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Operations Manual Perdix

Manual DocRev B

This manual provides operating instructions for the Perdix and Perdix AI .

Some features presented in this manual only apply to the Perdix AI . These
items are clearly identified with a (Perdix AI only) note .

Detailed descriptions of AI features can be found in the

PERDIX AI

Operating Instructions manual .

MODELS COVERED BY THIS MANUAL

This manual provides operating instructions for the Perdix in the following
technical operating modes:

- Open Circuit Technical (OC Tec)
- Closed Circuit / Bail Out (CC/BO)
- Gauge

The Shearwater Perdix also has an Open Circuit Recreational mode (OC
Rec) . For detailed instructions on OC Rec mode operation, please see the
Shearwater Perdix

Recreational Nitrox Mode Manual

MODES COVERED BY THIS MANUAL

Summary of Contents for Perdix

Page 1: ...OPERATING INSTRUCTION MANUAL Powerful Simple Reliable...

Page 2: ...CREENS 23 COMPASS 29 AIR INTEGRATION 32 SIMPLE EXAMPLE DIVE 34 COMPLEX EXAMPLE DIVE 35 GAUGE MODE 39 STOPWATCH 39 RESETTABLE AVERAGE DEPTH 39 DECOMPRESSION AND GRADIENT FACTORS 40 MENU STRUCTURE 43 OP...

Page 3: ...ADVANCED CONFIGURATION 2 78 ADVANCED CONFIGURATION 3 79 STARTING BLUETOOTH 80 FIRMWARE UPDATE 80 FIRWARE UPDATE USING SHEARWATER DESKTOP 81 FIRWARE UPDATE USING SHEARWATER CLOUD MOBILE 82 DIVE LOG DO...

Page 4: ...mputer has bugs Although we haven t found them all yet they are there It is certain that there are things that this computer does that either we didn t think about or planned for it to do something di...

Page 5: ...er for open and closed circuit divers Although we strive to make the Perdix easy enough to use without reading the manual please take some time to read this manual to get the best performance from you...

Page 6: ...res can be found in the PERDIX AI Operating Instructions manual MODELS COVERED BY THIS MANUAL This manual provides operating instructions for the Perdix in the following technical operating modes Open...

Page 7: ...nner Any combination of oxygen nitrogen and helium Air Nitrox Trimix Open and closed circuit switchable during a dive 5 CC and 5 OC gases Gases can be changed and added during a dive CNS tracking No l...

Page 8: ...traps or two bungee cords Both types are included in the box Install the elastic straps as shown in the image below The buckles feature a locking mechanism to prevent them from inadvertently loosening...

Page 9: ...mounting holes under very high load We find that the knot shown on the right works well This knot has the nice feature of creating loops that stay wide open while putting the Perdix on your wrist 1 2...

Page 10: ...her altitude then the Perdix auto on will occur at a deeper depth For example when at 2000 m 6500 ft altitude the atmospheric pressure is only about 800 mbar Therefore at this altitude the Perdix must...

Page 11: ...through information screens In a menu Performs command or starts editing Editing a setting Saves the setting s value BOTH BUTTONS When Perdix is off pressing MENU and SELECT at the same time will tur...

Page 12: ...ion needed for technical diving Top Row Depth Time Deco Stops Centre Row PPO2 Bottom Row Mode Gas Deco Info COLOUR CODING Colour coding of text draws attention to problems or unsafe situations text in...

Page 13: ...currently ascending Imperial 1 arrow per 10 feet per minute fpm of ascent rate Metric 1 arrow per 3 meters per minute mpm of ascent rate Imperial In feet no decimal places Metric In meters displays wi...

Page 14: ...drawn below the word Time It takes 15 seconds to underline each character in the word Does not display the seconds bar when not diving Battery Icon The default behavior is that the battery icon is sh...

Page 15: ...west depth to which you can ascend Time The time in minutes to hold the stop By default the Perdix uses a 10ft 3m last stop depth At this setting you may perform the last stop at 20ft 6m with no penal...

Page 16: ...he surface interval Surface Interval When on the surface the STOP DEPTH and TIME are replaced by a surface interval display Shows the hours and minutes since the end of your last dive Above 4 days the...

Page 17: ...losed Circuit with Internal PPO2 Setpoints Salinity Fresh Next Edit Mode OC Mode Setup Salinity Fresh PPO2 Mode Int Low SP 0 7 High SP 1 3 Next Edit Mode OC CC Mode Setup 1 15 GasPO2 1 3 CC Internal S...

Page 18: ...in the System Setup Center Row Menu The left and right positions can be set to display the following STOP TTS OC 15 40 O2 HE NDL DEPTH TIME MAX ft GasPO2 200 1 15 0 225 TIME 56 22 130 1 Left Max Depth...

Page 19: ...d i e Clock plus TTS In 24hr or am pm format same as system setting Does not show am or pm Timer Timer stopwatch display Compass A miniature compass Works like a regular compass with the red end of th...

Page 20: ...ent breathing configuration One of Current Gas O2 He The current gas shown as a percentage of Oxygen and Helium The remainder of the gas is assumed to be Nitrogen In closed circuit mode this gas is th...

Page 21: ...rcentage of the B hlmann allowable supersaturation at the current depth 5 The predicted time to surface TTS if you were to stay at the current depth for 5 more minutes CEIL The current ceiling in the...

Page 22: ...l information The bottom row is also used to show additional information By using only the bottom row for this additional information the critical information contained on the Top and Center Rows is a...

Page 23: ...s is turned on two presses of the SELECT button will bring up the first info screen The example above depicts infoscreen sequencing with the compass turned off When all info screens have been viewed p...

Page 24: ...urface and turned off When deco tissues are reset the CNS will also be reset The CNS value short for Central Nervous System Oxygen Toxicity is a measure of how long you have been exposed to elevated p...

Page 25: ...lays in Flashing Red when less than 0 19 or greater than 1 65 Diluent PPO2 Only displayed in CC mode Displays in Flashing Red when the partial pressure of the diluent is less than 0 19 or greater than...

Page 26: ...boundary between the green and yellow zones is the ambient pressure The boundary between the yellow and red zone is the ZHL 16C M Value pressure Note that the scale for each tissue compartment above...

Page 27: ...g pressure M Value pressure Inspired inert gas pressure 16 tissue compartments TISSUES TISSUES TISSUES TISSUES TISSUES On surface sat with air Note Gas is 79 N2 21 O2 or Air After descent On gassing L...

Page 28: ...nt now pressure The current pressure is only shown on the surface The surface pressure is set when the Perdix is turned on If the Altitude setting is set to SeaLvl then surface pressure is always 1013...

Page 29: ...wed by pressing the SELECT right button once Press SELECT again to continue on to view the regular info screens Unlike the regular info screens the compass never times out back to the main screen Pres...

Page 30: ...arrow When within 5 of the reciprocal heading the degrees display turns red When more than 5 off the marked heading a green arrow shows the direction back to the marked heading Also the offset degrees...

Page 31: ...recommend comparing the compass accuracy to a known good compass with and without the interfering object in place to see if it has an effect Shipwrecks may interfere with the compass reading and so th...

Page 32: ...Bar Flexible display setup Optional Gas Time Remaining GTR and Surface Air Consumption SAC rate based on one of the tanks Logging of pressure GTR and SAC values at 10 second intervals Average SAC of l...

Page 33: ...returning to the main screen Anything that had been previously saved will be retained Anything that was in the middle of editing will be discarded Only menus necessary for the current mode are shown...

Page 34: ...surface TTS shows one minute This shows that the computer is expecting the diver to ascend at approximately 33 feet per minute or 10 meters per minute The dive predictions are based on this ascent rat...

Page 35: ...lists before each dive This screen is available in the System Setup menu For this dive the only CC diluent is trimix 10 50 10 O2 50 He 40 N2 Setup OC Gasses For the OC bailout gas list several gases...

Page 36: ...an be deadly near the surface Pressing SELECT brings up the first info screen which shows the diluent PPO2 The red indicates it is unsafe to breathe directly You can view this info at any time to veri...

Page 37: ...first stop to clear before we reached it This often happens with slow ascents Note that the GF99 value now indicates that the leading tissues are now off gassing However at this deep depth most tissu...

Page 38: ...a better gas is available Pressing MENU twice brings up the SELECT GAS menu and pressing SELECT enters it With the new style gas select menu the best gas will already be the initial selection just pre...

Page 39: ...s Maximum and Average Depth on main screen Stopwatch Resettable Average Depth The Gauge display is organized as Depths along the left Times along the right Most important information Depth Dive Time o...

Page 40: ...ritten The computer implements Gradient Factors by using levels of conservatism The levels of conservatism are pairs of number like 30 70 For a more detailed explanation of their meaning please refer...

Page 41: ...rmines the depth of the first stop Used to generate deep stops to the depth of the deepest possible deco stop The higher Gradient Factor value GF Hi determines the surfacing tissue supersaturation Gra...

Page 42: ...bout to occur in the next 5 seconds Divers can encounter longer than expected decompression stops as well as inaccurate time to surface predictions if they fail to to switch to a better gas when promp...

Page 43: ...en Turn Off Select Gas Dive Log System Setup Define Gas Dive Planner Conserv NDL Display Brightness Display Log Next Log Restore Mode Mode Setup Deco Setup AI Setup OC Gases Display Setup Compass Syst...

Page 44: ...y Surface only Surface only Define Gas Dive Planner Conserv NDL Display Brightness Display Log Next Log Restore Mode Mode Setup Deco Setup AI Setup CC Gases Display Setup System Setup Advanced Config...

Page 45: ...topwatch Dive Setup Dive Log System Setup Surface only Only if running Diving only Surface only Surface only Brightness Display Log Next Log Restore Mode Gauge Setup AI Setup Compass Sub Menus Delete...

Page 46: ...he Turn Off item puts the computer to sleep While sleeping the screen is blank but the tissue contents are maintained for repetitive diving The Turn Off menu item will not appear during a dive on any...

Page 47: ...the Switch Setpoint menu item will be the first item displayed since the Turn Off displays are disabled when diving Pressing SELECT when this menu is displayed changes the PPO2 setpoint from the low s...

Page 48: ...n open circuit mode or the diluent in closed circuit mode Gases are always sorted from most to least oxygen content A gas that is off will be shown in Magenta but can still be selected It will be turn...

Page 49: ...ou push a station selection button it will take you to another FM station If you add a new station it will be an FM station Similarly if you are in the AM mode adding or deleting a station would add o...

Page 50: ...available Classic and New Change between the two styles in the Adv Config 1 menu Classic Style Select Gas The classic Select Gas style is as described on the previous page One gas is shown at a time P...

Page 51: ...hown in Magenta purple Gases are sorted from highest O2 to lowest O2 When diving and there is a deco stop the first gas pointed to will be the most appropriate gas highest PPO2 less than 1 61 This red...

Page 52: ...lculations At this point the diver may want to switch to a different gas but since the diver may have other things to deal with the computer will make a best guess of which gas the diver would choose...

Page 53: ...P DEPTH Edit Next TIME 0 1 5 5 2h45m High Setpoint The high setpoint function works exactly like the low setpoint function Another press of MENU will increment it again If SELECT is pushed the current...

Page 54: ...ches 9 it will roll over to 0 Pushing SELECT will allow you to edit the current gas The gas contents are edited one digit at a time The underline will show you the digit being edited Pushing the MENU...

Page 55: ...n the last digit will finish editing that gas and bring you back to the gas number Any gases that have both oxygen and helium set to 00 will not be displayed in the Select Gas function Pushing MENU wi...

Page 56: ...full picture of the OC and CC gases you are carrying and can make informed predictions about decompression times There is no need to turn gases off and on when you switch from CC to OC because the com...

Page 57: ...decompression profile assuming the ascent will begin immediately There are no settings to enter RMV is last used value Limitations The Perdix Dive Planner is intended for simple dives Multi level dive...

Page 58: ...entage violations or isobaric counter diffusion risks due to sudden helium switches The user is responsible for ensuring a safe profile is followed Result screens The results are given in tables showi...

Page 59: ...mary Screen No Decompression Results Screen Conservatism The conservatism settings GF High and GF Low can be edited in the Dive Setup menu While diving only the GH High value can be edited This allows...

Page 60: ...instead of the NDL This is the equivalent of the Man on a rope It will show your ceiling without it being rounded up to the next even 10 foot or 3 meter stop Please note that there is very limited inf...

Page 61: ...ere to lose a significant portion of their gas and needed to get shallow fast they could ascend until they reached a gradient of 90 then stop until it dropped to 80 then ascend to 90 again etc That wo...

Page 62: ...means that you can stay down out of the current for 5 minutes and burn off about 4 minutes of deco You may decide to accept the 80 decompression efficiency and stay out of the current When your TTS is...

Page 63: ...pecially in bright sunlight Auto will use the light sensor to determine the brightness of the display The more ambient light there is the brighter the display will get At depth or in dark water very l...

Page 64: ...of dive in minutes Minimum maximum and average temperature Dive mode OC Tec CC BO etc Surface interval preceding the dive Recorded Surface Pressure at the beginning of the dive Deco model and gradien...

Page 65: ...ed to the Dive Log The Delete All Logs option is also changed to Restore All Logs when Restore mode is enabled Delete All Logs Deletes All of the Logs Deleted Logs can be restored by toggling Restore...

Page 66: ...Dive Setup are available in System Setup not all settings in System Setup can be edited in Dive Setup The MENU and SELECT buttons are context sensitive to each sub menu and individual setting When cy...

Page 67: ...n tissues are cleared This is because when in Gauge mode the Perdix does not know what gas you are breathing and therefore cannot track inert gas loading Salinity Water type salinity affects how the m...

Page 68: ...Setup PPO2 Mode PPO2 mode is only set when CC is enabled On the Perdix this value is always Int internal fixed PPO2 Low and High Setpoints The Low and High PPO2 Setpoints are only available when CC i...

Page 69: ...onservative Last Stop Allows you to choose where to do your last stop The choices are 10ft 3m and 20ft 6m Note that this setting does not affect decompression It only makes the TTS prediction more acc...

Page 70: ...to 1 3 You finish your bottom time then begin ascending When you ascend above 41ft it switches down to 0 7 When a switch is set to Auto you can always manually override the setting at any time during...

Page 71: ...Longest battery life Low Second longest battery life Med Best mix of battery life and readability High Easiest readability especially in bright sunlight The Auto option measures ambient light levels...

Page 72: ...easures the surface pressure to be less than 965 mbar then the Altitude setting will be forced to Auto and cannot be changed Accurate depth measurements and decompression calculations require knowing...

Page 73: ...rdix model but can be used if you wish to wear the Perdix such that the button are on the top of the device In the normal orientation buttons are at the bottom of the display If you flip the display t...

Page 74: ...eel the most natural The 90 and 120 settings allow a wider range to be seen at once The default is 90 True North In most places a compass does not point towards True North but rather to Magnetic North...

Page 75: ...o as many 3D positions as possible Upside down sideways on edge etc Compare with another compass not a smartphone as those are terrible to check your calibration TIPS FOR A GOOD COMPASS CALIBRATION Co...

Page 76: ...me which allows the user to set the current time The format can be set to AM PM or 24 hour time Unlock Code The next System Setup changeable option is Unlock which allows the user the VPM B Unlock in...

Page 77: ...lay Sets the time in seconds to wait after surfacing before ending the current dive This value can be set from 20 seconds to 600 seconds 10 minutes Default is 60s This value can be set to a longer tim...

Page 78: ...hat is less than or equal to this value Also the suggested gas switches when the current gas is displayed in yellow are determined by this value If you change this value please understand its effect F...

Page 79: ...total time can be set anywhere between and 1h and 9h 59m The stack timer can be set to count down either when diving or when the computer is ON A warning will alert the diver when the stack timer has...

Page 80: ...h 5h57m Cancel Initializing Cancel Wait PC 2 58 During the update process the screen may flicker or go blank for a few seconds FIRMWARE UPDATE Upgrading the firmware resets decompression tissue loadin...

Page 81: ...u will be asked to select the language In Shearwater Desktop go to Dive Computer Update Firmware Ensure that you have the latest version of Shearwater Desktop You can get it by clicking here FIRWARE U...

Page 82: ...tab on the Shearwater Mobile App 3 Connect your dive computer 4 Press the UPDATE FIRMWARE button 5 Select your language 6 Shearwater cloud mobile will send the new firmware version The Perdix screen...

Page 83: ...erdix Manual DocRev B 83 DIVE LOG DOWNLOAD DIVE LOG DOWNLOAD WITH SHEARWATER DESKTOP In Shearwater Desktop go to Dive Computer Download Dive Log The Download Dive Log window should pop up Start Blueto...

Page 84: ...e a screen like this The first time you download dives from your Perdix you will be asked to give the Perdix a name If you have multiple Shearwater dive computers you will be able to easily tell which...

Page 85: ...Shearwater Cloud Mobile connect to the dive computer and select download dives Once connected it will download a list of available dive logs and you will see a screen like this Select any dive logs y...

Page 86: ...x can accept any AA sized or 14500 size battery that outputs a voltage between 0 9V and 4 3V Reinstalling the battery cap It is very important that the battery cap O rings are clear of dust or debris...

Page 87: ...have high self discharge Provide about 30 hours of operation per charge Can die quickly so care should be taken to ensure sufficient charge prior to diving 3 6V Saft The Saft LS14500 lithium batteries...

Page 88: ...a screen appears for quick adjustments to the time The Perdix uses a highly accurate quartz crystal for time keeping Expected drift is about 1 minute per month If you notice higher drift it is likely...

Page 89: ...sues are shown with shortcut to reset Resetting the deco tissues sets them to saturated with air at the current atmospheric pressure If at time of battery replacement any tissue is below saturated wit...

Page 90: ...se positive Or they can fail to alarm when a real error condition occurs false negative So by all means respond to these alarms if you see them but NEVER depend on them Your judgement education and ex...

Page 91: ...ge default 1 65 Change your breathing gas to one safe for the current depth Missed Stop A required decompression stop was violated Descend to deeper than the currently displayed stop depth Monitor for...

Page 92: ...N A New Unlock Not really an error just notification that a new unlock has been applied N A Upgrade Failed Firmware update failed possibly due to a communications error or corrupted file Try the firm...

Page 93: ...han 30 seconds It is not unusual to get this error immediately after submerging with a manual CCR and a hypoxic mix The first breath after submerging floods the loop with low PPO2 gas The situation is...

Page 94: ...te This alarm will only appear once during a dive but it will also appear once on the surface after the dive Tissues Cleared This alarm will show when the decompression tissues are cleared All decompr...

Page 95: ...battery changes Adjust the time in the System menu Battery life is short Ensure the battery type setting is correct The battery gauge will not function correct if the setting does not match the actua...

Page 96: ...toring Do not wash under high pressure jets of water as it may cause damage to the depth sensor Store the Perdix dive computer out of direct sunlight in a cool dry and dust free environment Avoid cont...

Page 97: ...e end 0 9 m of sea water Operating Temperature Range 4 C to 32 C Short Term hours Temperature Range 10 C to 50 C Long Term Storage Temperature Range 5 C to 20 C Battery AA Size 0 9V to 4 3V User repla...

Page 98: ...xperienced radio TV technician for help Any changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment Caution Exp...

Page 99: ...USA Tel 1 858 775 4099 usaservice shearwater com EU Service Center Narked at 90 Ltd 15 Bentley Court Paterson Rd Wellingborough Northants UK NN8 4BQ Tel 44 1933 681255 info narkedat90 com Asia Pac Se...

Page 100: ...www shearwater com OP E R AT I N G I N ST R U C T I O N M A N U A L...

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