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User Manual - Ocean Networks Canada

1. PRSE MR 2 SPECIFICATIONS aaa Dc A 3 22 assa eD Ar Oria A 3 jnllqjeet A 3 Electrical A 3 Physical CharacteristiCS iori eee Cu Ree DE ue nca Ree A 3 PRINCIPLE OF OPERATION m A 4 CALIBRATION eer Nc A 5 OPERATIONAL SUMMARY essen sana nna n sana uana aa aa an rennuna IEEE RR Rasa eaa A 5 MAJOR COMPONENTS eee nn nana nn nu nan aun ah aa aaa ua IE RR IEEE A 6 LE GUI m A 6 Connector End c A 8 A 8 Non isolated Input Power 22020 enne nn
2. 7 List command S K 7 COMIMANAS HR K 8 K 8 Download P K 8 EraS COMMANOS EM K 8 INFO MON K 9 IE pM K 9 DISK a otn K 9 gie dil io EEPE E 9 Pixel to Wavelength natia ane a ara en aa apis K 9 Lamp On Time K 9 DAG Men K 9 Reboot command mm K 9 UL CEBIT K 10 Checking instrument values K 10 Setting up for Scheduled K 10 Setting up for Continuous Deployment esee cesses K 10 L APPENDIX USING WINDOWS HYPERTERMINAL eere L 1 M DOCUMENT CHANGE M 1 REVISION A TE EE ee M 1 Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page v SYSTEM SATLANTIC MBARI ISUS V3 ee SECTION TABLE OF FIGURES Figure 1 The MBARI ISUS with Rechargeable Battery A 1
3. RARE 2 DATA LOGGING AND PROCESSING ee eene nennen nnn nana haha aa aa aa ERR RR ennnen 2 TELEMETRY ACQUISITION USING SATVIEW ssssssssscseccecnsccnsnsnnnsacesensnsnnnacsecenensusnsnaaanssnsnnsnsaasaasssens C 3 TELEMETRY ACQUISITION WITH A SEABIRD C 4 DEPLOYMENT EXAMPLE vcsiessiastecvavscsivascacvesseciudavsvetconcuneatsaccececntdassdsnasretccatbatedsresbtacbuseatvcsresncedeat C 5 D OPERATION nna cae aa ua sss D 1 OPERATING MODES D 1 D 1 gc lee E D 1 EIS trn D 1 D 3 Uil D 3 FRAME MO DE S D 4 COMMUNICATING WITH THE IGUG ccccscsssnsssnsccnencnscnsneccnensnsnsnuaaansacecnsnsnsensansenseansnananaaesecnsnsnsnssans D 7 Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page iii SYSTEM SATEINEN MBARI ISUS V3 SECTION TABLE OF CONTENTS A NOTE ABOUT POWER REMO
4. SYSTEM SATLANTIC MBARI ISUS V3 1 SECTION Manual D OPERATION Benchtop Triggered After a scheduling deployment the message and error log files should be consulted Problems occurring during operation are recorded in these files Benchtop mode is basically identical to scheduled mode The only difference is that the instrument assumes that the power supply will be steady and thus waive some precautionary measures When operating in Benchtop mode the instrument acquisition must be interrupted and the instrument must be in the user interface menu before power can be disconnected Triggered mode brings the instrument after initialization into a low power sleep mode An external controller can trigger an acquisition by first sending an arbitrary character and then the character g for go over the serial RS 232 line There must be a time delay between the first and second character of between 1 and 4 seconds The ISUS instrument will wake up and acquire data The acquisition can be terminated by either sending a termination key character s for stop or by choosing a fixed time for each acquisition Triggered mode is similar to scheduled mode in that the instrument will acquire data intermittently Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page D 3 SYSTEM SATLANTIC MBARI ISUS V3 SECTION D OPERAT
5. sese F 3 Figure F 3 Overlap the cloth over a 4 Figure F 4 meer a plastics Dii si oco teret Tu RR F 4 Figure F 5 Start positioning the copper screen eee F 5 Figure F 6 Slide the copper screen in F 5 Figure F 7 Attach the end F 6 Figure F 8 Check for scribe F 6 Figure F 9 Mounting the F 7 Figure F 10 The ISUS with Biofouling F 7 Figure L 1 Add Remove L 2 Figure L 2 HyperTerminal Connection Description sese L 3 Figure L 3 HyperTerminal Connect To dialog box L 3 Figure L 4 Serial Port Properties dialog L 4 Figure L 5 Connection Properties dialog L 5 Figure L 6 ASCII Setup dialog L 6 Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page vi SYSTEM SATLANTIC MBARI ISUS V3 SECTION Operation Manual A OVERVIEW A OVERVIEW Purpose The MBARI In Situ Ultraviolet Spectrop
6. G 1 CONTACT INFORMATION 4 H 1 enyyye H 1 IDA Fem 1 H 1 APPENDIX A SCHEDULE FILE nunne nunne nnmnnn nnen 1 1 APPENDIX INTERFACING THE ISUS TO A SEABIRD CTD PROFILER J 1 APPENDIX SERIAL COMMUNICATION K 8 MENUS Le TEE K 8 enn cudl K 8 K 2 Deployment 2 Port Configuration 2 SHOW 2 EIE Jm kaS K 2 Output Setup Men EET K 3 5 K 3 Transter Frame MOOG seas ET K 3 LOGGING OF Frames to Fil ii eria ot ee ERR Ue FERE NER EA ERR LERRA A K 3 Log File
7. Dew x ES eal ui 9 Data Sensor Calibrated Values Isus 101 DATEFIELD 4 saTNDFO101 Logging Status Ready Active TIMEFIELD HH hhhhhh SATNLFO10 NTR_CONC Netlog TINT CELCIUS Fea Rane ms T SPEC CELCIUS EELE vorne T_LAMP CELCIUS For Help press 1 LAMP TIME sec HUMIDITY VOLT_12 5 Counts 19151 151 53 192 38 ANTE 193 16 193 95 194 74 195 52 196 31 197 10 Ultraviolet Lamp Spectra Absolute 265 310 Wavelength Figure 1 SatView real time display Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page C 8 SYSTEM SATLANTIC MBARI ISUS V3 SECTION C START UP Telemetry Acquisition with a Seabird CTD The ISUS has been extensively tested with the SeaBird series of CTD profilers It is easy to integrate the analog output of the ISUS with one of the CTDs ancillary inputs For complete details please refer Appendix J entitled Interfacing the ISUS to a SeaBird CTD Profiler Below is a screen shot from SeaBird s SeaSave software highlighting the detailed vertical resolution available when the ISUS is used in its profilin
8. SECTION D OPERATION 16 30 00 Power 1 SUS 16 30 45 Acquire 30 15 5 16 31 20 Power I SUS The file follows Satlantic s schedule file format which can be used to schedule multiple instruments Here only one instrument ISUS is scheduled Each acquisition event must contain the three above commands i e powering up the ISUS indicated by the in the first command acquiring data over a period of time here 30 seconds and finally powering off the instrument indicated by the the last command A detailed description of the schedule file is provided in the appendix in section l More generally the scheduling event follows a simple three state model the instrument is either OFF ON or ACQUIRING Initially the instrument is in the OFF state The instrument transitions from one state into another state are triggered by the above commands ACQUIRING Power Switch to ON Ignore Ignore Power Ignore Switch to OFF Switch to OFF Acquire Ignore Switch to Acquiring Increment acquisition period After Sec Ignore Ignore Switch to ON When operating the instrument some additional considerations apply First of all there is a slightly variable time lag between the Power On command and the readiness of the instrument Thus sufficient time should be given normally 25 seconds are enough Secondly the instrument lamp needs some time to stabilize To ensure data is acquired with the same la
9. SATLANTIC MBARI ISUS V3 SECTION K SERIAL COMMUNICATION INTERFACE Fitting Setup Menu Fitting Range The Fitting Setup Menu provides access to parameters affecting the instrument internal processing of the measured spectrum into the concentrations of the chemical species An alternative to adjusting the fitting parameters on the instrument is to collect the complete spectra full frames and then re process the data in the ISUSPro application which also offers adjustable processing parameters The fitting parameters are utilized in conjunction with the extinction coefficients as provided in the extinction coefficient CAL file Extinction coefficients for nitrate and artificial seawater of have been determined at Satlantic as well as a coefficient adjusting for temperature change Changing any of the fitting parameters may compromise the performance of the instrument Change any of these settings only after consultation with a Satlantic representative The fitting range defines the wavelength range over which measurements are used for estimating the concentration s The instrument supports a contiguous wavelength range which defaults to 217 5 nm to 240 nm The best fitting range depends on the type of water the instrument is used in The nominal fitting range is appropriate for both freshwater and seawater with moderate amounts of secondary absorbers e g dissolved organic matter or particulate matter In very cle
10. US Otherwise it is rarely necessary to load new files onto the instrument Exceptions are revised extinction coefficient files UE after a re calibration of the instrument Also in the future Satlantic may release updated versions of the instrument firmware which the user can then upload onto the instrument UP When uploading new firmware onto the instrument special caution has to be taken to ensure that power is not lost during this procedure Otherwise the Instrument can become inoperational File transfers to the instrument employ the XMODEM protocol Thus after initiating an upload command the host computer must transmit the desired file using that protocol The HyperTerm terminal emulator see Appendix Using Windows HyperTerminaL has built in commands Send File for this purpose Download commands It is possible to download extinction coefficient DE log files DL and data files DD DAD Downloading coefficient and log files is usually only necessary for trouble shooting In some instances Satlantic personnel may ask for the instrument message or error log to better identify the instrument status In normal operation downloading of data files is the most common action It is possible to download a single file DD or to download all data files DAD After a file has been downloaded and a successful transfer has been confirmed it may be useful to erase the file on flash disk to make space for future data acquisit
11. density sigma theta ka m 3 Select Variable Dec Digits Row 4 voltage number 0 V Select Variable Dec Digits Row 5 voltage number 1 V Select Variable Dec Digits Row 6 parae at M Select Variable Dec Digits Row 7 userpoly 1 Select m Dec Digits Row 8 pm Select Variable Dec Digits E 9 none Select Variable Dec Digits Row tt10 none Select Variable Dec Digits B Row 11 none Select Variable Dec Digits B Row 12 none Select Variable DecDigis 3 Row 13 none Select Variable Dec Digits 3 Row 14 none Select Variable Dec Digits Row 15 I XN Select Variable Digits 3 Row 16 none Select Variable Dec Digits 3 Row tt17 none Select m Dec Digits 3 Row 18 none Select Variable Dec Digits 3 Row 19 none Select m DecDigis Cancel 26 Click OK to close the Fixed Display Variables set up window 27 From the Display Setup window click the Save Display DSF File button Give it a name such as ISUS DSF 28 In the main SeaSave window place and size the fixed display window as desired 29 From the main window click RealTimeData Start Acquisition The following dialog box will be displayed F s Opto Confgaenon OIW Ede mne wind con D ats Options On Dik Dutout ots DAT MEX Dupe Fia
12. generate minimal output voltage on both DACs normally 2000 counts by going to the Tools and DAC Calibration menu option in ISUSCom and clicking Low This ensures a small positive offset voltage Refer to the Seasave program Record the voltage displayed for voltage number 0 Call this voltage Vo This number should be just over OV For our system it is 0 036630 V Record the voltage displayed for voltage number 1 Call this voltage Vi This number should be just over OV For our system it is 0 036630 V Next generate maximal output voltage at both DACs normally 64000 counts by clicking High in the DAC Calibration window of ISUSCom Refer again to the SeaSave program Record the voltage displayed for voltage number 0 Call this voltage Voy This number should be less than 4V For our system it is 3 908425 V Record the voltage displayed for voltage number 1 Call this voltage This number should be less than 4V For our system it is 3 912088 V Close the DAC Calibration window in ISUSCom Now we calculate the 0 and coefficients for SeaSave using the linear Concentration Al V 0 relation For nitrate voltage 0 the and 0 coefficients are 1 max min Vot AOnos min Aluos Vor NO3 max is the maximum allowed nitrate concentration the default value is 100 uM is the minimum allowed nitrate concentration the default v
13. 1 stop bit and no flow control These settings can be modified at a later time Pressing OK will cause HyperTerm to connect to the selected port using the settings provided Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page L 4 SATLANTIC on Manual SYSTEM MBARI ISUS V3 SECTION L USING HYPERTERM Before using the connection it may be useful to adjust the emulation settings the behavior of the terminal window In order to do so it is necessary to first disconnect HyperTerm from the serial port using the Disconnect selection under the Call menu The connection can be re established via the Connect command in the Call menu HyperTerminal s settings are available via the File menu under Properties The Settings tab provides access as shown below COM Direct Properties Connect To Settings r Function arrow and ctrl keys act as Terminal keys Windows keys m Backspace key sends Del Space Emulation eiae Telnet terminal ID Backscroll buffer lines 500 ANSI Play sound when connecting or disconnecting Input Translation ASCII Setup Figure L 5 Connection Properties dialog box In the Emulation dropdown box ANSI should be the connection s terminal emulation mode The other settings of the dialog box should be set as
14. Figure 2 Primary UV Absorbing Species in Seawater sss 4 Figure 3 Seawater Sample A 5 Figure 4 The MBARI ISUS V3 Anodized Aluminum A 7 Figure 5 Connector End Cap A 8 Figure 6 MCBH2M Bulkhead Male Face nennen A 8 Figure A 7 MCBH6M Bulkhead Male Face A 9 Figure A 8 Bulkhead Female Face A 9 Figure 9 MCBH8M Bulkhead Male Face A 10 Figure A 10 Probe 22 eite re tere dite eet o m docete ete ze A 11 Figure A 11 Probe Guards Eu DL A 11 Figure A 12 Reflection Probe eee rete tei Ll teri tinet tede tre E cut A 12 Figure A 13 Standard Probe Guard A 12 Figure A 14 Biofouling Guard A 13 Figure C 1 SatView real time display sse C 3 Figure C 2 SeaBird SeaSave screen C 4 Figure C 3 ISUS and Battery Pack esses eene C 5 Figure 1 Biofouling Guard Components sse F 2 Figure 2 Biofouling Guard Exploded Assembly
15. and restart it Deployment Counter The deployment counter determines the next file name to use for internal logging of data DI VEnnn DAT where nnn is the deployment counter If a file by that name already exists the data will be appended The counter is incremented from deployment to deployment and will be reset to 1 upon reaching a maximum value of 999 It is possible to set the counter to any value in the 1 999 range Port Configuration Submenu The Port Configuration Submenu is used to define the communication between the ISUS X and external instruments that are controlled by the ISUS It is identified by the 1 SUS PORT CONFI gt prompt The ISUS X can connect to up to four serial and up to two analog instruments The serial instruments use ports 1 4 the analog instruments ports 5 and 6 Show port configurations For all configured ports the communication settings are printed e g Port 2 enabled BR 19200 DB 8 Prty N FrameSynczHDR FrmLenz24 Output SATSP2 Timestamp Data Startup none Shutdown STOP Setup Menu The Setup Menu provides access to operational parameters It is identified by the 1505 SETUP prompt When viewing a setup parameter a typical response is ISUS deployment mode SCHEDULED CONTINUOUS OpMode CONTINUOUS Note Change takes only effect after restart Modify N The first line gives the name of the selected parameter and the possible values it may take The second line spec
16. be necessary to rely on the comma delimiters to distinguish data fields In BINARY frames separate fields are of a fixed length and therefore do not require delimiters This and the BINARY inherent compact representation of data leads to a reduction of the frame size by a factor of nearly 3 BINARY frames have to be converted to ASCII e g using SatCon data for further processing The following table lists all fields occurring in ISUS frames and explains their meaning The format of the fields and their size are given first for ASCII frames then for BINARY frames Occurring formats are ASCII Integer Al ASCII Float AF ASCII String AS Binary Signed Integer BS Binary Unsigned Integer BU Binary Float BF and Binary double precision float BD Binary fields have fixed sizes ASCII fields may have fixed or variable sizes Please refer to the Satlantic Data Format Standard for more details on these data types 5 For more information on Satlantic telemetry format refer to the Instrument File Standard document available from Satlantic Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page D 4 SYSTEM MBARI ISUS V3 SECTION D OPERATION Field Name Format Description NSTRUMENT AS 10 The frame header or synchronization string starts with SAT for AS 10 a Satlantic instrument followed by three characters identifying the frame type The la
17. best after reaching a minimum temperature The warm up period is initially set to 5 seconds When the lamp ages and the instrument generates log messages about problems to turn on the lamp a warm up period of 10 to 15 seconds may become necessary Normally this setting should not be changed This setting should only be adjusted after consultation with a Satlantic representative Reference Diode The reference diode serves as an indicator for lamp output When turning on the lamp a minimum required intensity initially set to 4000 counts is required for the lamp to be considered on Otherwise the instrument considers the lamp to be off and tries to re ignite the lamp For an aging lamp that looses its intensity it may be necessary to reduce the number of counts The value should never be changed to too low a value as the instrument may operate with the lamp turned off After changing the reference count value the instrument should be thoroughly tested to confirm it operates properly During instrument operation the reference diode serves as an average performance monitor for the lamp In order to achieve stable data a number of samples are averaged during each data acquisition The user may change this value This setting should only be adjusted after consultation with a Satlantic representative Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page K 5 SYSTEM
18. can easily increase the internal temperature of the instrument beyond its maximum rating y not leave an in water instrument unattended Boat drift can entangle the cable and cause damage or instrument loss Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page B 1 SYSTEM MBARI ISUS V3 SECTION B SAFETY amp HAZARDS Cable y Connections y y Troubleshooting y Recovery y y To prevent damage to the conductors within the Kevlar strength member if present ensure that the cables are not pinched or bent to a radius of less than 18 cm Handle electrical terminations carefully as they are not designed to withstand strain Disconnect the cables from the components by pulling on the connector heads and not the cables Do not twist the connector while pulling as this will damage the connector pins Do not use petroleum based lubricants Subconn amp connectors Connectors should be free of dirt and lightly lubricated before mating Satlantic recommends using DC 111 silicone grease made by Dow Corning on the male pins prior to connection While checking voltages with a multimeter use extreme care to avoid shorting the probe leads A shorted power supply or battery can output many amperes of current potentially harming the user starting fires or damaging equipment Remember never to grab the electrical portion of the instrument cable during rec
19. in Scheduled Mode iudicis e etta ra sid K 4 Nitrate and Auxiliary DAC K 4 Deployment Setup K 4 ISUS Deployment K 4 Initial Delay CONTI NOUS K 4 Fixed Operational Time aiiis ie s EE RATE ego e K 4 Spectrometer Setup Meri dice nuo ordre en reci iei K 4 Inegrat n PONOG RN K 5 Collection cM MEE K 5 Spectrometer Coefficients 5 Lisa e Da Ta e d Lo aa K 5 Lamp Setup E K 5 Power On Warm up 9 siis K 5 FRCTOFONCE Doro SX K 5 Fitting MON R K 6 id ale tees gee eee ec K 6 Baseline Orders PEE K 6 Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page iv SYSTEM SATEINEN MBARI ISUS V3 SECTION TABLE OF CONTENTS Seawater Dark Samples sess siiis esee enne enne K 6 Menu
20. non battery based power backup circuit is used which provides power to the controller long enough for the flash log files to be safely closed After all safety procedures have been completed a message is sent via RS 232 port Power Failure reached safe state This message may not arrive if there is insufficient power remaining after shutdown However an instrument internal recording is made and queried upon the following power up If the ISUS did not manage to safely shut down a warning message will be displayed and recorded to log file If this message is noticed Satlantic should be contacted If possible it is advisable to be cautious and stop logging before removing power Simply entering the Root Menu before removing power is a safe procedure If the instrument is operating in Benchtop mode this procedure is required Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page D 7 SYSTEM SATLANTIC MBARI ISUS V3 SECTION E RECOVERY E RECOVERY To recover the MBARI ISUS V3 terminate data logging by issuing the stop command the S key when in continuous mode Then simply remove the power connection disconnect all cables and replace all dummy connectors When disconnecting a cable from the instrument unscrew the locking sleeve grasp firmly on the connector head and pull off the cable Do not twist or pull on the cable directly as this may damage th
21. not the same recheck the power supply cable connections If the voltages are still not the same the cable is likely broken and will need repair A wire break can be confirmed with a continuity check Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page F 9 SYSTEM SATLANTIC MBARI ISUS V3 SECTION jn Manual F MAINTENANCE If the voltage is within tolerance connect the power supply cable to the ISUS Again measure the voltage at the power supply terminals The voltage should remain approximately the same as before although there may be a small voltage drop when using a battery battery voltage drops under load If there is a significant voltage drop disconnect the power immediately and check for shorts in the cable Check Cable Continuity Often system problems can be traced to cable breaks or shorts Usually these cable failures are a result of improper handling or storage Cable continuity can be checked as outlined below Make sure all cables are completely disconnected before performing this test Procedure 1 Set the multimeter to measure continuity The resistance measurement setting can also be used 2 Check for continuity by measuring from pin 1 on one end of the cable to pin 1 on the other end The meter should confirm that the connection is continuous by either giving an audible signal or measuring a low resistance If there is not con
22. sensor type from the drop down list Set the external voltage channels to 2 Select the CTD firmware version Set the number of 0 5 second intervals this depends on the CTD settings Double click on the Temperature field in the Sensor list Enter or verify the calibration coefficients then click ok Double click on the Conductivity field and enter or verify the calibration coefficients Click OK Double click on the Pressure field and again enter the calibration coeffiecients Do not enter any information in the User Polynomial and User Polynomial 2 fields we still have to determine these coefficients The display will be similar to that shown below Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page J 2 SYSTEM SATLANTIC MBARI ISUS V3 SECTION J INTERFACING TO A SEABIRD CTD Configuration for the SBE 19 Seacat CTD x ASCII file opened test con Pressure sensor type Strain Gauge voltage channels 5 Firmware version Version 30 0 5 second intervals fi Surface PAR voltage added NMEA position data added Channel Sensor New 1 Frequency 0 Open 2 Frequency 1 Conductivity 3 Voltage 0 User Polynomial Save 4 Voltage 1 User Polynomial 2 M Save 5 Pressure voltage Pressure Strain Gauge Savea Modify Report Help Canc
23. sources Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page A 5 SYSTEM SATLANTIC MBARI ISUS V3 SECTION A OVERVIEW Major Components The major components of the MBARI ISUS V3 are the instrument body the connector end cap the probe end cap and the external power source A computer with a free RS 232 serial port or a free USB port with a USB to RS 232 converter is required for configuration and to offload data Please note that in this manual the term RS 232 implies EIA 232 Instrument Body The MBARI ISUS V3 housing is a standard Satlantic pressure case design consisting of a corrosion resistant anodized aluminum tube with two anodized aluminum end caps see Figure A 4 Revision Document Number SAT DN 425 Copyright O 2007 by Satlantic Page A 6 SYSTEM MBARI ISUS V3 SATLAWTIC Aree SA al ereuon Manua SECTION A OVERVIEW 2 Y 1 NOTES 1 MATERIAL IS BLACK ANODIZED ALUMINUM ENDCAPS amp HOUSING 2 WEIGHT WITH BIOFOULING GUARD IN AIR IS 5 1 Kgs 11 2 Ibs 6 4 mm 54 0 mm 2 13 in 0 25 in 72 4 mm 2 85 in B Erm ag gt 8 go q E A 114 3 50 in STANDARD GUARD VIEW UM FSR SFO F TITLE ISUS V2 ASSEMBLY 5 T L T C CIMENSIONS TET WE a NO SAT NO RE
24. 5 gt menu which provides access various instrument status functions Setting up for Scheduled Deployment In order to set up the ISUS into SCHEDULED operation mode the operator must first enter the menu system To switch into SCHEDULED mode the operator must enter the Setup Menu and in it the Deployment Setup Menu The Operational Mode must be changed to SCHEDULED and on the next power up the instrument will be in SCHEDULED mode Leave the SUS_SETUP_DEPLOY gt menu using the 0 command and then the 1505 SETUP menu also using the 0 command Confirm that the settings should be stored to be ready at next power up You should now be in the SUS root menu Now confirm the current schedule as specified in the on board SCHEDULE TXT For this purpose use the F command to enter the 505 FI LE menu The 5 Output Schedule command will print the current schedule to the terminal window In order to change the current schedule use the US Upload Schedule command to load another SCHEDULE TXT file onto the instrument The format of the schedule file is defined in I Appendix A Schedule File Example In order to enter SCHEDULED mode remove power from the instrument wait 1 minute return power and monitor the instrument output One of the initial output messages contains its current operational mode and should be SCEHDULED Shortly thereafter a message detailing the next scheduled event will be dis
25. ARI ISUS V3 SECTION Operation Manual F MAINTENANCE Procedure 1 Ensure that the two 43x3 mm 05 are installed They are located at the top and the bottom of the biofouling guard base 2 Wrap the Nitex filter cloth screen around the base Ensure that the screen overlaps itself over any one of the three vertical shim grooves 1 Figure F 3 Overlap the cloth over a groove 3 Wedge a plastic shim into the groove in the base where the filter cloth overlaps Figure F 4 Insert a plastic shim Revision Document Number SAT DN 425 Copyright O 2007 by Satlantic Page F 4 SATI NTIC MBARI ISUS V3 Operation Manual F MAINTENANCE SYSTEM SECTION 5 6 While holding the plastic shim in place begin to slide the copper screen over the filter cloth as shown The shim should be beneath a solid portion of the copper screen no holes Try to align the scribe marks on the base and copper screen Important Ensure that the cloth does not wrinkle significantly as the copper is positioned This may take several attempts as it is a relatively delicate procedure Figure F 5 Start positioning the copper screen Insert the other two plastic shims into the remaining grooves Carefully slide the copper screen entirely over the Nitex and plastic shims This will be a tight fit Again ensure that the cloth does not wrinkle as the copper
26. An arbitrary key interrupts suspension in SCHEDULED mode after which the M key key will bring the instrument into the root menu The root menu gives access to the configuration setup file and info menus In any menu simply type H Ent er to display the list of available commands To exit the current menu press Q Enter The menu interface does not distinguish between upper and lower case letters Each menu has a distinct prompt indicating which menu you are currently in For instance the prompt for the main menu is SUS gt The menus serve a number of purposes to view and optionally modify a current instrument setting or to move data to or from the instrument Configuration Menu The Configuration Menu provides access to basic instrument settings It is identified by the 505 CONFI G gt prompt Commands are S how Configuration audrate D eployment Counter A typical configuration is Instrument type I SUS Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page K 8 SYSTEM SATLANTIC MBARI ISUS V3 SECTION K SERIAL COMMUNICATION INTERFACE Baudrate Serial No 101 Baudrate 38400 Deployment Cntr 16 Only the baud rate and the deployment counter can be modified The data rate for the telemetry channel may be one of 9600 19200 or 38400 bps To operate at a new baud rate it is necessary to remove power from the instrument
27. C MBARI ISUS V3 SECTION on Manual M DOCUMENT CHANGE HISTORY M Document Change History Revision A Initial revision based on ISUS V2 manual Revision A is valid for Firmware version 3 0 Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page M 1
28. FACE Info Menu Build Info Disk Info Clock Info new extinction coefficient file is to be uploaded Message and error log files should be monitored and cleared periodically Erasing data files is more important Data files can become quite large Depending on the size of the flash disk and the output settings a continuous operation of approximately 50 hours may cause the flash disk to fill Thus for operations of higher duration instruments with an increased flash disk size should be used alternatively binary frame output is more compact Warning Erased files cannot be retrieved The Info Menu provides information about the state of the instrument It is identified by the SUS NFO gt prompt The currently installed version of the instrument firmware i e the program currently running is displayed The currently installed operating system version and disk usage are displayed The current system time is given The instrument does know about time zones all times are considered to be UTC GMT times It is possible to set the clock at this menu point Pixel to Wavelength For a selected spectrometer channel the wavelength is printed Lamp On Time Odometer DAC menu The instrument maintains a lamp use timer The lamp is rated at a lifetime of approximately 1000 hours and the user may consider replacing an old lamp prior to a lengthy deployment Do not clear this timer The ISUS instrument generates an
29. ION Frame Output Modes The frame format for the ISUS as with all Satlantic instrumentation follows the Satlantic Data Format Standard This standard defines how Satlantic frames are composed and interpreted For every sample taken the instrument will compose one frame of data save this frame to flash disk and transmit it via serial telemetry The information contained in the frame will depend on the frame output mode of the instrument The instrument s telemetry definition file also called calibration file defines the format of the frame Three frame output modes are available in the ISUS Concentration ASCII Full ASCII default and Full BINARY Full mode provides all available information to the user at the expense of increased frame and log file size Concentration mode provides a greatly reduced frame containing only a timestamp the nitrate concentration and auxiliary fitting results as calculated by the ISUS The frame format for each mode is given in the table below Please note that either frame output mode may be used regardless of the operation mode of the instrument For ASCII frames separate fields are comma delimited The frame size may vary but a maximum size of each field is given Satlantic s data logging software SatView supports such variable length frames and as such the size of each field may change without affecting the calibration file If integrating the ISUS with foreign data logging devices it will
30. SATLANTIC MBARI ISUS V3 Operation Manual Document Number SAT DN 425 Revision A 1 May 2007 For use with MBARI ISUS V3 running firmware rev 3 0 M Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page i SATLANTIC Operation Manual for MBARI ISUS V3 Document Number SAT DN 425 Prepared by Satlantic Incorporated Richmond Terminal Pier 9 3481 North Marginal Road Halifax Nova Scotia Canada B3K 5X8 Tel 902 492 4780 Fax 902 492 4781 Copyright 2007 by Satlantic This document contains information proprietary to Satlantic or to a third party to which Satlantic may have legal obligation to protect such information from unauthorized disclosure use or duplication Any disclosure use or duplication of this document in whole or in part or of any of the information contained herein for any purpose other than the specific purpose for which it was disclosed is expressly prohibited except as Satlantic may otherwise agree to in writing Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page ii SYSTEM SATEINEN MBARI ISUS V3 SECTION TABLE OF CONTENTS OVERVIEW PE A 1 1 E A 1 2 FEATURES
31. SCII Full Frame 1694 bytes maximum Binary Full Frame 605 bytes fixed For a flash disk size of 256 MB this translates to approximately 4 500 000 ASCII Concentration frames 155 000 ASCII Full frames or 440 000 Binary Full frames With an acquisition rate of one frame per second an acquisition period of 52 days ASCII Concentration frame 43 5 hours ASCII Full frame or 122 hours Binary Full frame can be stored on the flash disk Larger disk sizes are available upon request The instrument is normally configured to periodically generate dark spectra to correct for thermal noise This is achieved by closing an on board shutter over the UV light source before sampling To distinguish between Light and Dark frames the instrument uses different frame headers This allows any telemetry acquisition system to distinguish between sensor readings taken with the shutter opened and closed The different frames are distinguished by their header string following the three letter SAT identifier is a three letter frame identifier The first letter is for ISUS frames always a N indicating that the ISUS is an Nitrate measuring instrument The second letter indicates the shutter state of that frame L for Light frame D for Dark frame and the third letter indicates the frame type for ASCII Concentration Frame F for ASCII Full Frame and 8 for Binary Full Frame Frame Header Explanation of frame header SATNLC SATl
32. This is the nitrate voltage as measured by the CTD LIIS x ap n poteri eripe due aom pian scan number 4 sound velocity conducted y spesciic volume anomaly storing data gt hme userpol 0 userpoly 1 voltage D 22 On another unused row click Select Variable From the drop down list select voltage 1 Display 6 decimal places This is the auxiliary voltage as measured by the CTD 23 On the next unused row click Select Variable Select userpoly 0 Display 3 decimal places This will eventually display the calculated nitrate concentration 24 On the next unused row click Select Variable Select userpoly 1 Display 3 decimal places This will eventually display the calculated auxiliary value 25 On the next unused row click Select Variable Select time gt seconds One decimal place is sufficient Your window should look similar to the following Revision Document Number SAT DN 425 Copyright O 2007 by Satlantic Page J 4 SYSTEM SATLANTIC MBARI ISUS V3 SECTION Operation Manual J INTERFACING TO A SEABIRD CTD Fixed Display Variables Set Up T Row 0 pressure db Select Variable Dec Digits Row 1 temperature 175 90 deg C Select Variable Dec Digits Row 2 a O Select Variable Dec Digits Row 3
33. V SCALE d xd M950114A IDW SH Ea BY DONALD MACPHERSON cHECK 224 2005 SHEET 1 OF 1 1 RI AK LL CD OREN Figure A 4 The MBARI ISUS V3 Anodized Aluminum Body Copyright 2007 by Satlantic Page A 7 Document Number SAT DN 425 Revision A 1 SYSTEM ANTIC MBARI ISUS V3 SECTION A OVERVIEW Connector End Cap Connectors The bottom end cap contains a zinc sacrificial anode and four bulkhead connectors The pin out and function of each connector is described in the following sections Normally all of the connectors are Subconn series Please consult Satlantic if you require a custom interface USB Telemetry and Power Isolated Power and Telemetrv Port Sacrificial Anode Non isolated Input Power Isolated Analog Output Figure A 5 Connector End Cap View Non isolated Input Power Port This connector is used to provide power to the instrument typically from a battery pack or a bench top power supply for laboratory use IN 2 gt 1 Figure 6 MCBH2M Bulkhead Male Face View Pin Name Description VBATT Input Power 6 18 VDC VBATT GND Power common Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page A 8 SYSTEM SATLANTIC MBARI ISUS V3 f SECTION on Manual A OVERVIEW Isolated Power and Telemetry Port T
34. VAL cscccccccncccacsccnccncsenansneccnscansnananannnannnaanaananscasananananananaasaaaaaaaaaaaes D 7 RECOVERY uc E 1 MAINTENANCE 2 warn seh F 1 PREVENTATIVE MAINTENANCE eee nennen nn nnn nara ran nean nana nasa aaa RR Ra RR RR uaa Ra Ru an NN NN RR RENS ERES Ra Rana S F 1 Gleaming the Probe ssi F 1 Assembling the Biofouling Guard F 2 E 4 TROUBLESHOOTING USING A TERMINAL EMULATOR eee ee en F 8 TROUBLESHOOTING FOR HARDWARE PROBLEMS ee ee enn n unn annua nn nu au uuu aua na F 9 Check Connections exe F 9 e UE eid Eier eie 9 eure Xen F 10 Ge P Lnneaghgue c G 1 gt pou UR S RD G 1 RESTRICTIONS ee i G 1 PROVISIONS ditties Sein ee a ee ee G 1 RETURNS se ee ee 1 LIABILITY doa
35. ackground the instrument is ready for communication For a full description of the various ISUSCom functions please refer to the ISUSCom User Manual or view the online help menus Every 1508 instrument is shipped from Satlantic in the Continuous operational mode with the full internal logging option turned on Prior to deployment or testing the ISUS operational mode CONTI NUOUS FI XEDTI ME TRI GGERED SCHEDULED and BENCHTOP may be reconfigured and data logging options may be adjusted according to the deployment setup Three data collection modes can be used independently internal digital logging real time digital transmission and real time analog transmission Full internal logging provides data backup and is also useful for future re processing of data It is recommended to test a new instrument configuration before deployment To acquire data with the instrument a suitable power source is required During testing ISUSCom will graphically display the acquired data and also print messages generated by the ISUS For computers without USB ports the serial port on the 6 pin connector provides an interface to a menu system see Appendix K All of ISUSCom s essential functions are accessible through the menu system On the computer side any terminal emulator see Appendix L for an example can provide a user interface Connecting the Cables In preparation for assembly the ISUS components should be checked against the packing li
36. alog output of the measured nitrate and auxiliary fitting data see the paragraph on Isolated Analog Output The output voltage is a linear transformation of the measured data and the linear relationship can be determined by utilizing the DAC menu functions For a detailed description see J Appendix Interfacing the ISUS to a Seabird CTD Profiler Reboot command After changing the deployment mode the instrument has to restart The easiest way is to reboot the system alternatively power can be removed and re applied Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page K 9 SYSTEM SATLANTIC MBARI ISUS V3 SECTION K SERIAL COMMUNICATION INTERFACE Using the Menus Checking instrument values When turned on the instrument will first send messages over its serial communication port Then it waits for the operator to sent an interrupt M key for entering the menu If no interrupt is received the normal mode of operation data acquisition will begin CONT NUOUS mode or operation may be suspended to resume up at a later time SCHEDULED mode The S key interrupts CONTI NUOUS mode and a subsequent key will bring the instrument into the menu An arbitrary key interrupts suspension in SCHEDULED mode after which again the M key key will bring the instrument into the menu From here the 1 key will bring the instrument into the 150
37. alue is 5 uM to allow for small negative offsets in the nitrate calculation The above values give Alnos 27 093572 and 5 992438 Similarly for auxiliary voltage 1 the and 0 coefficients are 1 Auxiliary AUXILIARY max AUXILIARY min Vit AO Auxiliary AUXILIARY min 1 Auxiliary Vit Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page J 6 SYSTEM SATLANTIC MBARI ISUS V3 SECTION J INTERFACING TO A SEABIRD CTD AUXILIARY max is the maximum allowed auxiliary value the default value is 50 AUXILIARY min is the minimum allowed auxiliary value the default value is 5 The above values give 1 14 191871 and 5 519848 The exact values for a specific instrument may vary slightly Now that we have our coefficients we need to enter them in out SeaSave program In SeaSave click RealTimeData gt Stop Acquisition T 2 Turn off the CTD s magnetic switch From the Configure menu select New Style Instrument Configuration gt Modify Selected Instrument Configuration File Compre Help ra ASCII Header Form Merk Selection Remote Water Sarepler Configuration Old Style Instrument Configuration Select Inetrurnrt ebon Create Mew Ir
38. antic Nitrate Light Concentration frame SATNDC SATlantic Nitrate Dark Concentration frame SATNLF SATlantic Nitrate Light Full ASCII frame SATNDF SATlantic Nitrate Dark Full ASCII frame SATNLB SATlantic Nitrate Light full Binary frame SATNDB SATlantic Nitrate Dark full Binary frame Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page D 6 SYSTEM SATLANTIC MBARI ISUS V3 SECTION D OPERATION Communicating with the ISUS The operator can communicate with the ISUS via either USB utilizing ISUSCom or its serial communication interface SCI utilizing a terminal emulator The full USB capabilities in conjunction with ISUSCom are available only in version 3 instruments whereas the SCI had been available in previous ISUS versions For configuration and data download using the ISUSCom application over USB is recommended Refer to the ISUSCom User Manual for details The SCI interface is identical to the interface available in previous ISUS versions and described in Appendix K A Note About Power Removal Most data loggers that utilize flash disks for data storage require a shutdown procedure to ensure that the log files are not corrupted or the instrument rendered unusable when power is removed The ISUS has a design that helps prevent this from occurring so that it is actually safe to simply remove power without following a shutdown procedure A
39. ar water the fitting range can be extended which may reduce the noise level in the measured chemical species due to the availability of more data points for the fitting routine If on the other hand chemical species with absorption in the longer wavelength range were present these would introduce a bias into the calculated concentrations Changing the nominal fitting range is therefore only advisable if the expected water composition is known in advance This setting should only be changed after consultation with a Satlantic representative Baseline Order The baseline order of the instrument is nominally set to 1 linear and should not be changed Under special conditions a baseline order of 2 quadratic has been proven to produce better results This setting should only be changed after consultation with a Satlantic representative Seawater Dark Samples The instrument has a lamp shutter to generate dark sample readings In case of a shutter failure in a saltwater environment only it is possible to estimate dark values by using spectral values in the very short wavelength range instead Saltwater has the property to completely absorb UV in the very short wavelength range This option is provided in order to permit data acquisition during a partial instrument failure This setting should only be changed after consultation with a Satlantic representative Revision A 1 Document Number SAT DN 425 Copyright 2007 b
40. be design and is constructed from titanium and PEEK plastic in order to reduce the possibility of corrosion An acetal probe guard is threaded over the probe to protect it from impact An optional biofouling guard is also available You may remove the guard to clean the probe refer to the Maintenance section for details Never remove the screws holding the probe retaining nut in place You may damage the probe and risk flooding the instrument Probe Retaining Nut Reflection Probe Retaining Screws x2 Figure A 12 Reflection Probe The probe should be carefully cleaned before and after each deployment Refer to the Maintenance section for details Standard Probe Guard The standard probe guard is normally used in profiling applications This guard is a simple acetal plastic tube with several large holes drilled in it to allow water to easily pass over the probe while protecting the probe from impacts The probe guard is threaded on one end to allow it to be attached to the probe retaining nut The guard is 1 75 44 5mm long and 1 75 44 5 mm in diameter Figure A 13 Standard Probe Guard Attached Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page 12 SYSTEM SATLANTIC MBARI ISUS V3 SECTION A OVERVIEW Biofouling Guard The Biofouling Guard also referred to as the anti fouling cap is a novel approach to reducing the amount of marine
41. biofouling on the probe optics This guard essentially consists of an inner acetal support Nitex filter cloth a copper Screen and an end cap to hold the copper screen in place The theory of operation behind the biofouling guard will be described below Notes on assembling the biofouling guard when replacing the filter cloth can be found in the Assembling the Biofouling Guard section in section F MAINTENANCE Basically the copper prohibits growth on the guard and Nitex cloth while the Nitex cloth filters the water and prevents organisms and sediments smaller than the cloth hole size 100 um standard from reaching the probe The biofouling guard is normally used in moored applications It should not be used in profiling applications as the biofouling guard may reduce response times Figure A 14 Biofouling Guard Attached How the Biofouling Guard Works Marine biofouling the growth of marine organisms on submerged surfaces is a common occurrence It is found on marine structures such as wharves hulls and moorings Unfortunately ocean sensor optical detectors such as the MBARI ISUS V3 probe are also prone to biofouling and various methods particularly toxic coatings have been used in an attempt to prevent it However less environmentally dangerous methods are preferred Copper and copper based alloys such as copper nickel has long been known to provide good resistance against biofouling This characteri
42. d locking cord are removed An indication for flooding is that the instrument stops operating or that there is a short circuit condition in the instrument The humidity readings increase when water enters the instrument If you suspect a flood check the instrument for signs of pressurization In a pressurized instrument the gap between the end caps and pressure case may be extended Also an instrument flooded with salt water will short all of the connector pins together An electric continuity test between random pins on any of the bulkheads may confirm this suspicion Place the instrument in a safe location and contact Satlantic for further instructions If the instrument cannot be safely stored away the following steps can be taken CONTINUE AT YOUR ON RISK The safest method to depressurize the ISUS sensor is to slowly back off one of the bulkhead connectors The connector only has to be loosened so that the face seal oring is no longer sealed against the endcap Pressurized water can then escape along the threaded portion of the bulkhead When all of the pressure has been released the instrument can be stored and safely shipped to Satlantic for repairs y operators should always remain aware of the cable Any cable or line released from a ship can be dangerous Keep a safe distance from the cable coil on deck when the instruments are being used Instruments y Do not leave instruments in direct sunlight Direct sunlight
43. e connectors or the cable Always disconnect the power supply first Always rinse the instrument with fresh water prior to storage in order to prevent corrosion If seawater is allowed to remain in contact with the instrument in storage particularly around bolts or other contacts of dissimilar metals corrosion will occur To not properly rinse the instrument before storage is considered misuse and warranty claims cannot be made under such circumstances Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page E 1 SYSTEM SATLANTIC MBARI ISUS V3 SECTION F MAINTENANCE F MAINTENANCE Preventative Maintenance The MBARI ISUS V3 requires little maintenance Protecting it from impacts rinsing it with fresh water after each use careful cleaning of the probe and properly storing the instrument with the dummy connectors in place when not in use will prolong the life of the instrument If the instrument is not working properly the following troubleshooting techniques can be followed If these are not successful contact Satlantic for more information Cleaning the Probe In order to limit the possibility of damaging the probe we suggest leaving the probe guard in place and simply use a Q tip applicator through the guard holes to clean the probe However if you feel it is necessary to remove the probe guard you may simply unscrew the guard by hand with a counter cl
44. el 16 Click Save As and enter a name for this configuration file such as ISUS con Exit the configuration window 17 From the main SeaSave window click ScreenDisplay gt Add New Display Window gt Fixed Display Sein Soven eple PeahraCw View Fe erties Meo woe sod Uie 18 Right click this window then select Setup The Display Setup dialog box will be displayed Display File CSF eere Sen Br dal Options for Display File Select Display LOSE Fie Save Display OSF File 19 Click the Modify Display Parameters button The Fixed Display Variables set up window will be displayed Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page J 3 SYSTEM SATLANTIC MBARI ISUS V3 SECTION Operation Manual J INTERFACING TO A SEABIRD CTD Deo iat 0 Dec 0 Deo 0 Dec 0 Dec 5 Diaz 3 De Dr 2 Dec Digis 2 3 Dee Dea Dg Dec ort ay Dec Digte 3 Dec Doe Dec Diis Lg 20 Set up the default variables as desired 21 Add the nitrate concentration voltage to an unused row by clicking the Select Variable button From the drop down list select voltage 0 Display 6 decimal places
45. etrument Configuration From the configuration dialog box double click the User Polynomial field Enter the calculated AO and A1 coefficients for the nitrate voltage Fill in the serial number and date fields as well From the configuration dialog box double click the User Polynomial 2 field Enter the calculated AO and A1 coefficients for the auxiliary fitting voltage Fill in the serial number and date fields as well Click save The calibration coefficients will be stored to the con file Restart the CTD by clicking RealTimeData Start Acquisition Turn on the magnetic switch After a few seconds the data in the display window will be updated Observe the userpoly 0 nitrate and userpoly 1 auxiliary fields Confirm a valid calibration by generating minimum and maximum DAC output voltages using ISUSCom The readings for these outputs should be NO3 min and max and AUXILIARY min and AUXILIARY max respectively The CTD and ISUS are now calibrated Stop the acquisition in SeaSave and turn off the magnetic switch Ensure you have saved the configurations then exit SeaSave 10 Remove the ISUS power The next time you start SeaSave simply load the ISUS configuration file by selecting Configure gt New Style Instrument Configuration gt Select Instrument Configuration then select the ISUS con file Set up the various displays as you see fit You can now display a plot of nitrate concentration against CTD depth by si
46. for continuity and correctness Make sure that all Subconn connectors are free of dirt and lightly lubricated before mating Do not use petroleum based lubricants Satlantic recommends using a light coating of DC 111 silicone grease made by Dow Corning on the male pins prior to connection Also ensure that the connections are complete and if applicable the locking sleeves are secure f Check that the power cable is properly connected to the power supply and the instrument Check that all instrument interconnect cables are in place and properly connected B Check that the RS 232 cable is connected to the correct PC communications port Check the Supply Voltage Procedure To check voltages a multimeter with DC voltage measurement is required 1 Setthe multimeter to measure a DC voltage 2 f using a battery as the power source measure the voltage directly at the battery terminals with the multimeter A new or fully charged 12 V battery usually measures in the 13 15 V range If the voltage is low under 11 V then recharge or replace the battery If using a DC power supply set the output voltage in the range from 10 20 V and check the voltage with the multimeter Connect the power supply cable to the power source Being extremely careful not to short the probe leads measure the voltage between the pins on the supply cable It should read approximately the same as the measurement taken in step 2 If the voltages are
47. g mode In the screen capture the bright green trace is the analog nitrate concentration signal to the CTD Two up and down casts are shown Here the nitrate concentration was centered on approximately 12 Molar Notice the detail in the nitrate concentration profile This test was performed in Halifax harbour in Nova Scotia Canada on February 3 2003 oe Seasavi BoE SowenDaplsy uchivedDss BestimeData View gum Blo 19 ecktest hex decktest hex ISUS Nitrate ve Depth z 5 3 a a a For Help grecs F1 Storing Data to Dak Gecktest2 hes 15050004 0742 PM Figure C 2 SeaBird SeaSave screen capture Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page C 4 SYSTEM ATI AN rit MBARI ISUS V3 SECTION ion Manual C START UP Operat Deployment Example The ISUS and a battery pack were mounted to the CTD s lowering frame as shown below The frame was then simply lowered over the side of the boat by hand Figure C 3 CTD ISUS and Battery Pack The advantage of this approach is that it allows the user to obtain real time data in a visible format including depth temperature salinity and nitrate concentration It is easy to identify structures such as thermoclines haloclines and fresh water surface layers and their relationship with the nitrate concentrati
48. h the instrument s telemetry interface is used mainly for broadcasting telemetry it can also be used to establish a human user interface to configure and test the instrument A Terminal emulation program is needed to use this interface or to directly monitor instrument telemetry These programs have many common uses such as communicating with bulletin board services remotely logging on to other computers on a_ network or communicating directly with your modem You can also use it for direct communications with a serial port which is ideal for communicating with Satlantic instruments There are many types of terminal emulation programs Most of these are suitable for this application so you are free to use whatever terminal emulator you are comfortable with If you are unfamiliar with terminal emulators this tutorial will help you get started with the emulator program that is distributed with Windows called HyperTerminal Installation of HyperTerm The first step in using HyperTerminal is to make sure it is installed One way of starting the application is to use the Start button on your desktop Select Run and type hypertrm in the space provided If the program cannot be found it has probably not been installed You can also check for a HyperTerminal installation by selecting Start gt Programs gt Accessories If HyperTerminal folder is visible in the Accessories folder HyperTerminal is already installed If HyperTer
49. his port allows the use of isolated power and telemetry Isolation eliminates ground current paths that can interfere with normal instrument operation and cause corrosion The higher input voltage is useful when operating the instrument over long power supply cables Figure A 7 MCBH6M Bulkhead Male Face View Pin Name Description 3 TA RS 422 T from ISUS 4 188 7 6 422 0 7 6 ISO Isolated 5 232 from computer to 506 Isolated Analog Output This port generates analog voltage for the calculated nitrate concentration and auxiliary values using from precision 16 bit DACs Digital To Analog Converters CTDs or other data loggers can record these isolated voltages Figure A 8 MCBH4F Bulkhead Female Face View Pin Name Description 1 NITRATE Analog voltage representing the calculated nitrate concentration 0 4 096 V 2 2 NITRATE 3 AUXILIARY Analog voltage representing the calculated auxiliary fitting value 0 4 096 V AUXILIARY Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page A 9 SYSTEM ANTIC MBARI ISUS V3 SECTION A OVERVIEW USB Telemetry and Power This port provides USB communications with the instrument For non standard use additional power and non isolated RS 232 connections are available Figure A 9 MCBH8M Bulkhead Male Face View Pin Name Description VAUX I
50. hotometer MBARI ISUS commonly referred to as ISUS uses ultraviolet absorption spectroscopy to measure in situ dissolved chemical species This sensor is a chemical free solid state instrument that offers easy accurate real time and continuous nitrate concentration measurements The ISUS provides researchers with data essential to the study of physical chemical and biological processes in the ocean This manual describes the third generation hardware of the MBARI ISUS instrument also referred to as MBARI ISUS V3 The upgrade to version 3 consisted of the capability to fully utilize the USB port of the MBARI ISUS in conjunction with the ISUSCom application to facilitate configuration and data transfer The previous upgrade to version 2 consisted of using an enhanced processor introducing a new user interface and allowing for more flexible scheduling The power consumption of the instrument has been significantly reduced The data rate of the instrument has been increased The bulkhead connectors have been changed as well oz o lt a Figure 1 The MBARI ISUS with Rechargeable Battery Pack Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page A 1 SYSTEM SATLANTIC MBARI ISUS V3 SECTION A OVERVIEW Background Features The MBARI ISUS was developed by Dr Kenneth Johnson and Luke Coletti of the Monterey Bay Aquarium Research Institu
51. iary fitting value This requires that the be configured to measure external voltages 1 Connect to the CTD using Sea Bird s SeaTerm program Revision Document Number SAT DN 425 Copyright O 2007 by Satlantic Page J 1 jn M SYSTEM MBARI ISUS V3 SECTION anual J INTERFACING TO A SEABIRD CTD OQ grs o Congue View He Iz When communication with the has been established configure the to sample external voltages With the SBE19 the SV2 command is used but this will depend on your CTD and other auxiliary instruments that are connected Turn off the CTD Exit the SeaTerm program Start the SeaSave program The SeaSave v 5 26F was used for testing From the Configure menu select New Instrument Configuration gt Create New Instrument Configuration If you already have a configuration file for your system you can select Modify Selected Instrument Configuration The following steps assume a SBE 19 is being used but the steps will be similar for all CTDs OCT output Iesu Fone Seton inyin Coni Od rert Corgi Coran T SEGUI pus Select your CTD from the list A window will open that allows you to edit the various configuration settings Select the pressure
52. ifies the current setting and a third line may provide additional information To modify the parameter press Y lt Enter gt otherwise press Ent er gt orN lt Enter gt Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page K 2 SYSTEM SATLANTIC MBARI ISUS V3 SECTION n Manual K SERIAL COMMUNICATION INTERFACE When modifying a parameter the possible values are listed Enter 0 for SCHEDULED Enter 1 for CONTI NUOUS Enter 2 for FIXEDTI ME Enter 3 for BENCHTOP Enter 4 for TRI GGERED Enter number to assign new value 1 After selecting a value e g 0 the instrument will respond with ISUS deployment mode Using now OpMode SCHEDULED The operational parameters are accessible via four sub menus Setup ployment Setup ectrometer Setup Setup pe E These menus are explained in detail in the following sections Output Setup Menu The Output Setup Menu provides access to telemetry and file output parameters It is identified by the 505 SETUP OUTPUT prompt Status Messages Normally the instrument generates messages during its operation as to inform the user of what is going on It may be desirable to reduce the amount of output generated Potential error messages are not suppressed when status messages are disabled Transfer Frame Mode The results of each nitrate measurement are collected in individ
53. ile It is not possible to disable both data logging and data transfer see previous option Log File in Scheduled Mode When in scheduled mode internally logged data are stored either in one file per day or in one file per scheduled event Satlantic offers the ISUSFile application to join multiple ISUS data files into a single ISUS data file Nitrate and Auxiliary DAC Range The ISUS instrument generates analog output for the measured nitrate and auxiliary fitting data see the paragraph on Isolated Analog Output The minimum and maximum values of the data range correspond to the minimum and maximum output voltages The selected range should correspond to the expected measurement range Selecting a too narrow range may cause loss of information a too wide range may cause reduced resolution For a detailed description see section J Appendix Interfacing the ISUS to a Seabird CTD Profiler Deployment Setup Menu The Deployment Setup Menu provides access to the deployment setting It is identified by the SUS_SETUP_DEPLOY gt prompt ISUS Deployment Mode Deployment or operational mode is one of SCHEDULED CONTINUOUS TRI GGERED BENCHTOP or FI XEDTI ME See section Operating Modes for details Initial Delay in CONTI NOUS Mode The instrument enters a countdown loop before starting to acquire data This loop allows the user to enter the menu interface Fixed Operational Time When in FI XEDTI ME mode the instrument o
54. ions It is however impossible to retrieve a once erased file File transfers from the instrument employ the XMODEM or YMODEM protocol The first step in every download operation is to choose the file to download The second step is to choose the protocol If the serial connection can handle a high baud rate and the file has a large size it is advisable to increase the transfer rate The change of the transfer rate in the ISUS instrument must be matched by a change in the terminal emulators transfer rate For HyperTerm see Appendix Using Windows HyperTerminaL the connection has to be disconnected before changing the baud rate and reconnecting The instrument waits after changing its baud rate for 30 seconds before initiating the file transfer At that time the connecting computer must initiate a Receive File command using the selected transfer protocol After the transfer has completed the instrument will alert the user that it will switch back to the original baud rate For an even faster download the USB connection can be used see below Erase commands It is possible to erase extinction coefficient EE message and error log files EL and data files ED EAD Erasing extinction coefficient files is only useful when a Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page K 8 SYSTEM SATLANTIC MBARI ISUS V3 SECTION jn Manual K SERIAL COMMUNICATION INTER
55. ize Fast sample frequency High data precision and accuracy Deep operation Spectral analysis software lt lt lt lt lt XKX Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page A 2 SYSTEM MBARI ISUS V3 EE mmn SECTION A OVERVIEW Specifications Performance Precision t 0 5 uM Accuracy t 2 uM or 2 whichever is larger Range up to 2000 uM Optics Path length 1 Wavelength range 200 400 nm Lamp type Deuterium Lamp lifetime Electrical Characteristics Input Voltage Current requirement Power consumption Data storage Sample rate Telemetry options Physical Characteristics Anodized Aluminum pressure case Depth rating Length Diameter Weight Operating temperature range Specifications may change without notice 1000 hours to 5096 intensity at 240 nm 6 18 VDC Non isolated power input port 19 75 VDC Isolated power input port 6 18 VDC Auxiliary non isolated power input port 0 55 Amp 12 VDC nominal 6 5 Watts nominal 0 1 mA sleep current 256 MB can be customized 1 Hz typical Analog output 0 4 096 VDC RS 232 RS 422 serial output User selectable baud rates default 38400 bps USB interface 1000 meters 19 10 inches 485 1 mm housing only 22 85 inches 580 4 mm including anode and standard probe guard 23 95 inches 608 3 mm including anode a
56. le All events must be in chronological order The instrument will go through the schedule file line by line comparing its last event time to the time of the event in that line As soon as an event time later than the previous event is encountered the instrument prepares to execute that event at the requested time If there is no event later than the current event in the file the first event in the schedule file will be executed Each scheduling event is represented by a one line entry The first item is the event time given as an hour mi nute second string using a 24 hour clock The second item is the command to be executed The two possible commands are POWER and ACQUI SECONDS Then follows the keyword prepended by a or sign to indicate if the instrument is to be powered up or down Care has been taken in the design of the scheduled operation to not miss any event in case an action requires more time then the time gap to the following event For example it usually takes 25 seconds for the ISUS to power up If there is then an acquisition request too close to the power up event as shown in the example 00 06 30 POWER 1 SUS 00 06 35 ACQUIRE 120 1505 00 08 35 POWER I SUS the next event which was scheduled for 00 06 35 will start late and be cut short by the power down event at 00 08 35 Schedule files may contain comment lines starting with the sign Empty lines and lines containing only space characters are igno
57. minal is not installed it is an easy matter to install it now In Windows 95 98 open the Control Panel by selecting Start gt Control Panel Open the Add Remove Programs control When you have setup these dialog boxes as shown below press the OK button in each one Windows will now install HyperTerminal on your computer You may need your Windows Setup Disks CD for this to complete Just follow the on screen instructions Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page L 1 SATL i HE MBARI ISUS V3 Operation Manual L USING HYPERTERM SYSTEM SECTION Add Remove Programs Properties O 6 Accessibility Options S Accessories e Communications amp amp Disk Tools CI g Microsoft Fax Communications O G Dial Up Networking O 84 Direct Cable Connection HyperTerminal DEME 2 C amp Phone Dialer Figure L 1 Add Remove Programs Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page L 2 SYSTEM SATLANTIC MBARI ISUS V3 SECTION n Manual L USING HYPERTERM Starting a session When starting HyperTerminal for a new connection the program will ask for connection information to be saved for the next session Connection Description 2 xi a New Connection Enter a name and choose an icon for the connection Name me Icon Figure L 2 H
58. mp stability status all acquisitions should begin at the same time relative to the Power On time of the instrument Also during warm up the lamp changes its spectral characteristics therefore the acquisition duration should also be kept fixed to maintain identical operating conditions Should there be an overlap of the Power On sequence into the acquisition period the acquisition will simply begin later and terminate when the scheduled start time plus duration is reached In case the acquisition period extends beyond the Power Off point the later event will overwrite the acquisition request terminate the acquisition and power off the instrument Powering off the instrument overwrites all other actions mainly to ensure the instrument will not remain powered over arbitrary periods of time Data acquired during each scheduling event are logged depending on user specification either to a daily file SCHyyddd DAT yy and ddd indicating year and day of the acquisition or to one file per event DI VEnnn DAT to a maximum of 999 files While in low power sleep and when connected to a terminal emulator the instrument will wake up upon any key press There will be a 15 second window during which it is possible to enter the menu with the M command otherwise the instrument will go back to sleep to wait for the next scheduled event Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page D 2
59. mply adding userpoly O to the plot Experiment to create a plot that suits you Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page J 7 SYSTEM SATLANTIC MBARI ISUS V3 SECTION J INTERFACING TO A SEABIRD CTD K Appendix Serial Communication Interface Menus Via the serial communication interface SCI the ISUS menu is accessible instrument must be connected to a power supply and via its isolated telemetry port 6 pin to a computer capable of emulating a serial terminal connection The HyperTerm software is a frequently used terminal emulator but other programs work equally well For a guide on how to use HyperTerm please refer to the guide in Appendix L The ISUS always uses 8 data bits no parity no flow control and one stop bit for its communication The data rate can be adjusted by the user and is initially set to 38400 baud When turned on the instrument will first send startup messages over its serial communication port Then it waits for the operator to sent an interrupt M key for entering the root menu If no interrupt is received the normal mode of operation data acquisition will begin CONTI NUOUS XEDTI ME mode or operation be suspended to resume up at a later time SCHEDULED BENCHTOP TRIGGERED mode The S key interrupts acquisition and a further key will bring the instrument into the menu
60. n nnne nennen nnne nennen nnne A 8 Isolated Power and Telemetry Port s sss eene nnne nnne nnne nnne nnne A 9 Isolated Analog OUIDUI 1 iaceo i De ek ne eae a FART er ace ea Redon shoes A 9 USB Telemetry and POWOTF eiiis coats i esent sca aoo A 10 Sacrificial ANOdE A 10 ey minuge M M A 10 Probe End A 11 v X G A 12 Standard Probe GUard i reset A 12 BiOGQUIING QUAI X A 13 How the Biofouling Guard A 13 B 7 eee dens B 1 PERSONAL SAFETY E aai B 1 INSTRUMENT E 2 E E A E B 1 CABLE En B 2 CONNECTIONS iis AE A A EAE E A A B 2 TROUBLESHOOTING PAEA EE E A E A E B 2 PRE COVERY AAE E 2 C STARTUP iunt C 1 CONFIGURATION AND TESTING M C 1 o euHucnide ti C 1 ASSEMBLY FOR DEPLOYMENT eee aa au RR uasa NERA
61. nal Road Halifax Nova Scotia B3K 5X8 Canada PHONE 902 492 4780 FAX 902 492 4781 Email Technical Support support satlantic com General Inquiries info satlantic com Web _http www satlantic com Business Hours Satlantic is normally open for business between the hours of 9 00 AM and 5 00 PM Atlantic Time Atlantic Time is one hour ahead of the Eastern Time Daylight saving time is in effect from 2 00 a m on the second Sunday in March through 2 00 a m on the first Sunday in November Atlantic Standard Time AST is UTC 4 Atlantic Daylight Saving Time ADT is UTC 3 Satlantic is not open for business during Canada s statutory holidays which are as follows New Year s Day January 1st Good Friday The Friday before Easter Sunday Easter Sunday is the first Sunday after the full moon on or following March 21 or one week later if the full moon falls on Sunday Victoria Day The first Monday before May 25 Canada Day July 19 Halifax Natal Day The first Monday in August Labor Day The first Monday in September Thanksgiving Day second Monday in October Remembrance Day November 11 Christmas Day December 25 Boxing Day December 26 Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page H 1 SYSTEM SATLANTIC MBARI ISUS V3 SECTION l SCHEDULE FILE EXAMPLE l Appendix A Schedule File Example Schedule files define a daily schedu
62. nce except Br Absorbance Br Wavelenath nm Figure A 2 Primary UV Absorbing Species in Seawater Nitrate is one of the main nutrients required for growth of phytoplankton Understanding the distribution of nitrate in the oceans is essential to understanding biological processes The ISUS is designed to be a self contained nitrate monitoring system that does not require wet chemistry i e reagents to determine nitrate concentration Eliminating wet chemistry results in a less complex more reliable and easier to use system The standard method for measuring nitrate in the past was to collect samples at sea freeze them and bring them back to a lab using a system called an autoanalyser The autoanalyser mixes chemicals with the sample to generate a coloured solution that can be quantitatively measured Systems that use this Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page A 4 SYSTEM SATLANTIC MBARI ISUS V3 SECTION yn Manual A OVERVIEW Calibration technique in situ are complex because they require mixing limited shelf life reagents and loading these into the instruments The ISUS bases its results on absorption characteristics of inorganic compounds in the 200 400nm range of the UV spectrum By illuminating a sample of seawater with UV light onto an UV spectrometer the absorption spectra can be measured The calibration process of the sys
63. nclude shipping charges to and from Satlantic To return products to Satlantic whether under warranty or not contact the Satlantic Customer Support Department and request a Returned Material Authorization RMA number and provide shipping details All claims under warranty must be made promptly after occurrence of circumstances giving rise thereto and must be received by Satlantic within the applicable warranty period Such claims should state clearly the product serial number date of purchase and proof thereof and a full description of the circumstances giving rise to the claim All replacement parts and or products covered under the warranty period become the property of Satlantic Inc IF SATLANTIC EQUIPMENT SHOULD BE DEFECTIVE OR FAIL TO BE IN GOOD WORKING ORDER THE CUSTOMER S SOLE REMEDY SHALL BE REPAIR OR REPLACEMENT AS STATED ABOVE IN NO EVENT WILL SATLANTIC INC BE LIABLE FOR ANY DAMAGES INCLUDING LOSS OF PROFITS LOSS OF SAVINGS OR OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OR INABILITY TO USE THE EQUIPMENT OR COMPONENTS THEREOF Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page G 1 SYSTEM SATLANTIC MBARI ISUS V3 SECTION H CONTACT INFORMATION H CONTACT INFORMATION Location If you have any problems questions suggestions or comments about the instrument or manual please contact us Satlantic Inc 3481 North Margi
64. nd biofouling guard 4 5 inches 114 3 mm With standard probe guard 11 3 Ibs in air 5 15 kg 0 1 Ibs in water 0 05 kg With biofouling guard 11 6 Ibs in air 5 25 kg 0 2 Ibs in water 0 1 Kg 0 to 35 C Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page A 3 SYSTEM SATLANTIC MBARI ISUS V3 SECTION A OVERVIEW Principle of Operation The MBARI ISUS uses the UV 200 400nm absorption characteristics of various chemical species to provide in situ measurements of their concentrations in solution The system consists of four key components a stable UV light source a UV spectrometer a fiber optic sampling probe and a processing computer All components are housed within a single pressure case A plastic guard covers and protects the sampling probe in profiling applications An optional antifouling probe guard covers the sampling probe and provides interference from fouling organisms in moored applications The precision calibration of the ISUS uses standard sample solutions over a range of salinity conditions The system is solid state and requires no user adjustments or chemicals to operate Once powered up the system begins to compute nitrate concentrations of solutions in the sample probe automatically Many dissolved inorganic compounds including nitrate nitrite bisulfide and bromide absorb light at UV wavelengths 25 840 uM Br Absorba
65. nector for 75 VDC nominal s used for power supplied by cable Depending on the data collection configuration the 6 pin serial or 4 pin analog outputs may be connected to their respective data logging devices Once the ISUS is powered an initialization sequence will prepare the device for operation The ISUS will output status messages as it goes through the initialization steps These will be displayed in the terminal emulator and are also logged instrument internally for later reference Data Logging and Processing The ISUS normally logs data internally so an additional data acquisition device or software is not required to operate the instrument After deployment ISUSCom then retrieves the internally logged data files and ISUSPro can be used to further process the data SatCon can convert ISUS log files into a standard file format suitable for use in spreadsheet applications Users who want closer control over the deployment may choose to monitor the data acquisition in real time For utilization of analog data see below under Telemetry Acquisition with a Seabird CTD Serial digital output can be logged and visualized using Satlantic s SatView software see Telemetry Acquisition Using SatView below for details Using an ISUS in an embedded system requites to feed either the analog or the digital telemetry into the systems data logger Satlantic has experience with a variety of setups and will provide support for custom
66. nnn is the instrument serial number and is a versioning letter to distinguish different instances of the extinction coefficients Thus when uploading a new extinction coefficient file onto the instrument the user is only requested to specify the version letter In this way errors due to a misnaming of files are eliminated Similarly data log files generated by the instrument are of the form DI VEnnn DAT SCHED DAT or SCHyyddd DAT see under Operating Modes for details Thus the user is only able to select files named in this scheme for download List commands The list commands will give a listing of the files of the specified type that are on flash disk Available commands are LP list program file LC list coefficient file s LL list message and error log files and LD list data files Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page K 7 SYSTEM SATLANTIC MBARI ISUS V3 SECTION K SERIAL COMMUNICATION INTERFACE Output commands The output command causes a selected file to be printed to the screen It is possible to output coefficient files OE OW the schedule file 05 log files OL and data files 0D For large data files completion of output may take a long time It is usually better to download a data file and view it locally Upload commands If an instrument runs in scheduled mode it is always necessary to upload the S CHEDULE TXT file
67. nput Power 6 18 VDC VAUX GN USB 6 8 Sacrificial Anode The sacrificial anode see Figure A 5 is constructed from zinc and is 2 long and is 1 in diameter It is mounted to the connector endcap using a 2 long 10 32 316 Stainless Steel screw Its purpose is to help protect the aluminum housing from galvanic corrosion Galvanic corrosion is a common problem in marine environments It occurs when dissimilar metals are brought into electrical contact in the presence of an electrolyte such as seawater One of the metals will become the anode and corrode faster then it would if the other were not present depending on the metals location in the galvanic series of metals As zinc is less noble than aluminum it acts as the anode in the galvanic couple formed with the aluminum and is corroded first hence the term sacrificial helping to protect the aluminum housing against corrosion Satlantic recommends replacing the zinc anode when approximately 40 5096 of the anode has corroded away Power Supply The MBARI ISUS V3 has a flexible power supply system that allows it to be powered from a number of sources depending on the application Normally a 12 V battery pack is used Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page A 10 SYSTEM SATLANTIC MBARI ISUS V3 SECTION 3n Manual A OVERVIEW OX GUN Po
68. ockwise rotation Never remove the probe retaining nut this is held in place with 2 to 4 countersunk screws Doing so will likely damage the probe internally and flood the instrument To clean the probe use the following procedure 1 Acceptable cleaning agents include methanol or isopropyl alcohol using standard cleaning methods commonly used on soft coated optics De ionized water may be used however it may leave spots that can affect transmission and absorption 2 Do not soak the Q tip or lens tissue with the cleaning agent It will leave pools of liquid that will not dry properly Just dampen the applicator with the agent 3 The applicator should be moved over the probe in one direction and then discarded or rotated to a different position so that contaminants are not rubbed across the surface 4 Ensure that all probe surfaces are cleaned 5 The probes should be rinsed with water or methanol before they are stored or if they will not be used for a period of time The probes will have a small amount of carry over so it may be necessary to rinse them off before moving to the next sample if no contamination is desired Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page F 1 SYSTEM SATI NTIC MBARI ISUS V3 SECTION Operation Manual F MAINTENANCE Assembling the Biofouling Guard This section outlines the steps involved in assembling the biofo
69. on Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page C 5 SYSTEM SATLANTIC MBARI ISUS V3 SECTION D OPERATION D OPERATION Operating Modes Continuous Fixed Time Scheduled The MBARI ISUS V3 has been designed with several user selectable operating modes CONTI NUOUS FI XEDTI ME SCHEDULED BENCHTOP and TRI GGERED Future ISUS units may include additional operating modes not described here The operating mode is retained in the ISUS s non volatile memory At power up the operating mode is checked and the necessary initialization actions are performed If the user changes the operating mode the instrument firmware has to be rebooted either via the reboot command or by removing and then reapplying power When cycling power it is necessary to wait approximately 1 minute before reapplying power in order to discharge the instrument internal power protection charge In continuous or profiling mode the instrument begins acquiring data after a configurable number of seconds initially 15 and stops when power is removed Each acquisition cycle starts a new log file on the ISUS internal flash disk with the name DI VEnnn DAT where nnn is incremented with each cycle nnn is referred to as the deployment counter and is saved in non volatile memory Thus each profile is logged to a separate file When connected via a terminal emulato
70. overy This can cause damage to the bulkhead connector and the underwater splice Be sure to rinse seawater from the instrument with fresh water prior to storage Corrosion resulting from failure to do so is not covered under warranty Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page B 2 SYSTEM SATLANTIC MBARI ISUS V3 SECTION C START UP C START UP Configuration and Testing The following items are required to configure the MBARI ISUS V3 instrument B Computer with a free USB port for communication and data download f ISUSCom application for interfacing to the ISUS provided ISUS CD f Instrument package file in XML format provided on ISUS CD fs DC power source Either 6 18 VDC 12 15V preferred or 19 75 VDC with a minimum 1 A current To get started connect the instrument to the computer s USB port via the 8 pin connector The power supplied by the USB port is sufficient to operate the ISUS on board computer As a result no auxiliary power is required to communicate with the instrument through the ISUSCom application However for testing the ISUS operation and acquiring data DC power must be supplied either via the 2 pin 12 VDC nominal or the 6 pin 75 VDC nominal connector Once the ISUS is connected to the computer via the USB port start the ISUSCom application When the Connection Mode indicator reads Setup with a green b
71. perates for a fixed time and then enters the menu interface In TRI GGERED mode this is the maximum acquisition duration Spectrometer Setup Menu The Spectrometer Setup Menu provides access to spectrometer settings It is identified by the SUS SETUP SPEC prompt Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page K 4 SYSTEM SATLANTIC MBARI ISUS V3 SECTION K SERIAL COMMUNICATION INTERFACE Integration Period Selecting this command allows the user to set the spectrometer integration time in milliseconds The normal setting is between 700 and 850 ms This value should not be changed as it requires a re calibration of the instrument Collection Rate A complete acquisition cycle consists in taking a fixed number of dark samples followed by another fixed number of light samples Normally 1 dark sample and 10 light samples are taken Dark values should be taken regularly because they compensate the thermal electronic noise of the instrument If more than one dark reading is taken an average value is calculated Spectrometer Coefficients The spectrometer polynomial coefficients permit calculation of the wavelength of each spectrometer channel These values cannot be changed Lamp Setup Menu The Lamp Setup Menu provides access to fiberlite lamp settings It is identified by the SUS_SETUP_LAMP gt prompt Power On Warm up Period The lamp ignites
72. played It is recommended to test a new schedule over a 24 hour period prior to any deployment Setting up for Continuous Deployment Initially an ISUS instrument will operate in CONTI NUOUS mode After changing the operating mode to some other setting the operator must first enter the menu system in order to set it back to CONTI NUOUS mode To switch into CONTI NUOUS mode the operator must enter the Setup Menu and in it the Deployment Setup Menu The Operational Mode must be changed to CONT NUOUS and on the next power up the instrument will be in CONTI NUOUS mode Leave the 1505 SETUP DEPLOY menu using the 0 command and Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page K 10 SYSTEM SATLANTIC MBARI ISUS V3 SECTION K SERIAL COMMUNICATION INTERFACE then the 1505 SETUP menu also using the 0 command Confirm that the settings should be stored to be ready at next power up You should now be in the 1515 gt root menu Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page K 11 SYSTEM SATLANTIC MBARI ISUS V3 SECTION L USING HYPERTERM L Appendix Using Windows HyperTerminaL Most Satlantic instruments use serial communications for interfacing with the outside world This type of interface is simple to operate and convenient for applications such as these Althoug
73. power supply BF4 VOLT 5 AF5 The voltage of the internal analog power supply BF 4 VOLT MAIN AF5 The voltage of the main internal supply BF 4 REF AVG AF 7 The average Reference Channel measurement during the BF4 sample time in ASCII mode to 2 decimal places REF STD AF 6 The variance of the Reference Channel measurements in ASCII 4 mode to 2 decimal places SW DARK AF8 An AF formatted field representing the Sea Water Dark 4 calculation to 2 decimal places in spectrometer counts SPEC AVG AF8 An AF formatted field representing the average value of all BF4 spectrometer channels to 2 decimal places CHANNEL Xi AI 3 5 The counts of the first channel wavelength A of the BU2 spectrometer CHANNEL AI 3 5 The counts of the n th channel wavelength A of the BU2 spectrometer CHANNEL A256 Al 3 5 The counts of the last 256 th channel wavelength of the BU2 spectrometer CHECK SUM Al 1 3 A check sum validates frames BU 1 Satlantic s software rejects invalid frames TERMI NATOR AS2 This field marks the end of the frame by a carriage return line AS2 feed pair ODhex and OAnex Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page D 5 SYSTEM ANTIC MBARI ISUS V3 SECTION D OPERATION Depending on the frame type the sizes of the frames for ASCII frames including the delimiters are ASCII Concentration Frame 73 bytes maximum A
74. r the user will see a per second counter before the start of the acquisition The G go command bypasses the start up delay the M command provides access to menus for configuration setup and data download After exiting the menu the instrument will return to the start up counter After the instrument has started acquiring data the 5 stop command multiple key presses may be necessary will return the instrument into the start up loop Fixed time mode is almost identical to continuous mode The only exception is that the instrument stops acquiring data after a user configurable period and enters low power mode The user can then choose to enter the menu Scheduled mode is typically used in moored applications The ISUS can be scheduled to periodically wake up measure and record data Between events the instrument enters a very low power sleep state to conserve power The schedule is defined in the SCHEDULE TXT file which has to be uploaded onto the instrument prior to deployment Initially the instrument is scheduled to power the instrument once every 60 minutes and acquires 20 seconds worth of data every time The ISUSCom application is used to create a custom SCHEDULE TXT file The scheduling file contains three types of command lines for example Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page D 1 SYSTEM SATLANTIC MBARI ISUS V3 ee
75. red The parsing of schedule files is not very robust so incorrectly formatted files may cause unexpected behavior Therefore it is recommended to test a new schedule by acquiring data in scheduled mode for a 24 hour period prior to deployment Below is an example of a schedule file An ISUS set up with this schedule acquires ISUS nitrate data every six hours for a period of 20 seconds Schedule file for data acquisition every 6 hours 00 06 30 POWER 1 SUS 00 07 15 ACQUIRE 20 1505 00 07 37 POW I SUS 06 06 30 POWER 1 SUS 06 07 15 ACQUIRE 20 1505 06 07 37 POWER I SUS 12 06 30 POWER 1 SUS 12 07 15 ACQUIRE 20 1505 12 07 37 POWER 1 SUS 18 06 30 POWER 1 SUS 18 07 15 ACQUIRE 20 1505 18 07 37 POWER I SUS Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page 1 1 SYSTEM SATLANTIC MBARI ISUS V3 SECTION J INTERFACING TO A SEABIRD CTD J Appendix Interfacing the ISUS to a Seabird CTD Profiler The purpose of this document is to describe a generic procedure for interfacing the ISUS to a Sea Bird CTD profiler such as the SBE 9 SBE 19 or SBE 25 Testing has been done at Satlantic with the SBE 19 but the same general procedure should work for any of the listed series of profilers Important Note This document refers to ISUS V3 For earlier instrument versions please refer to the appropriate document or simply replace the nitrate and a
76. setups For more information on these applications refer to the user s manuals distributed with the software Any terminal emulator configured to use 1 start bit 8 data bits 1 stop bit and no parity at the configured baud rate initially 34800 bps can be used for logging Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page C2 SYSTEM MBARI ISUS V3 SECTION C START UP Telemetry Acquisition Using SatView If you are using the ISUS with real time telemetry it is possible to monitor the data in Satlantic s SatView software In this case the 6 pin serial cable must be connected to a computer s serial port To view the ISUS data in SatView go to the Setup Menu on the Toolbar and select Add instrument Browse to find the appropriate SI P file included on the instrument CD and load it into the From Instrument Package box Once the SI P file is loaded go to the main SatView window and set the COM port For further instructions on how to use SatView please refer to the SatView user manual Below is an example of a data acquisition The top left window is the connection interface and at the top right auxiliary data nitrate concentration temperatures power stability are shown At the bottom the numerical values and a graph of the UV spectrum are displayed ox EEETTET File Setup Log View Window Help Views
77. shown Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page L 5 SYSTEM MBARI ISUS V3 SECTION L USING HYPERTERM Additionally the ASCII Setup must be adjusted as shown in the figure below m ASCII Sending Send line ends with line feeds Echo typed characters locally Line delay o milliseconds Character delay 0 milliseconds ASCII Receiving Append line feeds to incoming line ends Force incoming data to 7 bit ASCII Wrap lines that exceed terminal width j Cancel Figure L 6 ASCII Setup dialog box These settings are important in maintaining proper character I O with the instrument HyperTerminal is now set up to communicate with the instrument This lengthy setup procedure must only be executed once When exiting HyperTerm the program will save all connection information in a HyperTerminal file ht in the application s directory Opening this file at a later time will cause HyperTerm to establish a connection with identical settings Re connecting via the Call menus Connect command will open the connection in a terminal window displaying any data sent by the instrument Any key pressed on the keyboard will be sent to the instrument Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page L 6 SYSTEM SATLANTI
78. slides into place The shims serve to pull the cloth tight over the windows holes cut in to the guard base and ensures that the water cannot bypass the cloth Figure F 6 Slide the copper screen in place Check to make sure that the cloth is properly positioned under the copper screen by looking inside from the bottom of the guard The cloth should be stretched tight across the base holes If the copper screen is correctly positioned the solid vertical sections of the copper screen no machined Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page F 5 SYSTEM SATI NTIC MBARI ISUS V3 SECTION Operation Manual F MAINTENANCE holes portions will be directly over the plastic shims and should not be visible through the cloth 8 Attach the end cap using the 1 4 long 8 32 nylon screw Figure F 7 Attach the end cap 9 The completed biofouling guard is now ready to be installed on the MBARI ISUS V3 Check to ensure that the scribe marks on the copper screen and base are aligned TTTS Meern Scribe Marks Figure F 8 Check for scribe marks Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page F 6 SYSTEM SATI ric MBARI ISUS V3 SECTION Operation Manual F MAINTENANCE 10 To mount the guard to the MBARI ISUS V3 simply thread it on to the probe retaining n
79. st four characters are the instrument serial number DATE AS 7 The date field denotes the date at the time of the sample using BS4 the year and Julian day The format is YYYYDDD TI ME AF 9 The time field gives the GMT UTC time of the sample in decimal BD8 hours of the day TR CONC AF 4 7 The Nitrate concentration as calculated by the ISUS is reported BF4 in ASCII frames to 2 decimal places AUX1 AF 4 7 First auxiliary fitting result of the ISUS is reported BF 4 AUX2 AF 4 7 Second auxiliary fitting result of the ISUS is reported BF 4 AUX3 AF 4 7 Third auxiliary fitting result of the ISUS is reported BF 4 RMS ERROR AF 8 10 The Root Mean Square Error of the ISUS concentration 4 calculation is given in ASCII frames to 6 decimal places The above fields are present in all frames the following fields only in full frames T INT AF 5 The temperature inside the ISUS housing is given in degrees 4 Celsius in ASCII frames to 2 decimal places 5 The temperature of the spectrometer is given in degrees Celsius 4 in ASCII frames to 2 decimal places T LAMP AF5 The temperature of the lamp is given in degrees Celsius in 4 ASCII frames to 2 decimal places LAMP TI ME Al 1 6 The lamp on time of the current data acquisition in seconds BU4 HUMI DI TY AF 4 5 The humidity inside the instrument given in percent Increasing 4 values of humidity indicate a slow leak VOLT 12 AF5 The voltage of the lamp
80. st to ensure that all required items are included The dummy connectors should be removed and stored so that they can be replaced after the d Currently only computers running Microsoft Corporation s Windows 95 98 NT 2000 XP operating systems are supported Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page C 1 SYSTEM SATLANTIC MBARI ISUS V3 SECTION jn Manual C START UP instrument is recovered The instrument packing should be retained and reused to prevent instrument damage during transport Additionally lubrication for the male pins prior to connection is required Satlantic recommends DC 111 silicone grease made by Dow Corning A petroleum base lubricant must not be used When connecting the cables proper alignment on the connector pins is critical to avoid damage Connectors should be inspected to ensure they are free of dirt and then lightly lubricated before connecting Visually ensure that the pins on the male connectors are properly aligned with and partially seated into the sockets on their female counterparts before pushing them together Finally ensure that the locking sleeve is securely fastened after connection Assembly for Deployment For deployment the instrument body is mounted to a frame Power can be supplied via a battery pack mounted alongside In this case the 2 pin connector for nominal 12 VDC is to be used The 6 pin con
81. stic has been used to advantage in a number of commercial products and it has even been used as a cladding on ship hulls The MBARI ISUS V3 takes advantage of this characteristic by mounting a copper screen around the probe The copper prevents marine growth from occurring on the guard and the filter cloth beneath it while also filtering out particulate matter Immediately beneath the copper is a layer of Nitex filter cloth with 100 um hole which blocks particles and 2 Other sizes are available from 5 um up to 1000 um and can easily be changed by the user Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page A 13 SYSTEM SATLANTIC MBARI ISUS V3 SECTION A OVERVIEW marine organisms The filter is passive with sample water naturally flushing through the cloth Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page A 14 SYSTEM NTIC MBARI ISUS V3 SECTION B SAFETY amp HAZARDS B SAFETY amp HAZARDS Personal Sa fety WARNING If you suspect that the ISUS has flooded use EXTREME CAUTION around the instrument The ISUS can operate at depths of up to 1000 meters If the instrument leaked at depth it might remain highly pressurized when recovered and cause the end cap to be launched from the pressure case with extreme force if the plastic restraining screw an
82. stream of data being output to the display However you should be able to periodically pick out the instruments frame header or synchronization string This series of characters appears at the beginning of every frame of telemetry as defined in your instrument telemetry definition file If you do not see the frame header but you do see random characters check that the baud rate of the terminal emulator is the same as for the instrument If you do not see anything at all make sure that no other application is using the serial port of the computer If this checks out there may be a hardware problem Revision A 1 Document Number SAT DN 425 Copyright O 2007 by Satlantic Page F 8 SYSTEM SATLANTIC MBARI ISUS V3 SECTION F MAINTENANCE Troubleshooting for Hardware Problems If a telemetry check using a terminal emulator failed to show any telemetry you should check the physical connections of your instrument and supporting equipment To perform hardware checks a multimeter with DC voltage measurement resistance measurement and continuity check capability is required WARNING While checking voltages extreme care should be used so as not to short the probe leads A shorted power supply or battery can output many amperes of current potentially harming the user starting fires or damaging equipment Check Connections The cable connections of the system should be checked
83. te MBARI For a detailed description of the MBARI prototype system see their paper Johnson K L Coletti 2002 In situ ultraviolet spectrometry for high resolution and long term monitoring of nitrate bromide and bisulfide in the ocean Deep Sea Research 49 1291 1305 Satlantic and MBARI collaborated to make the instrument commercially available to researchers Satlantic has made significant advances in both system hardware and computational software to provide customers with the state of the art in situ spectroscopic analysis Using advanced UV absorption techniques the ISUS calculates NO concentration from the seawater absorption spectrum without the need for chemical manipulation The ISUS has the stability sensitivity and endurance to operate for extended periods of time with low maintenance It has been successfully deployed in a variety of marine environments and operational modes including y Profiling systems high resolution nitrate profiles allow insight into nutrient structures y Fixed platform moorings the flexible sampling schedule and internal data storage capacity allow easy integration into a monitoring program y Towed vehicles the data is collected by the vehicle s data acquisition System or logged internally The features of the ISUS include Real time Nitrate measurements Analog output port for easy integration with conductivity temperature depth and other sensors Low power compact s
84. tem creates a library of absorption spectra for the main absorbing species in this region of the spectrum An optimization process adjusts the concentrations of the calibrated species spectra until the computed spectrum matches the measured one Titanium Retroreflection Vals Probe oume Light from UV Source Light to UV Spectrograph Quartz Fiber optics Window Figure A 3 Seawater Sample Illumination Calibration parameters for the nitrate calculations are loaded onto the instrument The parameters are obtained at Satlantic by measuring absorption spectra of samples in the range of 0 40 Mol nitrate 0 35 psu practical salinity units and 0 20 C temperature These measurements fully characterize the instrument for the range of field applications Contact Satlantic for calibrations outside of this measurement range Operational Summary The MBARI ISUS V3 is equipped with multiple interfaces for easy adaptation to individual applications It provides user data in the following formats e analog outputs for easy interfacing to CTD systems see Appendix Interfacing the ISUS to a Seabird CTD Profiler e digital telemetry concentration only formats or full spectral output in either ASCII or BINARY format e digital output stored on an internal 256 MB flash card Details on the data formats can be found in Section D OPERATION The ISUS may be powered from a battery pack high capacity replaceable cells or from other external power
85. tinuity there is a break in the cable which will require repair Repeat step 2 for all pins in the cable 4 Check for shorts from pin 1 to all other pins by keeping one probe lead on pin 1 and touching the other probe lead to each of the other pins in the same connector in turn Repeat this for all pins on the cable to make sure that all the pins are isolated from each other The meter should read this as open or measure a very high resistance If any of the pins are not isolated there is a short in the cable which will require repair Revision Document Number SAT DN 425 Copyright O 2007 by Satlantic Page F 10 SYSTEM SATLANTIC MBARI ISUS V3 SECTION G WARRANTY G WARRANTY Warranty Period All Satlantic equipment is covered under a one year parts and labor warranty from date of purchase Restrictions Provisions Returns Liability Warranty does not apply to products that are deemed by Satlantic to be damaged by misuse abuse accident or modifications by the customer The warranty is considered void if any optical or mechanical housing is opened In addition the warranty is void if the warranty seal is removed broken or otherwise damaged During the one year from date of purchase warranty period Satlantic will replace or repair as deemed necessary components that are defective except as noted above without charge to the customer This warranty does not i
86. ual frames See Frame Output Modes for details This option determines what frame type will be transmitted over the serial connection Options are NONE a full frame in ASCII format a full frame in binary format or a short concentration frame The instrument default is to send full ASCII frames For the purpose of post processing full frames are essential Disadvantages of full frames are increased transfer times It is not possible to disable both data transfer and data logging see next option Logging of Frames to File The results of each nitrate measurement are collected in individual frames See Frame Output Modes for details This option determines what frame type will be logged to internal data file Options are NONE a full frame in ASCII format a full frame in binary format or a short concentration frame The instrument default is to log full ASCII frames Revision Document Number SAT DN 425 Copyright O 2007 by Satlantic Page K 3 SYSTEM SATLANTIC MBARI ISUS V3 SECTION K SERIAL COMMUNICATION INTERFACE For the purpose of post processing full frames are essential Disadvantages of logging full frames are increased write time and disk use If no post processing is required logging of data can be disabled In this case the data rate may increase slightly due to reduced processing requirements There is no possibility to recover data without logging to f
87. uling guard Normally you will only have to disassemble and reassemble the guard when the Nitex filter cloth is replaced before each mooring deployment The following figure shows the items necessary to assemble the biofouling guard Nitex Copper Screen Filter Cloth 8 32 Driver Plastic Shims Figure F 1 Biofouling Guard Components Guard End Cap There are two 43x3 mm o rings mounted on the guard base that help to hold the filter cloth against the copper screen These o rings only need to be replaced if they are damaged Assembling the guard is a delicate procedure and may take some time to complete Be careful not to damage the probe when mounting it to the MBARI ISUS V3 Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page F 2 SYSTEM SATI ric MBARI ISUS V3 SECTION Operation Manual F MAINTENANCE The following figure details the components of the biofouling guard and shows how to assemble them Parts List T ITEM TITLE QTY 8 32 x 14 SHCS SCREEN RETAINER 1 BIOFOULING SCREEN 1 100 MICRON NITEX 7 2 43 x 3mm METRIC ORING ISUS PROBE BIOFOULING GUARD 4 40 x 1 4 SHCS 2 130 BUNA ORING 1 Figure F 2 Biofouling Guard Exploded Assembly Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page 3 SYSTEM SATLANTIC MB
88. uma Number Scent ty Average inthe Deck Uni fi COMM ETT 30 Select the proper CON file ISUS con in our example 31 Uncheck the Store on Disk box you don t need to log this example 32 Click the COMM Port Configuration button Configure it to reflect the CTD profiler settings Revision Document Number SAT DN 425 Copyright O 2007 by Satlantic Page J 5 SYSTEM MBARI ISUS V3 SECTION J INTERFACING TO A SEABIRD CTD 33 Press the Start Acquire button 34 Turn on the CTD s magnetic switch After a few seconds you should see data from the CTD being updated in the display window You now need to perform an ISUS CTD calibration Keep the CTD running ISUS CTD Calibration The following procedure will allow you to calibrate the ISUS with your CTD This is a linear 2 point voltage calibration There are two interfaces to generating DAC output voltages Either using the ISUSCom application or via the ISUS Menu System The ISUSCom GUI provides an interface in its Tools Menu whereas the ISUS Menu System access is from the root menu via the SUS gt submenu press the 1 key followed by Enter and then the 505 DAC menu submenu press the A key followed by Enter Both interfaces allow the user to generate the Low and High output voltages needed for the calibration procedure 1 To begin the calibration
89. ut and tighten by hand Only hold on to the guard base as shown If you try to mount the guard while holding on to the copper the copper will rotate on the base Ensure that the scribe marks still line up otherwise water flow through the filter cloth may be affected Figure F 9 Mounting the guard Figure F 10 The ISUS with Biofouling Guard Revision Document Number SAT DN 425 Copyright 2007 by Satlantic Page F 7 SYSTEM SATLANTIC MBARI ISUS V3 SECTION F MAINTENANCE Troubleshooting using a Terminal Emulator If you are experiencing problems receiving data with your data acquisition software there may be a problem with the instrument its configuration or its physical setup You can confirm if the instrument is transmitting telemetry using a terminal emulator To do this first complete the assembly procedure described in section C START UP Connect the instrument to a computer running a terminal emulation program For this test you may use either the RS 232 interface directly or the RS 422 interface through an appropriate level converter You can therefore use the same physical configuration you would use in the field However if at a later point you need to gain access to the instruments menu system you will need to use the RS 232 interface directly Once the instrument is powered up and is in normal operation with free running telemetry you should see a regular
90. uxiliary minimum values to 0 in the coefficient determination calculations Background Setup Along with its serial telemetry ISUS generates an analog voltage representation of the calculated nitrate and auxiliary values These voltages are generated from a precision 16 bit digital to analog converter DAC and will lie in the range of 0 to 4 096 Volts These voltages be recorded by the profiler allowing the data to be merged with the CTD data This application note assumes that the user has some familiarity with their CTD system and has knowledge of Sea Bird s SeaTerm and SeaSave software and that the latest version of these software packages are installed on your logging computer Physical Setup ISUS Setup You will need a PC with two spare comm ports to configure the ISUS and CTD profiler 1 Ensure that the ISUS and CTD power is off 2 Connect the ISUS CTD interface cable to the ISUS and CTD profiler The ISUS connector will be a MCBH4F The CTD connector will depend on your CTD system but it is usually an AG 306 HP Here we assume the single ended input is used 3 Connect the CTD to a spare comm port on your computer 1 Connect the ISUS to an USB port on the computer using the 8 pin USB cable 2 Startup the ISUS software ISUSCom Before proceeding you will need to set up the CTD profiler CTD Setup The ISUS outputs two analog voltages to represent nitrate concentration and auxil
91. wer can be supplied on 3 of the bulkhead connectors They are connected internally using diodes preventing the possibility of shorting supplies If power is available on more than one bulkhead the one with the highest voltage will supply the ISUS The ISUS normally draws 0 55 A at 12 V while operating Previous versions of the ISUS required a significant current surge when enabling the UV lamp However this surge is virtually eliminated in the new design A minimum supply of 1 A at 12 V is adequate to turn on ISUS The instrument will detect a situation of insufficient power and commence a safe shutdown procedure If this procedure is entered during the initial stages of the operation the power supply was probably too weak In this situation it is recommended to disconnect the instrument and restart using a stronger power supply Probe End Cap The top or probe end cap consists of a retro reflection probe held in place by the probe retaining nut The retaining nut is threaded on the outside allowing a protecting probe guard or biofouling guard to be easily installed Probe Retaining Nut Retro reflection Probe Endcap Figure A 10 Probe Endcap Figure A 11 Probe Guards Revision A 1 Document Number SAT DN 425 Copyright 2007 by Satlantic Page A 11 SYSTEM SATLANTIC MBARI ISUS V3 SECTION A OVERVIEW The probe is a custom high quality retro reflection pro
92. y Satlantic Page K 6 SYSTEM SATLANTIC MBARI ISUS V3 SECTION K SERIAL COMMUNICATION INTERFACE File Menu The File Menu allows to list and view files on the instruments flash disk and to upload new files or download or erase existing files The menu is identified by the I SUS FILE prompt The available commands are two letter commands where the first letter indicates the type of action to be taken and the second letter indicates the type of file s to apply the command to Available command letters are L List file s 0 Output file s U Upload file s D Download file s E Erase file s Available files to apply the commands to are P Program file i e the firmware operating the ISUS instrument C Coefficient file both extinction and wavelength E Extinction coefficient file s also called calibration file s W Wavelength coefficient file 5 Schedule file L Log file for messages and error logs D Data file of the recorded frames AD All Data files Not all combinations of commands and applicable files are available or meaningful For file selections that are applicable to single files the user will be prompted to choose a specific file The instrument firmware automatically generates and expects certain file name conventions The File Menu restricts the user to specify only file names following these conventions For example extinction coefficient files are always of the form SUSnnn CAL where
93. yperTerminal Connection Description Enter a name for the new connection in the space provided The name should reflect the nature of the connection In this case a good name would be COM1 Direct depending on the serial port used Pressing the OK button then should invoke the Connect To dialog box Connect To 2 Ea S test Enter details for the phone number that you want to dial Country region 1 Area code 302 Phone number Connect using Cancel Figure L 3 HyperTerminal Connect To dialog box Revision Document Number SAT DN 425 Copyright O 2007 by Satlantic Page L 3 SYSTEM SATLANTIC MBARI ISUS V3 SECTION x Manual L USING HYPERTERM As the connection does not involve a modem only the Connect using dropdown box is needed Select the desired serial port After pressing the OK button HyperTerminal will open a communications properties dialog box for the selected serial port COM 1 Properties Port Settings Bits per second 50 2 Data bits B rl Parity Stop bits zl Flow control Restore Defaults Cancel Apply Figure L 4 Serial Port Properties dialog box The parameters of this dialog box must match the specifications of the instrument s telemetry interface The ISUS normally communicates at 38400 bits per second and it uses 8 data bits no parity

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