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1. Computer COM port baud rate data bits and parity for communication between computer and MicroTSG Make the selections in the Configuration Options dialog box e Baud Rate 9600 documented on front cover of this manual e Mode RS 232 Full Duplex Click OK to overwrite an existing configuration file or click Save As to save the configuration as a new filename 4 Click Connect on the Toolbar The display looks like this S gt SBE45 V 1 0 S gt This shows that correct communications between the computer and the MicroTSG has been established If the system does not respond as shown e Press Connect again to attempt to establish communications e Verify the correct instrument was selected in the Configure menu and the settings were entered correctly in the Configuration Options dialog box e Check cabling between the computer and the MicroTSG 5 Display MicroTSG status information by clicking Status on the Toolbar The display looks like this SBE45 V 1 0 SERIAL NO 1258 not logging data sample interval 30 seconds output conductivity with each sample do not output salinity with each sample do not output sound velocity with each sample do not start sampling when power on do not power off after taking a single sample do not power off after two minutes of inactivity A D cycles to average 4 15 Section 3 Preparing the MicroTSG for Deployment Notes See Power Up Jumper Check for a description of A
2. sessoesessossosesesosssosseseoesosesssossse 33 Appendix IV Replacement Parts scssssssscssscsssesessecsseesceees 35 MINER PETA A T A T 36 Table of Contents Warranty Policy Service Information Feedback Questionnaire Calibration Certificates Application Notes Schematics Section 1 Introduction Section 1 Introduction This section includes contact information Quick Start procedure and photos of a standard SBE 45 MicroTSG shipment About this Manual This manual is to be used with the SBE 45 MicroTSG Conductivity and Temperature Monitor It is organized to guide the user from installation through operation and data collection We ve included detailed specifications command descriptions maintenance and calibration information and helpful notes throughout the manual A feedback questionnaire is located at the end of the manual Please take a few moments to let us know how you like the manual contents and format Either use the form or e mail comments to dbresko seabird com Your feedback will help us provide you with a complete and comprehensive User s Manual How to Contact Sea Bird Sea Bird Electronics Inc 1808 136 Place Northeast Bellevue Washington 98005 USA Telephone 425 643 9866 Fax 425 643 9954 E mail seabird seabird com Website http www seabird com Business hours Monday Friday 0800 to 1800 Pacific Standard Time 1600 to 0200 Universal Time Except from April
3. Glossary Anti foul cylinder Expendable device saturated with a tri butyl tin based toxin placed inside the anti foul cup located at the end of the conductivity cell Fouling Biological growth in the conductivity cell during deployment PCB Printed Circuit Board Scan One data sample containing temperature and conductivity as well as derived variables salinity and sound velocity SBE 45 MicroTSG High accuracy conductivity and temperature monitor SEATERM Terminal program used to communicate with the MicroTSG SEATERM can send commands to the SBE 45 to provide status display data acquisition setup data display and capture and diagnostic tests SEATERM is a Windows 95 NT application TCXO Temperature Compensated Crystal Oscillator Triton X 100 Concentrated liquid non ionic detergent used for cleaning the conductivity cell 30 Appendix Functional Description Appendix l Functional Description Sensors The MicroTSG embodies the same sensor elements 3 electrode 2 terminal borosilicate glass cell and pressure protected thermistor previously employed in Sea Bird s modular SBE 3 and SBE 4 sensors in the SEACAT family and in the SBE 37 MicroCAT family Sensor Interface Temperature is acquired by applying an AC excitation to a hermetically sealed VISHAY reference resistor and an ultra stable aged thermistor with a drift rate of less than 0 002 C per year A 24 bit A D con
4. 10 2 Ibs Resolution Typical RMS noise with fixed resistors on the temperature and conductivity inputs NCYCLES Temperature Conductivity Salinity Sound C S m psu Velocity m sec 1 0 000190 0 000014 0 00027 0 00066 2 0 000170 0 000010 0 00016 0 00057 4 0 000150 0 000005 0 00015 0 00055 8 0 000087 0 000005 0 00009 0 00033 16 0 000078 0 000004 0 00007 0 00025 Section 2 Description of the MicroTSG MicroTSG Dimensions in millimeters inches I O Connector ra MCBH4SS 338 6 35 mm 13 3 1 4 in 136 mount hole 5 4 typical Section 2 Description of the MicroTSG Sample Timing Note If the total time required for the sample is greater than the user input sample interval INTERVAL the MicroTSG begins the next sample as soon as it finishes transmitting the current sample The time to acquire the temperature and conductivity varies depending on the mode of operation Polled Sampling Mode Polled Sampling Mode is in effect when e PCB JI jumper is set to Normal or Autopower and e AUTORUN N Time from end of take sample command to beginning of reply seconds NCYCLES 0 1336 0 459 Autonomous Sampling Mode Autonomous Sampling Mode is in effect when e PCB J1 jumper is set to Normal or Autopower and AUTORUN Y and SINGLESAMPLEEN or e PCB JI jumper is set to Normal pins 2 and 3 and AUTORUNEN and SINGLESAMPLE N Time to
5. 225N674 70 and round cavity in housing body 50091 Triton X 100 Conductivity cell cleaning 1 solution 801204 4 pin I O cable From MicroTSG to 1 computer 17130 25 pin to 9 pin adapter Connects I O cable to 1 9 pin COM port on computer 60036 Spare hardware Assorted hardware and O ring kit O rings 35 Index A About Sea Bird 5 Anti Foul Cylinder removal before shipping to Sea Bird 28 Replacing Cylinder 29 Application Notes See attachments at end of manual C Calibration 28 Certificates See attachments at end of manual Cleaning 26 Command Summary 33 Commands Coefficients 25 Descriptions 21 Operating Mode 23 Sampling 24 Setup 22 Status 21 Testing 24 Communication Defaults 15 Corrosion Precautions 26 D Data Output Format 25 Deployment 17 Preparing for 11 Dimensions 9 E Electronics 32 F Feedback Questionnaire See attachment at end of manual Format Data Output 25 Functional Description 31 G Glossary 30 Index J Jumper Power Up 11 16 32 M Maintenance 26 Modes See Sampling Modes P Parts Replacement 35 Q Quick Start 5 R Replacement Parts 35 S Sample Timing 10 Sampling Modes 18 Schematics See attachments at end of manual Service Information See attachment at end of manual Specifications 8 Storage 26 System Description 7 T Testing 12 Timeout Description 20 Troub
6. 5 Verify that the hardware and external fittings are secure 6 Connect the MicroTSG to the computer and power supply See Power and Communications Test in Section 3 Preparing the MicroTSG for Deployment Seawater Intake as close to ship s bow as possible 17 Section 4 Deploying and Operating the MicroTSG Note See Power and Communications Test in Section 3 Preparing the MicroTSG for Deployment for starting SEATERM and configuring it for the MicroTSG capa for Operation Press Connect on the Toolbar to wake up the MicroTSG and get an S gt prompt 2 Establish the sampling scheme after reviewing the information in this section on sampling modes and commands 3 Deploy the MicroTSG Sampling Modes The MicroTSG has three basic sampling modes for obtaining data Polled Sampling Autonomous Sampling and Serial Line Synchronization Sampling However commands and the J1 jumper setting on the MicroTSG s PCB can be used in various combinations to provide a high degree of operating flexibility Shown below are descriptions and examples of the three basic sampling modes Note that the MicroTSG s response to each command is not shown in the examples Review the operation of the basic sampling modes and the commands described in Command Descriptions before setting up your system Polled Sampling Mode The MicroTSG takes one sample of data and sends the data to the computer Examples Polled Sampling Mo
7. and J1 jumper setting as described in table below SINGLESAMPLE x x Y or N This command interacts with AUTORUN and J1 jumper setting as described in table below Note GO Start sampling as defined by If the MicroTSG is sampling data SINGLESAMPLE and INTERVAL and the external voltage is less Only applicable if than 6 15 volts for ten consecutive e AUTORUNEN or scans the MicroTSG halts logging e AUTORUNSY and you and displays WARNING LOW previously sent STOP command to BATTERY VOLTAGE in response stop sampling to the status DS command STOP Stop sampling PCB s AUTORUN SINGLESAMPLE Effect J1 Jumper Normal N YorN Wake up when Enter key pressed while in quiescent sleep mode and wait pins 2 for command and 3 Y N Wake up when Enter key pressed while in quiescent sleep mode and sample at rate specified by INTERVAL To stop sampling and get S gt prompt type STOP and press Enter key Y Y Wake up when Enter key pressed while in quiescent sleep mode take and output a single sample and automatically power off enter quiescent mode To wake up and get S gt prompt type STOP and press Enter key Referred to as Serial Line Sync Mode Autopower N YorN Wake up when power applied and wait for command pins 1 Y N Wake up when power applied and sample at rate specified by INTERVAL and 2 until power removed These are the required settings for running MicroTSG in 3 wire power ground and
8. anti fouling device to inhibit internal fouling A plastic cup with O ring retainer at one end of the cell retains the anti foul material The anti foulant is typically effective for at least one year of deployment The MicroTSG is supplied with SEATERM a powerful terminal program for easy communication and data retrieval SEATERM can send commands to the SBE 45 to provide status display data acquisition setup data display and capture and diagnostic tests Note that SEATERM does not process the data SEATERM is a Windows 95 NT application Section 2 Description of the MicroTSG MicroTSG Specifications Temperature Conductivity Salinity C S m PSU typical Measurement 5 to 35 0to7 Range 0 to 70 mS cm Initial Accuracy 0 002 0 0003 0 005 0 003 mS cm Typical Stability 0 0002 0 0003 0 003 per month 0 003 mS cm Resolution 0 0001 0 00001 0 0002 0 0001 mS cm Sensor 1 to 32 0 to 6 physical Calibration calibration over the Range range 2 6 to 6 S m plus zero conductivity air Counter Quartz TCXO 2 ppm per year aging Time Base 5 ppm vs temperature 5 to 30 C Input Power 8 30 VDC Quiescent Current 10 microamps Operating Current 34 milliamps at 8 VDC 30 milliamps at 12 30 VDC Materials PVC housing Recommended 10 to 30 milliliters second Flow Rate 0 16 to 0 48 gallons minute Maximum Safe 34 5 decibars 50 psi Operating Pressure Weight 4 6 kg
9. steadily It may be necessary to slightly twist the top plate back and forth to loosen it Lift the top plate vertically off the housing body being careful not to hit the conductivity cell on the housing body Do not remove 3 Remove any water from the O ring mating surfaces on the top plate assembly and on the housing with a lint free cloth or tissue 4 If applicable see drawing below for J1 jumper setting information Ji Pin position on J1 CAUTION es ogg e Autopower default Avoid getting anything on the i wigs Ch Nesey 2 PCB which can be damaged by ARE pine anda water or other materials PCB labeled es Reassembly 1 Remove any water from the O rings and mating surfaces with a lint free Note cloth or tissue Inspect the O rings and mating surfaces for dirt nicks and Before delivery a desiccant package cuts Clean as necessary Apply a light coat of O ring lubricant Parker is attached to the PCB with string and the electronics chamber is filled Super O Lube to O rings and mating surfaces with dry Argon These measures help a g prevent condensation If the 2 Align the top plate with the housing body with the conductivity cell s electronics are exposed to the round end cap aligned with the round opening in the housing body atmosphere for more than an hour Slowly lower the top plate checking that it remains aligned with
10. the allow the desiccating process to housing body You will feel resistance as the O rings on the sensor end continue inside the reassembled cap enter the housing housing for one week before performing calibrations or other 3 Re secure the top plate to the housing body with the six 4 inch socket critical work If this is not done head screws lock washers and flat washers conductivity readings may be in error by as much as 0 001 S m 32 A endix IIl Command Summar Appendix Ill Command Summary pins 2 and 3 CATEGORY COMMAND DESCRIPTION Status DS Display status Setup BAUD x x baud rate 1200 2400 4800 9600 19200 or 38400 OUTPUTCOND x x Y default output conductivity S m with data x N do not output conductivity with data OUTPUTSAL x x Y output salinity psu with data x N default do not output salinity with data OUTPUTSV x x Y output sound velocity m sec with data x N default do not output sound velocity with data NCYCLES n n number of A D cycles to average default 4 Qs Quit session and place MicroTSG in quiescent sleep mode Sampling stops Applicable only if PCB J1 jumper in Normal position Operating INTERVAL n Set interval between samples to n seconds maximum Mode 32767 Minimum time between samples determined by NCYCLES desired parameters salinity etc and PCB s J1 baud rate jumper interacts AUTOOFF x Functional only if J1 jumpe
11. to October when we are on summer time 1500 to 0100 Universal Time Quick Start Follow these steps to get a Quick Start using the MicroTSG The manual provides step by step details for performing each task 1 Perform pre check procedures A On the product configuration sheet on the manual front cover check the factory set power up mode jumper setting For a description of how the jumper setting affects operation see Power Up Jumper Check in Section 3 Preparing the MicroTSG for Deployment B Test power and communications see Power and Communications Test in Section 3 Preparing the MicroTSG for Deployment 2 Deploy the MicroTSG see Section 4 Deploying and Operating the MicroTSG A Verify the anti foul cylinder is installed B Install the MicroTSG C Send commands to run the system Unpacking the MicroTSG Section 1 Introduction Shown below is a typical MicroTSG shipment MicroTSG I O Cable Poe Ds Raed pam User Manual Software Spare parts kit Cell cleaning solution 9 pin adapter Triton X 100 Section 2 Description of the MicroTSG Section 2 Description of the MicroTSG This section describes the functions and features of the MicroTSG including specifications and dimensions System Description Note See SEATERM s help files for detailed information on the use of the program The SBE 45 MicroTSG is an externally powered high accuracy conductivity and temper
12. transmit configuration Y Y Wake up when power applied and take and output a single sample Wait for another command until power removed 23 Section 4 Deploying and Operating the MicroTSG Sampling Commands These commands are used to request a sample from the MicroTSG The MicroTSG stores data for the most recent sample in its RAM The MicroTSG does not automatically power off after executing these commands Do not send these commands if the MicroTSG is sampling data at pre programmed intervals defined by INTERVAL and SINGLESAMPLE TS TSR SLT TH SH Take sample hold converted data in RAM output converted data Take sample hold raw data temperature and conductivity only in RAM output raw data Send last sample from RAM output converted data then take new sample and hold converted data in RAM Take sample hold converted data in RAM Send held converted data from RAM Testing Commands TT TC TTR TCR Measure temperature for 100 samples or until Esc key is pressed output converted data Measure conductivity for 100 samples or until Esc key is pressed output converted data Measure temperature for 100 samples or until Esc key is pressed output raw data Measure conductivity for 100 samples or until Esc key is pressed output raw data 24 Section 4 Deploying and Operating the MicroTSG Coefficients Command Notes 1 See individual Co
13. A3 F Temperature A3 performed CCALDATE S Conductivity calibration date Calibration CG F Conductivity G coefficients are CH F Conductivity H initially factory CIJ F Conductivity I set and should CJ F Conductivity J oe WBOTC F Conductivity wbotc Certificates CTCOR F Conductivity ctcor shipped with CPCOR F Conductivity cpcor MicroTSGs 34 Appendix IV Replacement Parts Appendix IV Replacement Parts Part Part Application Description Quantity in Number MicroTSG 30593 Screw 4 20 x 13 4 Secures top and bottom 12 socket stainless steel plates to housing body 30254 Washer 1 4 split ring For screw 30593 secures top 12 lock stainless steel and bottom plates to housing body 30570 Washer 4 flat For screw 30593 secures top 12 stainless steel and bottom plates to housing body 24173 Anti foul cylinder Anti foul poison tube 1 inserted into anti foul cup 30507 O ring Seal for conductivity cell 1 Parker 2 206N674 70 jend secures anti foul cylinder in cup 31057 O ring Round seal between bottom 1 Parker 2 229N674 70 plate and housing 31060 O ring Rectangular seal between 1 Parker 2 225N674 70 bottom plate and housing 31058 O ring Large seal for top plate to 1 Parker 2 239N674 70 housing body 30818 O ring Seal for top plate to housing 2 Parker 2 203N674 70 body center screws 31060 O ring Seal between sensor end cap 2 Parker 2
14. AL Y v sound velocity meters second data sent only if OUTPUTSV Y All data is separated with a comma and a space Example Sample data output when OUTPUTCOND Y OUTPUTSALEN and OUTPUTSV N 23 7658 0 00019 temperature conductivity Section 5 Routine Maintenance and Calibration Section 5 Routine Maintenance and Calibration This section reviews corrosion precautions cell cleaning and storage sensor calibration and replacement of the anti foul cylinder The accuracy of the MicroTSG is sustained by the care and calibration of the sensors and by establishing proper handling practices Corrosion Precautions All hardware exposed to seawater is titanium the housing is plastic No corrosion precautions are required The MicroTSG should be cleaned as described below after use and prior to storage Cleaning and Storage CAUTION The MicroTSG s conductivity cell is shipped dry to prevent freezing in shipping and depletion of the anti foul cylinder Do not store the MicroTSG with water in the conductivity cell Freezing temperatures for example in Arctic environments or during air shipment can break the cell if it is full of water Screw Drain typical plug Conductivity cell Flushing chamber Clean the MicroTSG and conductivity cell e Monthly during sustained use e Before periods of non use If the cell is not rinsed between usage salt crystals may form on the
15. MicroTSG to Sea Bird for internal cleaning and recalibration Align the bottom plate with the housing body ensuring the end of the anti foul cylinder cup is aligned with the conductivity cell Slowly position the bottom plate on the housing Re secure the bottom plate to the housing body with the six 4 inch socket head screws lock washers and flat washers Reinstall the drain plug in the bottom plate If the data still looks incorrect after cleaning it may be caused by a problem with the electrical connections a problem with the PCB internal fouling in the conductivity cell that was not removed by flushing sensors that need to be recalibrated 27 Sensor Calibration Note Do not disassemble the MicroTSG to send the sensors to Sea Bird for recalibration Package the entire MicroTSG for shipment after removing the anti foul cylinder see Replacing Anti Foul Cylinder Store the anti foul cylinder for future use Section 5 Routine Maintenance and Calibration Sea Bird sensors are calibrated by subjecting them to known physical conditions and measuring the sensor responses Coefficients are then computed which may be used with appropriate algorithms to obtain engineering units The conductivity and temperature sensors on the MicroTSG are supplied fully calibrated with coefficients printed on their respective Calibration Certificates see back of manual These coefficients have been stored in the Micr
16. SBE 45 MicroTSG Thermosalinograph Conductivity and Temperature Monitor with RS 232 Interface User s Manual Sea Bird Electronics Inc 1808 136 Place NE Bellevue Washington 98005 USA Tel 425 643 9866 Manual Version 003 8 30 00 Fax 425 643 9954 Firmware Version 1 0 Limited Liability Statement Extreme care should be exercised when using or servicing this equipment It should be used or serviced only by personnel with knowledge of and training in the use and maintenance of oceanographic electronic equipment SEA BIRD ELECTRONICS INC disclaims all product liability risks arising from the use or servicing of this system SEA BIRD ELECTRONICS INC has no way of controlling the use of this equipment or of choosing the personnel to operate it and therefore cannot take steps to comply with laws pertaining to product liability including laws which impose a duty to warn the user of any dangers involved in operating this equipment Therefore acceptance of this system by the customer shall be conclusively deemed to include a covenant by the customer to defend indemnify and hold SEA BIRD ELECTRONICS INC harmless from all product liability claims arising from the use or servicing of this system Table of Contents Table of Contents Table Of Contents lt asssssesisssssscsczacscissioosssssesetasestsastsnsiesecosveocsncbesevesesienses 3 Section 1 Introduction sosssscssssecscucteiucoveceausecessdcsvessisesuetasedovestiacsseass
17. SG has an anti foul cup inside the housing New MicroTSGs are WARNING shipped with an anti foul cylinder pre installed in the cup 1 Anti foul cylinders contain tri butyl tin oxide TBTO Handle the cylinder with gloves If the The anti foul cylinder has a useful deployment life in the MicroTSG of cylinder comes in contact with approximately 6 months Sea Bird recommends that you keep track of how skin wash with soap and long the cylinder has been deployed to allow you to purchase and replace the water immediately Dispose of cylinder when needed gloves properly Refer to the Material Safety Data Sheet in the shipment for details 1 Anti foul cylinders are not classified by the U S DOT or the IATA as hazardous material in the quantities used by Sea Bird Handling the cylinder with gloves follow this procedure 1 Keeping the MicroTSG in an upright position remove the drain plug from the housing s bottom plate Allow any water to drain out and remove any sediment or debris from the drain before proceeding 2 Remove the bottom plate A Remove the six 4 inch socket head screws lock washers and flat washers securing the bottom plate to the housing body Hold the mene Drain bottom plate as you remove the hardware to prevent it from falling la plug B Pull the bottom plate straight down from the housing body being careful not to damage the conductivity cell which sits in the housing O ring anti foul at t
18. acquire temperature and conductivity seconds NCYCLES 0 1336 0 287 Serial Line Sync Mode Serial Line Sync Mode is in effect when e PCB JI jumper set to Normal pins 2 and 3 and e AUTORUN Y and SINGLESAMPLE Y Time from wake up to beginning of reply seconds NCYCLES 0 1336 1 643 Total Sampling Time Once temperature and conductivity are acquired the time to calculate the desired parameters is not a function of the mode of operation e Time to compute temperature 8 8 msec e Time to compute conductivity 15 4 msec e Time to compute salinity 83 msec e Time to compute sound velocity 35 msec Total time required for sample time to acquire temperature and conductivity time to compute selected parameters time to transmit computed parameters dependent on baud rate 10 Section 3 Preparing the MicroTSG for Deployment Section 3 Preparing the MicroTSG for Deployment This section describes the pre check procedure for preparing the MicroTSG for deployment Checking the power up mode jumper setting and testing power and communications are discussed Power Up Jumper Check The MicroTSG s Printed Circuit Board PCB has a jumper that controls how the MicroTSG wakes up e Jumper set for Autopower default The MicroTSG wakes up when power is applied System capability is dependent on the external wiring configuration Note gt Three wires This configuration is useful in simple systems
19. ady to stop sampling or change operation Press Enter key several times to get S gt prompt S gt STOP S gt Enter desired commands Timeout Description The MicroTSG has a timeout algorithm when jumpered in the Normal configuration PCB J1 pins 2 and 3 If the MicroTSG does not receive a command or sample data for two minutes and AUTOFF Y it powers down its communication circuits This places the MicroTSG in quiescent mode drawing minimal current To re establish control wake up press Connect on the Toolbar or the Enter key The system responds with the S gt prompt 20 Section 4 Deploying and Operating the MicroTSG Command Descriptions This section describes commands and provides sample outputs See Appendix III Command Summary for a summarized command list When entering commands Input commands to the MicroTSG in upper or lower case letters and register commands by pressing the Enter key The MicroTSG sends CMD if an invalid command is entered If the system does not return an S gt prompt after executing a command press the Enter key to get the S gt prompt If in quiescent mode re establish communications by pressing Connect on the Toolbar or the Enter key to get an S gt prompt Status Command Note If the external voltage is below 6 15 volts the following displays in response to the status command WARNING LOW BATTERY VOLTAGE DS Display operating statu
20. and you previously sent STOP command to stop sampling STOP Stop sampling 33 Appendix Ill Command Summary CATEGORY COMMAND DESCRIPTION Sampling TS Take sample hold converted data in MicroTSG s RAM output converted data Do not send TSR Take sample hold raw data in MicroTSG s RAM these output raw data commands if SLT Send converted data from last sample in MicroTSG s MicroTSG is RAM then take new sample and hold converted data sampling data at in RAM pre TH Take sample hold converted data in MicroTSG s programmed RAM intervals SH Send held converted data from MicroTSG s RAM Testing TT Measure temperature for 100 samples or until Esc key is pressed output converted data TC Measure conductivity for 100 samples or until Esc key is pressed output converted data TTR Measure temperature for 100 samples or until Esc key is pressed output raw data TCR Measure conductivity for 100 samples or until Esc key is pressed output raw data Coefficients DC Display calibration coefficients all coefficients and F floating dates listed below are included in display Use point number individual commands below to modify a particular S string with coefficient or date no spaces TCALDATE S Temperature calibration date TAO F Temperature AO Dates shown TAI1 F Temperature A1 are when TA2 F Temperature A2 calibrations weie T
21. are entered Apply power and press Connect on Toolbar to wake up S gt SINGLESAMPLE N S gt INTERVAL 20 S gt AUTORUN Y Remove power When ready to begin sampling Press Capture on Toolbar to capture data to a file program requests file name for data to be stored Apply power to wake up sampling begins automatically When ready to stop sampling Remove power 19 Section 4 Deploying and Operating the MicroTSG Serial Line Synchronization Mode Serial Line Sync In Serial Line Sync Mode a simple pulse a single character on the RS 232 line causes the MicroTSG to wake up take and output a single sample and automatically power off enter quiescent mode This mode is enabled if AUTORUN Y SINGLESAMPLE Y and the PCB s J1 jumper is in the Normal position pins 2 and 3 Example Serial Line Sync Mode J1 jumper in Normal position pins 2 and 3 Set up to take a sample upon receipt of any character and then automatically power off Send power off command to MicroTSG after all parameters are entered system automatically wakes up and powers down for each sample upon receipt of a character Press Connect on Toolbar to wake up S gt SINGLESAMPLE Y S gt AUTORUN Y S gt QS When ready to take a sample repeat as desired Press Capture on Toolbar to capture data to a file program requests file name for data to be stored Press Enter key to wake up sample and power off When re
22. ature monitor designed for shipboard determination of sea surface pumped water conductivity and temperature Communication with the MicroTSG is over an internal 3 wire RS 232C link providing real time data transmission Commands can be sent to the MicroTSG to provide status display data acquisition setup data retrieval and diagnostic tests User selectable operating modes include e Polled sampling The MicroTSG takes one sample and sends the data to the computer e Autonomous sampling At pre programmed intervals the MicroTSG samples and sends the data to the computer The MicroTSG does not enter quiescent sleep mode between samples e Serial Line Sync A pulse on the serial line causes the MicroTSG to wake up sample and enter quiescent mode automatically Calibration coefficients stored in EEPROM allow the MicroTSG to transmit data in engineering units The MicroTSG retains the temperature and conductivity sensors used in the SBE 21 Thermosalinograph but has improved acquisition electronics that increase accuracy and resolution and lower power consumption The MicroTSG s aged and pressure protected thermistor has a long history of exceptional accuracy and stability typical drift is less than 0 002 C per year Electrical isolation of the conductivity electronics eliminates any possibility of ground loop noise The MicroTSG s internal field conductivity cell is unaffected by external fouling and uses an expendable
23. ctor C Place the locking sleeve over the connector Tighten the sleeve finger tight only Do not overtighten the locking sleeve and do not use a wrench or pliers Connect the I O cable connector to your computer s serial port A 25 to 9 pin adapter is supplied for use if your computer has a 9 pin serial port Connect the I O cable connector s red and black wires to a power supply 8 30 VDC Power Pin 4 e ransmit Pin3 Orientation Pin e Ground Pin 1 Receive Pin 2 Ground pin Computer data common pin 1 Receive pin RS 232C receive data transmitted from computer pin 2 Transmit pin RS 232C transmit from MicroTSG to computer pin 3 Power pin 8 30 VDC pin 4 12 Section 3 Preparing the MicroTSG for Deployment Test Proceed as follows 1 Double click on the SEATERM icon If this is the first time the program Note See SEATERM s help files for detailed information on the use of the program Note There is at least one way and as many as three ways to enter a command Manually type a command in Command Data Echo Area Use a menu to automatically generate a command Use a Toolbar button to automatically generate a command Note Once the system is configured and connected Steps 3 and 4 below to update the Status bar e onthe Toolbar click Status or e from the Utilities menu select Instrument Status SEATERM sends the status command which displays in the Command Da
24. culate and output sound velocity n number of A D cycles to average default 4 Increasing NCYCLES increases measurement resolution and time required for measurement See Sample Timing in Section 2 Description of the MicroTSG Quit session and place MicroTSG in quiescent sleep mode Sampling stops Applicable only if PCB J1 jumper is in Normal position 22 Section 4 Deploying and Operating the MicroTSG Operating Mode Commands Operating Mode commands configure the MicroTSG s response upon waking up and direct the MicroTSG to sample data once or at pre programmed intervals INTERVAL n Set interval between samples to n seconds Note f maximum 32767 seconds MicroTSG If the total time required for the a samples at this interval and does not enter sample is greater than INTERVAL quiescent sleep mode between samples Minimum time between samples the MicroTSG begins the next sample as soon as it finishes 7 transmitting the current sample determined by NCYCLES desired calculated parameters salinity etc and baud rate see Sample Timing in Section 2 Description of the MicroTSG AUTOOFF x Functional only if J1 jumper on PCB is in Normal position x Y Automatically power off enter quiescent mode if 2 minutes have elapsed without receiving a command or without sampling data x N Do not automatically power off AUTORUN x x Y or N This command interacts with SINGLESAMPLE
25. de Example 1 J1 jumper in Normal position pins 2 and 3 Wake up MicroTSG Set up MicroTSG to wait for command each time MicroTSG wakes up and send salinity with data Send power off command after all parameters are entered Press Connect on Toolbar to wake up S gt AUTORUN N S gt OUTPUTSAL Y S gt QS When ready to take a sample wake up MicroTSG Command MicroTSG to take a sample send sample data to computer and output converted data Send power off command when done Press Connect on Toolbar to wake up Press Capture on Toolbar to capture data to a file program requests file name for data to be stored S gt TS S gt QS Example 2 J1 jumper in Autopower position pins and 2 Wake up MicroTSG Set up MicroTSG to wait for command each time MicroTSG wakes up and send salinity with data Remove power after all parameters are entered Apply power to wake up S gt AUTORUN N S gt OUTPUTSAL Y Remove power When ready to take a sample wake up MicroTSG Command MicroTSG to take a sample send sample data to computer and output converted data Remove power when done Apply power to wake up Press Capture on Toolbar to capture data to a file program requests file name for data to be stored S gt TS Remove power 18 Section 4 Deploying and Operating the MicroTSG Autonomous Sampling Mode The MicroTSG samples data at pre programmed intervals defined by the INTERVAL command and s
26. eee ee eeceseceseceseceeeceecaeeeseseeeeeeeeeeees 19 Serial Line Synchronization Mode Serial Line Sync eee 20 Timeout DeScription serei eee cee cece cseeceeeeeeeeeeeeeeeecesecesecsecaecsaecsaecsaesaeeens 20 Command Descriptions 0 0 0 eee cee cee cseeeseeeeeeeeeeeeeeeeceeeeseceseceaecsaecsaessaeeneeens 21 Data Output F rmate nane eii e a ation bse 25 Section 5 Routine Maintenance and Calibration sssssssees 26 Corrosion Precautions reaa aaa A EE EENAA LEKSARA EA EEEO seen gars iicasavnsatve 26 Cleaning and Storage s scssscisctsscesscs sssascetsstasbsebagesegs ieee sseassnastes cos cesetszecagscpeeeedes 26 Sensor Calibrations eea e n E E E EE E 28 Conductivity Sensor Calibration essseeseseeeseseeeestsrreresresrrsrerrsserrreresreee 28 Temperature Sensor Calibration eeeeseeesesseseesrsrreresresrrsrersserrrereseese 28 Replacing Anti Foul Cylinder s sesesesseeeseeersseesssreerssrsresresreerssrerrsserrrsresrene 29 GIOSSA Y seks sseccsscostsscelesesccssouscdssndssescvosesabeecssbustonesecevesssesssesesurcvanastentesse 30 Appendix I Functional Description esessseseeessosorseseseseserercroreeeeeesoreee 31 Senso e e E E E S E EE E E NN 31 Sensor Interface mirn E E E EE E EAE N S 31 Appendix II Electronics Disassembly Reassembly seeeee 32 Disassembly ceveesvetoneiiovsieerneseat e E E E beaten See netsee ies A E SEs 32 Reassembly rannan a E E R S E S 32 Appendix III Command Summary
27. efficient Commands below for definitions of the data in the example 1 Dates shown are when calibrations were performed Calibration coefficients are initially factory set and should agree with Calibration Certificates shipped with MicroTSGs Note F floating point number S string with no spaces DC Display calibration coefficients Equivalent to Coefficients button on Toolbar Example Display coefficients for MicroTSG S gt DC SBE45 V1 0 0011 temperature 08 apr 96 TAO 9 420702e 05 TA1 2 937924e 04 TA2 3 739471e 06 TA3 1 909551e 07 conductivity 09 apr 96 G 1 036689e 00 H 1 444342e 01 I 3 112137e 04 J 3 005941e 05 CPCOR 9 570001e 08 CTCOR WBOTC 3 250000e 06 1 968100e 05 The individual Coefficient Commands listed below are used to modify a particular coefficient or date TCALDATE S Temperature calibration date TAO F Temperature AO TA1 F Temperature A1 TA2 F Temperature A2 TA3 F Temperature A3 CCALDATE S Conductivity calibration date CG F Conductivity G CH F Conductivity H CI F Conductivity I CJ F Conductivity J WBOTC F Conductivity wbotc CTCOR F Conductivity ctcor CPCOR F Conductivity cpcor Data Output Format The output data format is ttt tttt cc ccccc SSS SSSS VVVVV VVV where t temperature degrees Celsius ITS 90 c conductivity S m data sent only if OUTPUTCOND Y s salinity psu data sent only if OUTPUTS
28. ends the data to the computer The MicroTSG does not enter quiescent sleep mode between samples Examples Autonomous Sampling Mode Example 1 J1 jumper in Normal position pins 2 and 3 AUTORUN Y SINGLESAMPLE N Set up to take samples every 20 seconds Send power off command after all parameters are entered Press Connect on Toolbar to wake up S gt SINGLESAMPLE N S gt INTERVAL 20 S gt AUTORUN Y S gt QS When ready to begin sampling Press Capture on Toolbar to capture data to a file program requests file name for data to be stored Press Connect on Toolbar to wake up sampling begins automatically When ready to stop sampling and power off Press Enter key to get S gt prompt S gt STOP S gt QS Example 2 J1 jumper in Normal position pins 2 and 3 AUTORUNEN SINGLESAMPLEEN Set up to take samples every 20 seconds Send power off command after all parameters are entered Press Connect on Toolbar to wake up S gt SINGLESAMPLE N S gt INTERVAL 20 S gt AUTORUN N S gt QS When ready to begin sampling Press Capture on Toolbar to capture data to a file program requests file name for data to be stored Press Connect on Toolbar to wake up S gt GO When ready to stop sampling and power off Press Enter key to get S gt prompt S gt STOP S gt QS Example 3 J1 jumper in Autopower position pins and 2 Set up to take samples every 20 seconds Remove power after all parameters
29. he end of the anti foul cup cylinder and cup 3 Remove the anti foul cylinder A Place the bottom plate on a horizontal surface Remove the small O ring securing the anti foul cylinder in the anti foul cup B Remove the old anti foul cylinder If it is difficult to remove use needle nose pliers and carefully break up the material 4 Clean the bottom plate assembly A Remove the two O rings on the bottom plate Put the O rings aside being careful to protect them from damage or contamination B Rinse the bottom plate and flush the inside of the anti foul cup and post with fresh water to remove sediment or debris C Remove water from the O rings and the bottom plate with a lint free cloth or tissue D Inspect the O rings and mating surfaces for dirt nicks and cuts Clean as necessary Apply a light coat of O ring lubricant Parker Super O Lube to the O rings and mating surfaces E Replace the O rings on the bottom plate Anti foul cylinder 5 Place the new anti foul cylinder in the cup and replace the O ring 6 Reinstall the bottom plate A Align the bottom plate with the housing body ensuring the end of the anti foul cylinder cup is aligned with the conductivity cell Slowly position the bottom plate on the housing B Re secure the bottom plate to the housing body with the six 4 inch socket head screws lock washers and flat washers C Reinstall the drain plug in the bottom plate 29 Glossar
30. inder pre installed Anti foul Verify that the cylinder is in the anti foul cup see Section 5 Routine cylinder Maintenance and Calibration for access to and replacement of the anti foul cylinder Top plate 2 Mount the MicroTSG with the electrical connector at the top using the four 4 inch bolt holes on the sides Provide clearance as follows e Bottom 152 mm 6 inches clearance for removal of the bottom plate to allow access for replacing the anti foul cylinder and Bolt hole cleaning typical e Top 305 mm 12 inches clearance for removal of the top plate to allow access for removing sensors and electronics Bottom plate e Sides small clearance by using washers with the mounting hardware to prevent binding when removing the top or bottom plate 3 Install the I O cable A Lightly lubricate the sides of the rubber prongs on the cable connector with silicone grease DC 4 or equivalent B Install the cable connector aligning the long pin with the small hole on the MicroTSG s bulkhead connector C Place the locking sleeve over the connector Tighten the sleeve finger tight only Do not overtighten the locking sleeve and do not use a wrench or pliers I O cable connector Locking E Ne IBM compatible 4 Install the piping connections to the MicroTSG The housing is tapped Computer with s inch U S standard NPT threads Nylon hose barb fittings for 2 inch tubing are provided
31. leshooting 26 U Unpacking MicroTSG 6 W Warranty See attachment at end of manual 36
32. oTSG s EEPROM We recommend that MicroTSGs be returned to Sea Bird for calibration Conductivity Sensor Calibration The conductivity sensor incorporates a fixed precision resistor in parallel with the cell When the cell is dry and in air the sensor s electrical circuitry outputs a frequency representative of the fixed resistor This frequency is recorded on the Calibration Certificate and should remain stable within 1 Hz over time The primary mechanism for calibration drift in conductivity sensors is the fouling of the cell by chemical or biological deposits Fouling changes the cell geometry resulting in a shift in cell constant Accordingly the most important determinant of long term sensor accuracy is the cleanliness of the cell We recommend that the conductivity sensors be calibrated before and after deployment but particularly when the cell has been exposed to contamination by oil slicks or biological material Temperature Sensor Calibration The primary source of temperature sensor calibration drift is the aging of the thermistor element Sensor drift will usually be a few thousandths of a degree during the first year and less in subsequent intervals Sensor drift is not substantially dependent upon the environmental conditions of use and unlike platinum or copper elements the thermistor is insensitive to shock 28 Section 5 Routine Maintenance and Calibration Replacing Anti Foul Cylinder The MicroT
33. pen end of the cell If fouling remains in the conductivity cell after these procedures return the MicroTSG to Sea Bird for internal cleaning and recalibration WARNING Use protective eyewear and wear gloves when working with hydrochloric acid Avoid breathing the acid fumes Dilute and rinse any spills with fresh water or neutralize large spills with baking soda sodium bicarbonate powder Produce 1 normal hydrochloric acid as follows 1 Start with muriatic acid which is 31 45 HCI 20 degrees Baume by weight 1 Dilute 0 1 liters of muriatic acid into 0 9 liters of fresh water Flush through ZA anti foul cylinder cup Step 3 Clean Flushing Chamber A Gently spray fresh water up into the chamber to remove any fine deposits inside the housing Be careful not to hit the conductivity cell with the spray hose Step 4 Flush Inside of Conductivity Cell A Remove the external plumbing connecting the seawater intake and drain lines to the MicroTSG Clean the inside of the conductivity cell with a series of slow back flushes into the OUT port reverse of the normal operation flow Collect the drainage in a bucket held below the open housing i Fresh water to remove debris and deposits ii 1 liter of 1 normal hydrochloric acid slow flow through the cell iii 10 liters of fresh water to rinse the acid iv optional 1 liter of 1 solution of Triton X 100 Triton X 100 is included with shi
34. platinized electrode surfaces When the instrument is used next sensor accuracy may be temporarily affected until these crystals dissolve e Ifthe data looks incorrect gt Unusually noisy data may be caused by debris going through the cell gt Unusually smooth data may be caused by a blockage in the flow path or in the cell gt Shifted data may be caused by fouling inside the cell Follow this cleaning procedure rae 1 Clean Out Drain Keeping the MicroTSG in an upright position remove the drain plug from the housing s bottom plate B Allow any water to drain out and remove any sediment or debris from the drain Step 2 Inspect Flushing Chamber A Remove the bottom plate i Remove the six 4 inch socket head screws lock washers and flat washers securing the bottom plate to the housing body Hold the bottom plate as you remove the hardware to prevent the plate from falling ii Pull the bottom plate straight down from the housing body being careful not to damage the conductivity cell which sits in the housing B Use a flashlight to inspect the flushing chamber and conductivity cell for debris or fine deposits If this is a routine monthly maintenance and there is no evidence of debris or fine deposits proceed to Step 5 Clean Bottom Plate Assembly 26 Section 5 Routine Maintenance and Calibration ke Do not put a brush or any object inside the cell 1 Do not spray any solutions directly into the o
35. pment Rinse the exterior of the instrument to remove any spilled acid from the surface If the MicroTSG is being stored gently blow dry the conductivity cell and flushing chamber Reinstall the external plumbing connecting the seawater intake and drain lines to the MicroTSG SEP 5 Clean Bottom Plate Assembly WARNING Wear gloves if touching or handling the anti foul cylinder Remove the two O rings on the bottom plate Put the O rings aside being careful to protect them from damage or contamination Flush the anti foul cylinder cup on the bottom plate with fresh water to remove any debris or fine deposits See Replacing Anti Foul Cylinder for details on handling the anti foul cylinder if you want to replace it Rinse the bottom plate with fresh water Remove water from the O rings and the bottom plate with a lint free cloth or tissue Inspect the O rings and mating surfaces for dirt nicks and cuts Clean as necessary Apply a light coat of O ring lubricant Parker Super O Lube to the O rings and mating surfaces Replace the O rings on the bottom plate SER 6 Reinstall Bottom Plate CAUTION 1 If you remove sensors and electronics from the housing to troubleshoot avoid getting anything on the PCB which can be damaged by water or other materials See Appendix II Electronics Disassembly Reassembly for details 1 Do not put any object inside the conductivity cell to clean it Return the
36. r in Normal position with these x Y Power off enter quiescent mode if 2 minutes cominands have elapsed without receiving a command or without e Autopower sampling data pins 1 and 2 x N Do not automatically power off Normal J1 jumper Normal Wake up when Enter key pressed while in quiescent AUTORUN N sleep mode wait for a command SINGLESAMPLE YorN J1 jumper Normal Wake up when Enter key pressed while in quiescent AUTORUN Y sleep mode sample at rate specified by SINGLESAMPLE N INTERVAL To stop sampling and get S gt prompt type STOP and press Enter key J1 jumper Normal AUTORUN Y SINGLESAMPLE Y Wake up when Enter key pressed while in quiescent sleep mode take and output a single sample automatically power off To wake up and get S gt prompt type STOP and press Enter key J1 jumper Autopower Wake up when power applied wait for a command AUTORUN N SINGLESAMPLE YorN J1 jumper Autopower Wake up when power applied sample at rate specified AUTORUN Y by INTERVAL until power removed These are the SINGLESAMPLE N required settings for running MicroTSG in 3 wire power ground and transmit configuration J1 jumper Autopower AUTORUN Y SINGLESAMPLE Y Wake up when power applied take and output a single sample Wait for another command until power removed GO Start sampling as defined by SINGLESAMPLE and INTERVAL Applicable if AUTORUNEN or AUTORUN SY
37. r setting Communications Test set the appropriate communications settings wake up the MicroTSG with the Connect button and then enter the QS command after the S gt prompt The response indicates whether the jumper is in the Normal or Autopower configuration gt Autopower system returns S gt prompt indicating that the MicroTSG is not in quiescent sleep mode gt Normal system does not return S gt prompt indicating that the MicroTSG is in quiescent sleep mode 11 Section 3 Preparing the MicroTSG for Deployment Power and Communications Test The power and communications test will verify that the system works prior to deployment I O Cable connector Locking sleeve Note Refer to the Schematics at the back of the manual for I O Cable pin outs Te 1 st Set Up If not already installed install SEATERM on your computer using the supplied software A Insert Disk 1 in your floppy disk drive B Double click on Setup exe C Follow the dialog box directions to install the software Note It is possible to use the MicroTSG without SEATERM by sending direct commands from a dumb terminal or terminal emulator such as Windows HyperTerminal Install the I O cable A Lightly lubricate the sides of the rubber prongs on the cable connector with silicone grease DC 4 or equivalent B Install the cable connector aligning the long pin with the small hole on the MicroTSG s bulkhead conne
38. s firmware version serial number logging status sample interval time conductivity output with each sample salinity output with each sample sound velocity output with each sample start sampling when power on power off after taking single sample power off after 2 minutes of inactivity A D cycles to average per sample Logging status can be logging data not logging data or unknown status Equivalent to Status button on Toolbar Example Display status for MicroTSG S gt DS SBE45 V 1 0 SERIAL NO 1258 not logging data sample interval 10 seconds output conductivity with each sample do not output salinity with each sample do not output sound velocity with each sample do not start sampling when power on do not power off after taking a single sample do not power off after two minutes of inactivity A D cycles to average 4 21 Section 4 Deploying and Operating the MicroTSG Setup Commands BAUD x OUTPUTCOND x OUTPUTSAL x OUTPUTSV x NCYCLES n QS x baud rate 1200 2400 4800 9600 19200 or 38400 x Y default calculate and output conductivity S m x N do not calculate and output conductivity x Y calculate and output salinity psu x N default do not calculate and output salinity x Y calculate and output sound velocity m sec using Chen and Millero formula UNESCO Technical Papers in Marine Science 44 x N default do not cal
39. ta Echo Area and updates the Status bar is used the configuration dialog box appears 5657 erm The conlgguralien file Saaf aimn dig path Pitat ete the lolloeing Mug indo main IMPORTANT To complete Habur tte ihe Genhgqueabion welling bor ete Select the instrument type SBE 45 TSG and the computer COM port for communication with the MicroTSG Click OK The main screen looks like this Toolbar Command Data Echo Area Status bar Capture to file status grayed out if not capturing ae Wa Ty BOLL Instrument Baud rate data bits EPROM version stop bits and parity Menus Contains tasks and frequently executed instrument commands Toolbar Contains buttons for frequently executed tasks and instrument commands All tasks and commands accessed through the Toolbar are also available in the Menus To display or hide the Toolbar select View Toolbar in the View menu Grayed out Toolbar buttons are not applicable Command Data Echo Area Echoes a command executed using a Menu or Toolbar button as well as the instrument s response Additionally a command can be manually typed in this area from the available commands for the instrument Note that the instrument must be awake for it to respond to a command use the Connect button on the Toolbar to wake up the instrument Status bar Provides status information To display or hide the Status bar select View Status bar in
40. the View menu 13 Following are the Toolbar keys applicable to the MicroTSG Section 3 Preparing the MicroTSG for Deployment Toolbar Keys Description Equivalent Command Connect Re establish communications with MicroTSG Computer responds with S gt prompt press Enter key Status Display instrument status DS Coefficients Display calibration coefficients DC Capture Capture instrument responses on screen to file As MicroTSG has no internal memory you must capture before sampling begins to save data for future review and processing File has CAP extension Press Capture again to turn off capture Capture status displays in Status bar Diagnostics Perform one or more diagnostic tests on MicroTSG Diagnostic test s accessed in this manner are non destructive they do not write over any existing instrument settings DS DC TS and TSR Disconnect Free computer COM port used to communicate with MicroTSG COM port can then be used by another program Note that MicroTSG must be connected to COM port for data to be obtained See Command Descriptions in Section 4 Deploying and Operating the MicroTSG 14 Section 3 Preparing the MicroTSG for Deployment 3 Inthe Configure menu select SBE 45 TSG The dialog box looks like this r SHE 45 Configuration Option 5 Interface for communication between computer and MicroTSG
41. us 5 About this Manuali ester nene n e e e e lahe iet 5 How to Contact Sea Bird rearen nhen oe a n a e 5 QUICK S tarts EE ED AEE EAEE AE ATEA ESEA EEE E TEES 5 Unpacking the Micro TS Grein fesast tase foes ersovtoeden ish ootesbenes Ea RE 6 Section 2 Description of the MicroTSG cscsssssssssssssssessessesees 7 System Description iesea cee sseececguanseasatcaeeeea ERE TATO E EI e Et 7 MicroTSG Specifications sesseeseseesseseerersreresrsrererereonersretereesensreresesrersre reses 8 MicroTSG Dimensions in millimeters incheS cscccssssececseseecesseeeeseneeees 9 Sample TIMMINS ae eS eS 10 Total Sampling Time sssini iset hesebecsspevstauebouscbants eose Eresia 10 Section 3 Preparing the MicroTSG for Deployment 000 11 Power Up Jumper Checker nionee asie reie ear a keresi 11 Power and Communications Test ceccesccessneecsseceeeeecsaeceeneecnaeceeneecaeeeeneees 12 Test Set Up reir ce cessccsssd seas E R E shvesseenevisbes E E Heedaaes 12 Tesh eene tra er E Ta E E A EGO A ETAREN 13 Section 4 Deploying and Operating the MicroTSG s000 17 Deployment seess ena cvs a ai a a e a A ee a a 17 Physical Handli geienen nari a i aa a eao 17 Set Up for Operation reniris ee e iei eenei ea oereide ieioea 18 Sampling M des aseet ceset eh ects ok ohh Gs Ce ee eTA eE e esses 18 Polled Sampling Mode eee ee eecesecesecesecssecseecseesseseaeseeeesseeseeeseensees 18 Autonomous Sampling Mode
42. utopower and Normal See Appendix II Electronics Disassembly Reassembly to access the PCB and move the jumper 6 Command the MicroTSG to take a sample by typing TS and pressing the Enter key The display looks like this Gf output conductivity with each sample do not output salinity with each sample and do not output sound velocity with each sample displayed in response to the status command in Step 5 23 7658 0 00019 where 23 7658 temperature in degrees Celsius 0 00019 conductivity in S m These numbers should be reasonable i e room temperature and zero conductivity Command the MicroTSG to go to sleep quiescent mode by typing QS and pressing the Enter key The response indicates whether the PCB s J1 jumper is in the Normal or Autopower configuration e Autopower system returns S gt prompt e Normal system does not return S gt prompt If necessary remove the PCB and move the jumper to the desired pins The MicroTSG is ready for deployment 16 Section 4 Deploying and Operating the MicroTSG Section 4 Deploying and Operating the MicroTSG Note This section provides instructions for deploying the MicroTSG It also See SEATERM s help files for includes a discussion of system operation example sets of operation detailed information on the use of commands and detailed command descriptions the program Deployment He et Handling New MicroTSGs are shipped with an anti foul cyl
43. verter digitizes the outputs of the reference resistor and thermistor AC excitation and ratiometric comparison using a common processing channel avoids errors caused by parasitic thermocouples offset voltages leakage currents and reference errors Conductivity is acquired using an ultra precision Wein Bridge oscillator to generate a frequency output in response to changes in conductivity A high stability TCXO reference crystal with a drift rate of less than 2 ppm year is used to count the frequency from the Wein Bridge oscillator 31 Appendix II Electronics Disassembly Reassembl Appendix Il Electronics Disassembly Reassembly Note Do not disassemble the MicroTSG electronics unless Do not disassemble the MicroTSG e moving the J1 jumper on the PCB to change operation from Autopower to send the sensors or PCB to default to Normal or vice versa or Sea Bird for recalibration or repair e troubleshooting a problem and need to access the PCB or sensors Package the entire MicroTSG for shipment after removing the anti foul cylinder see Section 5 Routine Maintenance and Calibration Disassembly Screw typical 6 places 1 Remove the six 4 inch socket head screws lock washers and flat washers securing the top plate to the housing body Do not remove the two screws that are recessed in the top plate these secure the electronics to the top plate 2 Remove the top plate by pulling up on it firmly and
44. where For a three wire external wiring a controller applies power waits for data and then removes configuration set power Only three of the four wires Power Ground and Transmit e J1 jumper to Autopower are needed for operation since it is not necessary to command the e AUTORUNEY and MicroTSG to take samples Note that the MicroTSG does not e SINGLESAMPLE N respond to any commands in this configuration so initial setup of See Section 4 Deploying the system must be performed with all four wires in place and Operating the MicroTSG see Command Descriptions in Section 4 Deploying and Operating for details the MicroTSG gt Four wires With all four wires Power Ground Receive and Transmit the MicroTSG can receive and respond to most commands Note that the MicroTSG does not respond to the QS command in this configuration e Jumper set for Normal The MicroTSG powers up wakes up when there is a pulse on the serial interface lines In this configuration the MicroTSG can be controlled using the documented commands and can be commanded into a quiescent sleep mode with the QS command Verify the jumper setting in one of the following ways e Check the MicroTSG configuration sheet on the manual front cover for Note the factory setting or See Appendix II Electronics Disassembly Reassembly for details on accessing the PCB to e Connect the MicroTSG to the computer as described in Power and change the jumpe

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