Document Outline

• N
• Introduction 
• Introduction
  • How to use the manuals
    • Organisation of this manual
  • The SunScan Canopy Analysis System
    • PAR measurements
      • • Fractional interception and Leaf Area Index estimates
        • PAR mapping
        • Autolog and Linear Quantum Sensor modes
    • SunScan probe
    • Beam Fraction sensor
    • Data Collection Terminal
    • SunData software
    • Field accessories
• Getting Started
  • Preliminary checks
    • The Workabout and SunScan probe
      • • Step 1 - Getting a screen display
        • Step 2 - Running SunData and communicating with the probe
        • Step 3 - Switching off the Workabout
    • Checking the Workabout hardware
      • • The Internal drawer
        • The Psion Charger
  • Installing the SunData s/w in your PC
    • The SunData s/w Diskette
      • What the s/w does
        • SunData PC s/w (in the \PC directory)
        • SunData Psion s/w (in the \PSION directory)
        • Psion communications s/w (in the \COMMS directory)
    • Installing the s/w
      • • Your PC requirements
  • Running SunData
    • • • From DOS
    • Setting up your PC's COM port
  • Communication checks:
    • SunScan probe to PC
      • • Navigating and selecting options in the PC s/w
        • To exit or quit SunData
    • Workabout to PC
  • Running SunData in Windows
    • • • In Windows 3.11
        • In Windows 95
• S
• SunScan Tutorial
  • About this tutorial
    • What you will learn
    • Using a portable PC instead of the Workabout
  • Working with the Workabout
    • Powering up
    • Navigating around the Workabout
    • What to do if you get lost
    • Starting SunData in the Workabout
  • Using a PC instead of the Workabout
    • Starting the PC software
  • Setting up a measurement session
    • Working through the menu options
    • File Saving
    • "Hot Keys"
  • Taking readings
    • Using the Emulator mode
    • Without a Beam Fraction Sensor
    • Connecting the SunScan probe
    • Connecting the Beam Fraction Sensor
    • Measuring Leaf Area Index without a Beam Fraction Sensor
    • Averages
  • Reviewing your data file
  • Transferring the data file to your PC
    • • From the Workabout
      • To the PC
        • Navigating in the File Transfer box
    • Initiating the file transfer from the Workabout
      • Meanwhile, on the PC...
    • RS232 communication problems
  • Conclusion of the Tutorial
  • SunData Screens on the Workabout
• M
• Menus and Screens
• More Psion and file handling notes
  • Navigating Psion directories and screens
    • The Workabout User Guide
      • General principles
      • "Hot keys"
    • Navigating the Psion directories and screens
    • Psion subdirectory usage in file select dialogs
    • Re-installing the SunData application icon
    • Deleting unwanted Workabout files
    • Flashcards - reformatting
  • Data memory management
  • Configuration and data file handling
    • SunData Configuration files
      • Default .cfg
      • Creating a configuration file
      • Restoring a configuration
    • Data files
      • Changing the data file
  • Displaying data files on your PC
    • The .PRN file
    • The .CSV file
    • Data file layouts and data groups
      • • Group numbering
• M
• Measurement options
  • Experiment design
    • Above-canopy reference requirements
      • • Beam Fraction sensor
        • Independent PAR sensor
        • Direct and Diffuse components
    • Canopy type and BFS practicalities
    • Canopy type and LAI estimates
    • Canopy Sampling volume
    • Preferred light and weather conditions
    • Planning for the sun’s position
  • Advice on Absorption and ELADP values
    • Absorption
    • ELADP
      • Setting ELADP
      • Estimating ELADP in the field
    • Relationship between Mean Leaf Angle and ELADP
  • SunScan System Measurement modes
    • Workabout setup
      • The LAI, PAR and All displays
        • LAI display
        • PAR display
        • All display
    • The Autolog function
      • • Battery and memory management
  • Measurement procedures in the field
    • Probe handling in the field
      • The probe GO button
      • Levelling the probe
      • Use of the tripod
      • The Workabout
    • BFS handling in the field
      • Using the tripod
      • Finding North, and setting the shade ring
      • Levelling the BFS
      • Extension cables, and the location of the BFS
    • PAR calibrations
      • Factory light calibration
      • Checking the probe/BFS matching
      • The Recalibrate option
      • Restoring the factory calibration
      • Effect of the shade ring on the BFS
      • Comparing the calibration with other PAR sensors
      • Routine maintenance and cleaning
      • The "spread" measurement
    • Environmental and moisture protection
      • The SunScan probe and Beam Fraction Sensor
      • The Workabout
• L
• LAI theory
  • Ingredients of the LAI computation method
    • • • Geometric analysis
        • Incomplete absorption - more elaborate analysis
        • Equation fitting and inversion
      • Theory versus reality
  • Derivation of Wood’s SunScan canopy analysis equations
    • The major assumptions
    • Beer's law for canopy absorption
    • Campbell's Ellipsoidal LAD equations.
    • Transmission of Diffuse Light
      • • Diffuse light transmission (cosine corrected sensor)
    • Modelling the canopy transmission
      • • Assumptions
        • In detail:
        • The canopy model
    • Accuracy of LAI calculations
  • Functions used to model canopy transmission
    • Diffuse light - cosine response sensor
    • Diffuse light - hemispherical response sensor.
      • • Diffuse light transmission (hemispherical response sensor)
    • Modelling incomplete PAR absorption and scattering
      • • For diffuse light:
        • For direct beam:
    • Calculating zenith angles
    • Summary
  • Scientific references
• Technical Reference section
  • Maintenance and repair
    • Checking the batteries
    • The SunScan probe batteries
      • • Checking the probe battery level
        • Probe battery life
        • Replacing the probe batteries
    • The Workabout batteries
      • • Checking the Workabout battery levels
        • Workabout battery management
    • Checking the desiccant
      • • Refreshing the desiccant
    • Checking the PAR calibration
      • Factory calibration method
      • Re-setting the factory calibration
  • Troubleshooting
    • Psion Workabout
      • • There is no SunData Icon in the system screen.
        • The system fails to recognise a Flashcard in the A: or B: drives.
        • The Workabout gives continuous “low battery” warnings, even after fully recharging the battery pack.
    • Problems running the SunData application.
      • • SunData fails to run, with exit code 80.
        • SunData reports “serial port in use”.
        • SunData fails with “insufficient memory” or “insufficient system resources” message.
    • While running SunData
      • • SunData reports “SunScan probe not connected”.
        • SunData recognises the SunScan probe, but fails to take readings.
        • On running SunData, all the system settings are scrambled.
        • “Out of memory” reported on drive A:.
        • “Insufficient power to write data” reported.
        • When transferring files to a PC, data is transferred, but there are repeated checksum or device IO errors.
        • SunScan or BFS give inconsistent light readings.
  • Technical Support
    • Distributor contact
    • Direct Delta-T contact
    • Guarantee
    • Problem Reports
    • SunScan circuit schematics and data
    • Locating version and serial numbers
      • • S/W Diskette:
        • SunData S/W programs:
        • SunScan probe
        • Beam Fraction Sensor
        • Psion Workabout:
  • Specifications
    • SunScan Probe type SS1
    • Beam Fraction Sensor type BF1
    • Data Collection Terminal type DCT1 (Psion Workabout)
    • PC as Data Collection device
    • Carrying Case type SCC1
    • Telescopic Tripod type BFT1
    • Spares Kit type SPS1
    • Logging Cables
      • • Logger cable for SunScan probe, type SSDL10
        • Logger cable for Beam Fraction sensor type BFDL5
  • PAR Performance
    • Spectral response
    • Cosine responses of probe and BFS
• Appendices
  • A. Logging the probe as a Linear Quantum Sensor
    • • • Wiring connections
        • Output
        • Logger requirements
  • B. Logging the Beam Fraction sensor
    • • • Wiring connections
        • Output
        • Logger requirements
  • C. Upgrading the SunScan system
    • • The SunData PC s/w
      • The Workabout SunData s/w
      • Revision History
  • D. File transfer between Workabout and PC
    • Choice of different programs
      • The Workabout Remote Link
    • PsiWin
    • SLINK and RCOM
      • • The procedure
    • Example using SLINK
    • Example using RCOM
    • Documentation of RCOM and SLINK
  • E. Alternative file transfer mechanisms
    • Sending a file to a Communication program
      • • In the communications program
        • In SunData on the Workabout
    • Sending a file to a serial printer
    • Using the Workabout COMMS application
  • F. Glossary
• Index