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Seac JACK, User Manual

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Seac JACK User Manual Download Page 37

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37

English

Weather Forecast

The weather forecast is based on monitoring atmospheric pressure in the 

previous 18 hours using the built-in barometer. For a reliable weather forecast, 

no changes in elevation should be made. Otherwise the change in atmospheric 

pressure due to the change in altitude could introduce inaccuracies into the 

weather forecast.

m 

WARNING!

After the dive, because of humidity in the sensor area, the pressure actually 

read could be lower than the true pressure, which could compromise the 

correct weather forecast.

Following a change in altitude of ~ 50 m, the weather forecast will be reliable 

again after 3-5 hours.

stabile

in peggioramento

in miglioramento

Weather stable at current conditions 

Possible deterioration

Possible improvement

JACK 

unlocked

App / exit

Summary of Contents for JACK

Page 1: ...1 English User Manual Ver 1 0 Made in Italy JACK Dive computer ...

Page 2: ...2 English ...

Page 3: ...24 DIVE SET 2 Dive settings 2 26 FREE SET Freedive Settings 27 FREE ALARM Freedive Warning 29 MIX Dive Mix Settings 31 PLANNER within no deco limits 32 PLANNER deco planner 33 LOGBOOK 34 ALARM Open Circuit Alarms 35 The Compass 36 Weather Forecast 37 Altimeter Barometer Thermometer 38 Apps for JACK Free 39 JACK DURING THE DIVE 40 Freediving 40 Reducing the risk of Oedema Hemoptysis 41 Reducing the...

Page 4: ...WARNING Read the user manual fully before using the SEAC computer Using the computer incorrectly will void the warranty and can permanently damage the computer m WARNING Only use the dive computer after you have read all sections of the instruction manual and you have understood how it works m WARNING The dive computer is not a substitute for diver training and should only be used by divers who ha...

Page 5: ...ir own device on their wrist to provide information and store data exclusively for the wearer m WARNING Do not dive with a computer that does not have records of recent previous dives since its calculations cannot account for data that it has not stored m WARNING For safety reasons it is NOT possible to set FREE mode as the main mode unless 12 hours have elapsed since the most recent SCUBA or GAUG...

Page 6: ...rbaric medicine the occurrence of decompression sickness on board a plane cannot be excluded after dives Dives with Nitrox mixtures When setting the gas fraction in the tank the computer will only accept whole numbers so in the case of a verified gas fraction of 32 8 the next lower whole number must be set and thus 32 in this case Do not round up to the next higher number because this would undere...

Page 7: ...t expose the computer to direct sunlight or sources of heat higher than 50 C Store the computer in a cool 5 C 25 C and dry place Do not place the computer in a hyperbaric chamber The computer is designed for reading precision of 2 European standards require precision levels of 3 5 European standards require that the unit be checked periodically to monitor the precision of its depth and time readin...

Page 8: ...the wrist temperature detection out of the water is affected by body heat For an accurate temperature reading immerse the device in water or leave the device away from any sources of heat for a few minutes Certification The computer s hardware has obtained EC and EN13319 certifications Software Algorithm The computer uses the Bühlmann ZHL 16B model for scuba dives Freedive algorithm The computer u...

Page 9: ... stop Yes Last deco stop personalization Yes Planner No Deco Limit DECO PLANNER SEAC JACK Backlighting SuperBright LEDs Backlighting activation mode Standard timer Manual on off Always on in the water Display 100 dot matrix 80x80 pixel Ring nut material Stainless steel Case High strength technopolymer Lens Mineral Extension strap Included Battery Rechargeable Li ion with USB 40 hours dive time 2 3...

Page 10: ...e is 3 5 hours depending on the residual charge level m WARNING Never dive if the computer shows a charge of 30 or less When you connect the USB charging cable within 45 seconds the charging symbol will appear on the watch screen Charging is complete when the battery symbol disappears from the watch screen and sleep mode activates Once the battery has charged even if the device is left connected t...

Page 11: ...sing the computer s burn time If you dive in especially cold water the battery voltage can run out much faster than normal Therefore it s always a good idea to recharge the battery before diving in extreme conditions m WARNING In the case of dives in especially cold water 3 C recharge the computer to 100 or ensure that you have at least a 50 charge m WARNING Dives in especially cold water 3 C requ...

Page 12: ...will turn off its screen automatically to save battery All the functions of the computer continue to function normally alarm desaturation when needed time etc Thanks to the built in accelerometer the screen will turn on automatically as soon as the computer detects any vibration or movement no button need be pressed to turn on the screen Sleep mode can be deactivated not recommended from the DISPL...

Page 13: ...s of inactivity in watch mode the computer automatically activates lock mode Push any button to unlock JACK The computer is unlocked when the battery is shown below the time screen Lock screen JACK unlocked Unlock Backlighting Unlock Compass and App Unlock Dive mode Unlock Watch mode menu ...

Page 14: ...00 0 0 0 0 0 GAUGE DIVE m min DEPTH 0 0 0 00 0 0 0 0 0 FREE DIVE m sec DEPTH B C D B B C C D D B C D C C C D D D 12 30 01 01 Th 95 14 English JACK menu structure Start here Compass and Outdoor App UP exit Up Up Exit Exit Down Down Down Select Select Select Watch Watch Menu Dive menu Dive menu Watch Menu Scuba mode Gauge mode Freedive mode Back to watch Activate backlight only function of this butt...

Page 15: ...is pressed for 60 seconds Watch mode displays the following Large in the center Time in 24 hr or 12 hr format the date format can be set from the SYS SET menu Small in the center battery m WARNING Do not dive if the battery charge is lower than 30 At lower left date in dd mm format the date format can be changed to mm dd in the DIVE SET 1 menu by selecting the Imperial system At lower right Day of...

Page 16: ...any button and press button C from the watch screen Press buttons B and D to scroll through the menu items and press C to select the desired option Keep pressing D to display the second menu page To exit the menu select the symbol or simply don t press any buttons for 60 seconds Watch Watch Menu Up Exit Down Select Activate backlight only function of this button JACK unlocked Start here Watch Menu...

Page 17: ... is managed manually one press to activate and one to deactivate DIVE Backlighting activates automatically and remains active throughout the entire dive When not diving it uses the AUTO settings m WARNING In the watch screen regardless of the BKL MODE and BKL TIME settings backlighting is deactivated after 3 seconds CONTRAST 0 7 Sets the intensity of the font contrast m WARNING Setting a very high...

Page 18: ...be changed from the SYS SET Menu UTC Coordinated Universal Time Adjusts the first home time zone UTC 2 Coordinated Universal Time Adjusts the second time zone Set UTC and UTC 2 with two different values to display double time zones on the JACK watch screen Set the same UTC value to display a single time TIME Sets the time 24hr format FORMAT Sets the time format displayed 24hr or 12 hr To exit sele...

Page 19: ...quired to download the program and download updates m WARNING DiveLogger and updates are completely free However you will need an internet connection in order to download the software If you use a metered connection your internet service provider could charge you for the data traffic generated We always recommend an ADSL Flat connection for accessing the Internet Contact your Internet provider for...

Page 20: ... set the DECLIN value leave it at 0 0 DIR EAST or WEST The direction is used to indicate the direction of the declination of earth s magnetic field If you don t know how to set the DIR value leave it set to EAST CALIB Calibration Press B or D to start calibrating the compass To calibrate correctly stay away from sources of magnetic fields computers televisions light poles etc Rotate on a flat surf...

Page 21: ...EASON if the device is being used by the same person This prevents JACK from running the correct decompression calculation EXECUTE Resets all items set to YES Select the EXECUTE function and press the C button to run the reset m WARNING DANGER Do NOT perform the tissue saturation reset TISSUES YES if the device will be used by the same person This can lead to the risk of accidents including fatal ...

Page 22: ...11 Made in Italy C C C D 22 English INFO The INFO Menu shows the information about the JACK unit Full model name SEAC JACK Y N Unit serial number APOS Version of the operating system installed on the unit To exit select C or wait at least 120 seconds without pressing any buttons JACK unlocked Exit ...

Page 23: ...essing any button and from the watch screen press the D button to access the dive screen Then press the C button to access the dive menu Press the B and D buttons to scroll through the menu items and press the C button to select the desired option Keep pressing D to display the second menu page To exit the menu select the symbol or simply don t press any buttons for 60 seconds UP Down Select Dive ...

Page 24: ...date format mm dd yy MODE Set the preferred dive type that JACK will activate upon entering the water m WARNING Always check that the dive type matches the dive actually being taken SCUBA JACK begins a dive in scuba mode with tanks GAUGE JACK begins a dive in gauge mode FREE JACK begins a dive in freedive mode NOTE If you should wish to use a different mode without changing the MODE parameter you ...

Page 25: ...L 16 B gradients GFL GFH 0 93 93 1 90 90 standard conservatism 2 80 80 3 75 75 4 30 90 max linear conservatism 5 20 89 NOTE Higher conservatism will ensure that the computer will perform calculations more cautiously decreasing the time that can pass between a given depth without exiting the safety curve or by extending the decompression time in the case of dives with deco stops In general it is a ...

Page 26: ...st decompression stop only if the dive is outside the no deco limit and requires deco stops DECO CTRL ON OFF If enabled ON JACK will not permit any new dives in the 12 hours following a dive in which any significant deco violations occurred Disabling OFF the DECO CTRL is not recommended and will be permanently recorded in the JACK Logbook m WARNING The Safety Stop is considered a NON obligatory st...

Page 27: ...vatism taking into account your own athletic condition T PROF Type of dive AUTO V U Indicates the type of dive you intend to take to make it possible to optimize the Taravana risk reduction algorithm V V Form Dive with brief bottom time and body in constant motion typical of recreational freedivers U U Form Dive with extended bottom time and body immobile typical of freediving fishermen AUTO Autom...

Page 28: ...T 28 English OEDEMA Pulmonary Oedema Depth you intend to reach or the comfort depth depth reachable without special effort based on which the computer will calculate the preparatory dives required to reduce to a minimum the risk of pulmonary oedema If 0 disabled If the OEDEMA function is active the first three warm up dives are not considered in calculating the session average For more information...

Page 29: ...e preset threshold during the ascent only BOTH Alarm activation at the preset threshold in both descent and ascent DESC allarme solo in discesa ASC allarme solo in risalita BOTH allarme sia in discesa che in risalita DESC allarme solo in discesa ASC allarme solo in risalita BOTH allarme sia in discesa che in risalita DESC allarme solo in discesa ASC allarme solo in risalita BOTH allarme sia in dis...

Page 30: ...ters or feet if the Imperial system is set the alarm will be activated Example START 10 STEP 5 Alarm 1 10 m Alarm 2 15 m Alarm 3 20 m Alarm 4 25 m etc In STEP mode the alarm is only activated during the descent TIME An additional auditory alarm is activated upon reaching the time set mm ss if 0 00 time alarm deactivated If TYPE TIME An auditory alarm is activated when the set time is reached mm ss...

Page 31: ...ith enriched breathing mixes Do not dive using breathing mixes other than those set in your diving computer Using mixes other than those set makes it impossible to calculate the decompression correctly MIX 21 50 Indicates the oxygen in the mix inside the tank PPO2 Oxygen partial pressure 1 20 1 60 Indicates the maximum PPO2 with which you intend to use the mix MOD Maximum operating depth for the m...

Page 32: ...e maximum planned depth for the dive TIME Enter the bottom time for the dive in minutes EVALUATE Launch the dive simulation select with C and press D If the dive is within the no decompression limits no deco stops required NDL No decompression time left after the bottom time set CNS of accumulated CNS after the bottom time set OTU of OTU accumulated after the bottom time set MIX QT Mix volume in l...

Page 33: ...hown will always be the information about the end of the bottom time in the example at left 35 25 25 21 0 m WARNING Press B and D to scroll through the pages if there are more than 3 deco stops m WARNING The planner assumes 18 m min as the descent rate and 9 m min for ascent rate in decompression calculations m WARNING The Planner function does not run the validation of the profile that is it does...

Page 34: ...e sample rate 10 seconds The data saved in JACK s Logbook can be downloaded to a Mac or PC using the USB cable included in the package and the DiveLogger software which can be downloaded from www seacsub com see the dedicated chapter JACK unlocked Previous log Previous log Log number Log number Date Date Graphic profile Graphic profile Maximum depth Maximum depth Mix used Dive type CNS Surface tim...

Page 35: ...that signals an excessive ascent rate MAX DEPTH YES NO Alarm that signals that the MOD has been exceeded depth beyond which you should not proceed based on the PPO2 of the breathing mix in use DECO VIOL YES NO Alarm that signals a violation of the mandatory decompression stop The Safety Stops and Deep Stops are not considered mandatory decompression stops Violating Safety Stops or Deep Stops does ...

Page 36: ...rotating your arm it may take a few seconds for the compass to find the correct alignment again To set the route press the D button While navigating JACK considers the direction to be on route if the desired route diverges no more than 5 from the direction set To exit the compass press the B button twice Direction in degrees highlighted in black Direction on route 5 with respect to the value set w...

Page 37: ...spheric pressure due to the change in altitude could introduce inaccuracies into the weather forecast m WARNING After the dive because of humidity in the sensor area the pressure actually read could be lower than the true pressure which could compromise the correct weather forecast Following a change in altitude of 50 m the weather forecast will be reliable again after 3 5 hours stabile in peggior...

Page 38: ...ed by JACK is the temperature of the watch case itself Therefore when worn on your wrist it will measure a temperature higher than the outside temperature To measure the ambient temperature remove the watch from your wrist and wait at least 5 6 minutes The temperature reading will be accurate in the water after 3 4 minutes Barometer At lower right expressed in millibars Indicates the atmospheric p...

Page 39: ...RM Exit B B C C D D B 39 English Apps for JACK Free JACK has some applications installed To access them press the B button after you have navigated to the compass screen Select Exit to leave the App menu or press the B button with the first available app selected JACK unlocked UP exit UP exit Down Down Select Select ...

Page 40: ...ode to be activated in the DIVE SET 1 menu Freediving The following diagram shows the information shown during freedives Last dive graphic profile Current depth Current depth Activate backlighting Run time Last dive run time Number of dives Number of dives taken Current speed descent or ascent Current speed descent or ascent Maximum depth reached in the last dive Maximum depth reached in the last ...

Page 41: ...ally caused by a rupture of capillaries in the lungs that have been subjected to too much stress without having first performed the appropriate warmups To reduce the risk of pulmonary oedema JACK recommends which dives to take first in order to warm up the capillaries in the lungs depending on the depth you want to reach or the comfort depth depth you can reach without special effort To activate t...

Page 42: ... Taravana are Lengthy stays at very deep levels with repeated dives over time 2 4 hour sessions Exposure to deep levels without adequate recovery time on the surface Hypoxia Insufficient oxygen in the body Dehydration Taking into consideration all the possible causes that can trigger the syndrome after every dive JACK suggests the minimum Recovery time RECOVERY before beginning the next dive to re...

Page 43: ... and the depths reached the computer will display the HYDRATE alert to remind the freediver to hydrate even when the body has not yet noticed the need There is no need to press any button after having rehydrated The alert will be removed automatically by the next dive Warning We counsel strongly against ignoring the hydration warning Hydration alarm ...

Page 44: ... Run time at right Dive time in minutes seconds Dive mode at upper right OC Open Circuit If within limits NDL No Decompression Limit Time in minutes it s possible to stay at the current level without exceeding the no decompression limits and make mandatory deco stops necessary As a general rule of thumb it s always a good idea to remain within the no decompression limits If you exceed the limits T...

Page 45: ...end in the safety stop STOP Center Depth of the stop NDL Right No Decompression Limit If the Deep Stop is enabled If you set the Deep Stop function it will be displayed 5 m before the actual depth required in the central line on the display and will be removed if not performed 5 m after the depth required If the Deep Stop is performed during a dive within the no decompression limits the NDL time w...

Page 46: ... button or wait a few seconds Oxygen at left Oxygen Percentage in the mix that JACK is using for the decompression calculation Ascent speed in the center Speed in real time in meters minute or feet minute Maximum Depth at right Maximum depth reached during the dive Oxygen at left Oxygen Percentage in the mix that JACK is using for the decompression calculation Oxygen Partial Pressure at center The...

Page 47: ...lgorithm conservativism level at left Level of conservativism applied to the decompression algorithm CNS at center of CNS accumulated up to that point Maximum Depth at right Maximum depth reached during the dive Graphic profile at center Real time dive profile Standard Time at lower right standard time expressed in hh mm ...

Page 48: ...mer to AVG Depth average depth AVG Depth at center Average depth resettable by pressing the C button Temperature at lower left Current temperature Ascent rate at center bottom Current ascent rate in m min or ft min Maximum depth at lower right Maximum dive depth JACK also calculates tissue saturation and desaturation in GAUGE mode using an imaginary MIX with a high content of inert gases 10 60 rec...

Page 49: ...considers the direction to be on route if the desired route diverges no more than 5 from the direction set The current depth is shown on the lower right The current temperature is on the lower left To exit the compass press the B button twice Direction in degrees highlighted in black Direction on route 5 with respect to the value set with D Direction in degrees not highlighted Indicates which dire...

Page 50: ...s during the dive The applications on JACK can be used both during freedive sessions and during open circuit or gauge dives To access them press the B button after you have navigated to the compass screen Select Exit to leave the App menu or press the B button with the first available app selected JACK unlocked UP exit UP exit Down Down Select Select ...

Page 51: ...t a minimum interval of 18 hours For dives that required mandatory deco stops wait a minimum interval of 24 hours m WARNING These instructions can change on the basis of new studies and research It s possible that this information may have become obsolete when you read this manual Always refer to your training or a hyperbaric doctor about the minimum interval before exposing yourself to changes in...

Page 52: ...EPTH 52 English Desaturation information Once 10 minutes have elapsed after the last dive with scuba equipment open circuit or gauge the desaturation data can be shown on the watch screen by pressing the D button Desat Desaturation time remaining hh mm NO FLY Time remaining until deactivation of the No Fly alarm Surf time Surface time elapsed since the end of the dive JACK unlocked ...

Page 53: ... the JACK Press the B button to access the compass screen and press the B button again to access the App menu Press the B C and D buttons as shown in the figure to navigate around the menu To exit the App Menu quickly press the B button after selecting the first app available in the list or select EXIT Lock screen JACK unlocked Unlock Backlighting Unlock Compass Unlock Unlock App Up Down Select ...

Page 54: ...LAST LAP Lap time since the last time the stopwatch was launched To completely reset the CHRONO App you need to stop the time C and press D MOON Phases of the Moon Press the B C and D buttons as shown in the figure to use the app The legend for the phases of the moon is shown at the top of the screen The actual phase is shown large in the middle The new moon is shown as a completely black circle w...

Page 55: ... accurate as possible walk or run at a consistent rate enter your Height and Weight selecting the value you want to change with the C button and set the correct number using the B and D buttons Use this same method to set the sensitivity of the pedometer SENSE to adapt its detection to your running style the type of terrain on which you run and the kind of shoes you wear Step counter readings are ...

Page 56: ...at center bottom ON JACK issues an audible alarm each day at the time set OFF No alarm set If the ALARM CLOCK is set to ON the alarm icon will be shown on the right of the watch screen and the JACK lock screen When the alarm sound plays press any key to silence it If the CLOCK ALARM App is not subsequently turned OFF the alarm will sound automatically the next day at the same time Next value Stop ...

Page 57: ...sion of the software The JACK must be connected to a Mac or PC using the USB cable to run the updates m WARNING During the update a new version of the operating system will be installed After every update Check that JACK s settings mix algorithms deco stops etc are set correctly for your next dive The compass must be recalibrated After every update JACK runs a reset to default for the tissue setti...

Page 58: ...sistance and free repair in the shortest possible time or to a full free replacement of the product at the sole discretion of SEAC or parts of it whenever a malfunctioning defect specifically described in item 3 above is acknowledged by SEAC 6 This warranty may also be exercised by shipping the product believed to be defective to SEAC The authorized intermediary for this operation must be the SEAC...

Page 59: ...e device Pressure testing out of the water Accidents while diving Use other than that intended for the product or other than that indicated in the instruction manual The warranty does not cover depletion of batteries Repairs or replacements made during the warranty period do not imply any right to an extension of the warranty itself m WARNING DO NOT UNSCREW THE SCREWS on the computer this voids th...

Page 60: ...60 English 2017 Unauthorized reproduction prohibited in whole or in part SEACSUB S p A ...

Page 61: ...61 English NOTES ...

Page 62: ...62 English NOTES ...

Page 63: ...63 English NOTES ...

Page 64: ... Italy Tel 39 0185356301 Fax 39 0185356300 e mail seacsub seacsub com www seacsub com Seac USA Corp 7925 NW 12th Street Suite 229 Miami FL 33126 United States Tel 1 786 580 3695 e mail seac usa seacsub com www seacsub com MADE IN ITALY 1630001000000A 01 17 Artbook 13156 16 ...

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