BenutzerhandbuchInhaltsverzeichnisN2Introduction 6Introduction6How to use the manuals6Organisation of this manual6The SunScan Canopy Analysis System6PAR measurements66Fractional interception and Leaf Area Index estimates6PAR mapping6Autolog and Linear Quantum Sensor modes6SunScan probe7Beam Fraction sensor7Data Collection Terminal7SunData software7Field accessories7Getting Started8Preliminary checks8The Workabout and SunScan probe88Step 1 - Getting a screen display8Step 2 - Running SunData and communicating with the probe8Step 3 - Switching off the Workabout9Checking the Workabout hardware99The Internal drawer9The Psion Charger9Installing the SunData s/w in your PC10The SunData s/w Diskette10What the s/w does10SunData PC s/w (in the \PC directory)10SunData Psion s/w (in the \PSION directory)10Psion communications s/w (in the \COMMS directory)10Installing the s/w1010Your PC requirements10Running SunData111111From DOS11Setting up your PC's COM port11Communication checks:12SunScan probe to PC1212Navigating and selecting options in the PC s/w12To exit or quit SunData12Workabout to PC12Running SunData in Windows131313In Windows 3.1113In Windows 9513S14SunScan Tutorial14About this tutorial14What you will learn14Using a portable PC instead of the Workabout14Working with the Workabout14Powering up14Navigating around the Workabout14What to do if you get lost15Starting SunData in the Workabout15Using a PC instead of the Workabout16Starting the PC software16Setting up a measurement session18Working through the menu options18File Saving19"Hot Keys"19Taking readings20Using the Emulator mode20Without a Beam Fraction Sensor21Connecting the SunScan probe21Connecting the Beam Fraction Sensor22Measuring Leaf Area Index without a Beam Fraction Sensor23Averages24Reviewing your data file24Transferring the data file to your PC2525From the Workabout25To the PC25Navigating in the File Transfer box26Initiating the file transfer from the Workabout26Meanwhile, on the PC...27RS232 communication problems28Conclusion of the Tutorial28SunData Screens on the Workabout29M30Menus and Screens30More Psion and file handling notes33Navigating Psion directories and screens33The Workabout User Guide33General principles33"Hot keys"33Navigating the Psion directories and screens33Psion subdirectory usage in file select dialogs34Re-installing the SunData application icon35Deleting unwanted Workabout files35Flashcards - reformatting35Data memory management36Configuration and data file handling36SunData Configuration files36Default .cfg37Creating a configuration file37Restoring a configuration37Data files37Changing the data file37Displaying data files on your PC38The .PRN file38The .CSV file38Data file layouts and data groups3939Group numbering39M41Measurement options41Experiment design41Above-canopy reference requirements4141Beam Fraction sensor41Independent PAR sensor41Direct and Diffuse components41Canopy type and BFS practicalities42Canopy type and LAI estimates42Canopy Sampling volume42Preferred light and weather conditions43Planning for the sun’s position43Advice on Absorption and ELADP values44Absorption44ELADP44Setting ELADP44Estimating ELADP in the field45Relationship between Mean Leaf Angle and ELADP45SunScan System Measurement modes46Workabout setup46The LAI, PAR and All displays46LAI display46PAR display46All display46The Autolog function4748Battery and memory management48Measurement procedures in the field48Probe handling in the field48The probe GO button48Levelling the probe48Use of the tripod49The Workabout49BFS handling in the field49Using the tripod49Finding North, and setting the shade ring50Levelling the BFS50Extension cables, and the location of the BFS50PAR calibrations51Factory light calibration51Checking the probe/BFS matching51The Recalibrate option51Restoring the factory calibration52Effect of the shade ring on the BFS52Comparing the calibration with other PAR sensors52Routine maintenance and cleaning52The "spread" measurement52Environmental and moisture protection53The SunScan probe and Beam Fraction Sensor53The Workabout53L54LAI theory54Ingredients of the LAI computation method545454Geometric analysis54Incomplete absorption - more elaborate analysis54Equation fitting and inversion55Theory versus reality55Derivation of Wood’s SunScan canopy analysis equations55The major assumptions55Beer's law for canopy absorption56Campbell's Ellipsoidal LAD equations.56Transmission of Diffuse Light5658Diffuse light transmission (cosine corrected sensor)58Modelling the canopy transmission5858Assumptions58In detail:59The canopy model59Accuracy of LAI calculations60Functions used to model canopy transmission60Diffuse light - cosine response sensor60Diffuse light - hemispherical response sensor.6061Diffuse light transmission (hemispherical response sensor)61Modelling incomplete PAR absorption and scattering6162For diffuse light:62For direct beam:62Calculating zenith angles62Summary62Scientific references62Technical Reference section64Maintenance and repair64Checking the batteries64The SunScan probe batteries6464Checking the probe battery level64Probe battery life64Replacing the probe batteries64The Workabout batteries6464Checking the Workabout battery levels64Workabout battery management65Checking the desiccant6565Refreshing the desiccant65Checking the PAR calibration66Factory calibration method66Re-setting the factory calibration66Troubleshooting67Psion Workabout6767There is no SunData Icon in the system screen.67The system fails to recognise a Flashcard in the A: or B: drives.67The Workabout gives continuous “low battery” warnings, even after fully recharging the battery pack.67Problems running the SunData application.6767SunData fails to run, with exit code 80.67SunData reports “serial port in use”.67SunData fails with “insufficient memory” or “insufficient system resources” message.67While running SunData6767SunData reports “SunScan probe not connected”.67SunData recognises the SunScan probe, but fails to take readings.67On running SunData, all the system settings are scrambled.67“Out of memory” reported on drive A:.67“Insufficient power to write data” reported.68When transferring files to a PC, data is transferred, but there are repeated checksum or device IO errors.68SunScan or BFS give inconsistent light readings.68Technical Support69Distributor contact69Direct Delta-T contact69Guarantee69Problem Reports69SunScan circuit schematics and data69Locating version and serial numbers6969S/W Diskette:69SunData S/W programs:69SunScan probe69Beam Fraction Sensor69Psion Workabout:69Specifications70SunScan Probe type SS170Beam Fraction Sensor type BF170Data Collection Terminal type DCT1 (Psion Workabout)70PC as Data Collection device70Carrying Case type SCC171Telescopic Tripod type BFT171Spares Kit type SPS171Logging Cables7171Logger cable for SunScan probe, type SSDL1071Logger cable for Beam Fraction sensor type BFDL571PAR Performance72Spectral response72Cosine responses of probe and BFS73Appendices74A. Logging the probe as a Linear Quantum Sensor747474Wiring connections74Output74Logger requirements74B. Logging the Beam Fraction sensor757575Wiring connections75Output75Logger requirements75C. Upgrading the SunScan system7676The SunData PC s/w76The Workabout SunData s/w76Revision History76D. File transfer between Workabout and PC77Choice of different programs77The Workabout Remote Link77PsiWin77SLINK and RCOM7878The procedure78Example using SLINK78Example using RCOM80Documentation of RCOM and SLINK80E. Alternative file transfer mechanisms81Sending a file to a Communication program8181In the communications program81In SunData on the Workabout81Sending a file to a serial printer81Using the Workabout COMMS application81F. Glossary82Index84Größe: 755 KBSeiten: 86Language: EnglishHandbuch öffnen
