WorkHorse Rio Grande ADCP User's Guide
Contents
1. Spin 90 degrees Tilt gt 10 degrees Place the Dummy Plug or small block under the end cap to make the tilt less than or equal to 20 degrees UPWARD DEPLOYMENT Spin 90 degrees i DOWNWARD DEPLOYMENT Figure 7 Compass Alignment P N 957 6167 00 April 2005 page 17 WorkHorse Rio Grande ADCP User s Guide 10 Internal Pressure Sensor If you have the optional pressure sensor installed in your ADCP use the AZ command to zero out the pressure sensor at the deployment site a Connect and apply power to the system as described in Figure 5 page 10 b Start BBTalk and wakeup the ADCP press the END key c Type AZ and press the Return key d Exit BBTalk 10 1 Pressure Sensor Maintenance In order to read the water pressure depth water must be able to flow through the copper screw on the pressure sensor Antifoulant paint will block the sensor s port a small hole that is drilled through the copper screw You should tape off the screw during anti fouling paint application This means that the sensor port is not fully protected from bio fouling The sensor port is surrounded by the antifouling paint but bio fouling may build up on the screw and eventually clog the sensor port However most organ isms do not seem to find the small amount of unpainted surface attractive If it is logistically possible to periodically inspect clean the pressure sensor screw it is highly recommended This tradeoff situation must2. if your CD ROM drive is drive D type d launch d Follow the browser instructions on your screen Power The Rio Grande requires a DC supply between 10 5 volts and 18 volts Ei ther an external DC power supply or battery can provide this power If you are using a battery use the largest rated amp hour battery as possible A car battery should last one to two days powering a 600 kHz ADCP NOTE Check that the battery voltage is above 10 Volts DC Rio Grande ADCPs will work at 10 volts however batteries with voltages below 11 volts are at or near their end of life and are approaching uselessness Bench Top Battery Power Requirements While the WorkHorse is awake and responding to commands it consumes approximately 2 2 watts A single internal battery pack supplies this power level for about five days When the WorkHorse is asleep it consumes less than one mw A standard battery pack supplies sleep power for years At every opportunity the WorkHorse will sleep to conserve power while de ployed Operation Modes The WorkHorse has two modes of operation command mode and ping mode also referred to as Deployment Saver Mode Depending on what mode the ADCP is in it will go either to sleep or to resume pinging In the Command Mode Whenever you wake up your WorkHorse power dissipation increases from less than one mw to around 2 2 w If you leave the WorkHorse in command mode without sending a command for
3. be analyzed for individual deployments Unfortunately the location of the deployment site usually dictates action in this regard NOTE The pressure sensor is optional It may not be included on your system CAUTION The pressure sensor is filled with silicone oil Never poke a needle or other object through the copper screw while the screw is installed over the A pressure sensor You will perforate the sensor causing it to fail Do not remove the cover disc or attempt to clean the surface of the pressure sensor The diaphragm is very thin and easy to damage Do not remove the pressure sensor It is not field replaceable page 18 RD Instruments WorkHorse Rio Grande ADCP User s Guide 11 Deployment Guide Use the following steps and the Quick Reference card to setup the Work Horse for a deployment 11 1 Deployment Checklist a Test the ADCP using BBTalk Q Seal the ADCP for deployment a Install new o rings use silicone lubricant a Use fresh desiccant 2 bags inside ADCP Visually inspect the ADCP a Check the transducer head condition a All mounting hardware installed a Transducer faces clean and free from defects a Verify compass alignment using BBTalk if necessary re calibrate a Are biofouling precautions needed a Zero pressure sensor optional at deployment site with AZ command D VISUALLY INSPECT THE ADCP URETHANE TRANSDUCER FACES REMOVE BARNACLES AND CHECK FOR CRACKS TRA
4. more than five minutes the Work Horse automatically goes to sleep This protects you from inadvertently depleting batteries RD Instruments WorkHorse Rio Grande ADCP User s Guide In the Ping Mode After you send commands to the WorkHorse that tells it to start collecting data the WorkHorse goes into deployment saver mode If power is some how removed and later restored the WorkHorse simply picks up where it left off and continues to collect data using the same setup 8 Testing Your WorkHorse Use the following steps to test the ADCP a Interconnect and apply power to the system as described in the Setup the WorkHorse Rio Grande ADCP page 10 b Start the BBTalk program for help on using BBTalk see the RDI Tools User s Guide c Press lt F2 gt and run the script file TestWH rds The TestWH txt script file runs PSO PS3 PA PC2 and the PCI tests The results of the tests will be printed to the screen and saved to the log file WH RSLTS txt The WH RSLTS txt file will be created in the same directory that BBTalk is ruming from Table 4 lists the tests BB7alk runs gives you guidelines for running the tests and tells you what the results mean Table 4 WorkHorse ADCP Tests Test Guidelines PSO Displays system parameters PA Extensive pre deployment test that tests the signal path and all major signal proc essing subsystems This test may not pass unless the WorkHorse transducer face is immersed
5. or MatLab files For detailed information on how to use WinADCP see the WinADCP User s Guide Documentation CD The Documentation CD has an Adobe Acrobat pdf electronic version of the WorkHorse Technical Manual Use the Documenta tion CD to search for information For detailed information on how to use Adobe Acrobat and the Documentation CD see the Read This First guide NOTE See WorkHorse Rio Grande ADCP Applications page 2 to see what software package to use for collecting data System Requirements The WorkHorse software requires the following e Windows 95 Windows 98 Windows NT 4 0 with Ser vice Pack 4 installed Windows 2000 or Windows XP e Pentium class PC 233 MHz 350 MHz or higher recom mended e 32 megabytes of RAM 64 MB RAM recommended e 6 MB Free Disk Space 20 MB recommended e One Serial Port two High Speed UART Serial Ports recom mended e Minimum display resolution of 800 x 600 256 color 1024 x 768 recommended P N 957 6167 00 April 2005 page 11 WorkHorse Rio Grande ADCP User s Guide 6 2 7 1 7 2 page 12 Software Installation To install the WorkHorse software do the following a Insert the compact disc into your CD ROM drive and then follow the browser instructions on your screen Ifthe browser does not appear complete Steps b through d b Click the Start button and then click Run c Type lt drive gt launch For example
6. the I O cable and dummy plug Do not connect or disconnect the I O cable with power ap plied The connector pins may become pitted and worn The WorkHorse I O cable is wet mate able not under water mate able 4 3 Deployment Guidelines P N 957 6167 00 April 2005 Read the appropriate WorkHorse User s Guide and the Software User s Guides These guides have tutorials to help you learn how to use the ADCP Align the compass whenever the battery pack or recorder module is replaced or when any ferrous metals are relocated inside or around the WorkHorse housing Ferro magnetic materials affect the compass Avoid using ferro magnetic materials in the mounting fixtures or near the Workhorse Ferro magnetic materials affect the compass page 9 WorkHorse Rio Grande ADCP User s Guide 5 1 5 2 page 10 Setup the WorkHorse Rio Grande ADCP Figure 5 illustrates how to connect the WorkHorse Rio Grande cable on your workbench You will need a container of water large enough to submerge the Work Horse s transducer head into during testing two to three inches of water is sufficient Testing the WorkHorse out of water may cause some tests to fail but causes no harm to the WorkHorse COMPUTER ADCP UO CABLE Figure 5 WorkHorse Rio Grande Connections Serial Communication The standard communications settings for a WorkHorse Rio Grande is RS 232 9600 baud no parity
7. to flood Read the Main tenance guide for details on disconnecting the I O cable Do not expose the transducer faces to prolonged sunlight The urethane faces may develop cracks Cover the trans ducer faces on the Workhorse if it will be exposed to sun light Do not expose the I O connector to prolonged sunlight The plastic may become brittle Cover the connector on the Workhorse if it will be exposed to sunlight Do not store the ADCP in temperatures over 75 degrees C The urethane faces may be damaged Check the tempera ture indicator inside the shipping case It changes color if the temperature limit is exceeded Do not scratch or damage the O ring surfaces or grooves If scratches or damage exists they may provide a leakage path and cause the ADCP to flood Do not risk a deploy ment with damaged O ring surfaces Do not lift or support a WorkHorse by the external I O cable The connector or cable will break RD Instruments WorkHorse Rio Grande ADCP User s Guide 4 2 Assembly Guidelines Read the Maintenance guide for details on WorkHorse re assembly Make sure the housing assembly O rings stay in their groove when you re assemble the WorkHorse Tighten the hardware as specified Loose missing stripped hard ware or damaged O rings can cause the WorkHorse transducer to flood Place a light amount of DC 111 lubricant on the end cap connector pins rubber portion only This will make it eas ier to connect or remove
8. water PC2 Continuously updates sensor display Rotate and tilt WorkHorse and watch the readings on the display change PC1 Beam continuity test Follow instructions to rub each beam in turn to generate a noise signal the WorkHorse uses to verify the transducer beam is connected and operational P N 957 6167 00 April 2005 Results Verify the information is consistent with what you know about the setup of your system All tests must pass Satisfy yourself that the readings make sense All beams must pass page 13 WorkHorse Rio Grande ADCP User s Guide 9 Compass Calibration The main reason for compass calibration is battery replacement Each new battery carries a different magnetic signature The compass calibration al gorithm corrects for the distortions caused by the battery to give you an ac curate measurement You should be aware of the following items e We recommend against calibrating the WorkHorse while on a ship The ship s motion and magnetic fields from the hull and engine will likely prevent successful calibration e Ifyou think your mounting fixture or frame has some mag netic field or magnetic permeability calibrate the WorkHorse inside the fixture Depending on the strength and complexity of the fixture s field the calibration procedure may be able to correct it 9 1 Preparing for Calibration a Place the Workhorse on a piece of strong cardboard on top of a smooth wooden non magne
9. 8 data bits and 1 stop bit If the serial protocol is set for RS232 and your computer expects RS422 you will need an RS232 to RS422 adapter between the WorkHorse cable and your computer You can set the WorkHorse for baud rates other than 9600 baud RS422 The WorkHorse Rio Grande is normally set for RS232 but it can be changed to RS422 by changing a switch setting The switch is in plain view on the top circuit board near the cable connectors Its settings are plainly marked on the board This user s guide assumes that you use RS232 What if the WorkHorse Does Not Respond If your WorkHorse does not respond check the serial port cables and power If necessary refer to the Troubleshooting Guide in the WorkHorse technical manual RD Instruments 6 1 WorkHorse Rio Grande ADCP User s Guide Software RDI has utility programs to help you set up use test and trouble shoot your WorkHorse ADCP Each program has a help file that you can print or you can view help while running the program Table 3 WorkHorse Software Main Modules Program Name Description BBTalk Windows ADCP communication program Use this program to talk to the ADCP and to run test script files BBTalk is included on the RDI Tools CD For detailed information on how to use BBTalk see the RDI Tools User s Guide WinADCP Gives users a visual display of the entire set of data You can zoom in on a portion of the data for closer analysis and export data to text
10. NSDUCER HEAD CHECK O RINGS AND MOUNTING HARDWARE ARE INSTALLED HOUSING CHECK FOR CRACKS ELECTRONICS CHECK ALL HARDWARE IS TIGHT END CAP CHECK O RINGS AND MOUNTING HARDWARE ARE INSTALLED I O CABLE CONNECTOR CONNECT I O CABLE Figure 8 Visual Inspection before Deployment P N 957 6167 00 April 2005 page 19 WorkHorse Rio Grande ADCP User s Guide 11 2 11 3 page 20 Prepare the ADCP for Deployment BBTalk COMPUTER A ADCP UO CABLE Figure 9 Prepare the ADCP Things to remember while preparing the ADCP e Use the Deployment Checklist to verify that the ADCP is ready for the deployment e Test the ADCP using BBTalk Some tests will fail if the ADCP is not placed in water while the tests are being run e Desiccant lasts a year at specified WorkHorse deployment depths and temperatures Remember that desiccant rapidly absorbs moisture from normal room air Replace the desic cant whenever the WorkHorse housing or end cap is re moved e Verify the compass calibration Deployment Software Real Time data collection involves a series of independent steps Using RDP s Software will ensure that the ADCP is setup correctly e Test your WorkHorse BBTalk e Plan your deployment WinRiver or VmDas e Transfer your plan into the WorkHorse and start data col lection WinRiver or VmDas e Verify data integrity WinADCP e Display and process
11. WorkHorse Rio Grande ADCP User s Guide C o _ emmmer 7 TT aE a I CH A CH CH O mmm wem A eem a a ar al E ar El RD Instruments Acoustic Doppler Solutions P N 957 6167 00 April 2005 Table of Contents 1 o DUCTION EE 1 2 WorkHorse Rio Grande ADCP Applications nn sanssansr sens enne erseersnersnenrnsersnensneernsernsernsvensvens 2 3 System OVEIVIOW ics cs cstiescecetivecccctvveeesnttveencttivenscuoceseentnecersesuecvecsctecensdsteecesesuccerensteeeeusdeceesuastuerevesocess 2 3 1 Rio Grande ADGP OverVieW sven siete viersen ids antennae A E A EEN 3 3 2 VO Cable Overview EE 5 3 3 Optional Flash Memory Card aoe neerenneereneeneerenneeeerenneerenseneenenneeerveneerenseneenenneveveneenenn 6 3 4 Spare Ras EE 7 4 WorkHorse E 8 4 1 General Handling Guidelines nnn nennnnnneneerenennenneeenenenennenenensereenenennenneeneenenenannneeeeen enn Ennen 8 4 2 Assembly GUIASIINES ocio Rain 9 4 3 Deployment Guidelines arde alocada Sc 9 5 Setup the WorkHorse Rio Grande ADOP nnen ene nenvenenanenneenveneeenenanennenenenvenennenn 10 5 1 Serial Communication meres aa o 10 5 2 What if the WorkHorse Does Not Respond eenen er enneerensennerenneneenenneerenseeenennens 10 6 e Lu 11 6 1 EK Uu CT 11 6 2 software Installation di 12 7 ade e ENEE EEN AE EEN E ASSEN ENEE EEN 12 7 1 Bench Top Battery Power Requirements nnee nono conan nn nc nnnn cnn rn nn cnn nr rra ran 12 7 2 Operation lee 12 Test
12. and the time of the next ensemble What is the Data The WorkHorse records velocity data in units of mm s Calibration depends on how well the WorkHorse knew the speed of sound which it computed based on its measured temperature and the salinity value it was given A salinity error of 5 ppt introduces less than 0 5 velocity error RD Instruments WorkHorse Rio Grande ADCP User s Guide 13 A Few Principles of Operation Consult RDI s Primer ADCP Principles of Operation a Practical Primer Second Edition for BroadBand ADCPs to learn more about WorkHorse principles of operation The following are a few points from the Primer that may be worth knowing P N 957 6167 00 April 2005 Horizontal velocity measurement accuracy is unaffected by vertical stratification Stratification has negligible affect on the ability of the WorkHorse to penetrate through the water concentration of suspended particles is the main factor influencing profiling range WorkHorse measurements are automatically corrected for tilts up to 20 In addition to correcting for the beam point ing angles the WorkHorse maps depth cells to other cells at the same depth If you want to make measurements near the surface from a bottom mounted WorkHorse you should minimize the tilt Depth cells are most sensitive to velocities at the center of the depth cell and less sensitive at the top and bottom This sensitivity 1s reflected by what we call a triangu
13. ard Urethane Face The urethane face covers the transducer ceramics Never set the transducer on a hard surface The urethane face may be damaged Housing The standard WorkHorse housing allows deployment depths to 200 meters Thermistor The Thermistor measures the water temperature Pressure Sensor The Optional pressure sensor measures water pressure depth Transducer Head The WorkHorse electronics and transducer ceramics are mounted to the transducer head The numbers embossed on the edge of the transducer indicates the beam number When assembling the unit match the transducer beam number with the Beam 3 mark on the end cap End Cap The end cap holds the I O cable connector When assembling the unit match the Beam 3 mark on the end cap with beam 3 number on the transducer P N 957 6167 00 April 2005 page 3 WorkHorse Rio Grande ADCP User s Guide PRESSURE SENSOR OPTIONAL URETHANE FACE THERMISTOR BEAM 3 MARK TRANSDUCER HEAD HOUSING END CAP I O CABLE CONNECTOR Figure 1 Rio Grande ADCP Overview page 4 RD Instruments 3 2 WorkHorse Rio Grande ADCP User s Guide 1 O Cable Overview Always remove the retaining strap on the end cap underwater connect cable and dummy plug when disconnecting them Failure to do so will break the retainer strap Do not apply any upward force on the end cap connector as the I O cable is being disconnected Stressing the end cap con
14. ard looking Work horse with a block under one side of the end cap A 35 mm block will give you an 11 degree tilt Check the on screen instructions to see if the orientation is OK Adjust as necessary NOTE The tilts must remain constant during the rotations The transducer beam is the center point of the rotation e When prompted rotate the ADCP slowly 360 degrees approximately 5 degrees per second f The second rotation requires the ADCP to be tilted 15 degrees in another direction than from the first rotation see Figure 7 page 17 Follow the on screen instructions to orient the ADCP correctly When prompted rotate the ADCP slowly 360 degrees approximately 5 degrees per sec ond RD Instruments WorkHorse Rio Grande ADCP User s Guide g The third rotation requires the ADCP to be tilted 15 degrees in another direction than from the first and second rotations Follow the on screen instructions to orient the ADCP correctly h If the calibration procedure is successful it records the new calibration matrix to nonvolatile memory The ADCP will not change its matrix unless the calibration is properly carried out i Ifthe calibration procedure is not successful return your ADCP to the original factory calibration by using the AR command Try using the AR command if you have trouble calibrating your compass In some circumstances a defective compass calibration matrix can prevent proper calibration SP
15. e P N 957 6167 00 April 2005 page 21 WorkHorse Rio Grande ADCP User s Guide 11 5 12 12 1 12 2 12 3 page 22 Send the Deployment Commands Use VmDas or WinRiver see the respective software user s guides to send the commands to the ADCP Things to remember while deploying the ADCP e Ping beeps Whenever the Workhorse pings an internal beeper makes an audible beep The beep consumes negligi ble energy and tells you the Workhorse is pinging Reviewing the Data Where was the Data The quickest way to find out the depth of each depth cell is to display your recorded data using WinADCP The velocity display tells you the distance to the center of each cell The computed distance assumes that the speed of sound is constant from the transducer to the depth cell The actual distance is proportional to the average sound speed if the average sound speed is 1 less than the sound speed at the transducer the distance to the depth cell is 1 less than the displayed distance When was the Data The time recorded with each data record is the time of the beginning of the first ping of the ensemble Plan sets the ping interval so pings occur uni formly across the ensemble interval as opposed to putting all the pings at the beginning of the interval It leaves a few seconds at the end of each ensemble to allow time for data recording Hence the average time of the ensemble is midway between the recorded ensemble time
16. ection before Deployment nnen nennen nnnnnnneneneeneenennnnenenenne nennen eeen 19 Preparesthe ADGP Eu EEE e Gn 20 Real TIME DEpIO EE 21 List of Tables Table 1 Table 2 Table 3 Table 4 WorkHorse Rio Grande Application Guide nnnnn nnen nen ennnnneneenee nennen 2 E ee tan eere heee aaa het hera 7 WorkHorse Software Main Modules ooooccccccnnccccccccccononoccccnnnnncnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnns 11 WorkHorse ADCP Tests 13 WorkHorse Rio Grande ADCP User s Guide RD Instruments Acoustic Doppler Solutions WorkHorse Rio Grande ADCP User s Guide 1 Introduction Thank you for purchasing the RD Instruments RDI Rio Grande Work Horse This guide is designed to help first time WorkHorse users to set up test and deploy their ADCP This guide is designed for use with the other WorkHorse Technical Manual guides Where needed there are references to detailed information and fig ures contained in the WorkHorse Technical Manual WorkHorse Rio Grande deployments are most often Real Time Real Time use refers to the fact you are viewing the data as the ADCP collects it via a personal computer This data is also stored on the computer to allow for data playback and processing at a later time NOTE When you receive your WorkHorse look for a set up card that shows all of the pieces you should have in your box If anything is missing or damaged contact RDI immediately NOTE Wh
17. en an addition or correction to the manual is needed an Interim Change Notice ICN will be posted to our web site on the Customer Service page www rdinstrument com Please check our web site often P N 957 6167 00 April 2005 page 1 WorkHorse Rio Grande ADCP User s Guide page 2 WorkHorse Rio Grande ADCP Applications The Workhorse Rio Grande ADCP provides customers with reliable and re peatable river discharge measurements and displays the results through its exceptional user friendly WinRiver software For detailed information on how to use WinRiver see the WinRiver User s Guide The WorkHorse Rio Grande ADCP can also be used in other moving vessel real time applications that take advantage of the Rio Grande s bottom track ing abilities WinRiver is the most often used software package for Rio Grande ADCP setup real time data collection and data review RDI also offers the VmDas program for ADCP setup real time data collection and data review For detailed information on how to use VmDas see the VmDas User s Guide Table 1 WorkHorse Rio Grande Application Guide Estuaries River Costal and Continental Shelf Rio Grande using WinRiver Rio Grande using VmDas e River stream and channel discharge e Plume tracking e Suspended sediment load estimation e Environmental surveys e Plume tracking e Planning new ports e Bridge scouring e Current mapping e Simultaneous bathymetry discharge flow structure e Costal
18. engineering e Cable and pipe laying e Circulation model studies System Overview The WorkHorse Rio Grande is designed to measure real time current pro files from temporary or permanent mounting in a vessel The Rio Grande ADCP system consists of an ADCP with Bottom Track mode High Resolu tion Water Profiling modes cables and software The input power re quirements for the Rio Grande are 12 VDC The Rio Grande system re quires the addition of a Windows compatible computer to collect data NOTE Do not attempt to attach a Workhorse Monitor Sentinel I O cable or power supply to the Workhorse Rio Grande ADCP The Workhorse Monitor and Sentinel ADCPs are 20 to 50 VDC systems The Workhorse Rio Grande uses 12 VDC only NOTE The Rio Grande End Cap is red to differentiate it from the Monitor and Sentinel ADCPs Do not swap end caps between a Rio Grande and a Monitor Sentinel The pin outs are different on both the I O cable connector and the internal I O cable RD Instruments 3 1 WorkHorse Rio Grande ADCP User s Guide Rio Grande ADCP Overview The transducer assembly contains the transducer ceramics and electronics Standard acoustic frequencies are 600 and 1200kHz See the outline draw ings in the Installation Guide for dimensions and weights VO Cable Connector Input Output I O cable connects the WorkHorse ADCP to the computer Beam 3 Mark The Beam 3 mark shows the location of Beam 3 Forw
19. ing Your WorkHorse nansu un enaneeenenenseeeeenenaeenenenaereenenennensnsnnnenensennenennennenensennenenserenenn 13 9 Compass Calibration cidos iia autant vennen EE EELER 9 1 Preparing for Calibration 9 2 Compass Calibration Verification nnn nanne en ennenenneenenenenneneeeen enen enneneneenenenenennenenennen eneen 15 9 3 Compass Calibration Procedure nnen eneen erensene eer enneerenenneerensneenenneereneneerennneen eeens 16 10 Internal Pressure EE 18 10 1 Pressure Sensor Maintenance n rrvenserirenn ieee ie 18 11 Deployment Guid E 19 11 1 Deployment Checklist ccoo A 19 11 2 Prepare the ADCP for Deployment A 20 11 3 Reen 20 11 4 Deploy the ADGP EE 21 11 5 Send the Deployment Commands AA 22 12 Reviewing the Data iii alicia 22 12 1 OICHT 22 12 2 When was the Data comic api 22 12 3 What iS tS DIET aaa 22 13 A Few Principles of Operation ee 23 14 Technical Support d ioie ai 24 List of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Rio Grande ADCP Overview nnn ensenennnnneneneerenennnnseeereerennennnnn nennen eenen 4 Connecting and Disconnecting the I O Cable ri i iii iii 5 HELENE 6 Memory Card OWEN aoa ARE EE ELE LE ALLE EE EE EEE 7 WorkHorse Rio Grande Connections nennen enenenneenennennenenreneenennnnnenenenen eenn 10 BB Talk Command History BOX ll lll ll nnn a a 15 compass AllGAMENE LEE 17 Visual Insp
20. lar weight ing function The details of this weighting function are rarely important for interpretation and use of your data The actual maximum range can be different from the range predicted in Plan Plan corrects for range variations caused by temperature and salinity but it assumes typical scattering conditions Weak backscatter can sometimes reduce range by a factor of two or more The maximum profiling range decreases with time as the bat tery voltage falls This is because transmit power depends on battery voltage Transmit power is optimized for about 13 volts page 23 WorkHorse Rio Grande ADCP User s Guide 14 Technical Support If you have technical problems with your instrument contact our field ser vice group in any of the following ways RD Instruments RD Instruments Europe 9855 Businesspark Ave 5 Avenue Hector Pintus San Diego California 92131 06610 La Gaude France 858 693 1178 33 0 492 110 930 FAX 858 695 1459 33 0 492 110 931 Sales rdi rdinstruments com rdi rdieurope com Field Service rdifs rdieurope com rdifs rdinstruments com Web www rdinstruments com After Hours Emergency Support 1 858 578 0781 page 24 RD Instruments
21. n matrix and the third to verify the calibration It will not accept the new matrix unless the calibration was carried out properly and it asks you to verify that you want to use the new calibration if it is not as good as the previous cali bration While you are turning the Workhorse for the two calibration rota tions the Workhorse checks the quality of the previous calibration and dis plays the results It compares these results with the results of the third cali bration rotation There are two compass calibrations to choose from one only corrects for hard iron while the other corrects for both hard and soft iron characteristics for materials rotating with the ADCP Hard iron effects are related to resid ual magnetic fields and cause single cycle errors while soft iron effects are related to magnetic permeability that distorts the earth s magnetic field and causes double cycle errors In general the hard iron calibration is recom mended because the effect of hard iron dominates soft iron Ifa large dou ble cycle error exists then use the combined hard and soft iron calibration a Prepare the ADCP for calibration see Preparing for Calibration page 14 b Using BBTalk send a Break to wake up the ADCP c On the Transfer menu click Command History In the Enter a Command box enter AF and click OK When the calibration proce dure starts choose the calibration type d Tilt the ADCP see Figure 7 page 17 Tilt an upw
22. nd the Workhorse housing Calibrate the compass if the battery has been replaced see Compass Calibration Procedure page 16 a Prepare the ADCP for calibration see Preparing for Calibration page 14 b Using BBTalk send a Break to wake up the Workhorse c On the Transfer menu click Command History In the Enter a Command box enter AX and click OK Command History x Enter Command moo Cancel Figure 6 BBTalk Command History Box d When prompted rotate the Workhorse slowly 360 degrees approxi mately 5 degrees per second Pay particular attention to the Overall Er ror For example HEADING ERROR ESTIMATE FOR THE CURRENT COMPASS CALIBRATION OVERALL ERROR Peak Double Single Cycle Error should be lt 5 1 55 DETAILED ERROR SUMMARY Single Cycle Error 1 54 Double Cycle Error 0 07 Largest Double plus Single Cycle Error 1 61 RMS of 3rd Order and Higher Random Error 031 If the overall error is less than 2 the compass does not require alignment You can align the compass to reduce the overall error even more if de sired P N 957 6167 00 April 2005 page 15 WorkHorse Rio Grande ADCP User s Guide 9 3 page 16 Compass Calibration Procedure The built in automated compass calibration procedure is similar to the alignment verification but requires three rotations instead of one The Workhorse uses the first two rotations to compute a new calibratio
23. nector may cause the ADCP to flood Read the Maintenance guide for details on disconnecting the I O cable A j ba STRAP ee Figure 2 Connecting and Disconnecting the I O Cable NOTE The Rio Grande End Cap is red to differentiate it from the Monitor and Sentinel ADCPs Do not swap end caps between a Rio Grande and a Monitor Sentinel The pin outs are different on both the I O cable connector and the internal I O cable P N 957 6167 00 April 2005 page 5 WorkHorse Rio Grande ADCP User s Guide CT je 8 RS 232IN CH A RS485A RS 422 OUT A RS 2320UT CH A RS485B RS 422 OUT B CH B RS485B RS 422 IN A CH B RS485B RS 422 IN B COMMUNICATION RETURN SPARE POWER POWER Figure 3 UO Cable Overview 3 3 Optional Flash Memory Card SM 35 2 4 1 bees e SLE LL Y y A Ne oan y a P2 BLIKO G EJ WHT gt BLu e BRN y 3 GRN 5 RED 4 Nx ORG WHT BER p3 RED YEL BLK BEKO P4 BLACK Memory cards are not included with the Rio Grande ADCP Two PCMCIA memory card slots see Figure 4 page 7 are available with the total mem ory capacity not to exceed 2GB The PC Card recorder is located on the Digital Signal Processor DSP board inside the Workhorse s electronics To recover data the card can be removed and used in a
24. personal computer PC or left in the Workhorse and accessed by using WinSC see the WinSC and Plan ADCP User s Guide NOTE The WorkHorse Rio Grande does not come with flash memory but has the same capacity as a WorkHorse Sentinel NOTE WinSC is not provided with WorkHorse Rio Grande systems but is available for free download at www rdinstruments com page 6 RD Instruments WorkHorse Rio Grande ADCP User s Guide ln E 3 Ami S re E B Figure 4 Memory Card Overview 3 4 Spare Parts The following parts are included in the spare parts kit Table 2 Spare Parts Description Part number O ring face 2 260 Desiccant sealed bag DES3 Lubricant silicone 5 3 oz Dow Corning DC 111 Fuse 3 0 Amp 250V GMA 3A P N 957 6167 00 April 2005 page 7 WorkHorse Rio Grande ADCP User s Guide 4 WorkHorse Care This section contains a list of items you should be aware of every time you handle use or deploy your WorkHorse Please refer to this list often 4 1 General Handling Guidelines page 8 Never set the transducer on a hard or rough surface The urethane faces may be damaged Always remove the retaining strap on the end cap underwa ter connect cable and dummy plug when disconnecting them Failure to do so will break the retainer strap Do not apply any upward force on the end cap connector as the I O cable is being disconnected Stressing the end cap connector may cause the ADCP
25. tic table If a wooden table is not available place the Workhorse on the floor as far away from metal objects as possible Use the cardboard to rotate the Workhorse during calibration this way you will not scratch the Workhorse Place the ADCP in the same orien tation as it will be deployed NOTE If you will deploy your Workhorse looking up calibrate it looking up If you will deploy it looking down calibrate it looking down CAUTION If you calibrate the compass in one direction up or down and A deploy the ADCP in the opposite direction i e calibrate it in a downward position and deploy it in a upward position the compass calibration will be invalid Compass errors in excess of 5 degrees may occur b Connect the Workhorse as shown in Setup the WorkHorse Rio Grande ADCP page 10 c Start BBTalk See the RDI Tools User s Guide for assistance on using BBTalk page 14 RD Instruments 9 2 WorkHorse Rio Grande ADCP User s Guide Compass Calibration Verification Compass calibration verification is an automated built in test that measures how well the compass is calibrated The procedure measures compass pa rameters at every 5 of rotation for a full 360 rotation When it has col lected data for all required directions the Workhorse computes and displays the results NOTE Verify the compass if you have just replaced the memory module or any ferrous metals is relocated inside or arou
26. your data WinADCP WinRiver or VmDas RD Instruments 11 4 WorkHorse Rio Grande ADCP User s Guide The WorkHorse software is designed to allow you to set up your WorkHorse to get the best possible data without having to understand and use Work Horse commands WinRiver and VmDas help you create the commands necessary to deploy the ADCP NOTE Refer to the VmDas and WinRiver Guides for information on how to use these programs Deploy the ADCP Figure 10 Real Time Deployment Things to remember while deploying the ADCP e For real time data collection you should use a 10 5 to 18 VDC battery e Tilts The Workhorse corrects data for tilts as large as 15 but tilts reduce the effective range and increase the depth of surface contamination e Anti fouling paint You are free to use any anti fouling paint or other anti fouling material you wish over any surface of the Workhorse However you should consider the following 1 Ensure that your coating can be used safely on plastic in general and polyurethane specifically 2 Apply it thinly and evenly to the transducer faces 3 Poorly applied coatings on the transducer could adversely affect instrument performance e Magnetic material Keep the Workhorse s compass away from magnetic material when you deploy the instrument Check for magnetic fields by smoothly moving a compass around and near the Workhorse and its mounting fram
Download Pdf Manuals
Related Search