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24

13. Dive Mode 

The IQ-800 will automatically enter dive mode when the E buttons 

come in contact with water.

No Decompression 

PGT graph

Depth

NDL

Description of functions during dive mode

The are several different displays and functions available in DIVE 

mode including: non-decompression dive mode, decompression dive 

mode, safety stop time, and out of measurement range condition. The 

functions of each mode are described below.

Non-decompression mode 

This is for a non-decompression (NDL) dive. (Fig. 22)

Decompression mode 

This is used for dives that last longer than 

the NDL’s.  The DECO icon warning will continue until the advised 

depths are reached.  If you ignore the DECO warning and go straight 

to the surface for longer than 10 minutes, the display will freeze and 

all calculations will stop.  The IQ-800 will switch automatically to TIME 

mode after 48 hours have elapsed.  This information is recorded in 

the dive log.  The IQ-800 can only switch to log, profile, or PC transfer 

mode while the calculations have stopped. (Fig. 23)

Figure 22

Содержание IQ-800

Страница 1: ... Time Mode 8 6 Dive Set Mode 10 7 Dive Plan Mode 12 8 Dive Log Mode 14 10 Dive Profile Mode 20 11 PC Transfer Mode 22 12 Time Set Mode 23 13 Dive Mode 24 14 Altitude Setting 35 15 Battery Level Icon 37 16 Battery Replacement 37 17 Units of Measurement 38 18 General Handling 38 19 Warranty 39 22 Technical Specifications 43 ...

Страница 2: ...sion depth Date safety stop time Residual nitrogen bar graph Don t fly icon Current time Total dive time current depth Sea Fresh water icon Mode button A Nitrox icon Mode log number Ascent rate indicator Ascent rate warning Low battery warning Altitude setting Set backlight button C FO2 NDL time dive time PO2 icon Residual Oxygen bar graph Current dive number Select button B Surface interval Safety...

Страница 3: ...co NDL Non Deco Demand Ascent rate warning PO2 limited warning OLI level warning Safety Stop Range OVER A Key or B Key or C Key EL ON 5s E Switch B Key invalid C Key 5 6s History Clear HISTORY MODE Non Residual Nitrogen Residual Nitrogen B Key B B B B Second Minute Hour 12h 24h B B B Year Month Day B Key A Key A Key A Key A Key TIME MODE Mode key Set key Select key B B SURF T DEPTH RANK FO2 USF SO...

Страница 4: ...2 Key Features Among the IQ 800 s key features Can handle both air and nitrox User changeable FO2 setting Visual audible and vibrating alarms Safety stop function Decompression and non decompression dive information Maximum depth alarm Dive time alarm Display backlight User changeable battery 3 Common Sense Warnings As is true of every piece of diving equipment including all dive computers the IQ ...

Страница 5: ...to 99 percent Although the IQ 800 is capable of calculating decompression stop requirements this ability is provided as a safety feature only should a diver accidentally exceed the No Decompression Limits NDLs Dives requiring mandatory stage decompression carry substantially greater risk than dives made well within no decompression limits Decompression diving is widely believed to entail substanti...

Страница 6: ...a mathematical 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 are assumed to absorb and release nitrogen from body tissues Thus the IQ 800 cannot compensate for factors such as age obesity dehydration cold or exertion which experts believe place divers at greater risk of DCI...

Страница 7: ... result you wish This manual will outline clearly which procedure to follow for each mode or task Throughout this manual display icons that blink are shown surrounded by gray bars Experts recommend divers wait at least 24 hours following any dive before flying in an aircraft or driving to altitude Failure to allow sufficient surface interval before doing so may substantially increase the risk of Dec...

Страница 8: ...iver s body with eight level indicators Nitrox Icon This Icon is ON when NITROX has been selected Desaturation time DESAT This indicates the time remaining until the body s internal nitrogen is desaturated The DESAT is also displayed if PGT occurs because of a change in the altitude rank Time mode is the IQ 800 s default mode In this mode the screen displays a minimum of the current date and time ...

Страница 9: ...le the computer calculates desaturation time this icon is displayed during Time Mode When the computer has finished calculating desaturation time this Icon is turned off Prior to a dive The letters correspond to the buttons of the IQ 800 shown in figure 1 A button Press this button to move to dive set mode A button held for 2 3 seconds Moves to time mode B button held down Time display and backlight...

Страница 10: ...e oxygen concentration that is currently selected If the FO2 is set at 21 Air is displayed PO2 Maximum depth This displays the PO2 maximum depth when PO2 1 4 appropriate for the displayed FO2 SF Safety Factor This displays the SF value set by the diver The larger the value the greater the safety value Alarm operations The icon will display V for vibrate or S for sound Nitrox Icon This Icon is ON w...

Страница 11: ...n the value will scroll rapidly in one percent increments The selected alarm will sound for one second when changing the warning setting The alarm test will not be performed if the battery is low E Touch this button and the metal housing to switch to dive mode The computer will enter time mode once the E button is released If no buttons are pushed for 2 to 3 minutes the computer will return to TIM...

Страница 12: ...during this mode Surface Time This displays the time currently elapsed since surfacing and the total surface time needed to return to the selected depth Depth This displays the desired depth NDL The no decompression limit for the selected depth based on surface time is displayed The maximum NDL that can be displayed is 200 minutes If the selected depth will result in a PO2 greater than 1 4 the dis...

Страница 13: ...ect either the surface time or depth setting Use the C button to change the value of the setting If the button is held in the value will scroll rapidly C Press this button to change either the surface time value or the depth value Ε When water is detected the computer moves to dive mode Auto return The display automatically returns to time mode when no buttons are used for 2 3 minutes NDL no decom...

Страница 14: ...the dive Dive end time is the time at the end of the dive Both Dive start time and Dive end time are displayed in 24 hour format PGT Pressure Gas in Tissue graph This represents the level of Nitrogen with nine level indicators at the end of the dive OLI Oxygen Limited Indicator graph This represents the level of the Oxygen Limit with eight level indicators at the end of the dive Altitude rank This...

Страница 15: ... 328 ft 99m the display is Ascent rate indicator This is the maximum ascent rate recorded during a dive Sea Fresh icon This indicates the water setting sea water fresh water Display 1 Dive number Log number Dive date Display 2 Ascent rate indicator No data Mode Mode Water temperature Maximum depth Fraction of oxygen Dive end time Dive start time Average depth Dive time Figure 7 Figure 8 Figure 9 ...

Страница 16: ...tion If a deco stop is violated the warning is stored in memory and the DECO icon blinks when the log is displayed Fig 11 Warning Displays These are warnings that can occur during a dive For further description of these warnings see the dive mode section Alarm Displays Ιf the following warnings occur during dive mode they are stored in memory and displayed SLOW icon blinks Figure 10 Figure 11 ...

Страница 17: ...e Fig 13 OLI Bar Icon Blinks Decompression dive warning If the dive enters decompression then the warning is stored and displayed during log mode Fig 14 Deco Icon comes on PO2 Icon Blinks PO2 warning The PO2 icon blinks if the warning was active during the dive Fig 12 Figure 12 Figure 13 Figure 14 ...

Страница 18: ...he log number 60 1 60 2 2 1 2 2 1 1 1 2 C Press and hold this button to change log number using fast scrolling Ε When water is detected the mode moves to dive mode Auto return The display automatically returns to time mode when no buttons are used for 2 3 minutes Out of Measurement Range warning If the computer entered out of range during the dive then the event is recorded in memory and the entir...

Страница 19: ...TORY mode from Time mode press the A button until the display says HIST To clear the entire history press and hold the C button for 5 to 6 seconds A confirmation sound will occur once the history is reset Maximum Water Depth Total Number of Dives Total Dive Time hours Total Dive Time minutes MODE MODE No Data Bars are shown and blink Figure 16 Figure 17 ...

Страница 20: ...e for further description of log data and profile data The logged data is described below Fig 18 10 Dive Profile Mode Dive date The date of the dive Dive time This is the dive time Log number This indicates the number of the currently displayed profile data among all of the currently recorded data entries Fraction of oxygen This shows the Mix value used while diving Sea Fresh Icon This indicates the ...

Страница 21: ... is being displayed Β Press this button to change log number 60 59 58 2 1 60 Β Press and hold this button to change log number using fast scrolling 60 59 58 2 1 60 C Press this button to move to PC transfer mode when there is no log and profile data it moves to time set mode But if surface time is less than 10 minutes the mode moves to time mode not PC transfer mode Ε When water is detected the mod...

Страница 22: ...his displays the current battery voltage Mode display This shows PC transfer mode Operation of buttons Α Press this button to move to time set mode Β No function C No function Ε No function Τhe transfer mode remains active for 14 15 minutes and then moves to time mode Α Press and hold this button for 1 2 seconds to move to time mode The computer switches to time mode when the transmission ends Nor...

Страница 23: ... Time set mode T SET Operation of buttons during Time set mode From the TIME mode press and release the A button several times until T SET is shown Α Press button to select mode Β Press this button to select the value to change C Press this button to change the value C Press and hold this button to change setting the value using fast scrolling Ε When water is detected the mode moves to dive mode A...

Страница 24: ...scribed below Non decompression mode This is for a non decompression NDL dive Fig 22 Decompression mode This is used for dives that last longer than the NDL s The DECO icon warning will continue until the advised depths are reached If you ignore the DECO warning and go straight to the surface for longer than 10 minutes the display will freeze and all calculations will stop The IQ 800 will switch a...

Страница 25: ...time is 0 The safety stop timer disappears and NDL appears in its place once the timer reaches zero The timer stops temporarily if the depth becomes equal to or more than 26 5 feet 8 1m during which time the counter stops temporarily and the NDL display appears again The timer is reset if the depth becomes equal to or more than 33 feet 10 m Fig 24 If the diver doesn t follow the safety stop inform...

Страница 26: ... the exceeded parameter becomes display and all of the displays blink The following situations will cause an Out of Measurement Range condition Case 1 The water depth exceeds 328 ft 99 9m Case 2 The dive time exceeds 599 minutes Case 3 Decompression is required at a decompression stop depth greater than 30 meters 100 feet Case 4 Decompression stop time has exceeded 99 minutes Case 5 Total ascent t...

Страница 27: ...pth of 5 ft or less The maximum dive time displayed is 599 minutes Pressure of oxygen PO2 This indicates the PO2 value at the current depth This value is calculated based on fraction of oxygen and the current depth Ν2 Pressure Gas in Tissue graph This indicates the level of Nitrogen using up to nine level indicators The greater the number of indicators displayed the greater the pressure of gas in ...

Страница 28: ...alculated according to the dive conditions and then displayed 10 320 ft 3 99m Decompression stop time DECO STOP TIME This is the amount of time to be spent at a decompression stop depth A countdown timer is shown during decompression Total ascent time TOTAL This indicates the total amount of time required for ascent from the current depth to the surface assuming that all decompression stops are ma...

Страница 29: ...tting FO2 value and the back light is on from 4 5 seconds C Back light is on from 4 5 seconds Once the diver is less than a depth of 5 ft and after 10 minutes the IQ 800 moves to Decompression stop violation lock if a violation occurred during the dive The computer can t be used for 48 hours The mode will be automatically switched to time mode after 48 hours have elapsed Decompression dive warning...

Страница 30: ...the log The ascent rate bar graph will show 7 or more indicators Fig 27 The following warning screens may appear during a dive If a warning appears the diver should take immediate action to correct the warning NDL warning If the NDL decreases to less than 3 minutes the diver is alerted by the NDL icon and the NDL time blinking for 6 seconds The sound or warning vibration will operate for three sec...

Страница 31: ...on stop violation warning The DECO information and the DECO icon will blink continuously The warning will operate twice for three seconds PO2 warning The PO2 warning has two levels Fig 30 a PO2 equals 1 4 or 1 5 The current depth PO2 icon PO2 value and PO2 indicator blinks for 15 seconds b PO2 equals 1 6 or more The current depth PO2 icon PO2 indicator and OLI bar graph 8 indictors blinks continuo...

Страница 32: ...ecorded in the dive log The warning sound or vibration will operate twice for three seconds each time the warning is active OLI warning Decompression dive warning If the NDL is 0 and a decompression dive is entered the diver is alerted with a warning followed by the decompression information display Once the dive becomes a deco dive the PGT bar graph DECO icon and DECO indicator blink for 15 secon...

Страница 33: ... this warning mode all of the display segments will blink as shown below The sound or vibrating alarm will operate twice for three seconds The warning is recorded in the log Fig 33 WARNING An IQ 800 displaying an Out of Range warning is incapable of displaying other critical information such as depth time ascent rate PO2 OLI and deco stop violations and required decompression stops You should not ...

Страница 34: ... The diver is alerted to the start of the safety stop by a blinking stop icon and SAFE indicator If the safety stop has started and the depth becomes less than 5 feet 1 4m the remaining stop time will also blink The warning is not recorded in the log Fig 34 Figure 34 ...

Страница 35: ...s to a lower level under 19680 feet 6000 meters The calculations of PGT OLI and desaturation time are stopped when altitude is over 19680 feet 6000 meters and Err is displayed however surface time continues to be counted When the altitude is less than 19680 feet 6000 meters the display shown before reaching that altitude is displayed again The same displays and processing occur if the altitude can...

Страница 36: ...8 bars a change in the altitude rank may cause the ninth level indicator to appear To prevent this never use the dive computer when going to high altitude locations since it will disable dive mode as a safety precaution Normal function of the dive computer will be restored when PGT graph drops to 8 bars or less A difference of one minute may occur between when the PGT graph is turned off and when ...

Страница 37: ...film of silicone grease before replacing it Screw the cover back in place in the direction indicated on the cover Do not over tighten Please note that the warranty does not cover damage to the computer due to improper battery replacement 15 Battery Level Icon Battery level readings BLD are performed in all modes with the exception of dive mode and PC transfer mode There are two BLD levels If the vo...

Страница 38: ...olate the warranty If the IQ 800 does not appear to be functioning properly in any manner do not use it to dive Return it to your authorized TUSA dealer for repair Rinse the IQ 800 thoroughly in fresh water following every dive Do not use cleansers chemicals or solvents to clean the IQ 800 Use a soft cloth to gently wipe dirt or water stains from the screen Store the IQ 800 in a clean dry location...

Страница 39: ...eipt as proof of purchase This limited warranty applies only to the original purchaser and is not transferable TUSA makes no warranty or representation regarding the performance of any products used in conjunction with TUSA s products This Limited warranty applies only to dive computers sold through authorized TUSA Scuba dealers This limited warranty shall be void if the computer has been misused ...

Страница 40: ...ot apply to you Tusa expressly limits any and all dive computer warranties expressed or implied to the two year term as set forth above All remedies are waived unless claim is made within the applicable twenty four 24 month period Your remedies are limited to those contained therein and are in lieu of all other remedies whether based on breach of warranty or contract negligence strict product liab...

Страница 41: ...o out of measurement range 1 Depth exceeds 330 ft 99 9m 2 Dive time exceeds 599 minutes 3 Deco stop depth exceeds 99ft 30m 4 Deco stop time exceeds 99 minutes 5 Total ascent time exceeds 99 minutes OLI warning 1 OLI increases to 7 2 OLI is 8 PO2 warning 1 PO2 increases to 1 4 2 PO2 is 1 6 NDL warning When NDL is less than 3 minutes Alarm sounds for 3 seconds Vibration is active for 3 seconds Safet...

Страница 42: ...he E button is no longer active 21 Air default function The FO2 setting will return to AIR after 12 to 13 hours unless the computer is in a dive or a lock mode Once in a lock condition the computer will remain that way for 48 hours After the lock condition has passed the FO2 is set to AIR If a dive is recorded in the log with a time of 3 minutes or more the FO2 will return to AIR after 10 minutes ...

Страница 43: ...re 23 104 F 5 40 Measurement interval 1 minute during dive mode 3 Operating temperature Operating temperature 23 104 F 5 40 At cold temperature the display will be somewhat dim 4 NITROX setting FO2 21 99 setting step 1 5 waterproof range The waterproof range to 328ft 99 9m 6 Battery life Battery life about 2 5 years uses one CR2032 battery under conditions as follows The computer is used for 50 on...

Страница 44: ...44 Date Purchased IQ 800 Serial Number Dealer City State Zip Code Address Owners Information ...

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