VR Technology VR Series User manual

VR Technology Limited
To ensure your user information is up to date. Please check
www.technologyindepth.com for updates to this manual.
VR Series Dive Computer Manual
VR Dive Computer Operations Manual 2009 rev E 28/01/2009
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VR Technology Limited
Model Name
VRX/VR3
Manufactured by
VR Technology Limited
Unit 12 Blackhill Road West
Holton Heath Industrial Estate
Poole
Dorset
BH16 6LE
England
UK
WARNING
Diving is an adventurous sport and should not be
undertaken without receiving the necessary training
from a recognised training agency.
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Table of Contents
Model Name...................................................................................................................2
Manufactured by............................................................................................................2
Getting Started...............................................................................................................7
Battery............................................................................................................................7
Power Monkey charging option (VRx)..........................................................................8
Switches.....................................................................................................................8
Home Screen..................................................................................................................9
The Home Screen features.........................................................................................9
Understanding Our PIN Upgrade System......................................................................9
How to enter a PIN ..................................................................................................11
Security and Trace-ability........................................................................................11
The Home Screen – Navigation via Mini Screen Feature ...........................................12
Pre Dive Check........................................................................................................12
Time & Date Screen.................................................................................................13
Powering up the VR.....................................................................................................13
Decompression Algorithms .........................................................................................14
The Dive Options Screen.............................................................................................15
XFunc...........................................................................................................................15
XDec........................................................................................................................15
BG (Big Graphics) optional PIN..................................................................................17
Light.............................................................................................................................17
Stops.............................................................................................................................17
Torch (VRx).............................................................................................................17
Screen Saver (VRx) .....................................................................................................20
Gas Calculator Mode (option) .....................................................................................20
OPTIONS.....................................................................................................................21
Language......................................................................................................................21
Games (option).............................................................................................................22
PC Link........................................................................................................................22
Simulate .......................................................................................................................22
Dive plan......................................................................................................................22
GAS LIST....................................................................................................................23
Bailout! A Special Note on Profile B for CCR Divers................................................24
GAMES (option)..........................................................................................................25
THE OCTOPUS GAME..........................................................................................25
DECOBOOKS AND MORE GAMES........................................................................25
DECOBOOKS.........................................................................................................26
Buddies Game..........................................................................................................26
Wreck Find Game....................................................................................................26
SETUP .........................................................................................................................27
Units.........................................................................................................................27
Safe ..........................................................................................................................27
PIN...........................................................................................................................28
CNS..........................................................................................................................28
LCD..........................................................................................................................28
NORMAL ............................................................................................................29
HILITE.................................................................................................................29
MENU..................................................................................................................29
HEADER .............................................................................................................29
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MAIN-HD............................................................................................................29
MAIN-GR............................................................................................................29
MAIN-TP.............................................................................................................29
MAIN-BM ...........................................................................................................29
GRAPH................................................................................................................29
SCROLL..............................................................................................................29
SCR RB................................................................................................................29
Mode........................................................................................................................30
Prog..........................................................................................................................30
ALG .........................................................................................................................31
Automatic tissue tolerance adjustments.......................................................................31
User adjustments......................................................................................................31
Extreme exposure dives...........................................................................................33
Algorithm Selection.................................................................................................33
Diveplan and diving.................................................................................................34
VGM - Decompression philosophy.............................................................................35
Summary..................................................................................................................36
Usage........................................................................................................................37
NO STOP.....................................................................................................................37
FLY TIME...................................................................................................................37
SELECT and ADJUST gases.......................................................................................38
Selecting closed circuit gases and PO2 Set point ........................................................40
A Note on the MOD setting and Gas Switches............................................................41
A Closed Circuit Dive Planning Example...................................................................41
Display Modes Screen .................................................................................................42
An Explanation of the Options in the Display Modes Screen.....................................42
Flip/ twist (Vrx) .......................................................................................................42
Display modes..............................................................................................................42
Automatic display flip..............................................................................................42
Twist mode for mini screen jumping.......................................................................43
Deco.........................................................................................................................43
MaxD .......................................................................................................................43
AvgD........................................................................................................................43
nst.............................................................................................................................43
C (or F).....................................................................................................................43
tts..............................................................................................................................43
cns............................................................................................................................43
Ceiling Icon..............................................................................................................43
Log Screen...................................................................................................................43
Graph........................................................................................................................44
Markers....................................................................................................................45
Calendar...................................................................................................................45
How to read the Dive Screen.......................................................................................46
Closed Circuit Diver – No Decompression Screen..................................................47
Open Circuit Diver – Decompression Screen..........................................................48
Closed Circuit Diver – Decompression Screen .......................................................49
More Closed Circuit Dive screens...........................................................................50
How to Switch Gases during a Dive........................................................................51
Changing or Adding a New Gas During a Dive..................................................52
Going from the Main Dive Screen to Other Dive Screens ......................................53
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Warnings..................................................................................................................54
Rebreather related warnings ....................................................................................56
Rebreather & Analyser Links ......................................................................................56
How to use your Open Circuit VR as an Oxygen Analyser using the C8b Oxygen
Analyser Kit.................................................................................................................57
Special Calibration Procedures for Closed Circuit VRs..............................................58
Analysing a Gas...........................................................................................................60
Semi Closed Rebreather cable link..............................................................................61
Semi Closed Rebreather Warnings..............................................................................62
Using a Closed Circuit Rebreather cable link..............................................................63
Calibration................................................................................................................63
Closed Circuit Diving Operation.................................................................................66
VR Calibration with a CCR at Altitude.......................................................................67
Oxygen Sensors ...........................................................................................................68
Warranty and Support..................................................................................................69
Warranty ..................................................................................................................69
Service......................................................................................................................69
User Feedback..........................................................................................................69
Suggestions..............................................................................................................69
Planned Upgrades ....................................................................................................69
Warranty & Support Guidelines ..................................................................................70
Returns.................................................................................................................71
Warranty ..................................................................Error! Bookmark not defined.
Impact or accidental damage .......................................................................................71
No Fault Found............................................................................................................71
Maintenance Tips.........................................................................................................72
The bulkhead I/O connector port.............................................................................72
Switch Maintenance.................................................................................................72
Specifications...............................................................................................................72
Bezel Colours...........................................................................................................73
WARNING!
Even if your dive computer or PC generated software allows for less
conservatism and a reduction in decompression times this should not
be arbitrarily undertaken without first researching data available from
other divers/agencies, conducting controlled trials and understanding
that you may be undertaking a level of experimentation in order to adjust
the algorithm for your specific needs.
No decompression algorithms can give a guaranteed safe
decompression. It is your responsibility to be trained, dive safely, carry
backup tables and instrumentation and compare any decompression
profiles generated by the VR range of computers and their associated
decompression software against established diving tables with which
you are happy and/or accept that you may be conducting experimental
decompressions.
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Congratulations on your purchase of a VR dive computer.
You are going to have a lot of fun learning how to use your new VR.
Your VR has been delivered to you in G10 mode. This is the latest version of VR
software and, we believe, represents a considerable advance over earlier versions.
If you prefer, you can run the VR in G3 mode which is almost identical to G10 mode
but only allows you to preset three gases in the gas list and has a simpler user
interface.
You can also operate the computer in X10 mode which takes the VR back to the 2007
version of the software (see website for details, Support, manuals). This might be
preferred by VR owners with long experience of the computers and who have reached
the point where they have an instinctive acquaintance with the way the computer used
to work and prefer not to learn new navigation techniques.
Your VR is delivered to you in multicolour mode. If you have ordered the multicolour
upgrade from new then of course multicolour mode will be permanent. If you have
ordered a single colour VR you will be able to enjoy multicolour mode for your first
three dives so you can see what it looks like before your computer reverts to single
colour mode. If you then decide you preferred multicolour mode just call your dealer
and buy the multicolour upgrade PIN and install it.
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Getting Started
Looking at the computer (image below) in your hand
Battery
The VRX is fitted with a rechargeable Lithium-ion battery. A multi-voltage charger is
supplied, that will recharge a completely flat battery in approximately 3 hours.
The VR3 uses a user-replaceable 1.5v to 3.6v battery system. Alkaline or lithium
batteries can be used. Access is via the battery cap on the side with the cap key
supplied.
The battery level is shown in percentage (VRx) or volts (VR3) on the main front dry
screen. A full battery will give the approximate performance below:
Note all times are
approximate VRx - 4.2v
Lithium
Ion
VR3 - 1.5v
Alkaline
(lithium
batteries will
give longer
duration)
Sleep no use 6 months
12 months
On time with backlight on 10 hours
20 hours
On time with backlight off 20 hours 40 hours
On time with torch and
backlight on 8 hours
NA
The VRx battery comes with a 4-year warranty. The lithium battery can also be
serviced and replaced at the factory. Do not take the VR apart or change the
battery yourself. Warranty is void if the VR has been opened or tampered with.
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Power Monkey charging option (VRx)
We are pleased to announce our association with Power Traveller who make a superb
range of mobile charging products. With our special adaptor, you can charge your
VRx with their Power Monkey detailed here. The Power Monkey will also charge
your mobile phone and most MP3 and MP4 products. The Power Monkey itself can
be charged from its own world wide mains supply, or its’ Solar Cell or a computer
USB port. Please visit the Power Monkey web site for full details. The VRx adaptor is
only available when buying the Power Monkey option from VR Technology Ltd -
Part# 2014.
Switches
On the left and right at the bottom are two black plastic slide switches which you use
to navigate your way through the functions of the computer either on the surface or
underwater.
The switches work in four ways, as follows:-
1. A short push and release of one switch
2. A push and long hold of one switch (hold the switch in until the screen changes.)
3. A short push of both switches.
4. A long push and hold of both switches (again, hold the switches in until the screen
changes.)
In some cases 3 and 4 are shown as < > with the option between the arrows.
Your VR is activated by pushing and holding either switch. The first screen to be
displayed will be the Home screen.
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Home Screen
Note. The battery indicator on the VR3 will show a voltage (lithium battery
shown) whereas the VRx will have a % remaining display.
The Home Screen features
The current active gas, (top left hand corner)
The current remaining battery percentage, (bottom left)
A BAT LOW advisory when the battery voltage is low. The battery should be
changed/charged before diving..
The Pre Dive Check mini screen feature, (on Start Up the log screen shows
first, giving you a profile of your most recent dive.)
A gas bottle graphic in the bottom left corner
A menu graphic in the bottom right corner
A GO graphic in the centre at the bottom
Understanding Our PIN Upgrade System
VRX Dive computers come configured with the external oxygen sensor port turned on
and can monitor one oxygen sensor. All VRx’s are capable of being able to be PIN
upgraded to monitor 3 oxygen sensors. In some cases a return to factory may be
required to activate the feature.
Note: A new VRx 3 sensor cable will be supplied with the PIN. Single sensor cables
will not work with a 3 sensor VRx. Older single sensor cables can be converted to
VRx single sensor cables at factory or by applying for wiring information (work
should only be carried out by suitably qualified technician). Modified cables will not
work with VR3’s.
VR3’s do not have the external port turned on and can be upgraded via the PIN
system to monitor one oxygen sensor.
If you bought your VR and wish to upgrade with a new PIN, please contact us or your
dealer to purchase the PIN. Pin information can be found on white strips attached to
the plastic CD envelope that came with the computer. Please keep a note of these
PINs, and any other PINs you subsequently purchase, in a safe place.
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To activate the purchased level and features, enter the 16 digit PIN(s) following the
procedure outlined below. To purchase further level upgrades or activate additional
features, contact your VR Computers dealer. So that the dealer can give you the
correct PIN(s), when you make the purchase you will need to provide the unique 16
digit serial number of your VR. This Serial Number is on line 4 of the Pin screen
which can be found in the SETUP menu.
The SETUP menu is accessible via the mini screen feature in the Home screen.
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How to enter a PIN
PINs are keyed in using the switches and are logged in on the bottom line of the Pin
Num screen. A short push on a switch will move the number highlighted by 1; a long
hold will move it by 8. When keying in each digit or letter move forwards using the
right hand + switch. Do not move backwards using the left hand - switch except to
correct, as this may cause previously entered numbers to change. After you have
keyed in the last digit of your PIN there will be a pause before the cursor moves to the
top of the screen you can use the left and right switches to key in your name and
phone number, or any other data you wish, in order to identify the VR computer as
yours, (see below).
After a PIN has been successfully installed the bottom line of the screen will revert to
16 zeros.
Security and Trace-ability
A key benefit of the PIN system is the security and trace-ability it offers. In order to
change or remove the identifying particulars you have installed, someone would need
one of your PINs so keep them in a safe place away from your VR. Then, if your
computer is ever lost or stolen, notify us and, as your identifying particulars will still
be there on the screen, we can look out for it in the event that it ever comes in to us
for repair or upgrade. Also don’t forget to write to us and register ownership via our
website, www.technologyindepth.com/vrx.html. If you lose your PIN(s), we can only
reissue them to you if we have you listed as the owner. If you should ever sell on your
computer, you will need to give the new owner the PINs so that the security
information can be changed.
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The Home Screen – Navigation via Mini Screen Feature
Pre Dive Check
The Mini Screen feature in the Home Screen is designed primarily to make it easy for
you to check the settings in your VR and allow you to change any of the settings if
necessary before you dive. The mini screen shows a small version of the actual menu
you will go to by selecting <GO>. All menu screens can me activated by doing along
hold on the right button when the menu icon is displayed.
A short push on either the right or left switch will allow you to move through the mini
screens one by one. Again, a short push of both switches <GO> will expand
whichever mini screen is currently showing and allow you to change settings within
the screen.
The mini screens appear in the following order with successive short pushes of the
right hand switch
Log
Gas List
Dive Options
Fly Time
Set Up
Display Modes
Time & Date
No Stop Plan
Gas Calculator (a PIN upgrade option: see Gas Calculator Section)
Oxygen Sensor (a PIN upgrade option: see Rebreather Link and Oxygen
Analyser sections)
A long push of the left hand switch at any time in the Home Screen will take you into
the Gas List so you can set up, select or adjust the gas mixes you are planning to dive
with as well as set your computer to open circuit or closed circuit decompression
calculations.
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A long push of the right hand switch will take you into the Options Menu which will
give you access to five further features, as follows
Time & Date Screen
Mini Screen Full Screen
The VR is accurate to the European PREN standard for digital dive timing devices but
it is not a precision chronograph. You may need to adjust it occasionally in order to
display the correct time.
Changing the time will not affect desaturation calculations.
A short push of the right switch + will increment the highlighted field by one, a long
push by ten.
A short push of the left hand switch will decrement the highlighted field by one, a
long push by ten.
A short push of both switches together will move the highlight to the next field.
A long push of both switches will exit the screen, save the changes and return you to
the home screen.
Powering up the VR
It is not necessary to power up the VR before you dive. The screen will automatically
power up within a minute of exposure to an absolute pressure of 1.3 Bar or greater.
Note: This means in practice that if you do a very fast descent the VR computer may
not switch on until you are at depth.
If you want the screen to be on from the moment you enter the water, power up the
VR before you dive by pushing either switch once and either switch again. The screen
will stay active for 5 minutes. (On the surface, if no switch is pushed the VR will turn
itself off after about a minute to save power.)
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Decompression Algorithms
VR dive computers use a derivative of the Buhlmann ZHL 16 algorithm modified to
assimilate the latest thinking in practical micro-bubble avoidance for enhanced
decompression safety.
The VRx can also be configured to use our new VGM algorithm (see description at
the end of this manual and on our website).
You will note that on all decompression dives, the Buhlmann algorithm will prompt
for deep-water controlling stops of 2 minutes in duration. Deep-water stops are
recognised by their duration (normally two minutes) and a + next to the time. It is
important that these stops are conducted correctly for a safe decompression as they
help to reduce the problems associated with potential micro-bubble growth during an
ascent.
Should a microbubble stop be missed, a “Use tables” message will appear. The
decompression schedule displayed thereafter, although very close to the required
duration, may be in error. If this occurs consult backup tables and add additional stops
or stop time as required. While continued diving with the VR is possible, the
decompression displayed may not be exact. “Use tables” will show for 24 hours.
A major advantage is that after activating the VGM upgrade you still have access to
the original Buhlmann algorithm and can even switch between the two algorithms
from dive to dive if you wish depending on the type of diving you are doing. This is
possible because although the decompression profile on your VR screen reflects only
the selected algorithm, the computer still records tissue and bubble states using both.
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The Dive Options Screen
VR3 VRx
In surface mode, the Dive Options (DVo) screen is accessible from the Home Screen,
(toggle through the mini-screens).
Underwater, the Dive Options (DVo) screen is accessed by a long push of the right
button and a short push of both switches when you are in the second dive screen. You
get to the second dive screen from the main dive screen via a long push on the right
switch.
The screen allows the diver to get quick access to a number of useful, controllable
features.
In this screen, a short push of both switches will move the highlight from one feature
to the next, a short push of either the left - or right + switch will change the setting. If
you do not have a particular feature enabled, the highlight will not land on it.
XFunc
Change XFunc to correspond to the type of sensor connected to the I/O port:
i. OFF = no sensor connected. When no sensors are connected XFunc should
be set to OFF to avoid connector damage.
ii. XO2 = External single PO2 sensor (analyzer or rebreather) connected.
iii. 3XO2 (VRx only) = External 3 sensor PO2 monitoring
XDec
This feature is enabled when you purchase one of our rebreather linking cables and
the relevant software to allow you to track real time decompression via an external
oxygen cell (s). In closed circuit mode the XDec setting controls which PO2 figure is
used in the decompression and tissue updating calculations. (In semi closed mode the
PO2 is reported as an FO2).
To summarise, when XDec = ON the reading from the external sensor is used.
When XDec = OFF the selected gas and internal setpoint are used.
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Warning!
Diving beyond the MOD of the diluent in closed circuit mode / or beyond the
PO2 of the unit is less that the diluent PO2 at depth
Dive computers calculate decompression based on the inert gas partial pressures. This
is the only accurate way to estimate decompression requirements. Decompression
computers are an aid to decompression and backup tables and depth/time
instrumentation should always be carried.
When diving beyond the MOD in closed circuit mode and if the setpoint PO2 of the
unit is less than the diluent PO2 at depth, then the diluent PO2 will be used to drive
the decompression. This is a correct assumption as it is the partial pressures of the
inert gas in the diluent that drives decompression. Alarms on the VR showing the
actual diluent PO2 will display once the diluent/setpoint PO2 level has been exceeded.
As the main concern at this stage is oxygen toxicity then the increased PO2 will
display and the CNS % calculation will be updated until it in turn warns of dangerous
levels. Additional alarms are displayed on our Rebreather product.
If you remain at depth with no additional gas injection, then the PO2 in the loop will
drop (due to metabolism)and the inert gas partial pressures may rise (dependant on the
bodies gas absorption rates) a small amount dependant on the gas volume (and hence
total partial pressure within the loop). At some point the resultant volume drop will
make the loop volume become un-breathable until diluent is added. At this point the
decompression may vary slightly from the decompression displayed on the VR.
However due to gas volumes being absorbed by the body and other factors any
variations that may occur will be minimal. If diluent were added during this static
phase of the dive (as it should be) then the decompression will be as accurate as
possible.
The rise in PO2 (drop in inert gas pressures) will reduce the total time to surface
calculation on the assumption that the PO2 (hence PN2/PHe) will remain constant to
the surface as it is only being predictive based on current facts. Once the depth is
decreased and the PO2 reduces then the calculation and prediction will update.
In the above example, If the decompression is being driven via a sensor linked system
as in a rebreather then the PO2 is always monitored and providing a breathable
volume is maintained, then the decompression will be accurate. However, if the PO2
falls below that of the equivalent for the diluent at that depth, then a warning will
appear. The VR will assume the o2 cell has not been calibrated correctly. Again this is
the most likely result as training agencies and normal dive practice do not allow for
turning of the diluent in a rebreather. Exceeding the MOD/setpoint number will
generate an alarm, warning of this unsafe practice.
Having a diluent that has a sufficiently low PO2 at the MOD to allow the rebreather to
be flushed to confirm sensor operation or reduce the PO2 in the loop is a safe practice.
Decompression computers calculate decompression requirement based on the inert
gas partial pressures. Whether you are above the MOD of a gas or below it this
calculation is the same. In both scenarios additional safety factors are applied to the
decompression calculations to allow for variations in diving practice.
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Diving beyond the maximum operating depth of any gas is dangerous and should be
avoided and is not endorsed by any training agency. Emergency plans and gas should
always be carried to cater for temporary excursions in the event of an emergency.
BG (Big Graphics) optional PIN
(This is only available with the VR in X10 mode.)
When you buy the PIN to activate Gas Calculator mode in your VR (item UG 15) you
also get the PIN for Big Graphics Mode free of charge. This enables you to double the
size of the depth and time digits in the Dive Screen with the VR in X10 mode only.
Note that CNS% and Time to Surface (TTS) information will not appear on the Dive
Screen while Big Graphics Mode is ON. Your No Stop Time (NST) remains visible,
as do your decompression ceiling and time at stop if you are carrying out a
decompression dive.
Light
Switch between three screen backlight modes
Tm............... Light on for 10 seconds at the surface or underwater
On................ Light always on at the surface and underwater
DOn............. Light off at the surface, light on underwater
Stops
Switch between 3 optional final decompression stop depths, 3m, 4.5m and 6m. Should
you wish to decompress deeper then the decompression may take longer than the on-
screen prediction.
Torch (VRx)
The VRX is fitted with an LED torch. The control for this is found in the Dive options
screen. There are three settings:
N = torch always off
Y = torch is always on when the VR is on
A = torch turns on when the VR is on and turned face down. The torch stays
on for 10seconds after the VR is returned to a non-face down position.
T = turns for 1o seconds after any button press
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Dive Options – Gmode
The dive screen graph are at the bottom left can be used to display the dive graph, or
the Total Time to Surface TTS, or external PPO2, if external triple or single cell
option is enabled. To make your choice, go to the Gmode option in the display
options. The three modes are:
Graph = display dive graph
PO2 = display external PO2
TTS = display Total Time to Surface
External PO2
TTS Total Time to Surface
Dive graph
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Triple Po2 monitor – Option (VRx)
A triple PO2 cell monitor for a rebreather can be directly connected to the connector
on the VRx. This option, when enabled makes the following screens and options
available:
Xfunc = 3xo2. This turns on the option. Once turned on, then XDec can be enabled,
and Gmode can be chosen as PO2.
XDec uses the external PO2 level for decompression calculations.
Gmode = PO2 displays the external PO2 in large numbers in the bottom left of the
dive screen.
To allow calibration of the o2 cells, the o2 sensor screen below is enabled and
accessed from the main dry mini screen menu.
Calibration adjustment screen
Enabling the Display modes 3xPo2 option displays all three
cell values in the dive screen.
If the HUD option is also purchased, then it can be turned on
from the second screen of the dive options. To reach this screen toggle to the last
options on the Dvo screen and then toggle once more to this second screen.
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The HUD system comes configured as a PIN and a cable for monitoring 3 oxygen
sensors (green PO2 light) and decompression (red light). The functions are;
Red light Green light
Slow flash Below decompression
ceiling Below Setpoint selected
Fixed light At decompression
ceiling At setpoint
Fast flash Above decompression
ceiling/fast ascent Above setpoint
Screen Saver (VRx)
In 3xPO2 mode and with Screen Saver (2nd Dvo screen) set to ON or timer. The VRx
will automatically revert to the screen saver below. A push of any button will return to
the dive screen.
When at the surface a push of the right button will display sensor millivolts.
A display option for rebreather monitoring is to just show the
external po2 cell readings. This gives a clear, simple display of each cell.
Gas Calculator Mode (option)
You have the option to purchase a PIN to activate this feature. When this mode is
enabled, you can gain access from the Home Screen, (toggle through the mini-
screens). Gas Calculator mode will allow you to work out partial pressure gas fills on
your VR.
To find out what gases you need to add to adjust a gas mix, enter your current
cylinder fill in the HAVE column and the gas mixture you need in WANT. The ADD
BAR column will automatically show the fill pressures to add.
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