NiTek Trio Dive Computer User Guide www.diverite.
Content DEVELOPED BY Dive Rite 175 NW Washington Street Lake City, FL 32055 Phone: 386.752.1087 Fax: 386.755.0613 Web: www.DiveRite.com COPYRIGHT NOTICE Copyright © 2009 Lamartek, Inc. dba Dive Rite WARRANTY INFORMATION Dive Rite will—at its sole discretion—repair or replace NiTek Trio components proved to be damaged by faulty manufacture or material, at no cost, for a period of up to one year (365 days) from the date of purchase. This manual is copyrighted by Lamartek, Inc. dba Dive Rite.
Content Table of contents Chapter 1 Introduction•1 Overview•2 Features and Functions•3 Specifications•5 Warnings•6 Chapter 2 Using the NiTek Trio•9 Getting Started•10 Accessing display modes and screens•11 Time Display mode•12 Compass Set and Display mode•14 Dive Option Set and Display mode•16 Plan mode•26 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•
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 • 5 Warnings • 6 When diving… • 7 NiTek Trio Dive Computer User Manual v1.
Introduction Overview Congratulations on your purchase of the NiTek Trio dive computer. The NiTek Trio is a sophisticated and comprehensive dive computer that was designed to offer you the latest in dive computer technology, safety, and reliability.
Introduction Features and Functions The NiTek Trio incorporates a number of important modes and features: • The NiTek Trio turns on automatically upon descent. • On the surface, the NiTek Trio displays a minimum of date, time and temperature when activated. • To conserve battery life, the NiTek Trio will enter the “Sleep” mode after several minutes of inactivity. • The NiTek Trio uses easily accessible and highly reliable push buttons instead of exposed electrical contacts.
Introduction stops are necessary or if the diver has ascended above a mandatory stop ceiling. Nitrox specific warnings occur when the diver approaches or exceeds a limiting PO2 of 1.6 atmospheres for all mixtures, and when cumulative exposure to elevated PO2s exceeds recommended limits.
Introduction Specifications Algorithm: Buhlmann ZH-L16 Sample tissues: 9 Tissue half-lives: from 5 to 640 minutes Size and weight Diameter: 2.5 in (62 mm) Height: 1.0 in (25 mm) Weight: 4 ounces (115 g) Display face Backlight illumination Low battery indicator Three user buttons Water immersion switch Depth sensor Sea or fresh water calibration Measuring range: 0 to 328 feet (0 to 100 m) measured every second Accuracy: +/- 3% + 2 feet (0.
Introduction Warnings This information has been developed for your safety. Please read and understand this manual completely before using your NiTek Trio dive computer. Important safety information: • Before using your NiTek Trio, it is extremely important that you read the following points—as well as similar warning and caution notices that appear throughout this manual. Failure to do so could result in damage to or loss of equipment, serious personal injury, or death.
Introduction formula designed to emulate how individuals in good general health and whose physical characteristics do not place them among those at higher risk of decompression illness (DCI) are assumed to absorb and release nitrogen from body tissues. Thus, the NiTek Trio cannot compensate for factors such as age, obesity, dehydration, cold, or exertion, which experts believe place divers at greater risk of DCI.
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.
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. Before a dive • Check that the proper time and date are set. If you have traveled, your NiTek Trio may still be set to your home time zone. • Check that the proper mixes are set for mix1, mix2 and mix3.
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. Accessing other modes or screens requires the use of the NiTek Trio’s buttons. Button operation The NiTek Trio has three buttons (select, mode, and set), which are used to access the different modes and screens.
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. 1 4 2 3 In time display mode, “TEMP” and current temperature (1) is displayed at the top of the screen, and the seconds (2), date (3) and time (4) are displayed. Time can also be displayed in 24-hour (military) time.
Using the NiTek Trio Entering time display mode from another mode When you are using other modes, it is very easy to return to the time display mode. To enter time display mode from another mode: 1. Press and hold Mode for two seconds. —OR— 2. Repeatedly press Mode until “TEMP” and current temperature is displayed. Activating the back light The NiTek Trio has a back light that illuminates the screen. To activate the back light: 1. 2. Press either the Select or Set button.
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. 1 2 Compass display (1) Angular display, in cardinal points and degrees (2) Current time To enter compass mode: 1. Repeatedly press Mode until the heading and time is displayed at the top of the screen.
Using the NiTek Trio 3. 4. Slowly rotate the compass in a circle until “ROTATE OK” is displayed at the top of the screen. Press and hold Set again for 4-5 seconds until the heading display and time is shown once more. Saving a compass heading You can save a heading on the compass display to return to later, or to remind you of a heading to follow. 1 3 2 Saved compass heading (1) Angular display, in cardinal points and degrees (2) Current time (3) Saved heading To save a heading in the compass: 1. 2.
Using the NiTek Trio Dive Option Set and Display mode Dive Option Set and Display mode is where all “dive” option settings are displayed and set up. 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. Using computer mode Computer mode is when the NiTek Trio is operating in the normal computer mode.
Using the NiTek Trio (4) Maximum operating depth (MOD) for PO2 setting: This is the safe operating depth (maximum) for the mix selected. This is based on the limiting PO2 factor you have selected. Additional options and settings that can be selected include: • Dive safety factor • Dive profile sampling rate • Salt or fresh water use • Maximum depth alarm • Maximum time alarm • Metric or Imperial units of measurement These are described in the following paragraphs. To enter Dive Option Set and Display: 1. 2.
Using the NiTek Trio The percentage will increase from air to 99 before repeating (The percentage will stop at 32 percent and again at 99 percent). Press and hold Set to advance the percentages rapidly. Note: Nitrox” is displayed if mix1 is set for a FO2 of greater than 21 percent. If mix2 or mix3 is set for 21 percent (air), nothing appears until that mix is selected. If mix1 is in “default,” the Nitrox indicator flashes. For more information on “default,” see “Understanding FO2 default.” 8.
Using the NiTek Trio 6. When finished, press Select to advance to the next option (dive time alarm). To exit, press and hold Mode for 1 to 2 seconds to return to time mode. 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. Dive time alarm can be used when you want to set a maximum dive time for your dive.
Using the NiTek Trio 2. 3. 6. Repeatedly press Select until the screen changes and “DEEPSTOP” is displayed and “ON” or “OFF” is flashing. Press Set to turn deepstop on or off. Deepstop “ON/OFF” flashes. When finished, press Select to advance to the next option (fresh or salt water). 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.
Using the NiTek Trio Note: When the computer’s memory storage is full, it overwrites the oldest dive profile data stored with the new information. To set the dive profile sampling rate: 1. 2. 3. 4. Repeatedly press Mode until “DIVESET” is displayed and flashing on the screen. Repeatedly press Select until “Pt” and the sampling rate number is flashing. Press Set to toggle between 10- and 30-seconds. When finished, press Select to advance to the next option (user safety).
Using the NiTek Trio To set for metric or Imperial operation: 1. Repeatedly press Mode until “DIVESET” is displayed on the 2. 3. screen. Press and hold Select and Set simultaneously for 5 to 6 seconds. The computer beeps and changes to either feet (ft) or meters (m). When finished, press and hold Mode for 1 to 2 seconds to return to time mode.
Using the NiTek Trio When and how FO2 default occurs One factor in determining if and when your NiTek Trio’s FO2 setting is in default is whether you set one or more mixes for air or Nitrox. • If you set any mix for air (FO2 of 21 percent), the computer assumes that subsequent dives will be made using air. This means that the mix set for air remains set for air, dive after dive, without defaulting.
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. 24 NiTek Trio Dive Computer User Manual v1.
Using the NiTek Trio ! ! Note: You cannot select gauge operation if the computer calculates that there is still residual nitrogen remaining from a previous dive or if the surface interval is less than 10 minutes. Also, you cannot return to dive computer operation until 48 hours have passed since your last dive. In gauge mode, you can still set the profile sampling rate, salt or fresh water use, max depth and dive time alarms. For more information, see “Dive Option Set and Display mode.
Using the NiTek Trio Plan mode Plan mode enables you to determine how long you can stay at various depths while remaining within the no-decompression limits. The no-decompression time limits are based on the percentage that is set for mix1. If you are making a dive within 24 hours of a previous dive, the no-decompression time limits are based on the residual nitrogen remaining. The two most important values that are displayed on the screen in plan mode are the depth and no-decompression time limit.
Using the NiTek Trio To enter Plan mode: 1. Repeatedly press Mode until “PLAN” is displayed on the screen. Note: Plan mode is not available if the Trio computer has been set to “gage” mode. 2. Press Set to advance the depth or press Select to decrease the depth. The no-decompression time limits change automatically based on the depth. 3. If you want to exit plan mode, press and hold Mode for 1 to 2 seconds to return to time mode.
Using the NiTek Trio Dive Computer mode Dive computer mode is automatically entered when the computer enters the water. It begins performing its dive calculations once you descend below 4 feet (1.2 meters). Caution: Prior to diving, always check to ensure that the FO2 settings are correct and that the computer is not in FO2 default. While in diving mode, the computer calculates and displays information about your dive and prompts you with safety stop information and warnings if needed.
Using the NiTek Trio “CNS” clock. This graph increases when you descend due to higher partial pressures and may decrease when you ascend. (4) Remaining no-decompression limit (NDL): This is the time that is remaining (in minutes) before you reach the no-decompression limit. This NDL time limit increases when you ascend and decreases when you descend. (5) Dive time: This is the time spent (in minutes) underwater, measured from the time you descended below 4 feet (1.2 meters).
Using the NiTek Trio 3. The back light turns on, and the second secondary screen is displayed. Repeat to return to the primary diving mode screen. To store or insert a bookmark into the dive graph profile: 1. Press and hold the Set button for 1-2 seconds. The dive information will be stored for later review.
Using the NiTek Trio descend below 20 feet (6 meters) during this time, “STOP” and the three-minute countdown disappear; and the NDL readings reappear. 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. 2. 3. Press and hold the SET button for 1-2 seconds.
Using the NiTek Trio Warnings while in diving mode While in diving mode, there are several warnings that you should be alert to. Default warning If any mix is in default at the beginning of a dive, an audible alarm sounds for three seconds. If you ascend and set the mix percentages, you can restart the dive. The upper display also blinks “WATER SET FO2!”, which is the best indication that the computer is defaulted before entering the water.
Using the NiTek Trio Ascent rate warning with “SLOW” and depth blinking PO2 limit warning The PO2 warning indicates that you have exceeded the set PO2 and/or 1.6 atmospheres for the gas you are breathing. If you exceed the set PO2, an audible alarm sounds, and the PO2 symbol and PO2 value blink. “PO2 CAUT” (caution) also displays. If you exceed a PO2 of 1.6 atmospheres, in addition to the above audible alarm, “PO2 ALARM” and the OLI bar graph will blink.
Using the NiTek Trio When seven of the O2’s eight bars are displayed, the computer’s audible alarm sounds for three seconds, and “OLI CAUT” (caution) blinks on the upper display. If you do not ascend to a shallower depth, and all eight of the O2’s bars are displayed, the alarm will sound again and “OLI ALARM” blinks again. “OLI ALARM” continues to flash until the O2 bar graph drops to seven bars. This warning will appear in log mode after the dive.
Using the NiTek Trio Decompression warning If you exceed the no-decompression limits, the computer enters decompression mode. An audible alarm sounds for twice for three seconds and “DECO STOP” blinks, indicating that you have decompression stop requirements. Caution: Decompression diving is considered to substantially increase your risk of decompression illness more than dives made within nodecompression limits.
Using the NiTek Trio Decompression stop violation warning A decompression stop violation warning takes place when you ascend to a shallower depth than the indicated stop depth or if you do not spend sufficient time at the required depth before ascending. When you enter this violation, the computer’s audible alarm sounds twice for three seconds each, and the current depth, stop depth, stop time, and “DECO AL STOP!” blink.
Using the NiTek Trio Gauge mode Gauge mode is automatically entered when the computer enters the water. 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.
Using the NiTek Trio 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 userresettable Because of the amount of information the NiTek Trio stores, there are three pages that you can toggle between for each dive. Each dive is assigned a number, beginning with one, for the day.
Using the NiTek Trio (1) Dive log number: This is the dive log number. Each dive has three pages of logged information. (2) Date: This is the month and day of the dive. (3) Dive number for day: This is the dive number for the day. (4) Descent time: Time the dive started, indicated by a down arrow. (5) Altitude Rank: The altitude ranking at which the dive was made. (6) Dive page number: This is the page number for the dive. Each dive has three pages of logged information.
Using the NiTek Trio Profile mode Profile mode enables you to see a record of the depths you reached at various points during a dive. You can display a detailed profile of each dive stored in the log. When a dive is selected, the computer automatically displays the depth and the time in the dive when you reached that depth until it reaches the end of the dive. Dive profile information is either stored in 10- or 30-second intervals during a dive. This must be set in dive mode before a dive.
Using the NiTek Trio 2. 3. 3. 4. Using Select and Set, scroll through the dives until you reach the dive you wish to review. Press Mode again to enter the Profile mode. “WAIT” may be displayed momentarily, and then the logged dive information and graph will be displayed. Once a dive profile is selected, the computer automatically progresses through the different depths and times of the dive. If you want to exit profile mode, press and hold Mode for 1 to 2 seconds to return to time mode.
Using the NiTek Trio 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. 1 2 4 3 History mode, Dive and Gage (1) Total number of dives: This corresponds to the number of dives recorded on the NiTek Trio in the particular mode.
Using the NiTek Trio PC Transfer mode You can transfer the stored dive log information to your personal computer using the optional 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. We apologize for this inconvenience. To enter PC Transfer mode: 1. 2. 3. 4.
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.
Using the NiTek Trio (2) O2 OLI bar graph: This indicates CNS toxicity level at the end of the dive. This drops as your surface interval time increases. (3) Nitrogen (N2) exposure bar graph: This is the amount of residual nitrogen in your body at the end of the dive. This drops as your surface interval time increases.
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.
Using the NiTek Trio dive mode. This can interfere with the computer’s ability to function accurately. The NiTek Trio monitors and displays altitude information in all modes, except PC Transfer mode. Upon arriving at altitude, the NiTek Trio’s residual nitrogen bar graph may show that there is excess nitrogen present, even though you may not have made any dives in the preceding 24 hours.
Chapter 3 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.
Care and Maintenance Proper handling techniques The NiTek Trio is constructed to withstand the most demanding diving conditions. It is, however, a high precision instrument, which requires proper care. Caution: Failure to follow these handling techniques may result in damage to the NiTek Trio. • • • • • • • • • • • Do not store the computer in hot and/or humid environments. The pressure transducer is sensitive to both heat and humidity. If impaired, it may cause incorrect altitude or depth readings.
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. Cautions • All NiTek Trio functions may cease within two to three days of the low battery symbol first appearing. Always have low batteries replaced promptly. • A depleted battery that is left in a NiTek Trio for a long period of time may leak.
Index A accessing modes and screens · 11 activating back light · 13 alarms · 3 gauge mode · 24 maximum depth · 17 maximum depth alarm · 18 maximum time · 17 algorithm · 5 altitude · 3, 5 altitude operation · 45 altitude symbols · 45 ascent rate · 27 ascent rate warning · 31 ascent time · 34 log mode · 38 B back light · 4 activating · 13 battery · 5 low battery warning · 49 replacing · 49 Bookmark · 29 Buhlmann · 5 button operation · 11 C Care and Maintenance · 47 proper handling techniques · 48 character d
Index log mode · 38 dive log · 4, 5 dive option set and display mode · 16 dive profile · 4 dive time · 28 gauge mode · 36 log mode · 38 diving after a dive · 10 before a dive · 10 during a dive · 10 diving mode · 27 gauge mode · 36 primary screen · 27 secondary screens · 28 H History mode · 41 viewing · 41 I Imperial · 4, 17 L log · 4 log mode · 37 viewing · 38 M F features and functions · 3 flying no-fly symbol · 44 FO2 default · 22 dealing with · 23 how it occurs · 23 FO2 percentages log mode · 38 fres
Index N R NDL · 25, 28 nitrogen log mode · 38 no-decompression limit · 25, 28 no-fly symbol · 44 residual nitrogen · 25, 28, 34, 44 O OLI · 28, 44 log mode · 38 options compass calibrating · 14 compass heading · 15 computer mode · 16 oxygen limit index · 28, 44 oxygen limit index warning · 32 P PC transfer mode · 4, 42 entering · 42 percentages mix1, mix2, mix3 · 17 plan mode · 25 PO2 · 16 PO2 limit warning · 32 profile · 4 profile mode · 39 viewing · 39 profile sampling rate · 17 description · 20 gaug
Index viewing · 43 W T temperature · 3, 28 gauge mode · 36 log mode · 38 thermometer · 5 time dive time alarm · 19 time and date · 12 time and date setting · 12 time mode · 12 entering from another mode · 13 setting time and date · 12 toggling character display · 13 54 warnings · 6 ascent rate · 31 decompression stop violation warning · 34 decompression warning · 33 default warning · 31 diving mode · 31 low battery warning · 49 oxygen limit · 32 PO2 limit warning · 32 water fresh or salt · 4 salt or fr