heinrichs weikamp OSTC Series User manual

User manual
OSTC dive computer with the rmware
hwOS sport
OSTC 2 OSTC 2 TR
OSTC plus
EN
OSTC sport

Thank you for choosing a heinrichs
weikamp dive computer!
The rmware hwOS sport which is used in
the dive computers OSTC plus and OSTC 2
is specially made for the demands of recre-
ational divers. It can be operated intuitive-
ly and easily, but yet offers a wide range of
conguration options. Even for challeng-
ing deco dives, the sport edition is a relia-
ble companion. If you want to walk new
paths and develop yourself in technical div-
ing, your OSTC will be your companion. You
can update your OSTC with the rmware
hwOS tech and upgrade your device (Even
the OSTC sport mod. 2019) into a full trimix
dive computer.
Data like logbook information or updates
can be easily transferred with Bluetooth.
Take also notice of the large supply of log-
book programs and other software.
The development of heinrichs weikamp
dive computer is permanently going on.
Use the rmware updates to keep your
OSTC always up to date. Get it for free at:
www.heinrichsweikamp.com
You can use the OSTC intuitively. But to be-
come familiar with its functions and to use
it in the best way, we recommend you to
read this manual carefully.
Additionally you nd some videos on our
homepage and facebook page which offer
some easy explanations (for example how
to change the battery, calibrate the com-
pass or change the bungees).
We hope you enjoy diving with your new
OSTC dive computer!
Your OSTC
For any questions relating to your OSTC, please contact us:
• Internet forum: www.forum.heinrichsweikamp.com
• E-Mail: [e-mail]
• Post: heinrichs weikamp
Adlerstraße 7
79098 Freiburg im Breisgau
Germany
Contact

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Content
1. Common advices....................................................................................................................... 6
1.1. Technical Status ............................................................................................................... 6
1.2. About this manual .......................................................................................................... 6
1.3. Functions overview......................................................................................................... 6
2. Safety advises ............................................................................................................................ 7
2.1. Requirements.................................................................................................................... 7
2.2. Before every dive.............................................................................................................. 7
2.3. While diving ...................................................................................................................... 8
2.4. Safe use of the OSTC....................................................................................................... 8
2.5. Environmental conditions............................................................................................ 8
3. Before rst use........................................................................................................................... 9
3.1. Handling ............................................................................................................................. 9
3.2. Modes of operation.......................................................................................................10
3.3. Modes of diving..............................................................................................................11
3.4. Compass calibration.....................................................................................................12
3.5. Menu functions..............................................................................................................12
4. Surface mode............................................................................................................................13
4.1. Display in surface mode .............................................................................................13
4.2. Settings.............................................................................................................................14
4.2.1. Information........................................................................................................14
4.2.2. Datum Set date and time..............................................................................14
4.2.3. Language.............................................................................................................14
4.2.4. Display settings.................................................................................................14
4.2.5. Adjust buttons ..................................................................................................15
4.2.6. Reset Menu ........................................................................................................15
4.3. Deco setup .......................................................................................................................16
4.3.1. Dive mode...........................................................................................................16
4.3.2. Decotype .............................................................................................................16
4.3.3. Conservatism.....................................................................................................17
4.3.4. Gradient factors...............................................................................................17
4.3.5. Saturation factors ............................................................................................18
4.3.6. Last deco stop....................................................................................................18
4.3.7. Safety stop..........................................................................................................18

5
4.3.8. Future TTS ...........................................................................................................18
4.3.9. ppO2 settings....................................................................................................19
4.4. OC Gas setup...................................................................................................................19
4.4.1. Edit Gas................................................................................................................19
4.4.1.1. Select gas type ................................................................................19
4.4.1.2. Setup mix..........................................................................................20
4.4.1.3. Change depth..................................................................................20
4.6. Simulator..........................................................................................................................21
4.6.1. Calculate a decoplan.......................................................................................21
4.6.2. Start simulator..................................................................................................22
5. Dive mode..................................................................................................................................24
5.1. Display in dive mode ....................................................................................................24
5.2. Menu in dive mode.......................................................................................................25
5.2.1. Gas change (OC) ...............................................................................................25
5.2.2. Stopwatch...........................................................................................................26
5.2.3. Set marker...........................................................................................................27
5.2.4. Bearing/Course .................................................................................................27
5.3. Warnings ..........................................................................................................................27
6. Logbook......................................................................................................................................28
7. Maintenance.............................................................................................................................29
7.1. Housing.............................................................................................................................29
7.2. Bungee ..............................................................................................................................29
7.3. Charging the battery....................................................................................................29
7.4. Changing the battery...................................................................................................30
7.5. Spare parts.......................................................................................................................31
8. Software and Updates...........................................................................................................31
8.1. Bluetooth mode.............................................................................................................31
8.2. Firmware update ...........................................................................................................31
8.3. Software for the OSTC..................................................................................................32
9. Technical data...........................................................................................................................33
10. Disposal ...................................................................................................................................34

6
1.1. Technical status
This manual corresponds to the technical
status of OSTC and its rmware hwOS tech
as of February 2019.
(Firmware hwOS sport 10.52)
OSTC, its rmware and the documentation
are subject to technical changes without
notice.
The OSTC rmware (integrated software) is
an ongoing development. To make the best
use of OSTC, we advise you to use the latest
stable rmware available on our website:
www.heinrichsweikamp.com
1.2. About this manual
Read this manual carefully, so you can set
up and use the dive computer in the right
way. Keep this manual so you can consult
it also at a later time. You also nd the lat-
est version for download as PDF on our
homepage.
Special markings
!Warning
indicates a situation that carries a signi-
cant risk or injury.
Caution
indicates a situation that carries a risk of
damage to the device.
Note
indicates additional information.
Standard settings
Unless noted otherwise, the information
in this manual refers to OSTC standard set-
tings.
For important settings, the OSTC shows an
asterisk * behind the current setting, if the
current setting is different from the default
setting.
Terms of use
Copying or reusing this manual or parts
of this manual is not allowed without the
written permission of heinrichs weikamp.
1.3. Functions overview
Your dive computer OSTC assists you with
the following functions:
Display: Diving depth and duration accord-
ing to EN 13319, maximum diving depth,
ambient temperature, ambient pres-
sure, bottom time, duration and depth of
planned deco stops, time to desaturation
based on diving depth and duration.
Additional informations: tilt-compensated
compass, average depth, stopwatch, ppO2,
CNS.
Planning: Congure and check gas mix-
tures as well as setpoints in CCR mode, cal-
culate a deco plan in the simulator.
Record: Time, duration, depth prole, tem-
perature, reference pressure and time of de-
saturation.
1. Common advices

7
2.1. Requirements
The most important factor for safe diving is
a competent and well trained diver.
This dive computer is intended for experi-
enced divers. That implies:
A diving education including decompres-
sion diving is mandatory. Sufficient know-
ledge about the laws of physics in diving
is required. It may harm your health if you
rely on a wrong congured dive computer.
Do not use this dive computer, if you do not
know or understand the settings and dis-
played information of the OSTC.
If necessary, you must be able to nish your
dive safely without a dive computer.
Do not adjust decompression parameters if
you are not aware of their meanings.
2.2. Before every dive
Plan your dive.
Set up a dive plan independently from OSTC
and take it with you when diving.
Make sure that your OSTC is ready for use
and correctly congured.
Always conrm the following questions be-
fore diving:
Stable rmware?
Use only stable rmware provided by hein-
richs weikamp. It has been tested and al-
lows a proper and reliable performance of
OSTC.
Congured correctly?
Check the settings of your OSTC. If neces-
sary, adjust the settings according to your
dive plan and equipment.
Battery full?
Check the battery status using the battery
indicator on the display. To ensure reliable
performance throughout your dive, the sta-
tus of the rechargeable battery must be suf-
ciently high. We recommend to recharge it
at 20 percent of performance at the latest.
If you use an AA battery for your OSTC plus
you should also replace it at 20 percent of
performance.
Device waterproof?
The models OSTC 2 and OSTC 2 TR are com-
pletely closed and have no openings that
could cause leakages. But for safety check
the housing for cracks or damages which
might allow water to intrude. For OSTC plus
(battery compartment), OSTC cR (S8 con-
nector) and older models with USB port
check if all openings are closed.
Safely attached?
Make sure that your OSTC can be fastened
safely using either the bungees or a suita-
ble alternative.
Display messages?
Check the screen of the OSTC. Do not dive
if your dive computer shows a warning.
Check the cause of the warning.
2. Safety advices

8
2.3. 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 OSTC.
Take a sufficiently long surface break be-
fore diving again.
The OSTC doesn’t indicate how long to wait
before the next dive. It just shows the du-
ration time of the interval. Please follow
the guidelines you were taught during your
dive training.
Take the OSTC with you on every repeat
dive – do not lend it to anyone.
A correct calculation of tissue saturation re-
quires that your OSTC is:
•conguredcorrectly
•usedoneverydive
•onlyusedduringyourowndive(andnot
shared with others)
!Warning
Saturation data is lost when updating the
OSTC 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.
2.4. Safe use of the OSTC
Do not modify the hardware. Modications
to the hardware of OSTC can damage its
proper function and the watertightness of
its housing.
Only the bungee backplate, the cap of the
battery compartment (OSTC plus) and the
cap of the S8 connector (OSTC cR) can be re-
moved. There is no other way to open the
housing without damaging the device.
Keep your OSTC out of children´s reach.
Small parts such as the battery cap (OSTC
plus) may represent a choking hazard.
Caution
Surpassing the maximum water depth of
120 meters may cause malfunction or per-
manent damage of the device.
2.5. Environmental conditions
Store the OSTC in a cool, dry place.
Permissible temperature range for use and
storage: between -5 °C and 40 °C.
Maximum water depth for operation:
120 meters.
If you use an AA battery for the OSTC plus:
Make sure that the used battery is suitable
for the ambient temperature to be expect-
ed in your dives. For cold water diving (un-
der 10°C) we recommend the use of a Lith-
ium battery.
Note
Decompression calculations and depth are
always based on the actual surface pres-
sure. So if you are diving in mountain lakes,
no further settings are needed. OSTC auto-
matically adapts to the actual surface pres-
sure.

9
heinrichs weikamp delivers the OSTC ready
to use. But nevertheless check the battery
status before using it the rst time.
The OSTC is attached to the arm with bun-
gee. The bungee is already installed (Bun-
gees, page 37). To tighten the bungee, make
a knot above the circular cavity. Cut remain-
ing bungee and use a lighter to melt the
small remains of nylon.
3.1. Handling
Operate the OSTC with the two piezo but-
tons on the left and right side of the hous-
ing. A short press is enough to trigger the
buttons. You can adjust individually how
sensitive the buttons shall react (look for
page 16).
To turn on the OSTC, press one of the two
buttons. If the OSTC does not wake up at
once, it is in deep sleep mode (look for next
page). To wake it up, press the button once
more after 5 seconds.
From start screen you can scroll the cus-
tom view in the middle with the right but-
ton (View) and enter the menu with the left
button (Menu). Inside the menu you can
scroll the items with the left button (NEXT)
and conrm with the right button (ENTER).
You only have to press one button at a time.
From the last item on the bottom, the cur-
sor jumps back to the top with the next
press.
In some menus you will nd the entry
MORE. Select this entry to access the next
menu page with more menu items. To quit
the menu or submenu, choose EXIT.
To change the setting of a menu item, press
ENTER repeatedly until the required value is
displayed. For important settings that vary
from the default values, the OSTC shows an
asterisk * behind the current setting.
3. Before rst use
MENU/NEXT VIEW/ENTER

10
3.2. Modes of operation
The OSTC has three modes of operation
and switches automatically between them:
Surface mode, dive mode and sleep mode.
Surface mode
In surface mode you can adjust the settings
for the next dive, adjust the base settings of
the OSTC and read recorded dive data.
To turn on the OSTC, press one of the two
buttons. If it does not wake up at once and
is in deep sleep mode (look for sleep mode),
push the button once more after 5 seconds.
In surface mode the display shows gener-
al information as time, date, temperature,
ambient pressure and battery status. After
a dive the display also shows the elapsed
time since last dive, tissue saturation and
the no y time.
Dive mode
The OSTC automatically switches into dive
mode when it is at 1,6 meter below the sur-
face for ve seconds (also when it is in sleep
mode).
Note
We recommend that you manually turn on
your dive computer before the dive to check
the settings.
In dive mode the display shows current div-
ing depth, dive time, maximum depth, the
currently selected gas (in CCR diving the
setpoint and the current diluent gas), de-
compression information and additional
information.
It is not possible to switch underwater from
dive mode to surface mode. You cannot
change the base settings while diving. Note
that exceptions apply to the apnea mode.
Sleep mode
When the OSTC isn’t operated at the sur-
face, it switches into sleep mode after two
minutes to save energy.
In sleep mode the display is turned off. Am-
bient pressure is measured at regular inter-
vals. After diving, decompression calcula-
tion continues.
After 15 minutes in sleep mode, OSTC
switches to deep sleep mode. In deep sleep
no buttons are polled, which saves a lot of
energy. Move the dive computer and wait 5
seconds until it wakes up. Now you can turn
it on with the buttons.
Also in deep sleep mode the OSTC switch-
es automatically to dive mode after 5 sec-
onds .
The deep sleep mode only exists in the
models OSTC 2 (since 2017) and OSTC plus.
The OSTC starts the dive mode automatically when
it is below 1,6 meters depth.