heinrichs weikamp OSTC3 User manual
Owner´s manual
Open Source Tauch Computer
Thank you for choosing a heinrichs
weikamp dive computer.
Using open source software for full
transparency, combined with state-
of-the-art hardware and a robust
housing made of aluminum, OSTC3 is
your instrument of choice for technical
diving. Both at scubadiving and
rebreather diving the OSTC3 assists you
with extensive functions and options.
For trimix diving you can use up to ve
gases, in the rebreather mode you can
choose between xed setpoints or the
monitoring with an external sensor.
You can t the deco models to your own
needs. They also use the calculation with
gradient factors, which has become the
standard for technical diving. In addition
the OSTC3 offers an apnea and gauge
mode as well as a digital compass.
The development of the dive computer
of heinrichs weikamp is permanently
going on. Use the rmware updates to
keep your OTSC3 always up to date. Get
it for free at:
www.heinrichsweikamp.com
3
We hope you enjoy diving with your new
OTSTC3 dive computer!
You can use the OSTC3 intuitively. But to
become familiar with its functions and
to use it in the best way, we recommend
you to read this manual carefully.
Contact
For any questions relating to your
OSTC3, please contact us via…
• internet forum:
forum.heinrichsweikamp.com
• E-Mail:
info@heinrichsweikamp.com
• per mail:
heinrichs weikamp
Adlerstraße 7
79098 Freiburg im Breisgau
Germany
Your OSTC3
4
Common advices......................................... 6
Technical status ..................................... 6
About this manual................................ 7
Functions overview............................... 8
Safety Advices............................................10
Requirements .......................................10
Before every dive .................................11
While diving..........................................14
Safe use of the OSTC3........................16
Environmental conditions................17
Before rst use ..........................................18
Handling.................................................19
Modes of operation............................21
Modes of diving ...................................24
Compass calibration............................. 2
Surface Mode.............................................29
Display in surface mode ...................29
Menu functions ...................................31
Logbook ...............................................33
Gas setup ............................................36
CCR Setup............................................42
Simulator ............................................48
Deco mode..........................................53
Settings................................................59
Content
5
Dive mode ...................................................68
Displays in dive mode........................68
Menu functions ...................................73
Gaslist ..................................................76
Setpoint change................................76
Bailout..................................................77
Reset Avr..............................................77
Maintenance ..............................................79
Housing ..................................................79
Bungee....................................................80
Replacing the battery.........................81
Spare parts ............................................83
Readout the dive computer ..................84
USB connection....................................84
Software for the OSTC3.....................86
Updating the rmware .....................87
Technical data............................................89
Disposal........................................................91
6
Technical status
This manual corresponds to the technical
status of OSTC3 and its rmware as of
November 2014.
OSTC3, its rmware and the
documentation are subject to technical
changes without notice.
The OSTC3 rmware (integrated
software) is an ongoing development. To
make the best use of OSTC3, we advise
you to use the latest stable rmware
available on the heinrichs weikamp
website: www.heinrichsweikamp.com
How to update the rmware, please read
page 88.
Standard settings
Unless noted differently, the information
in this manual refers to OSTC standard
settings.
For important settings, the OSTC3 shows
an asterisk * behind the current setting,
if the current setting is different from
the default setting.
Common advices
7
About this manual
Special markings
!Warning
indicates a situation that carries a
signicant risk or injury.
Caution
indicates a situation that carries a risk of
damage to the device.
Note
indicates additional information for
advanced OSTC3 user.
Terms of use
Copyright © heinrichs weikamp
Copying or reusing this manual or parts
of this manual is not allowed without
the written permission of heinrichs
weikamp.
8
Functions overview
Your dive computer OSTC3 assists you
with the following functions:
Display
Diving depth and duration according
to EN 13319, maximum diving depth,
ambient temperature, duration and
depth of planned decostops, time to
desaturation based on diving depth and
duration
Oxygen surveillance in CCR diving (using
the optional hw HUD or the ppO2
monitor)
Additional informations (e.g. tilt-com-
pensated compass, average depth,
stopwatch, ppO2, CNS)
Planning
Congure and check gas mixtures as
well as setpoints and sensor data in
CCR mode, calculate a decoplan in the
simulator
9
Record
Time, duration, depth prole,
temperature, reference pressure and
time of desaturation
10
Requirements
The most important factor for safe diving
is a competent and well trained diver.
This dive computer is intended for
experienced divers. That implies:
It is necessary that your diving education
also included decompression diving.
Sufficient knowledge about the laws
of physics in diving is required. It may
harm your health if you rely on a wrong
congured dive computer.
Do not use this dive computer, if you
don’t know or understand the settings
and displayed information of OSTC3.
If necessary, you must be able to nish
your dive safely without a dive computer.
Don’t adjust decompression parameters
if you are not aware of their meanings.
Safety Advices
11
Before every dive
Plan your dive.
Set up a dive plan independently from
OSTC3 and take it with you when diving.
Make sure that your OSTC3 is ready for
use and correctly configured.
Always conrm the following questions
before diving:
Stable firmware?
Use only stable rmware provided
by heinrichs weikamp. It has been
tested and allows a proper and reliable
performance of OSTC3.
Configured correctly?
Check the settings of your OSTC3. If
necessary, adjust the settings according
to your dive plan and equipment.
12
Battery full?
Check the battery status using the
battery indicator on the display. To ensure
reliable performance throughout your
dive, the battery must be sufficiently
high. A new lithium primary cell (SAFT
LS14500) allows up to 50 hours of
diving, a quality alkaline AA battery (e.g.
Duracell Ultra Power) about 20 hours, a
lithium 1,5V AA battery (e.g. Energizer
E2) about 30 hours.
Device waterproof?
Ensure that the battery compartment
and the USB interface are properly closed
and watertight. Check the housing for
cracks or damages which might allow
water to intrude.
Safely attached?
Make sure that your OSTC3 can be
fastened safely using either the bungees
or a suitable alternative.
13
Display messages?
Check the signals of OSTC3. Do not dive
if your dive computer displays a warning.
Check the cause of the warning.
14
While diving
Take a backup system with you
While diving, always carry a backup
system to measure duration and depth
of your dive independently from OSTC3.
Take the OTSC sport with you on every
repeat dive – don’t lend it to anyone.
A correct calculation of tissue saturation
requires that your OSTC3 is:
• congured correctly
• used on every dive
• only used during your own dives (and
not shared with other divers).
15
Take a sufficiently long surface break
before diving again.
The OSTC3 doesn’t indicate how long to
wait before the next dive. Please follow
the guidelines you were taught during
your dive training.
Caution
Saturation data is lost when updating
the OSTC3 rmware or in the unlikely
event of a failure. In these cases, do not
dive any further until tissue saturation
has returned to normal level.
16
Safe use of the OSTC3
Do not modify the hardware.
Modications to the hardware of OSTC3
can damage its proper function and
can damage the watertightness of its
housing.
Only the bungee backplate and the caps
of the battery compartment and the USB
interface can be removed. There is no
other way to open the housing without
damaging the device.
Only open the battery compartment
when the battery has to be replaced.
Keep your OSTC3 out of children´s reach.
Small parts such as the USB cap may
represent a choking hazard.
Caution
Surpassing the maximum water depth
of 120 metters may cause malfunction
or permanent damage of the device.
17
Environmental conditions
Store the OSTC3 in a cool, dry place.
Permissible temperature range for use
and storage: between -5 °C and 40 °C.
Make sure that the used battery is
suitable for the ambient temperature to
be expected in your dives. For cold water
diving (under 10°C) we recommend the
use of a Lithium battery.
Note
Decompression calculations and depth
display are always based on the actual
surface pressure. So if you are diving in
mountain lakes, no further settings are
needed. OSTC3 automatically adapts to
the actual surface pressure.
18
heinrichs weikamp delivers the OSTC3
ready for use with a high quality lithium
battery (Saft LS14500). If the OSTC3 has
not been used for a long time (more than
one year), it may be necessary to replace
the battery rst.
Before diving, you need to adjust some
settings as described in this manual.
Familiarize yourself with the OSTC3. It is
recommended that you read this manual
carefully.
Before rst use
19
Handling
Operate the OSTC3 with the two
buttons Set/MENU and ENTER on the
left and right side of the housing. The
force required to push the buttons is
independent to ambient pressure. You
can push and hold the button in order to
change a data. You always have to push
only one button.
Push the left button SET/MENU to enter
the menu. To select a menu entry, push
SET/MENU repeatedly until the cursor
marks the required menu item. From the
item on the bottom, the cursor jumps
SET/MENU ENTER
20
back to the top with the next push. To
conrm push ENTER.
In some menus you will nd the entry
more. Select this entry to access the next
menu page with more menu items.
To change the setting of a menu
item, push ENTER repeatedly until the
required value is displayed. You can also
hold-down the ENTER button in order to
change a value.
Wet connector system (optional):
Connect up to three oxygen sensors
using the hwHUD or the ppO2 monitor.
The connection is based on a bre
optic cable that can be removed and
connected also under water.
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