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7

IST PROLINE

www.istsports.com

V.    Trouble shooting

The following list will help you make the proper diagnosis when you believe the 

product is working abnormally. Consult with your authorised IST dealer if any 

problems occur that are not on this list.

Problem

The DECO mark, the 

decompression stop depth 

and decompression stop time 

are blinking while at surface

- The product is damaged. Return to the closest IST 

authorised dealer for inpection. 

- When a measurement is taken outside the range.

- The dive computer will not work for 48 hours and 

then will recover automatically.

- There has been a decompression stop depth violation. 

If  it  has  been  less  than  10  minutes,  return  to  the 

indicated depth.

-  If  more  than  10  minutes  have  elapsed,  the  dive 

computer will not work for 48 hours and then will 

recover automatically.

Cause, prevention, response

Entire display is 

blinking while at surface.

The  altitude  rank  mark  is 

blinking while at an altitude 

that should allow usage.

- This can occur when you are close to the altitude  

measuring boundary. 

- This can occur under very hot conditions. Cool the 

unit down, such as by putting it in water.

- In other cases, this could indicate damage. Return to 

the closest IST authorised dealer for inpection. 

The  altitude  indicator  can 

not show a precise reading 

(i.e.  shifting  between  2 

different levels)

-  IST  may  perform  quality  control  at  the  time  of 

shipping and the data is left over from the test.

There is data in the Dive Log 

when the dive computer has 

not been used for a dive.

This is caused by tension of the lens from temperature 

change. It is not a problem.

LCD screen shows different 

colours.

- The display dims at low temperature. It will recover 

when the temperature returns to normal.

-  The  battery  could  be  low.  Have  the  closest  IST 

authorised dealer to change the battery.

Display is very dim.

- The water sensor sensor is still wet. Wipe with a dry, 

soft cloth.

- This occurs when there has been a Decompression 

Stop Direction Violation.

The  computer  does  not 

return to surface mode after 

diving.

Summary of Contents for GP-4000

Page 1: ...WWW ISTSPORTS COM DIVE COMPUTER GP 4000 COMPASS...

Page 2: ...TONS OF OPERATION 8 II 2 1 TIME MODE 9 II 2 2 COMPASS MODE 11 II 2 3 DIVE SET MODE 13 II 2 4 DIVE PLAN MODE 17 II 2 5 DIVE LOG MODE 18 II 2 6 PROFILE MODE 21 II 2 7 HISTORY MODE 22 II 2 8 PC TRANSFER...

Page 3: ...l data collected can be retrieved and saved in your personal computer by using IST PCI 3000 downloader available separately and GP 4000 COMPASS software available from www istsports com Other function...

Page 4: ...e else when repeated dives are planned I 1 HARDWARE SPECIFICATIONS MEASURABLE RANGE Dimension weight Case thickness 28mm 1 1 Case diameter 62mm 2 4 Total length incl straps 328mm 12 9 Wight 115g 4oz B...

Page 5: ...merial angle display Dive Set mode Variables such as FO2 settings up to 3 Mixes PO2 depth time alarms etc can be defined here Dive Plan mode Planned dive time and maximum depth can be set here Dive Lo...

Page 6: ...O P O2 DIVESET N2 O2 DIVEMODE DIVE DIVE MAX DIVE m N2 O2 P O2 1 AIR N2 O2 DEPTH ALARM DIVE m N2 O2 DIVETIME ALARM DIVE min DIVE T N2 O2 DEEPSTOP ON DIVE N2 O2 WATERIS SEA DIVE O2 PROFILE TIME DIVE N2...

Page 7: ...ROX FO FO SAFE DIVE m min N2 O2 NITROX DIVE T MAX C SAFE DIVE m min min N2 O2 NITROX NDL DIVE T P O2 SAFE m min N2 O2 DIVE T GAGE min O2 NITROX DIVE T SAFE O N DIVE SAFE DIVE m min N2 O2 NITROX NDL DI...

Page 8: ...e Main function 1 Once activated the dive computer automatically enters DIVE mode when depth is more than 1 2 m 2 Serve as contact points for PCI 3000 downloader to retrieve log and history informatio...

Page 9: ...of the week 3 Current time can be in either 12h or 24h clock mode 4 Current date 5 DIVE icon or GAGE icon The mode the computer will enter once activated Normal display Display after a dive DIVE 1 Don...

Page 10: ...the level of Nitrogen accumulated in the body by a nine level bar graph DIVE mode only OLI Oxygen Limited Indicator indicator if shown This indicates the level of Oxygen accumulated by a eight level...

Page 11: ...nd desaturation count down timer may not be turned off at the same time up to one minute difference Buttons of operation Button A EL back light is on for 4 seconds Move to Compass mode EL back light o...

Page 12: ...s axis press the C button for 2 seconds hold COMPASS parallel to the ground then rotate the unit very slowly clockwise until a full circle is indicated by the dot matrix display Press C for 2 further...

Page 13: ...will automatically be adjusted 3 FO2 setting up to 3 mixes Mix 1 has AIR as default and when a value other than 21 up to 99 is used the NITROX icon will appear DIVE mode in the same order as the comp...

Page 14: ...ax dive time alarm on off 1 2 N2 O2 DEEPSTOP ON DIVE 1 Deep Stop on off 1 O2 DIVETIME ALARM GAGE N2 min 1 2 1 Max dive time setting 1 1199 minutes 2 Max dive time alarm on off O2 WATERIS SEA GAGE N2 1...

Page 15: ...rded at the end of every 10th or 30th second 1 1 User Safety Factor level 0 1 or 2 When 0 is selected the algorithm for the current altitude is used while 1 means algorithm for the next higher altitud...

Page 16: ...ut values will return to the default setting after 13 hours of the last completed dive Always check the FO2 setting before a dive After using GAGE mode for diving the DIVE mode can not be chosen for 4...

Page 17: ...rements that is out of range If maximum planned dive depth setting exceeds the PO2 value setting the time display will show Check if the PO2 value setting needs to be adjusted in DIVE SET mode and als...

Page 18: ...eted to allow room for the latest information Depth profile shown in the dot matrix display Each time the curser moves represents a time interval of 30 seconds The maximum dive time for each dive is 5...

Page 19: ...th 2 Lowest temperature measured 3 Average depth 4 Log page icon 3rd page 3 1 2 4 DECO PO2 SLOW DIVE N2 O2 P 3 MAX m m AVE C Dive Log mode display GAGE mode 1st page Dive Log mode display GAGE mode 2n...

Page 20: ...g mode display warnings recorded 1 SLOW icon when ascent is too fast blinking 2 PO2 warning blinking 3 Decompression dive if warning then the icon blinks 4 OLI warning maximum level 8 5 Out of range t...

Page 21: ...there is an out of range measurement or Decompression Dive Violation Water sensor Very much like the previous mode Dive Log but the depth profile is played out in the dot matrix section of the screen...

Page 22: ...mode B C Move to Time mode after 2 minutes No input Move into DIVE GAGE mode Water sensor Summary of total dive time total dive number and max depth are displayed in DIVE or GAGE mode The upper limit...

Page 23: ...d in GAGE mode 2 Total no of dives recorded in GAGE mode 3 Maximum depth recorded in GAGE mode 1 3 2 Buttons of operation Button A No function Move to PC Transfer mode No function Function in History...

Page 24: ...es or there is no log data or if an access error has occurred In PC Transfer mode altitude level is temporarily not measured II 2 8 PC TRANSFER MODE N2 O2 Connection between the downloader and COMPASS...

Page 25: ...a dive II 2 9 TIME SET MODE N2 O2 TIMESET AM DIVE N2 O2 TIME FORMAT DIVE Buttons of operation Button A Set reset value To fast track a setting hold C Move to Time Set mode To move to the next variable...

Page 26: ...mpasses the following modes functions compass MIX change decompression dive mode safety stop condition deep stop condition gage mode out of measurement range condition Each of these functions is descr...

Page 27: ...VE T MAX C GAGE 1 2 1 FO2 currently in use 2 User safety level 1 1 Maximum depth reached min O2 NITROX DIVE T SAFE O N DIVE DIVE mode hold A button GAGE mode hold A button to switch to secondary displ...

Page 28: ...P STOP DIVE m m min N2 O2 NITROX DEEP 26M 56 P O2 min TOTAL DIVE mode Deep stop This dive computer has a DEEP STOP function It is shown only under the decompression mode and may require the diver to s...

Page 29: ...ommended safety stop time If the user descends below 9 9m upon returning to a depth of 6m this value appears instead of NDL The safety stop timer starts counting down from 3 minutes to 0 00 Then safet...

Page 30: ...otal ascent time has exceeded 99 minutes SAFE DIVE m min min N2 O2 NITROX NDL DIVE T P O2 OUTOF RANGE E g W a t e r depth exceedes measurement range deeper than 100m 328ft GAGE mode Only current depth...

Page 31: ...t This information is recorded in the dive log when the second warning appears within 6 seconds of the first warning This applies to both DIVE and GAGE mode SAFE m min N2 O2 DIVE T SLOW DIVE min NITRO...

Page 32: ...n the No Decompression Limit for safety reasons DECO DIVE m min min N2 O2 NITROX P O2 SAFE m TOTAL DECO STOP DIVE mode Warning Decompression stop violation When the depth is shallower than the recomme...

Page 33: ...2 When the partial pressure of oxygen warning comes on it can mean the PO2 at the current depth is greater that the maximum value set before a dive or PO2 is simply over 1 6 a When PO2 setting PO2 val...

Page 34: ...2 O2 WATER SETF02 AM DIVE NITROX Buttons of operation Button A Move to compass and back To mark specific depth hold C button Move between Dive Time and Depth Set compass initial orientation Move to se...

Page 35: ...e warranty NEVER activate the water detection sensor or expose it to moisture when on an airplane or in any other environment where air pressure can change quickly III 1 BATTERY When the battery mark...

Page 36: ...is can shorten the battery life Dry and wipe away any soiling or mineral deposits with a soft cloth Solvents such as alcohol and gasoline sprays such as cosmetics cleaning liquids adhesive and paints...

Page 37: ...s blinking while at an altitude that should allow usage This can occur when you are close to the altitude measuring boundary This can occur under very hot conditions Cool the unit down such as by putt...

Page 38: ...prevention response W h i l e n o t d i v i n g t h e computer goes into time mode and desaturation time is displayed Water detection sensores do not make the computer change mode This occurs when alt...

Page 39: ...O IS NOT TRAINED CERTIFIED THROUGH A RECOGNISED DIVE TRAINING AGENCY MAY LEAD TO INJURY OR EVEN DEATH This warranty does not cover any cosmetic damage rental commercial military use IST reserves the r...

Page 40: ...IST Sports Corp Room A 6th Floor No 6 345 Lane Yangkuang Street Neihu Taipei Taiwan Tel 886 2 26272516 Fax 886 2 26599056 www istsports com Ver 11 98...

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