NiTek Q4 Computer
Contents
1. DIVE RITE Equipment for Serious Divers CO8400 NiTek Q4 Computer User Manual www DiveRite com CO8400 NiTek Q4 Computer User Manual_Feb 2 2011 IMPORTANT WARNINGS A A A A A A A A A A Read this manual carefully before diving with the NiTek Q4 It is imperative that you fully understand the func tions and displays of the computer and that you are proficient in their use prior to diving The NiTek Q4 is an electronic device and electronic devices can fail NEVER dive this computer without a back up device or dive tables Before using your NiTek Q4 it is extremely important that you read and understand each warning as well as warnings and cautions that appear throughout the manual Failure to do so could result in damage to or loss of equipment serious personal injury or death Before diving you should have the proper training from a qualified instructor and obtain certification from a recognized training agency Use of the NiTek Q4 in conjunction with Enriched Air Nitrox EANx requires that Q4 divers also be trained and certified for Nitrox diving Before diving with your NiTek Q4 you should have the proper training from a qualified instructor and obtain certi fication from a recognized training agency in full Trimix If you plan to use the NiTek Q4 as a fourth cell monitor and in conjunction with your closed circuit rebreather you should have the proper training from a qualified instructor and obtain2. after 10 minutes of disuse to conserve battery use To bring the computer out of hibernation press either A or B button To extend the battery charge put the computer back into hibernation whenever it is not in use To do this press and hold the A button to return to the Surface mode screen Then press the B button for 2 3 seconds CO8400 NiTek Q4 www DiveRite com be USING THE NiTek Q4 DIVE RITE SURFACE Mode The SURFACE mode is the NiTek Q4 s default screen At the i surface the computer automatically returns to this mode Battery Charge Indicator from any other screen after 20 seconds slightly longer PM than 20 seconds when in profile and compass modes i Upon surfacing from a dive the computer also returns to ate 0 f 1 2 06 i 1 9 Time the SURFACE mode screen and displays additional post dive information see page 18 RESH To manually return to the SURFACE mode press and hold PO2 MIX the A button for 2 3 seconds O C 1 6 1 0216 HE49 The SURFACE mode displays battery charge status date FRESH or time choice of FRESH or SEA calibration open circuit O C P02 MIX 02 HE SEA or closed circuit C C mode and the first gas mix you will Calibration use when diving SURFACE Mode Screen To switch between O C and C C simultaneously hold buttons A and B for 2 3 seconds Date and Time IMPORTANT The date and time must be correctly set in order to accurately track your dives Setting the date and time
3. amp B buttons for 5 seconds the OXY Mode allows you to set set points and plug in an external 4th cell to directly monitor the rebreather loop 02 See page page 9 for information on how to set setpoints To use the 4th cell it must first be calibrated This Oi Mode Sereen is done on the surface exposing the cell to pure 02 uncalibrated 1 mV Reading A reading of 0 mV shows that the oxygen cell has not been connected It will show a numeric reading when it has been connected 2 uncalibrated This shows that the oxygen cell has not been connected or calibrated to a standard gas mixture yet 3 CAL 02 gt This will appear on the screen when the oxygen cell has been connected and is ready to be calibrated CO8400 NiTek Q4 www DiveRite com N DIVE RITE DIVE MODE To Calibrate The 4th Cell in OXY Mode Using a coin remove the USB cap on the back of the NiTek Q4 and attach the appropriate external cable and oxygen cell to the connector Be sure to keep water from getting into the compartment Repeatedly press the A button until OXY is displayed Press the B button to activate the screen O mV Uncalibrated is displayed Press the A button CAL 02 is displayed on the screen Press the B button to enter the calibrate mode of the oxygen cell using a source of 100 oxygen for reference xx mV calibrated where xx is the mV reading of your oxygen cell and the oxygen percentage is displayed
4. decompression limits will be shorter Depending on how much residual nitrogen is present there may not be a NDL time for some deeper depths If this takes place the Q4 will display a series of horizontal dashes Similarly if a combination of depth and F02 would cause a diver to exceed the selected P02 limit either 1 4 or 1 6 a series of horizontal dashes appear in the place of the no de compression limit Using the PLAN Mode Repeatedly press the A button until PLAN is displayed Press the B button to enter the PLAN mode screen Press the B button to advance the depth The no decompression time limits change automatically based on the depth When finished press and hold the A button return to the SURFACE mode A WARNING Do not plan dives to depths deeper than those for which the NiTek Q4 is capable of displaying an available no decom pression limit Doing so could cause you to exceed the no decompression limits or a limiting P02 of 1 4 or 1 6 atmo spheres This may increase your risk of decompression sickness or central nervous system CNS oxygen toxicity and can lead to serious personal injury or death oe L TE LOG Mode The NiTek Q4 stores information such as depth time and gases DIVE T Min for every dive in a log This stored information can be viewed on 85 screen in the LOG mode The logbook stores a minimum of 15 hours depending on settinqs Each dive is assigned a log number and the date the dive is made
5. enables the NiTek Q4 to keep track of dives chrono logically The internal clock is also used for decompression calculations If you travel to a different time zone set the local time before diving The time and date will have to be reset if the battery becomes completely discharged Date This is the month and the day The first digit is the month and the second digit is the day The 07 represents TIME Mode Screen July and 12 represents the 12th day of the month 2011 represents the year Time This is the time of day expressed in hours minutes and seconds Time can also be displayed in a 24 hour clock military time The 10 represents elapsing seconds 19 represents minutes after the hour and 06 represents the hour of the day Setting the Date and Time Setting the date and time are done in the TIME mode You can enter or change each element in this mode From the SURFACE mode scroll through the menus to the TIME mode screen pressing the A button The seconds will be flashing Press the B button to enter the TIME mode Press the B button to reset the seconds to 00 Press the A button to scroll to minutes Press the B button to set the accurate time Press the A button to lock in your time To exit press and hold the A button for 2 3 seconds to return to the Sur face mode Ea L J Continue setting the hours year day and month using the A and B buttons as directed above To chang
6. making it easy for you to toggle between the FRESH dive log pages TUT Tm BEN 0221 HE20 1 Log Entry Number This is the sequence in which the log appears The most recent log entry has the lowest log num LOG Mode Screen ber beginning with Log 1 When the computer s memory is full the oldest dives are overwritten with the new dives This causes the log entry number assigned to an earlier dive to change CO8400 NiTek Q4 www DiveRite com b gt DIVE RITE MENUS 2 Max Depth This is the maximum depth reached during the dive 3 Date This is the month and day of the dive 4 Dive Time This is the actual bottom time for the dive 5 F02 Gas Percentage This is the 02 that you entered for the dive All calculations were based on this percentage 6 HE Gas Percentage This is the HE that you entered for the dive All calculations were based on this percentage To View the Dive Log 1 Repeatedly press the A button until LOG is displayed 2 Press the B button to enter the LOG mode screen 3 Press the B button change to the log page displaying your most recent dive OR Repeatedly press the B button to scroll through the logged dives from the newest to the oldest To rapidly scroll press and hold the B button 4 When finished press and hold the A button return to the SURFACE mode PROFILE Mode PROFILE mode enables you to see a graphic representation of your dive The NiTek Q4 can display a deta
7. on the screen 5 Return to the SURFACE mode screen by pressing and holding the A button for 2 3 seconds 6 Set the NiTek Q4 to the C C mode It will display EXT instead of SP setpoint indicating that it is reading the P02 level of the external oxygen cell aoe d Ji Z C Web Resource See your local Dive Rite dealer to purchase the Fischer connection cable required to plug into T 3 xo o 4 a4M x PC Mode Workbench dive software will allow the Q4 diver to perform dive planning on either a PC or MAC An optional upgrade to the Workbench Logbook will allow you to upload dive data using a USB interface cable and view dive profiles This upgrade is due to be released in mid 2012 For more information about availablility and how to purchase Workbench Logbook software contact Dive Rite at 800 495 1046 CO8400 NiTek Q4 www DiveRite com Dom DIVE RITE DIVE MODE COMPASS Mode The NiTek Q4 has a digital compass that is displayed on the second underwater screen in DIVE mode The compass must calibrated before use To Calibrate Your Digital Compass From the SURFACE mode screen repeatedly press the A button to scroll to the COMPASS screen COMPASS CAL gt 1 Press and hold the B button while holding the ones MIH eel computer in a horizontal position Holding the unit flat smoothly rotate the computer twice in a 20 sec ond period Following this exercise a Calibration Comp
8. the B button to change the brightness When you are satisfied with the display brightness press the A button to advance to the MIX number option To exit press and hold the A button for 2 3 seconds to return to the SURFACE mode CO8400 NiTek Q4 www DiveRite com N DIVE MENUS Dom RITE PLAN Mode PLAN mode is a dive planning tool that enables you to determine how long you can stay at various depths while remaining within no de yi compression limits NDL The no decompression limits are based on 30 0 r 99 the mix that is currently displayed If you are making a dive within 24 Min NDL hours of a previous dive the no decompression limits are adjusted 12 for residual nitrogen MIX The two most important values that are displayed on the screen in PLAN 1 0216 HE O00 PLAN mode are the depth and no decompression time limit PLAN Mode Screen 1 Depth When you first enter PLAN mode the initial depth displayed is 30 feet 9 meters You can ad vance the depth in 10 foot 3 meter increments Fifteen different dive plan increments can be displayed to a maximum depth of 170 feet 51 meters 2 No decompression limit NDL The no decompression limit is dependent upon the depth displayed and the current 02 F02 setting The NDL is displayed in minutes and is found in the upper right portion of the PLAN mode screen If the NiTek Q4 calculates that there is residual nitrogen present from previous dives your no
9. C 1 6 1 0221 HE elevated partial pressures of oxygen P02 This bar graph can display up to nine bars If all bars are displayed Primary Underwater Screen it means that you have used 100 percent of your CNS clock triggering a visual warning This graph increases when you descend due to higher partial pressures and may decrease when you ascend VISUAL WARNING Oxygen Limit Index OLI Warning The OLI warning accounts for the intensity and length of your exposure to partial pressures of oxygen When 7 of the OLI bars are displayed the OLI graph flashes as a warning to ascend to a shallower depth If you fail to heed this warning and all 9 of the bars are displayed the graph continues to flash until you ascend to a shallower depth and the graph drops to seven bars CO8400 NiTek Q4 www DiveRite com N DIVE DIVE MODE A RITE 5 Dive Time This is the time spent in minutes and seconds underwater measured from the time you descended below 5 feet 1 5 meters 6 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 as you ascend and decreases as you descend Mix Number This is the mix number for which the computer is currently calculating dive data 02 Percentage This is the oxygen percentage programmed for the mix number that is displayed HE Percentage This is the helium percentage programmed for the mi
10. HEOO Your maximum operating depth MOD is also displayed on SET Screen One The MOD is the safe operating depth maxi mum for the mix selected and will automatically update to reflect the chosen P02 limit either 1 4 or 1 6 To enter the Dive SET mode from the Surface screen 1 Press the A button until SET is displayed 2 Press the B button to enter the dive set up option screen The MIX number will be flashing Programming Gas Mixes When you have entered the Dive SET mode and the MIX number is flashing Press the B button to change to the desired mix number that you want to set or change Press the A button to set the mix number The computer will automatically advance to the P02 set alarm option Press the B button to toggle between 1 4 and 1 6 See instructions for setting setpoints on p 9 Press the A button to set the maximum P02 for this mix The computer will automatically advance to the 02 option Press the B button to select your 02 for this mix Press the A button to lock in your 02 and the computer will automatically advance to the HE option Press the B button to select your HE for this mix The computer will automatically advance to SET screen two To exit press and hold the A button for 2 3 seconds to return to the Surface mode Oy eS iS 2 NOTE Up to seven different gas mixes can be programmed but if you are only using one mix you only need to set MIX 1 A The NiTek Q4 starts the dive on the last g
11. LED always on Visible in complete darkness Scratch resistant mineral glass Low battery indicator Two user buttons Visual alarms Imperial or metric Depth Sensor Sea and freshwater calibration Rated to a depth of 492 feet 150 meters measured every second Accuracy 3 2 feet 0 5 meters Surface interval time from 0 24 hours Diving Time from 0 699 minutes Ascent rate warning Depth Range Ascent Rate 0 19 feet 0 5 9 meters 26 feet 8 meters per minute 20 58 feet 6 17 9 meters 39 feet 12 meters per minute 59 feet 18 meters or deeper 52 feet 16 meters per minute Clock Accuracy 30 seconds on average per month 24 hour display Daytime with seconds and hr min sec or total min sec Thermometer Measuring range 40 F 176 F 40 C 85 C Accuracy 4 F 2 C Measurement interval every second during the dive Altitude Altitude function monitoring from 0 to 19 685 feet 6 000 meters Battery Lithium polymer 3 7V rechargeable Average battery life About 3 years 50 dives per year USB cable included 120v US AC charger Breathing Gas Mixes 7 02 setting range 8 99 02 settings 1 increments 3 gas normoxic Trimix 21 99 O2 0 79 He 7 gas hypoxic Trimix 8 99 O2 0 92 He Dive Log Dive logging Minimum of 15 hours depending on settings Profile sampling rates 15 or 30 seconds Uploadable via standard USB cable included Optional Workbench logbook program Optional Accessories Bu
12. as mix used or viewed in the SET mode not on MIX 1 Be sure to check and set your mix number before your dive A WARNING It is strongly recommended that you use either a secondary computer or dive tables as a backup to the NiTek Q4 CO8400 NiTek Q4 www DiveRite com MENUS b gt DIVE RITE To Set P02 Setpoints Closed Circuit Rebreathers only NOTE If you only plan on using one P02 setpoint and mixture on your dive you only need to set that P02 and mix While in the SURFACE mode put the computer into C C mode by pressing and holding the A and B buttons for 2 3 seconds From the SURFACE mode screen repeatedly press the A button to reach the SET screen eS n J SET Screen Two The NiTek Q4 has maximum depth and time alarms that can be set on SET Screen Two These alarms will be activated when the diver reaches selected presets When the maximum depth is reached the current depth indicator will flash until you ascend to a depth that is shallower than the maximum depth you have set The Maximum Depth alarm can be set from 0 492 feet 0 150 meters When the maximum dive time is reached the dive time and maxi mum dive time alarm indicators will continue to flash until after you surface Press the B button to enter the SET screen The mix number will be flashing Press the B button to toggle through the mix numbers Press the A button to lock in the mix number and SP will begin flashing Press the B but
13. before diving at altitudes substantially above sea level you already understand that this is to be expected By ascending to a higher altitude from a lower one your body has more nitrogen saturated in body tissues than would be present had you spent the preceding 24 hours at the higher altitude By displaying residual nitrogen and a surface interval your NiTek Q4 is merely reflecting this fact A When traveling by air be sure to carry the NiTek Q4 in your hand luggage or the pressurized cabin not the cargo hold Otherwise the NiTek Q4 could enter dive mode while flying CO8400 NiTek Q4 www DiveRite com N DIAA vce gt gt RITE WARNINGS While In DIVE Mode While in Dive mode there are several visual warnings that you should be alert to and heed DIVE Min e Ascent Rate Warning 85 2 000 37 e P02 Limit Warning MAX Min NDL e OLI Oxygen Limit Index Warning 12 FRESH e Decompression Stop Violation Warning Ascent Rate Warning If your ascent rate exceeds the following limits SLOW flashes on Primary Underwater Screen the screen and will continue until you slow your ascent to an accept Ascent Rate Warning able rate or you reach 5 feet 1 5 meters Depth Range Ascent Rate ET 0 19 feet 0 5 9 meters 26 feet 8 meters per minute y 20 58 feet 6 17 9 meters 39 feet 12 meters per minute 59 feet 18 meters or deeper 52 feet 16 meters per minute P02 Limit Warning The P02 warning indicates that
14. certification from a recognized training agency in closed circuit rebreather diving The NiTek Q4 is not for commercial or military divers whose activities may take them beyond the commonly ac cepted depth limits for recreational or technical diving You should never share or trade your NiTek Q4 or any other dive computer during a dive You should never lend your dive computer to another diver until it fully clears which means that no measurable residual nitrogen remains after previous dives and the computer no longer displays the desaturation time indicator Your com puter gathers information during a dive that is applicable only to you If you share or trade your computer with another diver your decompression limits will be inaccurate which may cause decompression sickness DCS You should use the same computer for all repetitive dives in the same repetitive dive series thereby accurately monitoring your total exposure to oxygen nitrogen and helium The NiTek Q4 does not physically measure the amount of nitrogen or helium present in body tissues or the rate at which these gases are absorbed or released The NiTek Q4 monitors depth and time and uses this data to work a mathematical formula designed to emulate how individuals in good general health whose physical conditions do not place them at a higher risk of DCS are assumed to absorb and release nitrogen and helium from body tissues This computer cannot compensate for factors s
15. d in hours and minutes that must pass before the re sidual nitrogen levels drop to a point where subsequent dives are treated as single non repetitive dives This is not the same as time to fly time On the NiTek Q4 DESAT times are displayed until completely desaturated 2 Surface Interval Time This is the amount of time you have spent on the surface since your last dive if there is residual nitrogen present from a previous dive It is displayed up to 24 hours of surface interval time 3 OLI Bar Graph This indicates the CNS toxicity level at the end of the dive This drops as your surface interval time increases 4 PGT 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 A WARNING It is strongly recommended that you wait at least 24 hours following any dive before flying in an aircraft or driving to alti tude Failure to allow sufficient surface interval time before doing so may increase your risk of decompression sickness DCS Altitude Operation The NiTek Q4 adjusts automatically for diving at altitude The Q4 monitors altitude information in all modes except PC transfer mode Upon arriving at altitude the NiTek Q4 s PGT bar graph may show that there is excess nitrogen present even though you may not have made any dives in the preceding 24 hours If you have obtained altitude specialty diver training which everyone should do
16. e to 24 hour Military time press the B button when PM is flashing CO8400 NiTek Q4 www DiveRite com N DIVE MENUS Bom RITE Menus Dive Option SET and Display Mode The dive option SET and display mode is where all dive settings are programmed including your P02 alarm or setpoint SP for each gas 02 HE the maximum safe operating depth MOD an optional maximum depth alarm a maximum dive time alarm conservatism gradient factor options a sampling rate for the log book the FRESH or SEA water option and screen brightness control When the computer is in this mode SET is displayed in the lower left hand corner of the screen There are four SET screens that are used to set up your entire dive planning options SET Screen One is where you will program your mixes including the following options 1 MIX Number This is the mix number you are setting 2 P02 Setting or Setpoint SP Setting This is the P02 setting for the mix number selected on O C mode or SP setting in C C mode The P02 can be set for either MAX 1 4 or 1 6 in O C mode and the SP can be set for either 103ft 0 4 to 1 6 in C C mode FRESH 3 F02 This is the oxygen percentage for the mix num ber selected The 02 range is 21 99 4 HE This is the helium percentage for the mix number selected The HE range for normoxic Trimix is 0 79 SET Screen One and the HE range for hypoxic Trimix is 0 92 SP MIX SET 0 4 1 0221
17. iled profile of each dive stored in your log showing the depths you reached at various points during your dive When a dive is selected the computer automatically displays the depth and the time during the dive when you reached that depth until it reaches the end of the dive Dive profile information is either stored in 15 second or 30 second intervals during a dive This must be set prior to making your dive Refer to Setting the Dive Log Profile Sampling Rate on page 11 for step by step in structions The dive number and date of the dive are displayed when you scroll through your dives making it easy to find the dive profile you want to view 1 Dive Log number This is the dive number that corresponds to the dive number when in LOG mode 2 Max Depth This is the maximum depth reached during the dive 3 Dive Time This is the actual bottom time for the dive To View a Dive Profile 1 Repeatedly press the A button until PROF is displayed 2 Press the B button to enter the PROFILE mode screen 3 Press the B button change to the profile page displaying PROFILE Mode Screen your most recent dive OR Repeatedly press the B button to scroll through the dive profiles from the newest to the oldest To rapidly scroll press and hold the B button 4 When finished press and hold the A button return to the SURFACE mode OXY Mode When diving your Q4 in the closed circuit CC mode to switch to CC press and hold both the A
18. iving wipe the computer dry and store it in a location separate from other damp items Battery care and maintenance see page 6 Pe Failure to follow these handling techniques may result in damage to the NiTek Q4 1 i Do not store the computer in hot humid or wet environments The pressure transducer is sensitive to both heat and humidity If impaired it may cause incorrect altitude or depth readings When in hot and or humid environments dip the computer in water for several minutes to cool it to room tem perature before using it If it is cold allow the computer to warm to room temperature Do not take it underwater immediately after doing so If the NiTek Q4 does not appear to be functioning properly do not use it to dive Return it to your authorized Dive Rite dealer for repair The NiTek Q4 should not come in contact with solvents or any type of chemical substances Do not use compressed air to dry the NiTek Q4 Do not use the NiTek Q4 in hyperbaric chambers unless the device can be fully submerged in water inside the chamber during recompression CO8400 NiTek Q4 www DiveRite com be WARRANTY amp ACCESSORIES DIVE RITE Warranty Information Dive Rite will at its sole discretion repair or replace NiTek Q4 components proved to be damaged by faulty manufac ture or material at no cost for a period of up to one year from the date of purchase This warranty applies only to the original purchaser It does n
19. lete messagewill be displayed aw pe ae Web Resource Go to Dive Rite TV for a step by step video showing compass calibration http www diverite com tv gear DIVE Mode The DIVE computer mode is automatically entered when the computer enters the water It begins performing its dive calculations once you descend below 5 feet 1 5m While in DIVE mode the computer calculates and displays informa tion about your dive and prompts you with safety stop information and warnings if needed When diving there are two screens you can toggle between and you can switch to different gas mixes and setpoints when needed Primary Underwater Screen The primary underwater screen in DIVE mode displays your depth dive time max depth remaining no decompression time whether you are in open circuit O C or closed circuit C C mode mix P02 mix number 02 percentage HE percent age and OLI oxygen limit indicator and PGT pressure gas in tissue bar graphs which are graphic representations of your CNS clock 1 Depth This is your current depth DIVE T Min 2 Maximum Depth This is the maximum depth you have 75 2 009 39 reached during your dive MAX 3 P02 This is the partial pressure of 02 at your currentdepth 100 ft It is based on the F02 settings for the mix selected OL i 4 02 OLI Bar Graph This is the oxygen limit index OLI Bar PO2 MIX that calculates the cumulative effect of your exposure to O
20. lock in a setpoint and return to the primary diving mode screen NOTE You cannot lock in a setpoint if it causes you to exceed a PO2 of 1 6 atmospheres A Only switch setpoints when you have reached a safe operating depth for the P02 you are switching to CO8400 NiTek Q4 www DiveRite com N DIVE MODE b RITE DIVE SURFACE Mode Upon Surfacing From a Dive Once you surface from a dive the NiTek Q4 automatically switches to the SURFACE mode after 1 minute However if your surface inter 2 PM val is less than 10 minutes the NiTek Q4 will continue the dive and it 07 1 2 01 1 9 will be logged as a single dive DESAT SURF 00 03 00 01 In addition to the SURFACE mode information displayed as de scribed on page 7 new information is displayed on the SURFACE Se I mode screen following each completed dive FRESH l i O C 1 4 1 0232 n49 SURFACE Mode Screen Following A Dive e Desaturation Time e Surface Interval Time Oxygen Limit Index OLI Bar Graph e Pressure Gas in Tissue PGT Bar Graph This information is displayed on the screen until the NiTek Q4 calculates that it is no longer needed or after 24 hours have passed since the dive NOTE If you are making repetitive dives you need to pay close attention to your surface interval and use it in conjunc tion with the PLAN mode This will ensure that you stay within no decompression limits 1 Desaturation Time This is the amount of time expresse
21. ngee wrist mount Carrying case Screen protector Replacement USB cap o ring service kit Fischer connector cable CO8400 NiTek Q4 DIVE RITE www DiveRite com N USING THE NiTek Q4 DIVE RITE Battery and Charge Set up Your NiTek Q4 uses a rechargeable Lithium polymer battery that is sealed inside the housing You will need to check the battery level and fully charge the battery before the first use Battery Charge Indicator and afterwards as needed The best battery life will come from keeping the battery charged A full charge will last for PM approximately 20 hours of dive time depending on screen 0 7 1 2 06 e 1 9 brightness settings The battery will last for several years of normal use before gradually diminishing in capacity and can be replaced by Dive Rite or an authorized Dive Rite Dealer FRESH How To Check Battery Status O C 1 6 1 0 16 49 Press either the A or B button to bring the computer out of sleep mode The Home screen will display for a few seconds and then automatically advance to the SURFACE screen The icon showing the battery charge status is displayed just above the date If the battery shows a full charge you are ready to program your computer and make a dive If not you will need to charge it SURFACE Mode Screen Charging Your Battery The NiTek Q4 can be charged with either the included AC charger or from any USB connector To access the charging port use a coin and t
22. or 2 3 seconds to return to the Surface mode Setting for FRESH or SEA Salt Water Use Before going diving you will need to set your computer for the type of water you will be diving in either fresh or salt This allows for the most accurate calculations that determine your no decompression limits and decompression stops These calculations are based on One atmosphere of saltwater 33 feet 10 meters One atmosphere of freshwater 34 feet 10 3 meters To set for FRESH or SEA Water Use 1 Press the A button until SET is displayed 2 Press the B button to enter the dive set up option screen SET Screen One 3 Repeatedly press the A button until the screen scrolls through SET Screens One and Two changes to SET Screen Three and FRESH or SEA is flashing 4 Press the B button to toggle between the two 5 Press the A button to lock in your choice and advance to SET Screen Four To exit press and hold the A button for 2 3 seconds to return to the SURFACE mode SET Screen Four is where you will find and program the brightness of the text and numbers displayed on the screen Setting Brightness Control 1 Press the A button until SET is displayed 2 Press the B button to enter the dive set up option screen SET Screen One 3 Repeatedly press the A button until the screen scrolls through SET Screens One Two and Three and changes to SET Screen Four where the brightness number is flashing 4 Press
23. ories Available At Your Local Dive Rite Dealer Learn more about all the accessories available for your new NiTek Q4 dive computer at www diverite com or visit your local Dive Rite dealer ZE W Web Resource To find the nearest Dive Rite Dealer go to http www diverite com dealers CO8400 NiTek Q4 www DiveRite com B DIVE RITE 800 495 1046 www DiveRite com Copyright 2011 Lamartek Inc dba Dive Rite This manual is copyrighted by Lamartek Inc dba Dive Rite You may not reproduce translate transcribe or transmit any part of this manual without express written permission from Lamartek Inc dba Dive Rite
24. ose 19 Care anad Mantena DDDrr_eoe e e eee mavi 20 WY ie eal TI LOM uo DD_ e e e e r rp cc n mr HHP pz py MMP 7 F 7an 21 Accessories for Your NiTek sscssvinssesosassiessasoyansndenswitevnctuinensnstunsdoonsoixisnsvo evsnbesuantaiventssvennasinsbesormebaaatavatavesdvast 21 www DiveRite com be DIVE RITE PRODUCT INFORMATION Congratulations on your NiTek Q4 computer purchase Your NiTek Q4 has been designed manufactured and tested for the highest possible performance and reliability With proper use and maintenance outlined in this manual it will provide you with many years of outstanding service Web Resources As you read through the manual watch for pointers and helpful tips from the Dive Rite T pros To access our complete library interactive Solution Finder and helpful videos at Dive Rite TV go to www DiveRite com f For product updates and new product release notifications SIGN UP for the Dive Rite Newsletter and follow us on Facebook at http www facebook com DiveRiteTechGear Product Description This seven gas dive computer is for technical diving and provides information on depth dive times no decompres sion limits decompression obligations and nitrogen oxygen and helium absorption and elimination during all dive phases including ascent surface interval times and subsequent dives Using the well established Buhlmann ZLH16 al gorithm along
25. ot cover commercial or rental use nor does it extend to units purchased from other than an authorized Dive Rite dealer This warranty specifically excludes battery depletion or other conditions resulting from misuse negligence alteration accident or unauthorized repair To make a claim under the warranty the owner must have registered his her NiTek Q4 on our website at http www diverite com products service product registration All warranty repairs should be accompanied by a copy of the purchase receipt A Return Authorization RA can be obtained by calling Dive Rite at 800 495 1046 or e mail at Service DiveRite com Before shipping ensure that the NiTek Q4 is adequately packaged and protected Dive Rite is not responsible for any damage that may occur during shipping This warranty becomes void if NiTek Q4 components are damaged by anything other than normal recreational diving use or if they have been serviced or repaired by anyone other than authorized Dive Rite dealers Repairs made under the warranty will not extend the warranty period 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 No other person or representative is authorized to as sume for Dive Rite any other liability in connection with the sale of this product Access
26. p Symbol The DECO symbol displays indicating that you have to stop at the depth displayed 2 Required Stop Depth This is the required decompression stop depth 3 Required Stop Time This is the time in minutes you must remain at the indicated stop depth 4 Total Ascent Time This is the total amount of time in minutes you must spend at the decompression stops and the ascent time between decompression stops 5 PGT Bar Graph This visual indicator continues to monitor the calculated nitrogen in your body tissues during decompression A WARNING Decompression diving is considered to substantially increase your risk of decompression sickness DCS Second Underwater Screen While underwater you can change to the second DIVE mode screen that displays additional information When you switch screens the current depth conservatism gradient factor time of day temperature and strip compass are dis played 1 Dive Time This is the current time of day 2 Maximum Depth This is the maximum depth that you have reached on this dive CO8400 NiTek Q4 www DiveRite com PGT Bar N DIVE MODE gt RITE 3 Temperature This is the current water temperature 4 Strip Compass This is displayed in the lower portion of the DIVE T Min screen 15 26 000 37 MAX 72 F To Display the Second Underwater Diving Mode Screen 100 ft 1 Press and hold the B button 2 Release the B button to return to the primar
27. pling Rate option To exit press and hold the A button for 2 3 seconds to return to the Surface mode CO8400 NiTek Q4 www DiveRite com N MENUS gt RITE Setting the Dive Log Profile Sampling Rate The NiTek Q4 allows you to choose how frequently it samples and stores depth and time data These snapshots of your dive data are used in the LOG and PROFILE mode as well as when data is uploaded to a personal computer The Q4 can be programmed to sample your data every 15 seconds or every 30 seconds The 30 second sampling rate is the comput er s default setting The 15 second sampling rate provides a more detailed dive profile but because it stores more information fewer dives can be stored The 30 second sampling rate provides a less detailed dive profile but it is capable of storing more information for more dives NOTE When the computer s memory storage is full it overwrites the oldest dive profile data stored with the new infor mation 1 Press the A button until SET is displayed 2 Press the B button to enter the dive set up option screen SET Screen One 3 Repeatedly press the A button until the screen scrolls through SET Screens One and Two changes to SET Screen Three and Dive Profile Sampling Rate is flashing 4 Press the B button to toggle between 15 and 30 seconds 5 Press the A button to lock in your choice and advance to the FRESH or SEA calibration option To exit press and hold the A button f
28. rd r gg 6 How to Check The Charge STATUS sccsctincesdeccasisisesvsciectessexsusientasseuvtscustecassreaestsiinineieestbvdesbesteulaieinttesisin 6 hal o no Tour Bano kuc sm esilen N AA iw ewe berane baas en q aqas ewe ke eks k ne ke N ats 6 Using The NITEK Oreeson iirin a ONE _r e 6 Button Operation and Navigation e ssesssessesssesseeseessesseesseosseoseossesseesecoseeseeoseesseoseossesseesseoseesseoseesseose 6 OG E E T EE EA NT TA A TA T VETS E TEA 6 TGS VOCUS AE A A AN E E E EAE E PA A AAE E verteee cata entiat 7 Date and TIME acca crac cecasccxesncnsest eases R E e rrr AR 7 NEA CE LE e PAAA EASTA A A TE e e E E A A E S xoxoxnoj 8 Div Option SET MOO ass chester kuc delal n k A A E 8 SETE TONO EE AE EE E EEE EEE OA AAEE 8 Maximum Operating Depth MOD es sssesssesssessesssessscsseessessscsseesseesscossesseesscossesseesseosseeseesseesseeseess 8 Programming Gas MiX S s ssssssissssesssssssasssnsonsasseesercsessosvessssessssssestuvavasnsssessevisnv sssar svasses csasssssssisassass 8 Programming Se tDO T S yi 44 414445444 x ixxi04i a a k V s ek RE ANA WW o VAH A Vu H er u bebe A HA Mi 9 DE es Si 15 T Ll ll lc E danana ne a ay yek sla deya y k aweg er eee die ney eee reer se eke rere 9 Setting the Maximum Depth Alarm eesesssesesssssssssssssssesssssssssssssssessssssssessesesssesesseeseeseees 9 Setting the Maximum Time AlarM cccsesscssscssss
29. ss button A to lock the time and advance to the Maximum Time Alarm ON OFF indicator in the center right portion of the screen This will be flashing Press button B to toggle the alarm ON or OFF Press button A to lock your selection and advance to the Conservatism Gradient Factor option To exit press and hold the A button for 2 3 seconds to return to the Surface mode CO8400 NiTek Q4 www DiveRite com N DIVE MENUS Dom RITE SET Screen Three This SET screen allows you to choose one of three preset Conservatism Gradient Factors or set a custom gradient factor whether you wish your computer to display depth in feet or meters Imperial or Metric the sampling rate for the computer log and profile and whether the computer will calibrate for FRESH or SEA water Setting Your Conservatism Gradient Factor The NiTek Q4 uses the Buhlmann ZLH16 algorithm a default gradient factor GF of 30 75 and two additional pre set GF options as well as custom gradient factors that allow for deep stops or shallow stops 1 Press the A button until SET is displayed 2 Press the B button to enter the dive set up option screen SET Screen One 3 Repeatedly press the A button until the screen scrolls through SET Screens One and Two and changes to SET Screen Three CONS2 CONS1 CONSO or CONS GF will be flashing in the upper left portion of the screen SET Screen Three 4 Press the B button to toggle through the selec
30. sscsssssssscscssssssssescssssesesesesssseesescsssseseacseseeseseees 9 OE FC i EN J N DD rl r r rrg r Zr _www 10 Setting Your Conservatism Gradient FAactOl ssccsecesssessssssssesessssssesssessseesescsesseseseaceesseeeees 10 Setting For Metric or Imperial Operation s sssesseesssesseessessscsseessessecosersseesecossrsseesseossesseesseossee 10 Setting the Dive Setting Log Profile Sampling Rate ccesesssesesscsesessssescssessseseeeseseesesees 11 Setting for FRESH or SEA Water USe cccssssscsssesessesssesscsssessssesessesesssessesesesssscscsseseseseeseseseesesees 11 DET CI DET arene me me ner onan me ne De ayak hae kull el AE ee a raw een eee eee ee 11 Setting Brightness COTO ls sssecsansiansiussescrassoweiciacnscesseisesvonsaseseusinasuniavesussvesiueneanneentnvinennaeeandiniee 11 PEAN MOGO nae E E EEE E EE E 12 LOG MO Onr AT 12 PROFILE NOTE cinn E A EAE AAA O ANONO 13 PIMIENTA E E EAEE TEE ENA TE 13 aE o E EAE I E E A E OI O cc EA E O 14 COMPASS MOG Cernir a r ETE E ETOO EEO OOOO 15 DIVE MOO ara A E E EE EE E E AAE A OAE 15 Primary Underwater SCreen es sseesssessseessseessersssessseesseesscesssessseesseessseosseesseeoseeosseosseroserossresseesseroseeesseesseees 15 Second Underwater SCree n ssesseesseesseesseesseessseeseeesseesseesseesseesseesseesseesseesseesseesseessersseesseesseessseossesssesssessss 17 Changing Gas Mixes Underwate l csscssscscscssss
31. sssssssscscssssssssssesesessssssssesescsessssssssesesesesssseseeseaescsessesesesesees 17 Changing Setpoints UnderWwater esesssesssesssesseessecsssesseesseesseesseesseesseosscesseessessscosscosseoserosseossesseesseesseessersss 17 Surface Mode Upon Surfacing From A Dive c cssssssssssssesessesssssscsesessssescsseseseseesesesessessseseeseseseeseseseseeees 18 Desaturation LITE i ai lacnanenanakionyenlayeaeidl k lnan kalniri kanzaya yas k da eraka aaea ka ehda ake odawane dan 18 Surface Interval T TT i i s i4i4i3415ay544445ki wek n elde kN h Neb kerden n k H yed n e S AMANAN 18 Oxygen Limit Index OLI Bar Gran ycs esscinossessscussacersevstaretneeserinesurssiessstenemisenieaemartiieeines 18 Pressure Gas in Tissue PGT Bar Graph sessssesssessesseessesseesseossessesssesseeseesseoseesseossessesseesseeseessee 18 ARAE OPETI O ssie EA EAI EEE OANGIET 18 WARNINGS While in Dive MOde sssesssesssesssessseesseesseesseesseesseesseesseenseesseesssesseeossesssessseosseosseossessseossessseosse 19 Ascent Rate Warni O i i ni cn ucaninan kel runndksnlokyeni snlelnkaenes ean kas 4 n V NA EH 19 POZEI N bila eann E E OAE E O 19 OLI Oxygen Limit Index Warning sssessssessseesseesseesssessseesseessseosseesseeoseeosseosseeoseeosseesseessseesseess 19 Decompression Stop Violation Warning ss ssessesseesscsssessesssesseesseoseeseeoseosseosesssesseesecoseesee
32. tions e CONS2 30 75 default most conservative e CONS1 40 100 e CONSO 75 95 e CONS GF Custom gradient factor To Set Custom Gradient Factors a When CONS GF is flashing press the A button to select the first number b Press the B button to toggle through the values c Press the A button to select your value The computer will automatically advance to the second number d Press the B button to toggle through the values 5 Press the A button to lock in your choice and advance to the Imperial Metric option To exit press and hold the A button for 2 3 seconds to return to the Surface mode SET Screen Three ZON i Web Resource Learn about setting custom gradient factors in Dive RIte s library at 2 http www diverite com education library articles aS Setting the Computer for Metric or Imperial Operation The NiTek Q4 can calculate and give you values in Imperial units or Metric units When in Imperial depth values are ex pressed in feet When in Metric depth values are expressed in meters 1 Press the A button until SET is displayed 2 Press the B button to enter the dive set up option screen SET Screen One 3 Repeatedly press the A button until the screen scrolls through SET Screens One and Two changes to SET Screen Three and ft or m is flashing 4 Press the B button to toggle between ft feet and m meters 5 Press the A button to lock in your choice and advance to the Sam
33. ton to change the P02 to the desired value that you want to set or change Press the A button to lock in the setpoint and the computer will automatically advance to the 02 option To exit press and hold the A button for 2 3 seconds to return to the Surface mode DIVE T Min SET Screen Two Setting the Maximum Depth Alarm 1 2 Press the A button until SET is displayed Press the B button to enter the dive set up option screen SET Screen One Repeatedly press the A button until the screen changes to SET Screen Two and the maximum depth is flashing in the upper left portion of the screen Press button B to select the depth at which you want the alarm to activate Press button A lock the depth and advance to the Maximum Depth Alarm ON OFF indicator in the center left portion of the screen This will be flashing Press button B to toggle the alarm ON or OFF Press button A to lock your selection and advance to the Dive Time Alarm option To exit press and hold the A button for 2 3 seconds to return to the SURFACE mode Setting the Maximum Dive Time Alarm Press the A button until SET is displayed Press the B button to enter the dive set up option screen SET Screen One Repeatedly press the A button until the screen changes to SET Screen Two and the maximum dive time is flash ing in the upper right portion of the screen Press button B to set the time when you want the alarm to activate Pre
34. uch as age obesity dehydration cold or exertion which experts believe place divers at greater risk of DCS If these factors apply to you use the NiTek Q4 any other dive computer or dive tables with greater caution You should never dive with Nitrox EANx unless you have personally verified the oxygen percentage in your tanks and correctly entered the 02 into your dive computer Failing to verify the oxygen percentage or entering the wrong percentage could lead to serious injury or death You should never dive with Trimix unless you have personally verified the oxygen and helium percentage in your tanks and correctly entered the 02 and HE into your dive computer Failing to verify the oxygen and helium percentages or entering the wrong percentages could lead to serious injury or death gt gt You should never fly after diving until you verify that no measurable residual nitrogen remains after previous dives and the computer no longer displays the desaturation time indicator Flying during the no fly time can result in decompression sickness DCS gt CO8400 NiTek Q4 www DiveRite com CO8400 NiTek Q4 Table Of Contents be WARPING ee sectecsngs nonce tcoes eres esens A E E E E E EA EEE AE N E 2 Product DG SCE ION PN MAM D gt A O EEO EEO OOA 4 PPO AEAT EE E A E AN 4 SSC TNC ewel gt gt gt DKrDKeDrDrDYDYKirierrKryyyeeyeyeepe mmmnmmeNeNeNeNNNNNNNNnnnomn 5 53 5 E S A NN MD rrr o r r wrwrarar
35. urn the cap a quarter turn counter clockwise to align the groove on the battery cap with the groove on the computer case When this groove is aligned the battery cap is no longer sealed Plug the charger into an AC outlet or USB connection and then into the port on the computer The battery symbol is animated to indicate charging Periodically disconnect the charging cable and check the number of bars a solid battery symbol indicates a full charge Upon full charge reinsert the battery cap and using a coin turn the battery cap a quarter turn clockwise to seal Do not dive the computer unless the battery cap is sealed MAINTENANCE TIP To ensure your computer stays watertight it is important to inspect the USB plug o ring periodi cally Check for dirt and grit and clean off the o ring if anything is found Use of the correct o ring is critical to a proper seal Using the wrong o ring could allow the computer to flood Never replace the o ring with anything but one supplied by Dive Rite in a service kit Using The NiTek Q4 l BE Dive Rite Button Operation and Navigation NiTek Q4 Navigating the menus of the Q4 is intuitive the left A button and TUTE Too RST ae the right B button are used in the same way across all screens Full Trimix 13 8 Compass Rebreather B Press A to scroll CustomGF EJ Press B to select Press A to confirm the choice and advance to the A HOME Screen B next option Sleep Mode The computer automatically hibernates
36. with a countdown timer beginning at 24 hours Primary Underwater Screen Decompression Stop Violation Warning CO8400 NiTek Q4 www DiveRite com CARE amp MAINTENANCE gt RITE N Dive Checklist Before A Dive Check that the proper time and date are set If you are traveling your NiTek Q4 may still be set to your home time zone Ensure that you are in either the open circuit O C or closed circuit C C mode based on your upcoming dive plan Check that the proper mixes and modes are set Make sure that you review the dive planh mode for maximum depths and times for the mixes you will use During A Dive Monitor the NiTek Q4 throughout your dive for depth and time Monitor the Pressure Gas in Tissue PGT and Oxygen Limit Indicator OLI 02 loading bar graphs Follow the no decompression limits or complete the required decompression displayed After A Dive Monitor surface interval time if making another dive Follow desaturation and no fly guidelines Review your dive using the log mode and profile mode Download the dive log to your PC or MAC if you have the optional PC interface and software Care and Maintenance Proper Handling Techniques The NiTek Q4 is constructed to withstand the most demanding diving conditions It is however a high precision instru ment which requires proper care 1 2 Always rinse the computer with freshwater after use Store your NiTek Q4 in a cool dry location After d
37. with a default gradient factor of 30 75 the NiTek Q4 has two additional pre set GF settings to choose from and the option to set custom gradient factors that allow for deep stops or shallow stops Housed in a mil spec aluminum case with a mineral glass viewing port the OLED face provides an easy to read display for intuitive push button navigation The Q4 has an always on screen and comes with a number of modes including a power saving sleep mode SET mode PLAN mode DIVE mode LOG and PROFILE modes OXY mode PC mode for planning dives and mixes on either a PC or a MAC COMPASS mode and a TIME mode which includes the Date Includes Self donning ladder lock wrist strap USB Cable 120V US AC charger It is EXTREMELY IMPORTANT that you carefully read and understand this manual before diving your NiTek Q4 SUPPORT All Dive Rite products receive our commitment to excellence in customer service from your fellow divers Contact us with any questions at support diverite com or phone at 800 495 1046 Monday through Friday 9 AM 4 PM Eastern Standard Time CO8400 NiTek Q4 www DiveRite com TECH SPECS Specifications Algorithm Buhlmann ZH L16 Three pre set gradient factors 30 75 default 40 100 or 75 95 Optional custom gradient factor Sample tissues 16 Tissue half lives from 5 640 minutes Size and weight Length 3 5 8 9 cm Height 1 25 5 7 cm Thick 1 2 54 cm Weight 9 oz 255 g Display face Yellow O
38. x number that is displayed 0 PGT Bar Graph This is how much nitrogen the computer calculates your body has absorbed There are a maximum of 9 bars If all 9 bars are displayed it means that you are at or have exceeded the no decompression limit triggering a visual warning ae a VISUAL INDICATOR Pressure Gas in Tissue PGT Limit Indicator The PGT limit indicator alerts you to the fact that you are approaching or have approached the no decompression limit When 7 of the 9 bars are displayed the PGT graph flashes to indicate that you must ascend to a shallower depth to avert a decompression obligation If all nine bars are displayed the NiTek Q4 will change to the decompression mode When Diving Do not push the no decompression limits NDL s Make safety stops before ascending If you exceed the no decom pression limits check your breathing gas supply at all decompression stop depths The NiTek Q4 does not monitor breathing gas supply You must moni tor this yourself on every dive using a submersible pressure gauge or seg li equivalent device 21 Or 025 00 Min Min li 20 3 30ft I Decompression If you exceed the no decompression limits during a dive the computer enters EXT MIX the decompression mode This indicates that you will have to limit your as C C 1 2 1 0216 HE45 cent time and enter a series of one or more decompression stops Primary Underwater Screen Decompression Symbol 1 Deco Sto
39. y diving mode 1 6 screen Second Underwater Screen Changing Gas Mixes Underwater Because the NiTek Q4 has the ability to use up to 7 different gas mixes during a dive you need the ability to switch be tween these mix settings while underwater When you switch mix settings the P02 adjusts to reflect the current mixture you are breathing A The NiTek Q4 starts the dive on the last gas mix used or viewed in the SET mode not on MIX 1 Be sure to check and set your mix number before your dive A Only switch gas mixes when you have reached the safe operating depth limit for the gas to which you are switching To Change Gases Underwater 1 Press the A button The mix number will flash 2 Press the B button to select a mix number The 02 percentage will change to the programmed mix and the P02 indicator will change to reflect the P02 set for the selected mix NOTE Only the mix numbers that have been programmed with a gas mixture are available 3 Press the A button to lock in the mixture and return to the primary diving mode NOTE You cannot lock in a mix if it causes you to exceed a P02 of 1 4 or 1 6 atmospheres depending on which P02 you selected in the SET mode To Change Setpoints Underwater 1 Press and hold the A button for 2 3 seconds and the SP number flashes 2 Press the B button to scroll through the setpoint numbers The setpoint value changes to reflect the PO2 for the selected mix 3 Press the A button to
40. you have exceeded 1 4 or 1 6 atmos pheres for the gas you are breathing which can lead to severe injury or death If you exceed the P02 setting the P02 symbol and the P02 Primary Underwater Screen will flash Ascend to a shallower depth until the warning indicator P02 Limit Warning stops flashing 85 2 000 37 Min NDL 90 ft 12 FRESH OLI Oxygen Limit Index Warning The OLI warning accounts for the intensity and length of your ex posure to partial pressures of oxygen When seven of the OLI bars are displayed the OLI graph flashes as a warning to ascend to a shallower depth If you fail to heed this warning and all nine of the bars are displayed the graph continues to flash until you ascend to a shallower depth and the graph drops to seven bars Primary Underwater Screen XE l OLI Rate Warning Decompression Stop Violation Warning A decompression stop violation warning is triggered when you as cend to a shallower depth than the indicated stop depth or if you do not spend sufficient time at the required depth before ascend DIVET Min ing If you violate the decompression obligation the computer s DECO symbol will flash and continue to flash as long as you remain shallower than the indicated stop depth A 4 6 1 0221 If you do not correct an indicated deco stop violation the warning continues for several minutes after surfacing At this point the computer will display a Decompression Violation warning
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