C-POD User Guide BPC4
Contents
1. causing damage to the electronics and loss of data Transducer housing Bio fouling or contamination with grease or paint can be removed using the kind of abrasive pads and preparations used for cleaning cooking utensils Mooring lines Inspect the mooring lines after every deployment for signs of wear mainly abrasion against rough surfaces The yellow sleeve on the mooring line is positioned to protect the rope from abrasion by the bottom of the C POD housing Check that it is still in the correct position Electronics an 30 C POD USER GUIDE Do not connect batteries or other DC power supplies above 11 volts Supply voltages above 11 volts will damage the C POD irreversibly Silica Gel Silica gel packs should be inserted into the C POD to absorb any water vapour and keep the electronics dry When you remove a silica gel pack after opening a C POD put it immediately into an airtight container When dry silica gel is yellow orange in colour The crystals turn green when damp To restore the crystals place the bag in an oven and heat at 120 C for two hours There may be a risk of corrosion if there is no silica gel to keep the humidity low Corrosion may cause power loss or failure of electronic components which may lead to data loss Storage Before you store your C PODs Remove all batteries Clean off all barnacles and other marine encrustations Wash the outside of the POD housing and any m2. POD lid and keep it waterproof when it is closed Use these spares to replace the existing O rings if they become damaged C POD USER GUIDE 7 Secure Digital SD cards Two SD cards are supplied with each C POD On delivery you will find one SD card in the POD s SD card holder and one in the lid SD cards are not interchangeable between C PODs and are labelled with their correct C POD number to help prevent them from being used in the wrong C POD No setup is required all the setup information for the C POD is already stored on the SD card When the C POD is deployed it writes click data to the card On retrieval you copy the data from the card by using a PC running the CPOD exe software When you retrieve a C POD after deployment you can replace the SD card with the spare and immediately redeploy the C POD The SD cards have a write protect tab on the side To run the POD the tab should always be down in the unlocked read write position as shown below If it is moved up to the locked position the POD will not start Required for the POD to run Lock after deployment to protect your data LOCKED UNLOCKED write protected Silica gel pack The silica gel pack is used to prevent condensation on the inside of the C POD when it is deployed Two packs are supplied for each POD one for deployment and one spare an The silica gel pack slides down between the batteries and the POD housing There may be a risk
3. information and guidelines that you should consider carefully when designing your moorings Buoyancy A 10 D cell C POD has a positive buoyancy of approximately 0 7 kg This means that PODs can be moored by their own 18 mm polypropylene mooring line and allowed to float with the hydrophone housing upwards The C POD mooring line is near the centre of the POD so that in tidal streams the forces on the upper and lower halves of the C POD are balanced and the POD remains vertical 10 C POD USER GUIDE Attitude sensing The C POD contains an attitude sensor which records the angle from vertical each minute The attitude can be viewed in CPOD exe when you have copied your data files after deployment enabling you to ensure that the C POD was correctly deployed in a vertical position The sensor is set to prevent logging until the C POD is deployed when the hydrophone housing floats higher than the lid of the C POD This allows the C PODs to be set up and transported some time before deployment saving power and memory Location The sea bed is a source of noise from sand movement and crustaceans and the surface is a source of ultrasound from rain and breaking waves Generally speaking the sea bed is as noisy or noisier than the surface For most deployments the aim is to have the C POD at least 3 metres up from the bottom and at least 5 metres down from the surface Security The main problems with moorings are theft being moved
4. of corrosion if there is no silica gel to keep the humidity low Corrosion may cause power loss or failure of electronic components which may lead to data loss Additional requirements In order to run the CPOD software and download data from SD cards you need a computer running Microsoft Windows 95 NT 2000 XT Server 2003 Vista or Windows 7 Also prior to deployment if you choose to re use batteries it is recommended that you check their voltages using a voltmeter to ensure that they are suitable for the period of deployment The section Retrieving C PODs on page 22 contains a recommended kit list for deploying and retrieving PODs C POD USER GUIDE 3 Software installation The installation procedure described below consists of downloading files from the Chelonia web site Tip Visit the links below on a regular basis to check for updates and modification information or join the C POD User Group at www chelonia co uk cug_join htm Installing the software Tip The C POD software is being developed and improved continuously Make sure you have the latest version of the program as well as the software guides To install the C POD software 1 Create a folder called CPOD on your computer 2 Go to the Chelonia C POD downloads page at http www chelonia co uk cpod_downloads htm 3 Download CPOD exe to the new CPOD folder 4 Download any other support documents such as setup videos software guides and example fi
5. reset button LED lights after 3 seconds Release setup button Flashes every 5 seconds for 1 minute After 1 minute the POD records temperature angle Hydrophone up data recording Hydrophone down POD records temperature angle Press release setup button Remove SD card When I opened the C POD after deployment the power LED was off Batteries exhausted When battery voltage drops too low the C POD writes a data summary to the SD card and shuts down automatically Your data and summary files will be intact You can copy them to your PC in the normal way using CPOD exe see Downloading your data on page 26 Battery power failed suddenly The C POD may not have been able to write a data summary However any data recorded up until the power failed will be intact You can copy the data files to your PC in the normal way using CPOD exe but you will not be able to view summary information first see Downloading your data on page 26 C POD USER GUIDE 33 Corrosion of battery contacts The positive terminal battery contacts can suffer from corrosion if they become damp This can cause a loss of power and data A tool to clean the contacts is available free of charge from Chelonia SD card full If the SD card becomes full the POD writes a summary file and shuts down automatically Your data and summary files will be intact The SD card could become full if the POD has been deployed for a long period in a very noi
6. they face the hydrophone Porpoises tend to move away from moving boats and become undetectable over a width and distance that varies both with boat characteristics and with porpoise familiarity Detection well beyond the range of responsive movement is unlikely with the C POD so no undisturbed data set is available Dolphins find towed C PODs very interesting and will follow for long periods and get detected easily but again the variables controlling this interaction are almost impossible to determine Towing a long way behind a yacht might give a usable way of filling weather gaps in survey data for porpoises and crude dolphin encounter data C POD USER GUIDE 13 5 Setting up C PODs for deployment It is strongly recommended that before you deploy your PODs A you practice setup starting closing opening and downloading data as described in this section and sections 6 and 7 so that you are confident about the operating procedures Tip A link to brief videos showing how to start and stop the POD can be found on the Chelonia web site at http www chelonia co uk cpod_downloads htm Opening the C POD 1 Use a wrench like those shown below or a rope attached to an anchor point to hold the C POD body while using a heavy screwdriver or bar to twist the lid open Internal parts Battery pack connector spring adjustment screw SD card holder The spare SD card is located under the foam in the POD li
7. 1 etc Tip When you have extracted and safely stored the data from the SD card you can reuse the card immediately it does not need to be set up as the C POD setup information is retained on the card Any data on the SD card will simply be overwritten by the C POD when it is deployed Remember to move the SD card LOCK switch back down to the read write position 28 C POD USER GUIDE 8 Analysing your data The CPOD software allows you to view analyze and export your data It includes automatic click train detection using the KERNO classifier and encounter classifiers that we will continue to develop as more data becomes available see the software manual CPOD PDF at www chelonia co uk cpod_downloads htm This path of developing software which can be used on all collected data has been successfully followed in the C POD s predecessor the T POD However the T POD software is not able to analyse data from the C POD as the C POD logs many more click features The provision of a single method for use in a wide range of projects is a key aim in the development of the C POD We would like to use customer C POD data to help us improve the accuracy and sensitivity of the C POD PC software train filter and species identification Any software improvements we make will always be retrospectively applicable to all data sets and new versions of the C POD software will be available free of charge so that you can re analyse your data If y
8. E E A 11 CCU ea ne E A A E TEA E 11 UE E E EEEE EA cee ee eee ee 12 Mooring lines cccccseecceseeeeeceeseeeecaeeeeeeeuseeeeaeeesseueeeeeeegeeeessaneessnagess 12 Using ANG FOS opac scrrcinciousssagece cee neaeencedeasesescaoeuseneeueemaeceameesadsaaesneeaesteesceeaeses 13 OVS ara oineteanciiumeasantoannbsimads suaiesanmohiemanaetans 13 Direcional y esien aa 13 TOWING the C POD pisiicccccinse te edeatoncenssaitynncenitendsintintedackseecdecaseuesusestendkinteueles 13 Setting up C PODs for deployment ccceesesseeeeeeeeeeeeeceeenneeeeeenees 14 Opening the C POD ccccccccsesecceeeeeseeeeeseeeeceeeeeseeeeeeeeeeeesssaaeaaeeeeeeeeesaaas 14 Internal ANS ihcancinactceainntpncncduetuedestutersnaianeradueisasedduatancestutmunmuapeeniomsaiies 14 Installing batteries ee ceceecceseeeeeceeeseeeeneeeeeecaeeeeeseeeeeessaeesessaaeeesaaeeeeeaaes 15 arimo WS ee wt crs en ease E muses tnt aoe soeein eee eee 17 70 a a 10 POWE eee 17 INSEF TNC SD CON eera AEE EEI 17 C POD USER GUIDE 3 Stat ne POD ate tacts thesia aa aaa aa haute de incase cemantate 18 SEUD SUMMAN scree sete chara Guess sausiaas enue cerecctedn ieee Veeecaasieneveetcaeo 19 Closing the G POD vacua ee eater acto eteta as 19 6 Retrieving C PODS inoia a AE A 22 Opening the C POD after deployMent cc cceeeccceeeseeseeeeeeeeeeeeeessaeeees 22 Checking the status of the POD and removing the SD card 0 23 i Bl re gee er eer er ee e
9. POD housing 8 Press and hold down the setup button until the C POD power LED goes out and comes on again about 3 seconds 9 Release the button and note the date and exact time 10 Observe that the power LED is flashing once very briefly every few seconds 11 Close the C POD C POD USER GUIDE 25 T Downloading your data When you have retrieved your SD card from a deployed C POD you can read the data using the CPOD exe software an The CPOD exe software has a Summary feature that allows you to check the data on the SD card quickly so that you can make a decision about whether to redeploy the C POD or spend time downloading the data files and analysing them Note that logging time in the summary file can be up to 10 lower than your recorded time The files are on the SD card are DATAO CHE DATA1 CHE etc the data files each of about 1 GB SETUP CHE a very small file containing configuration details After an SD card has been read into a PC it can be put back into a C POD for redeployment Any new data will overwrite the old data on the card Do not format the SD card or write any files on to it The SD card uses a special format which you can read only by using CPOD exe If you use any other application to write to the SD card it will become unusable and any data on it may be corrupted or lost Connecting the SD card to a PC an To set up your SD card 1 Move the LOCK switch on the SD card up to
10. Yoo AK Chelonia Limited C POD User Guide WWW CHELONIA CO UK C click POD TAD T POD and C POD and DeepC POD are trademarks of Chelonia Limited Information in this document is subject to change without notice 2008 2011 Chelonia Limited All rights reserved November 2011 2 C POD USER GUIDE 1 BEE OCU e iTo p OENE EE E E E E E E A 5 Help and SUPPO Soederesesedsetexncncesetessesosayeunsceessasenessscnusieets cases aadeceaencasensesenuete 6 Checking partS sssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn mnnn 7 OO ara cbr nese eee ee ae ete cep 7 DPE TING eE EAEE EA 7 Secure Digital SD Cards cccccccccceseeseeeeeeeeeeeeeeeeseeeeeeesesaaeseeeeeeeeessaaaaeess 8 gt ere gelpa K Qe ene eee ee eee eee eee eee ee eee 8 Additional requirement cccccccseccccesscceecseseceeceeeceeseeeeseeeeeeeesaeeeeseaeees 8 Software INS LANLAU Occ dices reeds ese aerssecdeenstanudanvadenessocsenervivesiuausvieuteseeaanesways 9 installing TAS SON WANS sain cnctcsunnesranatancatinaent a 9 QMIS a A 9 Uninstalling the software ccccceeccccceeeeeeeeeeesaeeseeeeeeeeeeeeeaeeeeeeeseeseeeeeeeaas 9 Planning your deployments cccccccsesseeeeeesseeeeeseeesseeeseeeesneeseoeseeeees 10 Calculating the maximum deployment tiMe cccccceeeeeseeseseeeeeeeeeeeaes 10 EOS OUN aee A E E 10 MOOI eea E E E E E cents 10 SUG ANC ci ae E EEEE 10 AUGE Sen ING geran EE A E E cscs 11 LOCO
11. ard in the bag You can enter the date and time into CPOD exe when you copy your data onto your PC and it will be incorporated into the data file The C POD will not start logging click data until the hydrophone is higher than the lid This allows you to transport the POD without wasting battery power and memory space When the C POD is deployed in the sea it will float vertically hydrophone housing upwards and will start logging automatically see Buoyancy on page 10 and Attitude sensing on page 11 18 C POD USER GUIDE Setup summary The set up sequence is summarised below Disconnect the C POD for at least 4 minutes to reset the electronics Connect the power a a A Insert the SD card into the holder and press it down quickly but gently single LED flash E ml or double LED flash M_E E Press hold until LED lights release the setup button and note the start date time very brief LED flash H 1____ ____ 1 When the C POD is deployed and floats vertically hydrophone up it will start logging len If the power LED does not show the correct sequence of flashes your C POD may not be set up correctly Remove the SD card and disconnect the power for at least 4 minutes to ensure that the POD electronics are reset Then reconnect the power and reinsert the SD card Tip A link to brief videos showing how to start and stop the POD can be found on the Chelonia web site at http w
12. by trawlers or storms and abrasion of lines C POD USER GUIDE 11 Theft This is a serious risk in many areas Some possible solutions are suggested below Get cooperation and advice from local fishermen who may allow you to use their gear Use a very small marker for example a single fishing float on a thin line that is only at the surface at low slack tide The disadvantage is that it may wind itself around weed or anything else and sink Do not use buoys Use a line between two anchors that can be located via GPS using a grapple Use pop ups These are commercially available acoustic releases However currently they are very expensive Use C links that dissolve after a set time in the water and then release a recovery buoy from the bottom Use divers to deploy and recover your C PODs Mooring lines The C POD is supplied with an 18 mm polypropylene line attached near the centre of the housing to minimise tilt in a current A security line can also be attached to the lid Hydrophone at least 5 metres from the surface and at least 3 metres from the sea bed Anti chafing tube Security line Mooring SS a SD B g z SSS SS SS SS Design the mooring using a mixture of sinking ropes and buoyant ropes Use sinking ropes so that no loops of cordage float at the surface to entangle propellers and buoyant ropes that do not lie on the bottom and suffer excessive abrasion 12 C POD USER GUIDE Use knots
13. ctor spring new batteries for redeployment a voltmeter to check battery condition if you want to re use batteries a waterproof marker pen to write contact details on the C POD housing any tools for your attachment method a splash proof box for this kit Tip When you retrieve the C POD it will continue to log while the hydrophone housing is higher than the lid If you are not opening the POD immediately store it horizontally or hydrophone down to save power and memory In this position it logs only its angle to vertical and ambient temperature Opening the C POD after deployment When you retrieve a C POD 1 Use a plastic scraper to clean off any heavy fouling 2 Scrub and wash the C POD housing 3 Dry the C POD and lid especially around the O ring 4 Open the C POD in a dry stable location 22 C POD USER GUIDE Checking the status of the POD and removing the SD card Ven As soon as you have opened the POD after deployment make a visual inspection and make a note of the LED status Then read the appropriate section below LED OFF The POD has stopped 1 Remove the SD card by pressing down gently on the card and then allowing it to spring up If the POD lost power suddenly there will be no summary file on the SD card Ifthe batteries have run down or if the SD card is full the POD will have shut down and recorded a summary file Flashing on off twice second The POD has reset or was not starte
14. d Setup button 14 C POD USER GUIDE Installing batteries The C POD battery pack consists of 2 stacks of cells side by side in the POD housing with the positive end of all cells facing inwards Earlier C PODs hold 8 D cells 4 in each stack Later C PODs hold 10 D cells 5 in each stack For most purposes alkaline D cells are recommended Rechargeable D cells can be used providing the voltage from each stack does not exceed 11 volts However the self discharge rates and power density of most types of rechargeable D cell means that running times are reduced below half The total voltage of each stack of cells must not exceed 11 volts Supply voltages above 11 volts will damage the C POD irreversibly A stack of Lithium D cells must not be used the voltage from four cells is too high and will damage the C POD irreversibly Two lithium D cells and conducting blank cells could be used but the capacity advantage Is minimal NiCad rechargeable batteries are not recommended as they are heavy and are likely to sink the C POD They also have a high self discharge rate so that the running time is shorter than you would expect from the capacity of the cell The C POD uses one stack of D cells at a time The electronics selects the stack that provides the lower voltage When the voltage from this stack of cells falls too low it selects the other stack of cells automatically Deployment time using 8 or 10 D cells i
15. d 1 Remove the SD card by pressing down gently on the card and then allowing it to spring up Single or double flash second The POD was setup but not started 1 Remove the SD card by pressing down gently on the card and then allowing it to spring up One brief flash every 2 seconds The POD is running correctly logging temperature and angle to vertical Tip In the step below record the date and exact time that you release the setup button This will allow you to check in the software later that your deployment time matches the length of your data 1 Press and hold down the setup button until the power LED lights 2 As soon as the LED lights you can release the setup button and note the date and exact time The C POD stops recording and the LED stays on briefly while the POD writes a data summary on the SD card 3 Remove the SD card by pressing down gently on the card and then allowing it to spring up The power LED flashes rapidly approximately 2 times a second C POD USER GUIDE 23 Tip PODs before 970 that have not had a firmware upgrade do not flash after the SD card has been removed after deployment This is normal Completing retrieval Tip If you disconnect the batteries before recording the data summary your data will not be damaged and it can still be copied from the SD card using CPOD exe However you will not be able to view the summary data before you copy the files see section 7 Downloading yo
16. e ne ae ce Oe ede 23 Flashing on off twice second ceccceeeseeeeeeeeeeaeeeeeeeesaeeeeeeeeeaeeeeeeeeas 23 Single or double flaSh SECONA ccccceeseeseceeeeeeeeeaeeeseceeeeeesuaaeeeeeees 23 One brief flash every 2 seconds cccccccssseeccceeeeeeasseeseeeeeeeesesaaaseseees 23 Completing retrieval ccs c teeccectsivion tet eee Adee 24 Redeploying the C POD immediately ccccccccessssssesseeeeeeeeseeeeeseeeeees 24 7 Downloading your data asasnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnn 26 Connecting the SD card to a PC aaseanaannnnnnnnnsennnnennssnsnnnnnnnnnssnnnnrnrersenneeneee 26 Running the CPOD EXE Software cnoic a 27 VIEWING summary Ca la veencesessecuccssaszesta lt aashaceetusaascapesetesdaneteca lt aieaeeeaeeoses 27 Copying fe lal a 0 re I lemme ee ge ees eee ae eee ore ene eee 27 PAMalVSING your dalacin inini r 29 Maintenant Ecne a E 30 deann sedar a E E aycdecea taintda sed stenag 30 ONO e A E EA tea ea ao aesace 30 Transducer NOUSIN oesie a a 30 MOOnAGIME Sras a 30 EIOCUONICS usitas E a a 30 SHIGA GAC EE E ET E E A E E 31 SLO 1O NATE ARAETA AEA E E AAA AEA IAT E A AAA T ee 31 10 Troublesho tihg seiis oeaan a aaa 32 4 C POD USER GUIDE 1 Introduction This User Guide describes how to set up deploy and retrieve data from your C POD C PODs are fully automated static passive acoustic monitoring systems that detect porpoises dolphins and other toothed whale
17. ecome saturated in only 30 minutes of exposure to warm damp air so keep it in an airtight jar or bag until you are ready to close the C POD When dry silica gel is yellow orange in colour The crystals turn green when damp To restore the crystals place the bag in an oven and heat at 120 C for two hours 4 Align the lid and C POD housing carefully and begin screwing them together Screw the C POD and lid together tightly ensuring that the visible O ring is compressed 20 C POD USER GUIDE The C POD is now ready for deployment The C POD is recording its angle to vertical and the temperature but will not start logging click data if it is kept horizontal The C POD is set up to start logging automatically when it is allowed to float vertically hydrophone housing upwards see Buoyancy on page 10 and Attitude sensing on page 11 C POD USER GUIDE 21 6 Retrieving C PODs lt is recommended that you take the following kit with you when you retrieve C PODs at sea a means of recording your observations a watch to note the exact time of retrieval and redeployment a scrubber and scraper to remove bio fouling a heavy screwdriver and C POD wrench to open and close the C POD a towel a pair of tweezers to remove the silica gel an airtight container to put the silica gel in paper towels to clean any sand or grit that may have lodged under the O rings a spare set of O rings in case of damage the spare battery pack conne
18. ftware and documentation on our web site at www chelonia co uk Keep up to date with important changes by joining the C POD User Group at www chelonia co uk cug_join htm You can also contact us in the following ways Chelonia Limited Beach Cottage 5 Beach Terrace Long Rock Penzance TR20 8JE UK Tel 44 0 1736 711034 Fax 44 0 1736 800095 Email team chelonia co uk C POD USER GUIDE 2 Checking parts Once you have unpacked your C POD check to make sure that you have all the correct parts Wd Houses the hydrophone Buffer ring Battery pack connector spring D Uf Spare O rings Silica gel Mooring line Wee ate Anti chafing tube Cid E SD cards located inside the POD lid SD card reader C POD User and SD card holder Guide C POD The C POD consists of a polypropylene casing with hydrophone housing at one end and a removable lid at the other end There is a metal retaining ring around the centre of the POD that holds the mooring line There is a yellow anti chafing tube on the mooring line This should be positioned to prevent the POD lid from wearing the line during deployment C PODs are very robust but be careful not to drop the C POD or subject it to hard knocks as this might interrupt the power supply PODs are identified by a unique number that is shown on labels on the SD cards and on the POD housing under the upper buffer ring Spare O rings O rings are used to seal the C
19. in the top of the rod so that the dome of the screw is just below the top of the connector This means you will only have to push the connector down approximately 7 mm to engage the head of the screw This ensures that the battery pack is held securely but not too tightly as too much pressure could deform or damage the battery casings j 7 Disconnect power for at last 4 minutes to allow the POD electronics to discharge 16 C POD USER GUIDE Starting the C POD Connect power 1 Fit the battery pack connector spring as shown above The power LED flashes rapidly approximately 2 times a second to indicate that power is connected rr lS lr Insert the SD card 1 Install the batteries and connect power as described above 2 Check that the SD card tab is in the unlocked read write position see Secure Digital SD cards on page 5 Tip If the SD card tab is in the locked position the POD will not start 3 Insert the SD card into the card holder in the C POD and push it down quickly but gently until it locates in the card holder The power LED now gives either a brief single or double flash per second depending on which battery stack is being used If the power LED does not show the correct sequence of flashes your C POD may not be set up correctly This can happen if you push the SD card in too slowly the LED gives a long flash about once a second Remove the SD card and disconnect the power fo
20. les 5 Create a subfolder for your data files called cpod data Installation is complete Other files You can also download the latest version of this User Guide from http www chelonia co uk cpod_downloads htm Uninstalling the software To uninstall the C POD software 1 Delete the CPOD folder along with any other C POD files C POD USER GUIDE 9 4 Planning your deployments This section contains advice and information to help you plan your deployments Calculating the maximum deployment time Maximum deployment time is dependent upon the following factors The capacity of the D cells usually specified in milliamp hours mAh Using two stacks of D cells each with a 15000 mAh capacity the maximum deployment time is expected to be approximately 4 months The capacity of the SD card an Lost and found Deployment environments are very variable and therefore you should consider carrying out preliminary tests of battery consumption and memory use at sea before full deployment Write your contact details on the outside of the C POD using indelible ink Place a label inside the C POD as well If you prefer not to write your contact details on the C POD the POD lid has the web site address www phonehome org uk etched in the top This is a simple web site that will allow someone who finds a C POD to contact us We will then contact you to arrange its return Moorings This section provides general
21. o slowly so the POD electronics could not set up the card correctly Remove the SD card disconnect the batteries and wait at least 4 minutes Then start the setup procedure again see Starting the C POD on page 17 When you insert the SD card push in down quickly but gently to locate it in the holder Brief videos showing how to start the POD can be found on the Chelonia web site at http Awww chelonia co uk cpod_downloads htm The POD electronics have not been discharged and reset Remove the SD card disconnect the batteries and wait at least 4 minutes Then start the setup procedure again see Starting the C POD on page 17 The write protect tab on the SD card has moved up to the locked read only position Move the tab down to the unlocked read write position See secure digital cards Secure Digital SD cards on page 8 Then start the setup procedure again see Starting the C POD on page 17 The SD card is damaged Start the setup process again using the spare SD card Please contact us for a new SD card 32 C POD USER GUIDE The SD card holder is damaged Try the spare SD card If this does not work either check that the cards are locating in the holder correctly Please contact us for return and repair l m not sure what some of the LED flash sequences mean The various LED flash sequences are shown below Connect power Insert SD card Single or double flash depending on battery stack used Press hold
22. ooring lines using fresh water Protect the C PODs from direct sunlight which causes slow deterioration of the housing and mooring line If you are storing C PODs in a dry place leave them open If you are storing C PODs in a damp place store them closed with active silica gel packs inside C POD USER GUIDE 31 10 Troubleshootino When I deployed the POD I forgot to write down the date and time When you recover the POD if the power LED is still flashing you can give data files a 1 minute accuracy by recording the end date and time when you press release the setup button to record a summary file See Checking the status of the POD and removing the SD card on page 23 When I connect power the power LED does not light Batteries inserted incorrectly Check that the batteries are inserted correctly positive end facing into the C POD negative towards the connector Battery voltages too low Check the battery voltages The C POD requires at least 4 volts in order to run Batteries damaged Check the battery casings for damage to their insulation breaks in the insulation can cause shorting Also check for leakage C POD electronics have not reset Disconnect the power for at least 4 minutes or longer if necessary When connect power and insert the SD card the power LED continues to flash on and off instead of giving either a single or double brief flash per second You inserted the SD card to
23. or fixings that grip the C POD mooring line loop so that there is no possibility of continual movement creating noise that may fill the SD card If you use a shackle you can tape this with electrical tape Position the anti chafing tube as shown above to prevent the POD housing from wearing the mooring line If the C POD attachment rope becomes damaged replacements are available from us Using anchors A few concrete blocks are not adequate on a sandy sea bed as these are dynamic and move with tidal currents Massive concrete anchors digging metal anchors or heavy metal anchors are needed Manhole covers with a central attachment are effective but can be hard to lift Buoys Try to use the smallest buoy that you will be able to find on retrieval This helps to minimises drag in storms However some users have deployed large surface markers with radar reflectors and 4 tonne anchors You might prefer to use a short line that results in the buoy spending most of the time submerged due to the tide stream or tide height appearing only briefly at the surface when the tide is slack or at low water However make sure the float will not be collapsed by the water pressure Directionality All C PODs show lower sensitivity directly along the long axis of the housing especially in the battery pack direction Towing the C POD Towing C PODs is not normally recommended for the following reasons Animals are more or less undetectable unless
24. ou send us a copy of your C POD data we will in return provide brief feedback on the quality of your datasets free of charge Any data you send us will be kept in complete confidence You can send your data to us in any of the following ways email post an SD card to us See our contact details on page 6 copy the data files onto a CD ROM or DVD and post it to us via www chelonia wetransfer com via another file transfer service For an introduction to analysing your data download and read the software guides on the Chelonia web site see nstalling the software on page 9 C POD USER GUIDE 29 9 Maintenance Cleaning Use a scrubbing brush to remove all marine growth and dirt completely Wash and dry the C POD O rings Whenever you open the C POD follow the guidelines below Place the C POD housing on a clean hard surface Look to see if there is any water between the outer and inner O rings when the C POD is opened If an O ring has picked up particles remove it using a blunt tool like the end of a small spoon Carefully clean all surfaces If you are in any doubt about the state of the O rings replace them with new ones A spare set of O rings is supplied with new C PODs Replacements are available from Chelonia Limited O rings must be clean of all contamination especially hairs and grit before you close the C POD Any dirt on the O rings may cause waiter to leak into the C POD housing
25. r at least 4 minutes to ensure that the POD electronics are reset Then reconnect the power and reinsert the SD card Do not simply remove and reinsert the SD card as the POD will not start properly and this may lead to complete data loss C POD USER GUIDE 17 Start the POD a 1 Install the batteries connect power and insert the SD card as described above Make sure that the LED is giving a brief single or double flash every second 2 Make sure that you or someone else is ready to note down the date and exact time 3 Hold down the setup button about 15 seconds before the end of the clock minute the LED stops flashing for 3 seconds and then stays on The C POD now reads the setup file on the SD card this takes about 3 seconds and then the LED lights and stays on until you release the button 4 Release the button exactly on the end of the minute and note the date and exact time The LED flashes briefly a few times and then gives one very short single flash every few seconds The C POD has an accurate timer but no knowledge of the date or time In order to have accurate times and dates in your data you must record the date and time that you start the C POD The C POD starts recording its angle to vertical and the ambient temperature each minute an Tip Write the date and time on a small plastic bag that can be left inside the C POD under the foam in the C POD lid When you retrieve the C POD place the SD c
26. s by recognising the trains of echo location clicks they make to detect their prey orientate and interact C PODs record the time of occurrence centre frequency intensity duration bandwidth and frequency trend of tonal clicks within the frequency range 20 kHz to 160 kHz This allows them to monitor clicks from all odondocetes except sperm whales Digitised sound is not stored The ability of C PODs to accept broadband clicks means that different filter setting are unnecessary making C POD setup very simple logging is very uniform between different C PODs within a project there is an opportunity to integrate data from different projects over wide geographical areas The C POD characteristics settings in use during logging and click data are stored on a Secure Digital SD flash card in the C POD After deployment the data are downloaded from the SD card onto a PC and are then analysed using the supplied C POD PC software The software automatically identifies the presence of cetaceans by detecting the trains of ultrasonic echo location clicks they produce C POD USER GUIDE 5 6 Help and support We offer full email support with our C PODs and will be pleased to help with queries on any aspect of C POD use Your C POD purchase also entitles you to free future software upgrades We offer a range of additional services including data analysis and interpretation You can find more information and the latest so
27. s dependent upon the capacity of the D cells and the acoustic conditions at sea C POD buoyancy varies with total cell weight Using alkaline D cells buoyancy is approximately 0 5 kg with the 8 D cell POD and 0 7 kg with the 10 D cell POD The C POD mooring line is attached near the centre of the POD so that in tidal streams the forces on the upper and lower halves of the C POD are balanced and the greater weight at the lower end keeps the POD vertical To install the batteries 1 Inspect the batteries for damage If the insulation around the outside casing of the battery is damaged it can cause the battery pack to short circuit Either repair it with tape or use a new battery 2 If you are re using batteries check the output voltage of each battery using a voltmeter Use batteries with similar voltages in the same stack 3 Place the C POD on a horizontal surface C POD USER GUIDE 15 4 Slide the cells into the C POD one by one an All the cells should face the same way positive end facing into the C POD 5 Fit the battery pack connector spring as shown below by squeezing the spring gently and passing the loop in the bottom of the spring over the rod Then slide the spring down the rod until it touches the batteries This part fits underneath the screw head This part wraps around the metal rod and rests against the partition These parts fit on the ends of the batteries 6 Adjust the screw
28. sy environment see Calculating the maximum deployment time on page 10 After deployment accidentally disconnected power before writing a summary to the SD card Your data files will not be damaged You can still copy them to your PC using CPOD exe but you will not be able to view summary information first see Downloading your data on page 26 After deployment when removed the SD card the LEDs did not flash PODs before 970 that have not had a firmware upgrade do not flash after the SD card has been removed This is normal The CP1 CP3 file starts at the wrong time The start time was entered in the Read SD page before data was downloaded into the CP1 file However you can add subtract or change the start time in the Files section of the View page in CPOD exe 34 C POD USER GUIDE Yoo AK Chelonia Limited Beach Cottage 5 Beach Terrace Long Rock Penzance TR20 8JE UK Tel 44 0 1736 711034 Fax 44 0 1736 800095 Email team chelonia co uk Web www chelonia co uk Company Registered in UK no 5472768
29. the locked read only position see Secure Digital SD cards on page 8 2 Insert the SD card into the SD card adaptor 3 Insert the adaptor into a USB port on your computer Your PC will detect the SD card automatically and identify it as a removable drive 4 If Windows displays AutoPlay or Scan and Fix options close the windows without selecting any options If you select AutoPlay options Windows writes a file called autorun inf to the SD card that causes data corruption However if you have set the SD card switch to read only the data cannot be corrupted Tip If you think you may have corrupted the data on your SD card please contact us as we may still be able to retrieve the data for you SD cards have a LOCK switch on the side It is strongly recommended that you move the switch to the locked read only position before you insert a card into your PC This ensures that the data files cannot be deleted or corrupted 26 C POD USER GUIDE Running the CPOD EXE software In the CPOD folder 1 Run CPOD exe The main window is displayed 2 To display and hide menu options move the mouse cursor into the blue bar at the top of the CPOD exe window or click in the toolbar to the right of the buttons 3 Display the menu options 4 Click on the Read SD tab Viewing summary data To view a summary of the data of the SD card before it is copied 1 Click the Show summary from DATAO CHE button 2 Locate the SD card
30. ur data on page 26 1 If you have an SD card bag inside the lid with the start date and time on it put the card in it now Remove the battery pack connector spring Remove the silica gel and put it in a moisture proof container Inspect the O rings for damage and replace them if necessary Remove the batteries Check and record the voltage of each battery and which stack they came from D pN Redeploying the C POD immediately You must disconnect the power for at least 4 minutes to ensure that the POD electronics are reset before you redeploy your POD If you want to redeploy the C POD immediately 1 Remove the battery pack connector spring silica gel and batteries 2 If you want to re use the batteries use a voltmeter to check their suitability 3 Insert new batteries or re insert the old ones if they are suitable 4 Insert the battery pack connector spring Observe that the power LED flashes rapidly on and off 5 Check that the SD card tab is in the unlocked read position see Secure Digital SD cards on page 5 6 Insert your spare SD card and press in down quickly but gently to locate it in the holder Observe that the power LED gives either a single or double short flash per second depending on which battery stack is being used a 24 C POD USER GUIDE Any data on the SD card will be overwritten when you start the C POD 7 Insert the silica gel pack between the battery stacks and the
31. with the volume name CHELONIA and open the file DATAO CHE A brief summary of the data is displayed You can use this summary to decide whether to extract the data to your PC now large amounts of data can take a long time to copy or wait until a more suitable time Copying the data ABs To extract data from a C POD SD card 1 On the Read SD page enter the time the POD was started The date and time will be added to the data in the file when it is copied to your PC 2 Enter location and date information that CPOD exe will use to append to the data file name 3 Enter any deployment notes that you want added to the data file 4 To extract the data from the SD card to your PC click Read SD card 5 Locate the SD card select the data file DATAO CHE and click Open A confirmation dialog box is displayed showing the POD number 6 If the POD number is correct click Yes CPOD exe suggests a name for the data file based on the parameters you entered above You can simply accept the default name or change it The date time and location data that you enter below are important do not skip the steps C POD USER GUIDE 27 7 Locate the cpod data folder where you should store your C POD data files and click Save Tip If you save CP1 files in the same folder it s easier to batch process files using the software CPOD exe extracts any data in the CHE files and creates corresponding data files file01 CP1 file02 CP
32. ww chelonia co uk cpod_downloads hitm Tip If your POD fails to start correctly refer to section 10 Troubleshooting on page 32 Closing the C POD The C POD lid is supplied with two O rings The O rings have been lightly lubricated using a PTFE dry lube oil to ensure that the lid tightens smoothly Tip If you want to lubricate the O rings before deployment using a dry lube lubricant minimises wetness and stickiness that might attract dust and grit PODs have a lid with two holes see figure below The larger hole is used for opening and closing the lid using a bar or screwdriver The smaller hole can be used for attaching a security line see Mooring lines on page 12 To close the POD 1 Ensure that the bag for the SD card with the start date and time is placed under the foam in the lid C POD USER GUIDE 19 2 Make sure there are two O rings in place on the lid ii O rings Holes for locking bar and security line Check that the O rings are clean Check particularly that there are no hairs grit or sand trapped beneath the O rings as these could cause damaging leaks 3 Take a silica gel packet out of its moisture proof container and slide it down between the batteries and the POD housing There may be a risk of corrosion if there is no silica gel to keep the humidity low Corrosion may cause power loss or failure of electronic components which may lead to data loss The silica gel pack can b
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