heinrichs weikamp OSTC 2 User Manual
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heinrichs weikamp OSTC 2 User Manual

Open source dive computer
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  • Page 1 User manual Open Source Dive Computer...
  • Page 3 Contact For any questions relating to your OSTC 2, please contact us via… • internet forum: forum.heinrichsweikamp.com • E-Mail: info@heinrichsweikamp.com • mail: heinrichs weikamp Adlerstraße 7 79098 Freiburg im Breisgau Germany...
  • Page 4 Your OSTC 2 Thank you for choosing a heinrichs Also in the new version the of the OSTC 2 weikamp dive computer. the battery is powerful: It offers up to 60 hours in dive mode. While diving the big The new OSTC 2 follows the well-prov- LCD display is illuminated permanently.
  • Page 5 The development of the dive computers of heinrichs weikamp is permanently going on. Use the firmware updates to keep your OSTC 2 always up to date. Get it for free at www.heinrichsweikamp.com You can use the OSTC 2 intuitively. But to...

  • Page 6: Table Of Contents

    Requirements ........11 Surface Mode ..........28 Before every dive .........12 Display in surface mode ....28 While diving ..........14 Menu functions ........30 Safe use of the OSTC 2 .......16 Logbook ..........32 Environmental conditions ....17 OC Gas setup ........35 CCR Setup ..........41 Simulator ..........43 Deco mode ..........48...
  • Page 7 Dive mode ...........61 Readout the dive computer ....74 Displays in dive mode ......61 Bluetooth connection ......75 Menu functions ........66 Software for the OSTC 2 ....76 Gaslist ..........67 Updating the firmware .....77 Setpoint change........69 Technical data ..........78 Bailout ..........69 Reset Avr (Stopwatch).....70 Disposal ............79...

  • Page 8: Common Advices

    Common advices Technical status This manual corresponds to the techni- Standard settings cal status of OSTC 2 and its firmware as of April 2015. Unless noted differently, the information in this manual refers to OSTC standard OSTC 2, its firmware and the documen- settings.

  • Page 9: About This Manual

    About this manual Note Special markings indicates additional information for ! Warning advanced OSTC 2 user indicates a situation that carries a sig- nificant risk or injury Terms of use Caution Copyright © heinrichs weikamp indicates a situation that carries a risk of...

  • Page 10: Functions Overview

    Functions overview Your dive computer OSTC 2 assists you Planning with the following functions: Configure and check gas mixtures as well as setpoints and sensor data in Display CCR mode, calculate a decoplan in the Diving depth and duration according...

  • Page 11: Safety Advices

    It may harm your health if you rely on a wrong config- ured dive computer. Do not use this dive computer, if you don’t know or understand the settings and displayed information of OSTC 2.

  • Page 12: Before Every Dive

    Plan your dive. Configured correctly? Set up a dive plan independently from Check the settings of your OSTC 2. If nec- OSTC 2 and take it with you when diving. essary, adjust the settings according to your dive plan and equipment.
  • Page 13 Device waterproof? Display messages? The OSTC 2 is completely closed and Check the screen of OSTC 2. Do not dive has no openings that could cause leak- if your dive computer displays a warning. ages. But for safety check the housing Check the cause of the warning.

  • Page 14: While Diving

    While diving Take a backup system with you Take the OSTC 2 with you on every repeat While diving, always carry a backup dive – don’t lend it to anyone. system to measure duration and depth A correct calculation of tissue saturation of your dive independently from OSTC 2.
  • Page 15 Caution Saturation data is lost when updating the OSTC 2 firmware or in the unlikely event of a failure. In these cases, do not dive any further until tissue saturation has returned to normal level.

  • Page 16: Safe Use Of The Ostc 2

    Safe use of the OSTC 2 Do not modify the hardware. Modifi- Caution cations to the hardware of OSTC 2 can damage its proper function and the wa- tertightness of its housing. Surpassing the maximum water depth of 120 meters may cause malfunction or Only the bungee backplate can be permanent damage of the device.

  • Page 17: Environmental Conditions

    Environmental conditions Store the OSTC 2 in a cool, dry place. Note Permissible temperature range for use and storage: between -5 °C and 40 °C. Decompression calculations and depth are always based on the actual surface pressure. So if you are diving in moun- tain lakes, no further settings are needed.

  • Page 18: Before First Use

    OSTC 2 com- pletely before you use it the first time. Before diving, you need to adjust some settings as described in this manual. Fa- miliarize yourself with the OSTC 2. It is recommended that you read this manual carefully.

  • Page 19: Handling

    Handling Operate the OSTC 2 with the two piezo buttons SET/MENU and ENTER on the left and right side of the housing. The force required to push the buttons is indepen- dent to ambient pressure. Push the left button to scroll through the menu, use the right button to confirm.
  • Page 20 back to the top with the next push. To confirm push ENTER. In some menus you will find 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.

  • Page 21: Modes Of Operation

    Modes of operation OSTC 2 has three modes of operation To wake up the OSTC 2, push one of the and switches automatically between buttons SET/MENU or ENTER. them: Surface mode, dive mode and sleep mode. In surface mode the display shows...
  • Page 22 Dive mode In dive mode the display shows current diving depth, dive time, maximum The OSTC 2 automatically switches into depth, the currently selected gas (in CCR dive mode when it is at 1,6 meter below diving the setpoints), decompression in- the surface for five seconds.
  • Page 23 Sleep mode When the OSTC 2 isn’t operated at the surface, it switches into sleep mode after two minutes to save energy. In sleep mode the display is turned off. Ambient pressure is measured at regular intervals. After diving, decompression...

  • Page 24: Modes Of Diving

    Apnoe: Use this dive setting for apnea circuit). This setting is preset on your diving or snorkeling. OSTC 2. In apnea mode the OSTC 2 serves as a CC (closed circuit): Use this dive setting depth gauge. Additionally displayed are with a closed circuit rebreather.
  • Page 25 Gauge: With this dive setting, OSTC 2 and saturation calculation are switched serves as a depth gauge. Decompression off. In apnea mode the OSTC 2 remains and saturation calculation are switched in dive mode even when diving at low off.

  • Page 26: Compass Callibration

    Compass calibration OSTC 2 has a tilt-compensated electronic compass. Like all other electronic com- passes it must be calibrated before use. The calibration compensates aberration that can be caused by the battery. It is recommended to compensate the com- pass if your dive computer shows big de- viations in the heading reading.
  • Page 27 Do this a number of times from any metallic object during the cali- within 60 seconds. After this while the bration process (at least 50 centimeters). calibration ends automatically. During the calibration routine the OSTC 2 shows X-, Y- and Z-axis.

  • Page 28: Surface Mode

    Surface Mode Display in surface mode Permanent items In the surface mode the OSTC 2 shows following items permanently: • ambient pressure, clock, date • temperature • battery level • dive mode: Open circuit (OC), Closed Circuit (CC), Gauge or Apnea •...
  • Page 29 Selectable items In the middle part of the display you • desaturation diagram (After the dive, can see extra information in the custom you can see the approximate tissue view. You can switch them with the right saturation in the desaturation diagram. button.

  • Page 30: Menu Functions

    Logbook: Recorded data from recent tings to prepare the next dive, adjust the dives base settings of OSTC 2 and review your dives in the logbook. OC Gas setup: Set up your gas mix for scubadiving or your bailout gases for CCR To open the menu in surface mode push diving.
  • Page 31 Deco mode: Settings for deco calcula- tion and dive modes (open circuit, closed circuit, gauge or apnea) of the OSTC 2 Settings: Settings for time, language, display brightness, compass Exit: Exit the main menu...

  • Page 32: Logbook

    Logbook The OSTC 2 records data during every dive. It can be retrieved from the logbook. The OSTC 2 stores data of up to 255 dives with a total duration of 500 to 1000 hours. The exact number of records depends on the overall size of data.
  • Page 33 ENTER. The dive profile and details page If you want to secure your recorded dive show up. The details page also shows data, you can connect the OSTC 2 via position index, date, maximum diving Bluetooth to a personal computer and depth, duration, minimum and maxi- readout the data (page 74).
  • Page 34 Note Via Settings > Display Settings > Logbook Offset you can put in your own number of dives. It will be shown instead of the numbers of dives which are stored in the dive computer (page 57).

  • Page 35: Oc Gas Setup

    OC Gas setup Use OC gas setup to configure presets for up to five gases for scubadiving as well as bailout gases for rebreather diving . You can switch between these presets when you change your gases while diving. The presets are marked like this: Air for compressed air (21% oxygen) and Nx for Nitrox (e.g.
  • Page 36 Choose a gas in the menu OC gas setup Type and push ENTER to see details or to change values. Each mix can be set to the following type: First: The first gas which is used when the dive starts. Only one gas can be marked as first.
  • Page 37 Disabled: Gas is disabled and is not be chosen underwater. taken into account for the decompres- sion prognosis The OSTC 2 always computes the tissue load and the decompression scheme Disabled gases are shown in blue letters. using the selected gas. It takes all deco gases in account for the decompression phase.
  • Page 38 (MOD). push ENTER until the required value is Use Reset to MOD to reset the value to displayed. For reference, the OSTC 2 dis- the MOD. The change depth can only be plays the calculated maximum operat-...
  • Page 39 Examples Dive with two decompression gases and one travel/bottom gas: Additionally to Dive with only one gas: Configure one the first gas and the two decompression gas, for example gas 1 as first. Set up gases, configure a fourth gas as travel. the mix using the submenu “setup mix”.
  • Page 40 Note In surface mode the actual gas list is shown via the custom view (right button), also in dive mode. You can easily see which gas fits to the current depth (dynamic gaslist). Gases with a too high or too low ppO2 are marked red. To change the gas while diving open the menu (left button SET/MENU) and go to gaslist.

  • Page 41: Ccr Setup

    CCR Setup In CCR Setup you can configure all set- Type (Setup diluent type) tings you need for diving with a closed circuit rebreather. For deco calculation Every diluent can be one of the following you can use fixed setpoints. type: First: The starting diluent which is used in the loop when starting the dive.
  • Page 42 In dive mode you can make a quick can also configure the change depth for gas change (better diluent). Close to the each setpoint. But in dive mode OSTC 2 configured change depth the OSTC 2 will not indicate the change depth. De- shows the better gas.

  • Page 43: Simulator

    Simulator Use the simulator to simulate the dive mode of the OSTC 2 or to calculate the decoplan for your next dive. Using the simulator you can get familiar with your dive computer even before the first dive.
  • Page 44 Calculate decoplan As a planning tool, the OSTC 2 can calcu- To start calculation, select calculate deco late decompression stops in advance to and push ENTER. planned dive. Hereby all settings of the OSTC 2 and the tissue load of previous Wait while the calculation is going on.
  • Page 45 When the calculation is finished, the Interval: Increase interval in 10 minutes display shows the decoplan with the steps up to 240 minutes planned decostops. Depth is displayed in meters, duration in minutes. Bottom time: Can be increased in steps of 2 minutes up to a maximum of 59 The duration is additionally represented minutes...
  • Page 46 SET/MENU and confirm with ENTER. logbook. Simulated dives don’t affect any settings of the OSTC 2. Of course Sim: -1m: descend 1 meter there will be no influence on the tissue Sim: + 1m: ascend 1 meter loads from real dives.
  • Page 47 Note The OSTC 2 stays 90 minutes in the sim- ulation mode until it switches to sleep mode. Stop the dive mode manually to save energy.

  • Page 48: Deco Mode

    Deco mode In deco mode you can configure the dive mode of your OSTC 2 (OC, CC, gauge or apnea) and select important settings for the decompression calculation. Dive mode: There are several dive modes for open circuit (OC), closed circuit re- breather diving (CCR), gauge mode or apnea diving.
  • Page 49 GF high does it with the factors. The OSTC 2 is preset to a value highest decostop. OSTC 2 is preset to a for saturation of 110 percent and a value GF low of 30 percent and a GF high of 85 for desaturation of 90 percent.
  • Page 50 “Future TTS @5” shows your max between 1,20 and 1,60 bar. TTS in five minutes. Safety stop: The safety stop can be switched on or off. After a dive within the no deco limit (NDL) the OSTC 2 shows...
  • Page 51 Last deco: Setting for depth of last de- compression stop. Choose here if the GF high: Upper value of the GF-pair in OSTC 2 shall calculate its last stop at 3, percent (70 to 110%, default: 85%) 4, 5 or 6 meter (default: 3m). If you have heavy waves, a deeper last decostop can be better.
  • Page 52 Alternative GF: Settings for an alterna- tive GF-pair which can be switched while diving (toggle GF). aGF selectable: Yes: the GF-pair can be toggled underwater. No: the GF-pair cannot be toggled. aGF low: alternative value for the GF low in percent (60 to 100%, default 60%) aGF high: alternative value for the GF high in percent (80 to 120%, default 85%)
  • Page 53 ! Warning Only change values for decompression calculation if you are aware of their meanings. The presettings of the deco parameters are well established and proven. Changes have direct influence on the decompression calculation and modify the conservatism of the Bühl- mann model.

  • Page 54: Settings

    Settings In this menu you can set up basic con- figurations, calibrate your compass and reset settings. Information Shows some device specific information like serial number, number of total dives and the actual used firmware.
  • Page 55 OSTC 2. You can change the values You can also set up time and date with for time and date with the ENTER button.
  • Page 56 Rotate screen: The display can be also set different brightness levels. In most shown upside down. cases the default Eco is recommended. If the OSTC 2 is used often in low depths and bright sunlight, a higher setting is recommended.
  • Page 57 Language Logbook-Offset: With the logbook-offset you can adjust the dive number shown The OSTC 2 can be se tup in four lan- in the logbook to match your actual guages: English, German, French and number of dives. In the detail view of the Italian.
  • Page 58 Note Salinity: This setting allows you to adjust salinity of water, used for calculating the actual and maximum depth. The default Decompression information is based salinity is 0%. To increase this value, on absolute pressure and not on rela- select the salinity menu and push ENTER tive pressure.
  • Page 59 Reset menu In the reset menu you can put the set- Reset deco: To delete the current de- tings of the OSTC 2 to its default values compression data choose reset decodata and start the dive computer from new. and push ENTER. You`ll be prompted to You can cancel your decompression in- confirm the action.
  • Page 60 Dives in Reset all really resets all settings in the the logbook and the dive counter will not OSTC 2 to their factory defaults, it also be reset. occurs to the compass calibration and the personal text. Once confirmed this Reset logbook: Deletes all data in the can’t be undone! Saturation and no fly...

  • Page 61: Dive Mode

    Permanently shown information • water temperature in °C or °F • Future TTS (@+xx): shows your deco in In dive mode the OSTC 2 shows the xx minutes at the same depth. Future following items permanently on the TTS is only displayed, when the OSTC 2...
  • Page 62 Selectable information • time, EAD/END and graphical indica- tion of tissue saturation Selectabel items can be shown in the • current gradient factors or saturation center of the display. You can toggle factors and the alternative GF-pair through these with the right button. •...
  • Page 64 Warnings • too high gradient factors and missed decocstop (the missed decostop is Warnings appear permanently on the marked red) display. Up to two warnings are shown • too fast ascent simultaneously. If there are more than • when the decompression calculation is two warnings, the warning display based on the alternative GF-pair toggles every two seconds.

  • Page 66: Menu Functions

    Menu functions In dive mode (OC) you can select your five seconds or the OSTC 2 returns to preset gases (gaslist) und reset the cal- normal display. culation of your average depth (reset avr./stopwatch). During CCR diving you Note can choose setpoints and bailout gases.

  • Page 67: Gaslist

    Gaslist In the menu gaslist you can make your Note gas changes and select the current gas. You can choose the gas mixes that you have prepared in gas setup in the surface Gases in red have too high or low ppO2 mode.
  • Page 68 computer proposes you the better gas (e.g. Nx50?). So you see at once which gas you shall use. Just confirm with ENTER.

  • Page 69: Setpoint Change

    Setpoint change Bailout While diving in CCR mode you can If you have to switch from closed circuit choose between the five setpoints that to open circuit diving, you can select your have been configured in surface mode. bailout gases in the menu (SET/MENU). Choose setpoint in the menu (SET/ You can choose between the five gases MENU) and conform the selected value...

  • Page 70: Reset Avr (Stopwatch)

    Reset Avr (stopwatch) Bearing In dive mode you can select the average To make a bearing with the compass at depth and stopwatch with the right first go to the compass view with the button. Total avr indicates the average right button.

  • Page 71: Maintenance

    Maintenance Housing Wash your OSTC 2 after every dive with fresh water, especially after diving in seawater. If the housing is very dirty, put your OSTC 2 over night in fresh water. Don’t use any cleaning agents or solvents.

  • Page 72: Bungee

    Bungee Charging the battery The OSTC 2 is delivered with bungees. The OSTC 2 has a high-capacity recharge- The bungee wristband can be set to your able battery. In eco mode it offers up to arm diameter individually. To tighten the 60 hours of divetime.

  • Page 73: Accessories

    This is normal and harmless. If sheets or Bluetooth adapter are available the temperature gets too high the charg- in the online shop of heinrichs weikamp ing stops automatically. (shop.heinrichsweikamp.com) or at your dealer. Note...

  • Page 74: Readout The Dive Computer

    Readout the dive computer You can connect your OSTC 2 easily via Bluetooth to your personal computer or notebook. So you can upload software and download your logbook. All you need is a Bluetooth capable computer. The OSTC 2 works with Bluetooth “Smart Ready”, depending on the receiver it acti-...

  • Page 75: Bluetooth Connection

    COM-port. Via this Bluetooth menu stops automatically. the PC software communicates with You can also stop it with the right button the OSTC 2. You don’t need any special ENTER. drivers. When connecting your OSTC 2 to a computer the first time, you need to do some settings.

  • Page 76: Software For The Ostc 2

    Software for the OSTC 2 Note Data transfer with the OSTC 2 is sup- ported by many software applications for all common platforms. The applica- OSTC 2 is a open source dive computer tions provide easy-to-operate functions and works with the firmware hwOS. For...

  • Page 77: Updating The Firmware

    Note The firmware hwOS is in a constant process of improvement. To make the best of your OSTC 2, use the latest stable We recommend you to upgrade the firmware that is available at the hein- firmware regularly - at least ones a richs weikamp website year.

  • Page 78: Technical Data

    Technical data Display High resolution TFT monitor with 2,4“ (6,1 cm), field of view: 170°, Resolution: 320 x 240 pixel, 65 000 colours, status display: 2 LEDs Connections Bluetooth Smart Ready (2.0 and 4.0) Sensor Combined depth/temperature sensor 3D compass (fully tilt-compensated) Power supply Lithium battery Up to 60 hours of operation, 2 years standby...

  • Page 79: Disposal

    Disposal According to the European WEEE direc- tive, electrical and electronic devices must not be disposed with consumer waste. It’s components must be recycled or disposed apart from each other. Oth- erwise contaminative and hazardous substances can pollute our environment. You as the consumer are committed by law to dispose electrical and electronic devices to the producer, the dealer or...

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