Dive Rite NiTEK X User Manual
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Dive Rite NiTEK X User Manual

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Summary of Contents for Dive Rite NiTEK X

  • Page 1 Date of Purchase _________________...
  • Page 2 All further claims, especially for damage after diving accidents, are excluded from coverage under this warranty. Dive Rite has no obligation to honor any extension of this warranty. This warranty is in lieu of all other warranties, express or implied.
  • Page 3 Log Mode•37 Profile Mode•38 OXY Mode•39 PC Transfer Mode•41 Surface Mode (upon surfacing from a dive)•42 Altitude Operation•44 Chapter 3 Care and maintenance•45 Proper Handling Techniques•46 Low Battery Warning•47 Replacing the Battery 47 Index•49 NiTek X Dive Computer User Manual v1.1...
  • Page 4 NiTek X Dive Computer User Manual v1.1...

  • Page 5: Table Of Contents

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

  • Page 6: Overview

    With an easy-to-read display, the diver has no problem following and reading the displayed information. The NiTek X comes standard with a number of modes, including a sleep mode, time mode, dive set mode, dive plan mode, log mode, profile mode, PC transfer mode, dive mode, external oxygen-cell capabilities, OC mode, and CC mode.

  • Page 7: Features And Functions

    Underwater, NiTek X users can switch between mixes at the push of a button • The NiTek X is capable of functioning up to a depth of 492 feet (149 meters) • The NiTek X automatically adjusts for altitudes up to 19,685 feet (6,000 meters) •...
  • Page 8 • External oxygen-sensor monitoring and analysis capabilites can be added • The NiTek X can be programmed to display data in Imperial or metric units • Dive depth can be displayed in fresh or salt water equivalents •...

  • Page 9: Specifications

    O2 setting: 1% increments He setting range: 0 to 92 percent He setting: 1% increments Dive log Dive logging: Minimum of 15 hours, depends on settings Profile sampling rates: 15 or 30 seconds NiTek X Dive Computer User Manual v1.1...

  • Page 10: Warnings

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

  • Page 11: When Diving

    DCI. Use your NiTek X conservatively and in conjunction with other dive planning devices, such as dive tables. Do not rely on the NiTek X, or any similar device, as your sole means of avoiding decompression illness.
  • Page 12 Introduction NiTek X Dive Computer User Manual v1.1...
  • Page 13 Chapter 2 Using the NiTek X Summary This chapter provides topics about using, setting, and understanding each of the modes and options of the NiTek X. Content Getting started • 10 Accessing display modes and screens • 11 Button operation • 11 Surface mode •...

  • Page 14: Getting Started

    Before a dive • Check that the proper time and date are set. If you are traveling, your NiTek X may still be set to your home time zone • Check that the proper mixes and modes are set. Ensure that...

  • Page 15: Accessing Display Modes And Screens

    To access other modes or screens, requires the use of the NiTek X’s buttons. Button operation The NiTek X has two buttons (A (mode) and B (set)), which are used to access the different modes and screens. To use the buttons, simply press the button once or hold the button down depending on what you are trying to do.

  • Page 16: Surface Mode

    After several minutes of inactivity, the NiTek X will go into its “sleep” mode to conserve battery usage. To wake from sleep mode, momentarily press either button.

  • Page 17: Time Display And Set Mode

    (4) Seconds: This is the seconds for the time of day. To display the time and date: Time and date information is displayed when the NiTek X is the Surface mode screen. 1. To enter the Surface mode screen from any other screen, repeatedly press button A.
  • Page 18 24-hour format. For example, 1:00 PM would be 13:00 in 24-hour format. 4. When finished, press button A for 2 to 3 seconds to return to surface mode. NiTek X Dive Computer User Manual v1.1...

  • Page 19: Dive Option Set And Display Mode

    Using Dive Option Set and Display mode Dive Option Set and Display mode is when the NiTek X is operating in its normal mode, “OC” or “C/C” is displayed on the screen, and all computer mode functions are operational. Using these settings is described in the Dive Computer mode section.
  • Page 20 When the alarm is turned on, the “clock” alarm symbol is displayed. Dive Option Display and Set fields for screen three NiTek X Dive Computer User Manual v1.1...

  • Page 21: Setting Po2 Setpoints

    Different setpoints can be chosen to allow for use with different gas mixtures on any particular dive. You can also set the NiTek X to monitor an external oxygen cell in the rebreather. Not all of NiTek X Dive Computer User Manual v1.1...

  • Page 22: Setting Mix1 - Mix7 Gas Percentages

    PO2 and mix. To set PO2 setpoints: 1. If not already in closed circuit (C/C) mode, put the NiTek X in C/C mode by simultaneously pressing and holding buttons A and B for 2-3 seconds.

  • Page 23: Setting The Maximum Depth Alarm

    2 to 3 seconds to return to surface mode. Setting the Maximum Depth Alarm The NiTek X has a maximum depth alarm that is activated when the diver reaches the maximum depth that is set. When the max depth is reached, the screen backlight, current depth and maximum depth indicators will flash until you have ascended to a depth that is shallower than the maximum depth setting.

  • Page 24: Setting The Dive Time Alarm

    3 seconds to return to surface mode. Setting the Dive Time Alarm The NiTek X has a dive-time alarm that is activated when the diver reaches the maximum time that is set for the dive. When the dive time is reached, the screen backlight, dive-time and maximum dive-time alarm indicators will continue to flash until after you surface.

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

    Setting the Computer for Metric or Imperial operation The NiTek X can calculate and give you values in Imperial units or Metric units. When in Imperial, depth values are expressed in feet. When in Metric, depth values are expressed in meters.

  • Page 26: Setting The Dive Profile Sampling Rate

    (Salt or Fresh Water Use). To exit, press and hold button A for 2 to 3 seconds to return to surface mode. Setting for Fresh or Salt Water Use The NiTek X is capable of operating using fresh or salt water calculations. This is based on: •...

  • Page 27: Setting Screen Contrast

    Setting for Backlighting The NiTek X is capable of changing the length of time the screen backlight is lit to aid in visibility in poor lighting situations. The timeout ranges from 2 - 20 seconds in 2-second intervals, or ‘never’...

  • Page 28: Understanding Default Mode

    – the countdown will resume from the time the battery had been removed. Note: You should not rely on the NiTek X as the sole means of tracking your exposure to elevated partial pressures of oxygen. It is recommended that you use either a second computer or another tracking method, such as dive tables.

  • Page 29: Plan Mode

    If the computer is in default mode, a series of horizontal lines appears. If the NiTek X 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 30 Do not plan dives to depths deeper than those for WARNING: which the NiTek X 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 or 1.6 atmospheres.

  • Page 31: Computer Mode

    It is based on the FO2 settings for the mix selected. (4) O2 (OLI) bar graph: This is the oxygen limit index (OLI) that calculates the cumulative effect of your exposure to elevated NiTek X Dive Computer User Manual v1.1...

  • Page 32: Second Underwater Screen

    When all nine bars are displayed, it means that you are at or have exceeded the no-decompression limits. Second Underwater Screen While underwater, you can change to the second diving mode screen that displays additional information. When you switch NiTek X Dive Computer User Manual v1.1...

  • Page 33: Changing Gas Mixes Underwater

    2. Release button B to return to the primary diving mode screen. Changing Gas Mixes Underwater Because the NiTek X has the ability to use seven different gas mixes during a dive, you need the ability to switch between these mix settings while underwater. When you switch mix settings, the PO2 adjusts to reflect the current mixture you are breathing.

  • Page 34: Changing Setpoints Underwater

    PO2 of 1.4 or 1.6 atmospheres, depending on what was programmed. Changing Setpoints Underwater Because the NiTek X has the ability to be used with a closed- circuit rebreather, you can switch between different PO2 setpoints while underwater. When you change setpoints, the computer displays the current mixture you are breathing.

  • Page 35: Warnings While In Diving Mode

    You cannot lock in a setpoint if it causes you to exceed a PO2 of 1.6 atmospheres. Warnings While in Dive Mode While in diving mode, there are several warnings that you should be alert to. NiTek X Dive Computer User Manual v1.1...
  • Page 36 If you ascend and set the mix percentages, you can restart the dive. See “Understanding Default Mode” for more information. Ascent Rate Warning The NiTek X 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 When seven or more of the nine bars are displayed, the PGT graph flashes. If all nine bars are displayed, the NiTek X will change to the decompression mode. PGT limit warning bars flash on the screen Oxygen Limit Index (OLI) Warning The NiTek X’s oxygen limit index (OLI) reflects the cumulative...
  • Page 38 This indicates that you will have to limit your ascent time and enter a series of one or more decompression stops. Caution: Decompression diving is considered to substantially increase your risk of decompression illness. NiTek X Dive Computer User Manual v1.1...
  • Page 39 If you do not correct an indicated deco stop violation, Caution: the warnings continue for several minutes after surfacing. At this point, the computer will display a “Decompression Violation” warning with a countdown timer beginning at 24 hours. NiTek X Dive Computer User Manual v1.1...
  • Page 40 PO2, OLI and deco stop violations, and required decompression stops. For this reason, you should not, under any circumstance, use a NiTek X in such a way that would cause an out-of-range warning. Under such conditions, the risk of serious personal injury or death would be substantial.

  • Page 41: Log Mode

    For each dive, the NiTek X stores information, such as depth, time, gases, etc. in a log. This stored log information can be viewed directly from the NiTek X’s screen when in log mode. The logbook will hold a minimum of 15 hours, depending on settings. Each dive is assigned a log number and the day’s date, making it easy for you to toggle between...

  • Page 42: Profile Mode

    Repeatedly button B to scroll “down” through the profiled dives. To fast scroll, press and hold button B. When finished, press and hold button A for 2 to 3 seconds to return to surface mode. NiTek X Dive Computer User Manual v1.1...

  • Page 43: Oxy Mode

    Using the NiTek X OXY Mode Using an external cable and oxygen-sensor cell, you can use your NiTek X with a closed circuit rebreather to monitor the constant-PO2 setpoint and decompression information. Oxygen-analysis mode, screen 1 (1) mV reading: This is the initial part of the sequence for calibration of an oxygen-cell.
  • Page 44 6. To return to surface mode, press and hold button A for 2 to 3 seconds. 7. Set the NiTek X to “C/C” (closed-circuit) mode. It will display “EXT” instead of “SP” (setpoint), indicating that it is reading the PO2 level of the external oxygen-cell.

  • Page 45: Pc Transfer Mode

    PC or Mac computer with NiTek X Workbench™, and start the NiTek X Workbench™ program on the computer. 3. Repeatedly press button A on the NiTek X until “PC” is displayed. 4. Press button B to enter the PC transfer mode screen.

  • Page 46: Surface Mode (Upon Surfacing From A Dive)

    Once you surface from a dive, the NiTek X automatically switches to surface mode after 10 minutes. However, if surface interval is less than that time, the NiTek X will continue the dive. In addition to the normal information displayed in surface mode such as time of day, there is other information that is displayed that pertains to the dive you just completed.
  • Page 47 Using the NiTek X single (non-repetitive) dives. This is not the same as “time to fly.” On the NiTek X, these DESAT times are displayed until completely desaturated. (3) O2 OLI bar graph: This indicates CNS toxicity level at the end of the dive.

  • Page 48: Altitude Operation

    If the level of residual nitrogen calculated by the NiTek X is unusually high (seven or eight bars) when going to altitude, the computer will be unable to enter dive mode. Avoid taking the...

  • Page 49: Proper Handling

    Care and Maintenance Chapter 3 Care and maintenance Summary This chapter provides care and maintenance and battery information for the NiTek X. Content Proper handling techniques • 46 Low battery warning • 47 Replacing the battery • 47...

  • Page 50: Proper Handling Techniques

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

  • Page 51: Low Battery Warning

    Always have a low battery replaced promptly. • A depleted battery that is left in a NiTek X for a long period of time may leak. Replace battery promptly. Replacing the battery Battery replacement is an easy operation that can be done by the user.
  • Page 52 Care and Maintenance • CO8212 Battery Door Tool (provided with NiTek X) • CR123A Lithium battery • Silicone grease • Lint-free cloth • Cotton swabs • Pencil with a good eraser tip To replace the battery: 1. Locate the battery compartment. It is inside the small knurled cap on the upper-right side of the computer.
  • Page 53 Index Index conservatism or gradient factor · 18, 22 Contrast · 18, 25 A (mode) button · 11 accessing modes and screens · 11 alarms · 3 date · 12, 14 Dive Time Alarm · 21 log mode · 40 Maximum Depth Alarm ·...
  • Page 54 PO2 setpoints · 19 Maximum Time Alarm · 17, Pressure Gas in Tissue · 35 profile · 4 metric · 4 profile mode · 41 Metric or Imperial · 23 viewing · 41 NiTek X Dive Computer User Manual v1.1...
  • Page 55 · 14 size and weight · 5 sleep mode · 12 SP · 16 specifications · 5 year · 14 surface interval time · 45 surface mode · 12, 45 NiTek X Dive Computer User Manual v1.1...
  • Page 56 Index...

Table of Contents