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User manual OSTC plus OSTC 2 OSTC sport OSTC cR OSTC Dive computer with the Firmware hwOS sport and hwOS tech...
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Please notice the additional user manuals for sensor readings with the OSTC cR and for gas integration in the OSTC 2 TR with Data like logbook information or updates can be transferred easily with Bluetooth. transmitter. This manual also applies to Take also notice of the large supply of log- older models such as the OSTC 3.
Content 1.1. Technical status ....................8 1.2. About this manual ..................8 1.3. Functions overview ..................8 1. Common advices ..................8 2.1. Requirements ....................9 2.2. Before every dive .....................9 2. Safety advices ..................9 2.3. While diving ....................10 2.4. Safe use of the OSTC ...................10 2.5.
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Gas change ....................24 Swap on empty ....................25 4.6. OC Gas setup ....................25 4.6.1. Edit gas ....................25 Select gas type ....................25 Setup mix .......................26 Setup change depth ...................26 Setup tank ......................27 Examples for gas setup ................27 4.7. CCR/pSCR setup ....................29 4.7.1. Mode ....................29 4.7.2.
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5.2.9. Diluent ....................40 5.3. Warnings ......................40 Rate of ascent ....................41 6. Maintenance ..................42 6.1. Housing ......................42 6.2. Bungee ......................42 6.3. Charging the battery...................42 6.4. Changing the battery .................43 Calculating the capacity of the battery ..........44 6.5. Spare parts .....................45 7.
Copying or reusing this manual or parts OSTC, its firmware and the documentation of this manual is not allowed without the are subject to technical changes without written permission of heinrichs weikamp. notice. 1.3. Functions overview The OSTC firmware (integrated software) is an ongoing development.
USB port check if all openings are closed. If necessary, you must be able to finish your The models OSTC 2 and OSTC 2 TR are com- dive safely without a dive computer. pletely closed and have no openings that could cause leakages.
2.3. While diving Keep your OSTC out of children´s reach. Small parts such as the battery cap (OSTC Take a backup system with you. plus, OSTC sport) may represent a choking While diving, always carry a backup system hazard. to measure duration and depth of your dive independently from OSTC.
3. Before first use heinrichs weikamp delivers the OSTC ready to use. But nevertheless check the battery status before using it the first time. The OSTC is attached to the arm with bun- gee. The bungee is already installed (Bun- gees, page 42).
3.2. Modes of operation Sleep mode When the OSTC isn’t operated at the sur- The OSTC has three modes of operation face, it switches into sleep mode after two and switches automatically between them: minutes to save energy. Surface mode, dive mode and sleep mode. In sleep mode the display is turned off.
3.3. Modes of diving In apnea mode the OSTC remains in dive mode even when diving at low depths. You In the main menu you can choose under can switch into surface mode at any time Dive/Deco Setup > Dive Setup > Dive Mode, by pushing the left button.
3.4. Compass calibration OSTC has a tilt-compensated electronic compass. Like all other electronic compass- es it must be calibrated before use. The cal- ibration compensates aberration that can be caused by the battery. Start the calibration with Settings > System Settings >...
4.2. Display in surface mode Permanent items On the start screen the OSTC shows the fol- lowing items permanently: • ambient pressure, clock, date • temperature • firmware • battery: level, type and voltage • dive mode: Open circuit (OC), Closed Cir- cuit (CCR), pSCR, Gauge or Apnea •...
4.3. Settings This process depends on the operation sys- tem of the computer. In Windows: Click the In the settings menu you can set up basic Bluetooth symbol in the system tray and se- configurations (like clock, language, display lect the option »add device«. You don’t need brightness, button sensitivity).
Layout Depth blinking The display in dive mode can be selected Setting whether a warning should be dis- in a smaller view with more detail or in a played when the maximum dive depth is larger view with less detail. This setting can exceeded (depth flashes red).
4.3.5. System settings calculation from new, without any data of former tissue load. Compass How to calibrate the compass, page 14. ! Warning Logbook offset Use reboot and reboot deco only, if you do The dives in the logbook have sequential not plan a repetitive dive within the next numbers.
4.4. Dive/Deco Setup you will have in five minutes if you stay on the current depth. In the menu Dive/Deco setup you can con- figure the dive mode of your OSTC and se- The future TTS is displayed as soon as a fu- lect important settings for the decompres- ture TTS with a decostop is available.
Dive timeout ZH-L16 After diving the OSTC shows a countdown The classical algorithm Bühlmann ZH-L16 of five minutes (pre-set). When you de- calculates with maximum values (M-val- scend again within this period, the whole ues) which should not be exceeded. As safe- time of diving will be saved in the logbook ty margin to the M-values (100 percent) as only one dive.
Gradient factors ! Warning In the deco model ZH-L16+GF the gradi- ent factors (GF) regulate the safety margin Only change values for decompression cal- to the maximum values of the Bühlmann culation if you are aware of their meanings. model that should not be exceeded during The pre-settings of the deco parameters are deco.
tors additionally, choose the value 100% for The maximum threshold Max Work warns both factors. of a too high oxygen level during the deep part of the dive. With Max Deco you can de- Waiting time fine a different value for the deco phase of Besides the no fly time, that indicates how a dive.
4.5.4. Stops and depths Salinity This setting allows you to adjust if you dive Safety stop in salt water or in fresh water. This value The safety stop can be switched on or off. has a slight effect on the display of the ac- After a dive within the no deco limit (NDL) tual and maximum depth.
Calculation gas (B/O) future bailout time is calculated assuming If this option is selected, the dive comput- that you spend the time set at fTTS/fB/O er calculates the gas needs that you need to with the start bailout gas at the current finish your dive including all decostops and depth and then start the bailout ascent.
Setting range: 0 – 3 minutes Note Default: 0 minutes (deactivated) The first gas is used when starting the dive. Swap on empty All gases (even disabled ones) can be cho- This function is particularly useful for side- sen underwater. mount diving: If you activate it with »Yes«, 2 identical active gases can be combined in The OSTC always computes the tissue load...
tomatically the first gas. Additionally the If the oxygen value is lower than 21% and first gas is marked with a *. Each of the five no helium is added, the warning Err (error) gases can be marked as first gas. appears.
Default: 200 bar the remaining gases. Select transmitter Dive with a travel gas, bottom gas and two Users of an OSTC 2 TR with transmitter can decompression gases (e.g. Nx32, Tx 15/60, Nx50 and 100% O2): select their transmitter here.
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content to 15% and the helium content to 60% (TX 15/60). Enter the maximum oper- ating depth under »Setup depth« (e.g. 75m or press »Reset to MOD« = 83m for ppO2 at 1.4). Set a third gas (e.g. gas 3) to deco, the O2 content to 50% and the change depth to 21m (or MOD).
4.7. CCR/pSCR setup Fixed setpoint (SP) You have to do the setpoint change by your- (only available in the firmware hwOS tech) self. In this menu you can make the settings Auto setpoint that are necessary for diving with a CCR and If you set a change depth for the setpoint, a pSCR.
Work ically not possible (e.g. 1,6 bar in 3 meters), Additional diluents which can be chosen the setpoint will be adjusted accordingly (in underwater. this example to 1,3 bar). Disabled The dive always starts with SP1, only in the The diluent is disabled and is not taken into deco calculator in the simulator the values account by the better diluent function.
4.7.7. pSCR setup 4.8.1. Calculate a decoplan Settings for diving with a pSCR. As a planning tool, the OSTC can calculate decompression stops in advance to planned O2 drop dives. Hereby all settings of the OSTC and Drop of O2 value in the pSCR compared to the tissue load of previous real dives are the diluent per breath.
4.8.2. Start simulator Calculator Setup (this item appears only, when CCR is select- ed as dive mode) Simulated dives can be maximum 90 min- utes long and are not stored in your log- With Setpoint you can select a different set- book.
4.9. Logbook tus, deco settings, average depth and gas list. The OSTC records data during every dive. It can be retrieved from the logbook. The Use the left button to exit the view. OSTC stores data of up to 255 dives with a total duration of 500 to 1000 hours.
5. Dive mode ascend without damaging the deco mod- el. It corresponds to the M-value in the Bühlmann model. If you dive beyond this 5.1. Displays in dive mode upper limit, the risk of a deco incident is increased. Permanent information •...
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Tissues (here setting »Pres+Sat«): Upper graphic: To- tal pressure (He+N2), lower graph: relative supersat- uration (He+N2), green: GF low, yellow: GF high, red: M-value. In the Custom View in the centre, you can access a lot of information by pressing the right button. Whether the maximum depth or average depth is permanently visible in the foreground can be set in the menu.
5.2. Menu in dive mode Note In dive mode (OC) you can select your pre- In the dive mode apnea there are no menu set gases (gaslist), reset the calculation of functions available. In gauge mode you can your average depth (reset avr./stopwatch), only reset the calculation of the average use the alternative GF-pair (aGF) for decom- depth.
Gases can be removed under »Lost Gas« or a forgot- ten gas can be set up under »Extra Gas«. Note Gases in red have a too high or low ppO2 to be used in the current depth (they can be selected anyway).
5.2.4. Set marker If you push Marker there will be a small marker (M) in your logbook from that point. 5.2.5. Bearing The options »Bearing« and »Layout« are not inside of the menu. They are on the same level as the menu call (left button). Press the button several times to get to Bearing and Layout.
5.2.6. Layout 5.2.7. CCR functions With »Layout« you can activate an en- (only available in the firmware hwOS tech) larged view of the dive mode. Here only the most important values are shown (dura- tion, depth, current gas and no-stop time or the TTS with the next stop), further infor- mation can be switched on via the Custom View (right button).
must change manually; the change depth Warnings are shown in the dive mode for is not indicated. the following items (some warnings also appear in the surface mode): • Low battery level 5.2.8. Bailout • ppO2 too high or too low •...
Rate of ascent The rate of ascent is displayed when it is more than six meters per minute (e.g. +7/ min). When the rate of ascent is faster than 10 m/min it is displayed in red as warning. The rate of descent is displayed when it is more than 6 m/min (e.g.
6.3. Charging the battery In the OSTC 2, TR and cR, a lithium-ion bat- tery is permanently installed. The OSTC plus comes with a removable battery. These models are charged wirelessly via inductive charging (Qi standard).
The use of a 1.2V NiMH battery is not rec- ommended. The rechargeable battery of the OSTC 2, OSTC 2 TR and OSTC cR is sealed and can After replacing the battery the menu New only be removed by heinrichs weikamp. The battery appears on the display.
When you insert and select a recharge- es, there are also 3 very rough voltage val- able battery (3.7V AA LiIon battery), the ues for 3.6 V batteries, which are compared OSTC initially displays 0% battery capaci- against the calculated percentage figure: ty even when the battery is full.
To make the best of your Data transfer with the OSTC is supported OSTC, use the latest stable firmware that by many software applications for all com- is available at the heinrichs weikamp web- mon platforms. The applications provide site: www.heinrichsweikamp.com easy-to-operate functions for transferring...
Dimensions 66 mm x 65 mm x 20 mm (OSTCplus) 76 mm x 78 mm x 30 mm (OSTC 2 and OSTC 2 TR) 80 mm x 68 mm x 34 mm (OSTC cR) 69 mm x 66 mm x 21 mm (OSTC sport) Weight 150 gr.
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