unless FO2 is set for a numerical value (21 -
50).
Once a dive is made with the unit set as a Nitrox Computer (FO2
set for a numerical value), it cannot be programmed to operate
as an Air Computer until 24 hours after the last dive. 'Air' will
not be displayed as an option in the FO2 Mode. However, you
can set FO2 for 21% for use with Air.
When FO2 is set at a value of 21% (Fig. 11), the unit will
remain set at 21% for subsequent nitrox dives until FO2 is set to
a higher value, or until it automatically turns off and is reactivated.
O
2
Fig. 10 - FO2 set for Air
O
2
Fig. 11 - FO2 set at 21%
ATR
ATR
19
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2
Fig. 12 - FO2 Default ON
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2
Fig. 13 - FO2 Default OFF
20
FO2 50% Default
If the Default function is set to ON (Fig. 12) and FO2 is
set to a value 'greater than 21%', the FO2 set point value will
automatically revert to 50% 10 minutes after that dive. The
Maximum Depth that can be achieved with a PO2 of 1.60 ATA
will also be displayed.
ATR
• FO2 must therefore be reset for each repetitive nitrox dive,
or the value will automatically 'default' to 50(%) and the
dives will be calculated based on 50% O2 (50% nitrogen)
for oxygen calculations and 21% O2 (79% nitrogen) for
nitrogen calculations.
If the Default function is set to OFF (Fig. 13), the FO2
value for repetitive dives remains the same as previously set until
the set point is manually changed.
WARNING: When the unit shuts off, the FO2 set
point will default to AIR regardless if the 50% Default
is set ON or OFF. Always set, or verify, the FO2 set
point prior to each nitrox dive.
Setting FO2 for a nitrox dive is described on page 27.
ATR
WARNING: Prior to diving with the VT Pro, you
must also read and understand the Oceanic Dive
Computer Safety and Reference Manual which
provides Important Warnings and Safety Recommendations as well as general product information.
SETUP AND ACTIVATION
21
PRESSURE TRANSMITTER
Before you dive with the VT Pro, you will need to become familiar with the interactive
features and select desired settings. The Transmitter must be installed into the High Pressure
port of your Regulator First Stage, facing to one side (Fig. 14). Oceanic strongly recommends that installation be performed by an Authorized Oceanic Dealer at the time of
purchase. Instructions are provided on Page 92.
NOTE: The Transmitter is compatible with all Oceanic First Stages, but cannot
be guaranteed to fit certain models produced by other manufacturers. Check
with your Authorized Oceanic Dealer to verify compatibility with your Regulator First Stage.
For the Display Module to receive a Tank Pressure signal from the Transmitter, the 2 devices
must first be Linked. The Serial Number (code) of the Transmitter must be entered as the
Link Code in the Display Module.
The Link Code is preset when shipped from the factory. To verify
the Code, refer to Page 43.
ACTIVATION
Before activating the Display Module, the regulator containing
the Transmitter must be connected to a Tank and pressurized by
Fig. 14 - Transmitter
mounted on First Stage
slowly opening the Tank Valve. Tank Pressure of 50 PSI (3 BAR)
is required for the Transmitter to activate and send a signal.
22
To Activate the VT Pro -
O
2
FEET
DEMO
ATR
5
10
20
30
40
50
60
0
O
2
PSI
BAR
M
MAX
O
2
M
A
X
• position the Display Module within 3 feet (1 meter) of and
parallel to the Transmitter (Fig. 15), holding it in this location
during activation.
• press and release the Front (Advance) Button.
• Upon manual activation, the unit will enter Diagnostic Mode
(Fig. 16), displaying all segments of the LCD as 8's, followed
by dashes (- -), then a countdown from 9 to 0. A single beep
will be emitted to indicate completion of the check. Diagnostic Mode checks the display, coded Transmitter frequency
Link, and battery voltage to ensure that everything is within
tolerance and functioning properly.
• After manual activation, it will also check the ambient barometric pressure, and calibrate its present depth as zero. At
elevations of 2,000 feet (610 meters) or higher, it will
recalibrate itself to measure depth in feet of fresh water
instead of feet of sea water.
WARNING: If the unit is manually activated at elevations higher than 14,000 feet (4,267 meters), it will
perform a diagnostic check followed by immediate
shutdown.
Fig. 15 - Positioning
during Activation
Fig. 16 - Diagnostic Mode
23
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2
Fig. 17 - Loss of Link
(on surface)
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2
Fig. 18 - Serial Number
24
During the Diagnostic check, Battery voltage of both the Display
Module and Transmitter are verified to determine if sufficient
voltage is available to maintain operation.
If there is not sufficient voltage for the Display Module, the unit
will deactivate. If there is not sufficient voltage in the Transmitter,
PSI
the Link icon and a Pressure value of 000 PSI (BAR) will flash (Fig.
ATR
17). This could also indicate one of the following conditions:
• The Transmitter was not pressurized prior to activation.
• The Display Module was not positioned in close proximity, or
parallel, to the Transmitter during activation.
• The Display Module was not set with the correct Link Code.
If the Transmitter signal is lost while on the surface, the Display
Module will stop searching for the signal after 10 minutes to save
its Battery power. The signal will automatically be restored upon
descending on a dive
Identification of the Display Module
To view a screen that displays the Display Module's serial number and firmware revision level, press and hold the front (Advance) button just before the Diagnostic countdown reaches 00.
An External Access request is initiated and the Serial Number
screen appears for as long as the button is held depressed (Fig.
18). Upon releasing the button, the unit shuts Off. Press the
ATR
button again to reactivate the Module.
Backup Activation (only if Water Activation is set ON)
ATR
PSI
O
2
As a backup, the VT Pro will also automatically activate by water
contact. This is accomplished by bridging the gap between
contacts located on the Button stems and download Data Port.
The graphic H2O will be displayed as an indication that the
Module is wet.
If no dive is made within 2 hours after activation, the Display
Module will automatically deactivate. If the wet contacts are still
wet, it will reactivate and display the H2O graphic.
SURFACE MODE
Surface Mode, identified by the Surface Time icon (Fig. 19a),
follows Diagnostic Mode after Activation. Information includes
Dive Number '0' (no dive made yet), Temperature (and icon),
Time of Day (with icon), Surface Time (with colon flashing), and
Tank Pressure with graphic.
NOTE: If the unit is wet (contacts are bridged), the
graphic 'H2O' will appear in place of the dive number
(Fig. 20). After the unit is rinsed and dried, '0' will
replace 'H2O'.
To activate the Backlight:
• press the Side (Select) button.
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2
Fig. 19 - Surface Mode
Fig. 20 - Surface Mode
PSI
(unit dry)
(unit wet)
a
ATR
25
Accessing Other Modes
While in the Surface Mode you can access various other Modes
that are described in detail throughout this manual.
SET MODE #1
FO2 (for a Nitrox dive)
Max Depth alarm
Elapsed Dive Time alarm
PC (for download)
SET MODE #2
Units of Measure
Hour Format
Hour
Minute
Year
Month
Day
Audible alarm
Max TLBG alarm
ATRBG alarm
Turn Pressure alarm
End Pressure alarm
Dive Time Remaining alarm
Max PO2 alarm
FO2 Default
Backlight Duration
Sampling Rate
Gauge Mode
Water Activation
Link Code
26
• Press the Front (Advance) button to access a sequence that
includes Plan, Fly, DeSaturation, and Log Modes.
• Press the Side (Select) button to activate the Backlight.
• Press Both buttons (simultaneously) to access Set and Simulator Modes.
SET MODES
Settings are divided into 2 categories. Set Mode #1 includes
several settings that you would change more often and Set Mode
#2 includes those items not likely to change once you set them.
Set Mode 2 can be accessed by first entering settings in Set
Mode 1, or by bypassing Set Mode 1. Sequence is at the left.
Settings can be made one after the other, or you can access a
specific item that you want to set, bypassing others. Set points
can be advanced by scrolling (press/hold) or one increment at a
time (press/release less than 2 seconds).
To return to the Surface Mode at any time, simultaneously press
and hold Both buttons for 2 seconds.
Set Mode Access Timing
While in Surface Mode, press Both buttons simultaneously and
hold -
• after 2 seconds, SET: 1 appears (Fig. 21)
• after 2 more seconds, SET: 2 appears (Fig. 22)
• Access is gained by releasing the buttons during the 2
second window in which SET: 1 or SET: 2 appears, then
pressing the Front (Advance) button.
• If the buttons are held longer, and SET 1 and 2 are both
bypassed, the unit will go to Simulator (Demo) Mode which is
described on page 75.
• While in the Set Mode, if neither button is pressed during a 2
minute period, the unit will revert to Surface Mode.
ENTERING SETTINGS -SET MODE #1
TO SET - FO2 (while in the Surface Mode)
Factory set for AIR, FO2 can also be set to values between 21
and 50% in increments of 1%.
• Press Both buttons simultaneously, release when SET: 1
appears (2 seconds).
• Press and release the Front (Advance) button, FO2 appears
with the set point value flashing (Fig. 23).
O
2
Fig. 21 - Set 1
O
2
Fig. 22 - Set 2
O
2
Fig. 23 - Set FO2
ATR
ATR
ATR
27
a
O
2
Fig. 24 - FO2 Set at 32%
O
2
Fig. 25 - Set Max Depth
28
FEET
MAX
• Press and release the Side (Select) button repeatedly to
increase the FO2 value from 21 to 50% in increments of 1%,
then display AIR again; - or - Press and hold the Side (Select)
button to scroll from AIR to 32%, then press and hold again to
scroll from 32 to 50%, then AIR.
• For each FO2 value that appears, the display indicates the
ATR
Maximum Depth that can be achieved for a PO2 of 1.60
ATA (Fig. 24a), or the PO2 Alarm set point. If FO2 is set for
AIR, no Depth value is displayed.
• Press the Front (Advance) button to accept the setting and
advance to Set Depth Alarm, or press and hold Both buttons
for 2 seconds to revert to Surface Mode.
TO SET - MAX DEPTH ALARM (while in the Surface Mode)
Factory set for 330 feet, the Alarm can be set to values between
30 feet (3 meters) and 330 feet ( 99 meters) in increments of 10
feet (3 meters).
• Press Both buttons simultaneously, release when SET: 1
appears (2 seconds).
• Press and release the Front (Advance) button, FO2 appears
with the value flashing.
• Press the Front (Advance) button 1 more time.
• The graphics FEET MAX and dEEP, and Alarm icon appear
ATR
with the Max Depth set point value flashing (Fig. 25).
• Press and release the Side (Select) button until the desired
Depth Alarm value appears; or press and hold to scroll
through the set points.
• Press the Front (Advance) button to accept the setting and
advance to Elapsed Dive Time Alarm, or press and hold Both
buttons for 2 seconds to revert to Surface Mode.
TO SET - ELAPSED DIVE TIME ALARM
(while in the Surface Mode)
Factory set for 3:00 (hr:min), the Alarm can be set to values
between 0:10 and 3:00 (hr:min) in increments of 5 minutes.
• Press Both buttons simultaneously, release when SET: 1
appears (2 seconds).
• Press and release the Front (Advance) button, FO2 appears
with the set point value flashing.
• Press the Front (Advance) button 2 more times.
• The graphic EdT, and Alarm and Dive Time icons appear
with the Elapsed Dive Time value flashing (Fig. 26).
• Press and release the Side (Select) button until the desired
Alarm value appears; or press and hold to scroll through the
set points.
• Press the Front (Advance) button to accept the setting and
advance to PC Interface, or press and hold Both buttons for 2
seconds to revert to Surface Mode.
O
2
Fig. 26 - Set Dive Time
ATR
29
For more information
regarding PC
Interface, refer to
page 73 of this
manual and to
documents provided
with the OceanLog
PC download
product.
O
2
Fig. 27 - PC Download
30
PC INTERFACE
PC Interface is not a setting, it is included in the Set 1 menu for
easy access when data is to be downloaded (copied) to the PC
download software program for storage and viewing.
To download data (while in the Surface Mode)-
• Press Both buttons simultaneously, release when SET: 1
appears (2 seconds).
• Press and release the Front (Advance) button, FO2 appears
with the set point value flashing.
• Press the Front (Advance) button 3 more times.
• The graphic PC appears with a 120 second countdown timer
(Fig. 27). Download must be initiated before the timer
reaches 00 (within 2 minutes).
• Download is initiated by the external device requesting data
transfer (i.e., the PC download program).
• The unit reverts to Surface Mode after completion of the
Download operation, or after 2 minutes if neither button is
pressed.
ENTERING SETTINGS - SET MODE #2
These settings are ones that are not likely to change. To save
ATR
time at the dive site, verify the set points and adjust them as
desired prior to departing on the day's dive trip.
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