Dive Rite NiTek Trio User Manual
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Dive Rite NiTek Trio User Manual

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Summary of Contents for Dive Rite NiTek Trio

  • Page 1 www.diverite.com Date of Purchase _________________...
  • Page 3 Dive Rite’s website (www.diverite.com). He or she must then return the damaged items to Dive Rite, along with a copy of the original purchase invoice or receipt. No warranty service will be performed for other than registered owners.
  • Page 4 Dive Computer mode•28 Gauge mode•37 Log mode•38 Profile mode•40 History mode•42 PC Transfer mode•43 Surface mode (Upon Surfacing From a Dive)•44 Altitude operation•46 Chapter 3 Care and Maintenance•48 Proper handling techniques•49 Low battery warning•50 Index•51 NiTek Trio Dive Computer User Manual v1.2...

  • Page 5: Table Of Contents

    Chapter 1 Introduction Summary This chapter provides an overview of the NiTek Trio, lists the NiTek Trio’s features and functions, and covers warning information that should be read before using your NiTek Trio. Content Overview • 2 Features and functions • 3 Specifications •...

  • Page 6: Overview

    The NiTek Trio dive computer is a multifunctional computer for recreational diving, providing information on depth, dive times, no-decompression and decompression times, and nitrogen and oxygen absorption and elimination during all dive phases, including ascent, surface interval times, and subsequent dives.

  • Page 7: Features And Functions

    (EAN21) to EAN99. Underwater, NiTek Trio users can switch between mixes at the push of a button. • The NiTek Trio is capable of functioning up to a depth of 328 feet (100 meters) when in dive computer or gage mode •...
  • Page 8 Special mode indicators make it easy to determine what display mode or screen you are in at any time • The NiTek Trio has a back light to illuminate the screen, which can be turned on with the touch of a button •...

  • Page 9: Specifications

    O2 setting range: Mix1 – Mix3: 21 to 99 percent O2 setting: 1% increments Dive log Dive logging: Maximum of 60 dives Profile logging: Maximum of 30 hours Profile sampling rates: 10 or 30 seconds NiTek Trio Dive Computer User Manual v1.2...

  • Page 10: Warnings

    • The NiTek Trio is designed for use by one diver at a time. Divers should not share a single NiTek Trio—or any other dive computer—on the same dive. Additionally, no diver should lend...

  • Page 11: When Diving

    DCI. Use your NiTek Trio conservatively and in conjunction with other dive planning devices, such as dive tables. Do not rely on the NiTek Trio, or any similar device, as your sole means of avoiding decompression illness.
  • Page 13 Chapter 2 Using the NiTek Trio Summary This chapter provides topics about using, setting, and understanding each of the modes and options of the NiTek Trio. Content Getting started • 10 Accessing display modes and screens • 11 Button operation • 11 Time Display mode •...

  • Page 14: Getting Started

    Using the NiTek Trio Getting Started The NiTek Trio has many modes and screens and a number of options that can be changed depending on your dive location and profile. The following is a checklist of general things that you should pay attention to before, during, and after a dive.

  • Page 15: Accessing Display Modes And Screens

    Using the NiTek Trio Accessing display modes and screens There are some display modes that the NiTek Trio enters and/or exits automatically. For example, by taking the NiTek Trio underwater, the dive mode automatically turns on. Upon surfacing, the NiTek Trio automatically enters the time mode.

  • Page 16: Time Display Mode

    Using the NiTek Trio Time Display mode Time display mode is the NiTek Trio’s default mode. The computer returns to this mode automatically upon surfacing from a dive and from other modes when a period of time has passed without any buttons being pressed.

  • Page 17: Entering Time Display Mode From Another Mode

    The back light illuminates for four to five seconds. 2. Press either button again to reactivate the back light. Toggling the Character-Display screen The NiTek Trio has a 2-line display screen that can show either current temperature, time-to-fly information or a user-selectable readout. To toggle the user-selectable character-display: 1.

  • Page 18: Compass Set And Display Mode

    Using the NiTek Trio Compass Set and Display mode Compass Set and Display mode is where the NiTek Trio compass settings are displayed and set up. There are two screens needed to view and set up the compass. Compass display...

  • Page 19: Saving A Compass Heading

    Note: The reciprocal of your heading will also be indicated with a symbol in the display. 3. To erase/remove the saved heading, press and hold Select again for 4-5 seconds until the heading display and time is shown once more. NiTek Trio Dive Computer User Manual v1.2...

  • Page 20: Dive Option Set And Display Mode

    There several screens needed to view and set up all dive options. Note: If you are using the NiTek Trio in “Gage” mode, refer to the section entitled ‘Using Gauge Mode’ for further information and setting procedures.
  • Page 21 5. Press and release Set to increase the PO2. The PO2 will increase from 1.0 to 1.6 and then repeat. 6. Press Select again to select the mix1 percentage field. 7. Press and release Set to increase the percentage. NiTek Trio Dive Computer User Manual v1.2...

  • Page 22: Setting The Maximum Depth Alarm

    NOTE: Unless prior dives that day have been conducted on air (FO2 of 21 percent), the NiTek Trio will reset the gas mixture on following dives to an FO2 of 99 percent if the surface interval is 10 minutes or longer.

  • Page 23: Setting The Dive Time Alarm

    Setting the dive time alarm The NiTek Trio has a dive time alarm that is activated when the diver reaches the dive time that is set for the dive. When the dive time is reached, an audible alarm sounds and the screen flashes for three seconds.

  • Page 24: Setting For Fresh Or Salt Water Use

    To exit, press and hold Mode for 1 to 2 seconds to return to time mode. Setting for fresh or salt water use The NiTek Trio is capable of operating using fresh or salt water calculations. This is based on: •...

  • Page 25: Setting The Computer For Metric Or Imperial Operation

    Setting the computer for metric or Imperial operation The NiTek Trio can calculate and give you values in Imperial units or metric units. When in metric, depth values are expressed in meters and temperatures are expressed in Celsius (°C). When in Imperial, depth values are expressed in feet and temperatures are expressed in Fahrenheit (°F).

  • Page 26: Understanding Fo2 Default

    CNS oxygen toxicity can occur if Nitrox is breathed at depths where the partial pressure of oxygen (PO2) exceeds safe limits. The NiTek Trio is designed to help divers avoid such situations by presenting information and warnings regarding current PO2 levels and cumulative exposure to elevated PO2s.

  • Page 27: Using Gauge Mode

    Nitrox tables. Using gauge mode If you do not want to use the NiTek Trio as a normal ‘dive computer,’ the NiTek Trio has a gauge operation. Gauge operation is when the NiTek Trio is operating simply as a depth gauge and bottom timer.
  • Page 28 Using the NiTek Trio Note: If you are using the NiTek Trio in “Dive Computer” mode, refer to the section entitled “Using Computer Mode” for further information and setting procedures. NiTek Trio Dive Computer User Manual v1.2...
  • Page 29 2. Press Select and either “DIVE” or “GAGE” is flashing. 3. Press Set to select “gage” mode. “GAGE” is displayed in place of “DIVE.” 4. Press Select to continue with setup of other settings. NiTek Trio Dive Computer User Manual v1.2...

  • Page 30: Plan Mode

    If the computer is in FO2 default, a series of horizontal lines appears. If the NiTek Trio calculates that there is residual nitrogen present from previous dives, the available no-decompression limits are shorter. Depending on how much residual nitrogen is present, no NDL time may be displayed for some deeper depths.
  • Page 31 Do not plan dives to depths deeper than those for WARNING: which the NiTek Trio is capable of displaying an available no- decompression limit. Doing so could cause you to exceed the no- decompression limits or a limiting PO2 of 1.4 atmospheres (1.6 atmospheres for deco).

  • Page 32: Dive Computer Mode

    (PO2s). There are a maximum of eight bars. When all bars are displayed, it means that you have used 100 percent of your NiTek Trio Dive Computer User Manual v1.2...

  • Page 33: Secondary Underwater Screens

    (4) Safety Factor: The safety factor margin that you selected. To display the secondary diving mode screens: 1. Press Select button. The back light turns on, and the first secondary screen is displayed. 2. Press Mode button. NiTek Trio Dive Computer User Manual v1.2...

  • Page 34: Changing Gas Mixes Underwater

    The dive information will be stored for later review. Changing gas mixes underwater Because the NiTek Trio has the ability to use up to three different gas mixes (programmed in dive option set mode) during a dive, you need the ability to switch between the mixes while underwater.

  • Page 35: Using The Compass

    When you again ascend above 20 feet (6 meters), the three-minute countdown restarts. Using the Compass The NiTek Trio has several screens that can display current heading, depth, dive-time, and several alarm functions. To display the compass screens: 1. Press and hold the SET button for 1-2 seconds.

  • Page 36: Warnings While In Diving Mode

    Default warning indicated by Nitrox and “WATER SET FO2!” blinking, and dashed line for mix Ascent rate warning The NiTek Trio assumes that you keep your ascent rate within the following limits: Depth range Ascent rate 0 to 19 feet (0 to 5.9 meters)
  • Page 37 View 2 - Exceeded PO2 with OLI graph blinking. Oxygen limit index (OLI) warning The NiTek Trio’s oxygen limit index (OLI) reflects the cumulative effect of your exposure to elevated partial pressures of oxygen. The PO2 warning only accounts for the intensity of the exposure, but the OLI accounts for both the intensity and length.
  • Page 38 FO2 percentages prior to the dive and the computer has FO2 defaulted. See “Understanding FO2 default” for more information. View 1 - OLI warning, “OLI CAUT” and “OLI ALARM” blinking. View 2 - OLI graph also blinking. NiTek Trio Dive Computer User Manual v1.2...
  • Page 39 There are a maximum of nine bars. When all bars are displayed, it means that you are at or have exceeded the no-decompression limits and have entered decompression. (6) Required stop depth: This is the required decompression stop depth. NiTek Trio Dive Computer User Manual v1.2...
  • Page 40 At this point, the computer is not usable for the next 48 hours. Decompression stop violation with “DECO AL STOP!” and current depth, stop depth, and stop time blinking NiTek Trio Dive Computer User Manual v1.2...

  • Page 41: Gauge Mode

    It begins displaying depth and time once you descend below 4 feet (1.2 meters). Gauge operation is when the NiTek Trio is operating simply as a depth gauge and bottom timer. “Gage” and the dive-profile are displayed on the screen, exposure to nitrogen and oxygen and no-decompression limits are not tracked, and no bar graphs are displayed.

  • Page 42: Log Mode

    For each dive, the NiTek Trio stores information, such as depth, time, temperature, etc. in a log. This stored log information can be viewed directly from the NiTek Trio’s screen when in log mode, and is not user- resettable Because of the amount of information the NiTek Trio stores, there are three pages that you can toggle between for each dive.
  • Page 43 Note: When in “Gage” mode, the FO2 (8), and O2 OLI (7) and Nitrogen (10) exposure bar graphs will not be displayed. This indicates the NiTek Trio is not recording that data. To view a dive log: 1. Repeatedly press Mode until the logbook function graph is displayed at the top of the screen.

  • Page 44: Profile Mode

    (5) Depth graph: This is a graphical view of the entire dive, with the moving point of the dive at that time. To view a dive profile: 1. Repeatedly press Mode until the logbook function graph is displayed at the top of the screen. NiTek Trio Dive Computer User Manual v1.2...
  • Page 45 3. Once a dive profile is selected, the computer automatically progresses through the different depths and times of the dive. 4. If you want to exit profile mode, press and hold Mode for 1 to 2 seconds to return to time mode. NiTek Trio Dive Computer User Manual v1.2...

  • Page 46: History Mode

    The total dive time, total number of dives and maximum depth reached are displayed when in History mode, and are not user-resettable. The NiTek Trio will separately track dives in both “Dive” and “Gage” functions, so you can have a complete record of your diving experiences.

  • Page 47: Pc Transfer Mode

    NiTek Trio Docking Station and its associated NiTek DiveLog software. Please note that the NiTek Trio Dive Log software does not currently work on Vista 64 bit operating systems. Seiko is working with Microsoft to get certification as well as modify the drivers and installer.

  • Page 48: Surface Mode (Upon Surfacing From A Dive)

    Using the NiTek Trio Surface mode (Upon Surfacing From a Dive) Once you surface from a dive, the NiTek Trio automatically switches to time mode, with other information displayed on the screen that pertains to the dive you just completed. This includes: •...
  • Page 49 WARNING: It is recommended that you wait at least 24-hours following any dive before flying in an aircraft or driving to altitude. Failure to allow sufficient surface interval time before doing so may increase your risk of decompression illness (DCI). NiTek Trio Dive Computer User Manual v1.2...

  • Page 50: Altitude Operation

    Using the NiTek Trio Altitude operation The NiTek Trio adjusts automatically for diving at altitudes of up to 19,685 feet (6,000 meters). To show that the NiTek Trio has made the altitude adjustment, it displays the altitude settings using symbols representing mountains.

  • Page 51: Nitek Trio Dive Computer User Manual V1.2

    NiTek Trio is merely reflecting this fact. If the level of residual nitrogen calculated by the NiTek Trio is unusually high (seven or eight bars) when going to altitude, the computer will be unable to enter dive mode. Avoid taking the computer to altitude when residual nitrogen levels are this high, and do not enter the water until nitrogen levels have dropped substantially.

  • Page 52: Care And Maintenance

    Care and Maintenance Summary This chapter provides care and maintenance and battery information for the NiTek Trio. Content Proper handling techniques • 48 Low battery warning • 49 Replacing the battery • 49 NiTek Trio Dive Computer User Manual v1.2...

  • Page 53: Proper Handling Techniques

    Do not take it underwater immediately after doing so. • Do not transport your NiTek Trio on an aircraft or take it to altitude while it is sealed in an air-tight container. Doing so may interfere with its ability to correctly read, display, and track depth information.

  • Page 54: Low Battery Warning

    Care and Maintenance Low battery warning The battery that comes with the NiTek Trio is designed to last for up to three years under normal use. You may get more or less use from the battery depending on how often it is used and how it is cared for.
  • Page 55 Buhlmann · 5 default mode button operation · 11 time mode · 12 default warning · 31 depth · 3 depth sensor · 5 Care and Maintenance · 47 desaturation time · 44 descent time NiTek Trio Dive Computer User Manual v1.2...
  • Page 56 · 16 gauge mode · 23, 36 changing underwater · 29 changing screens mix1, mix2, mix3 · 5, 17, 27 underwater · 36 mode button · 11 selecting · 23 NiTek Trio Dive Computer User Manual v1.2...
  • Page 57 · 34 description · 20 stop symbol · 34 gauge mode · 24 stop time · 34 setting · 20 surface interval time · 43 surface mode · 43 Surface mode NiTek Trio Dive Computer User Manual v1.2...
  • Page 58 · 12 fresh or salt · 4 entering from another salt or fresh water use · mode · 13 setting time and date · 12 toggling character display · 13 NiTek Trio Dive Computer User Manual v1.2...

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