Delta SS1-UM-1.05 User Manual

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Summary of Contents

Page 1 - User Manual

SunScanCanopy AnalysisSystemUser ManualSS1-UM-1.05

Page 2

10 •••• Getting Started Document code: SS1-UM-1.05Installing the SunData s/w in your PCIn this section you will be told about the SunData s/w, and w

Page 3 - Contents

SunScan User Manual v 1.05 Getting Started •••• 11Running SunDataThe program you will run is SUNDATA.EXE (which was in the \PC directory on thedisk

Page 4

12 •••• Getting Started Document code: SS1-UM-1.05Communication checks:SunScan probe to PCFor this test you will need the SunScan probe, and the Sun

Page 5

SunScan User Manual v 1.05 Getting Started •••• 13Running SunData in WindowsAt this stage you may wish to install the SunData program so that it ru

Page 6 - Introduction

14 •••• SunScan Tutorial Document code: SS1-UM-1.05SunScan TutorialAbout this tutorialWhat you will learnThis tutorial takes you step by step throug

Page 7 - Field accessories

SunScan User Manual v 1.05 SunScan Tutorial •••• 15Warning! If you were already in the Psion System Screen, you’ll see a message ExitSystem Screen?

Page 8 - Getting Started

16 •••• SunScan Tutorial Document code: SS1-UM-1.05Using a PC instead of the WorkaboutStarting the PC softwareSkip this section if you are using the

Page 9 - The Psion Charger

SunScan User Manual v 1.05 SunScan Tutorial •••• 17(This page is intentionally blank)

Page 10 - Installing the s/w

18 •••• SunScan Tutorial Document code: SS1-UM-1.05Setting up a measurement sessionWorking through the menu optionsIn normal use the SunData softwar

Page 11 - Running SunData

SunScan User Manual v 1.05 SunScan Tutorial •••• 19You will go through these different combinations later in the tutorial, and there isalso a route

Page 12 - Communication checks:

Notices CopyrightAll rights reserved. Under the copyright laws, this manual may not becopied, in whole or in part, without the written consent

Page 13 - Running SunData in Windows

20 •••• SunScan Tutorial Document code: SS1-UM-1.05Taking readingsUsing the Emulator modeYou have now configured all the settings necessary to start

Page 14 - SunScan Tutorial

SunScan User Manual v 1.05 SunScan Tutorial •••• 21♦ Now Set the Display to PAR (Menu,Settings, Display, Enter)The procedure for taking, displayin

Page 15 - What to do if you get lost

22 •••• SunScan Tutorial Document code: SS1-UM-1.05This time you will see the value of the PAR reading from the probe. Now is a goodtime to play ar

Page 16

SunScan User Manual v 1.05 SunScan Tutorial •••• 23By now you may have accumulated quite a lot of readings in Data.PRN the defaultdata file. There

Page 17

24 •••• SunScan Tutorial Document code: SS1-UM-1.05AveragesSunData can calculate and store the average of all the samples in a plot, as well asretai

Page 18 - GMT for your time zone. Set

SunScan User Manual v 1.05 SunScan Tutorial •••• 25♦ Select Format CSV: Yes in the Review dialog boxor from the file itself♦ Press Menu, Format C

Page 19 - "Hot Keys"

26 •••• SunScan Tutorial Document code: SS1-UM-1.05Navigating in the File Transfer box• The Tab key (➙➙➙➙❘❘❘❘) will move you from one <field>

Page 20 - Taking readings

SunScan User Manual v 1.05 SunScan Tutorial •••• 27You will immediately get a "Sending" message showing the progress of the transferuntil

Page 21 - Connecting the SunScan probe

28 •••• SunScan Tutorial Document code: SS1-UM-1.05RS232 communication problemsRS232 links between computers are notorious for giving difficulties,

Page 22

SunScan User Manual v 1.05 SunScan Tutorial •••• 29SunData Screens on the Workabout Note: these screensare only required if youare measuring

Page 23

SunScan User Manual v 1.05 •••• 3ContentsIntroduction...

Page 24 - Reviewing your data file

30 •••• Menus and Screens Document code: SS1-UM-1.05Menus and ScreensThe following table shows the menu options and settings for the Psion Workabout

Page 25

SunScan User Manual v 1.05 Menus and Screens •••• 31SettingsTitlesTitle ≤≤≤≤ 40 chars.Title name is stored in the data file heading, and is display

Page 26

32 •••• Menus and Screens Document code: SS1-UM-1.05QuitExit the SunData program

Page 27

SunScan User Manual v 1.05 More Psion and file handling notes •••• 33 More Psion and file handling notesNavigating Psion directories and screensThe

Page 28 - Conclusion of the Tutorial

34 •••• More Psion and file handling notes Document code: SS1-UM-1.05Psion subdirectory usage in file select dialogsIn the Workabout file selection

Page 29

SunScan User Manual v 1.05 More Psion and file handling notes •••• 35To copy to another subdirectory, you must add that information to the filename

Page 30 - Menus and Screens

36 •••• More Psion and file handling notes Document code: SS1-UM-1.05If you have other (non-data) files you want to keep, copy them to the internal

Page 31 - (contd.)

SunScan User Manual v 1.05 More Psion and file handling notes •••• 37Default .cfgEvery time you exit the SunData program, the program state is stor

Page 32 - Exit the SunData program

38 •••• More Psion and file handling notes Document code: SS1-UM-1.05Displaying data files on your PCAs soon as you have transferred data files from

Page 33 - The Workabout User Guide

SunScan User Manual v 1.05 More Psion and file handling notes •••• 39Data file layouts and data groupsIf you want to get a good idea of how the dat

Page 34

4 •••• Document code: SS1-UM-1.05Menus and Screens ...30More Psion a

Page 36 - Data memory management

SunScan User Manual v 1.05 Measurement options •••• 41Measurement optionsExperiment designThis section discusses the factors that bear on the exper

Page 37 - Data files

42 •••• Measurement options Document code: SS1-UM-1.05Canopy type and BFS practicalitiesCanopy type is the next variable to be considered. As a gene

Page 38 - The .CSV file

SunScan User Manual v 1.05 Measurement options •••• 43This means that in strong sun (high Beam Fraction) the canopy volume sampled isfairly small a

Page 39 - Group numbering

44 •••• Measurement options Document code: SS1-UM-1.05Advice on Absorption and ELADP valuesAbsorptionAbsorption is the percentage of incident PAR th

Page 40

SunScan User Manual v 1.05 Measurement options •••• 45Estimating ELADP in the fieldIf the canopy shows a clear predominance of horizontal or vertic

Page 41 - Measurement options

46 •••• Measurement options Document code: SS1-UM-1.05SunScan System Measurement modesWorkabout setupWith your planned experiments in mind, you shou

Page 42 - Canopy Sampling volume

SunScan User Manual v 1.05 Measurement options •••• 47The Autolog functionYou can set up the SunScan system to operate automatically in any of its

Page 43

48 •••• Measurement options Document code: SS1-UM-1.05Battery and memory managementWhen leaving the SunScan probe to Autolog over a few days, the me

Page 44 - ELADP H V=

SunScan User Manual v 1.05 Measurement options •••• 49Levelling is most critical when you are using the probe:• for the incident radiation above t

Page 45

SunScan User Manual v 1.05 •••• 5Maintenance and repair... 64Checking the

Page 46 - Workabout setup

50 •••• Measurement options Document code: SS1-UM-1.05Finding North, and setting the shade ringIf you are taking measurements which require only the

Page 47 - The Autolog function

SunScan User Manual v 1.05 Measurement options •••• 51PAR calibrationsThis section describes the basis for the light calibrations used in the SunSc

Page 48 - Probe handling in the field

52 •••• Measurement options Document code: SS1-UM-1.05You should not expect to have to do this very often. The photodiodes and lightmeasurement circ

Page 49 - BFS handling in the field

SunScan User Manual v 1.05 Measurement options •••• 53Environmental and moisture protectionYou should be aware of the different levels of protectio

Page 50

54 •••• LAI theory Document code: SS1-UM-1.05LAI theoryIn this section we shall explain as fully as we can how the SunScan computes itsreadings of l

Page 51 - PAR calibrations

SunScan User Manual v 1.05 LAI theory •••• 55Equation fitting and inversionThe results of the computer modelling, while accurate, are not suitable

Page 52

56 •••• LAI theory Document code: SS1-UM-1.05Beer's law for canopy absorptionBeer's law occurs in many situations where events happen at r

Page 53

SunScan User Manual v 1.05 LAI theory •••• 57The next section derives the transmission of light from a uniform overcast skythrough a uniform infini

Page 54 - LAI theory

58 •••• LAI theory Document code: SS1-UM-1.05Diffuse light transmission (cosine corrected sensor)Modelling the canopy transmissionAccounting for inc

Page 55 - The major assumptions

SunScan User Manual v 1.05 LAI theory •••• 59In detail:• The canopy is divided into horizontal layers of LAI 0.1• Direct beam absorption by each

Page 56 - Transmission of Diffuse Light

6 •••• Introduction Document code: SS1-UM-1.05IntroductionHow to use the manualsThis manual tells you how to use your SunScan Canopy Analyser and it

Page 57

60 •••• LAI theory Document code: SS1-UM-1.05Accuracy of LAI calculationsWhen used to predict LAI from transmitted fraction, the functions used in t

Page 58 - Assumptions

SunScan User Manual v 1.05 LAI theory •••• 61This was again calculated numerically and curves fitted to the data with similaraccuracy as above. The

Page 59 - The canopy model

62 •••• LAI theory Document code: SS1-UM-1.05The results were then analysed in terms of La, the LAI of a canopy of black leavesthat would give the s

Page 60 - Accuracy of LAI calculations

SunScan User Manual v 1.05 LAI theory •••• 63Daughty, Craig S T (1990). Direct measurements of canopy structure. RemoteSensing Reviews 1990 vol 5(1

Page 61

64 •••• Technical Reference section Document code: SS1-UM-1.05Technical Reference sectionMaintenance and repairChecking the batteriesThe SunScan sys

Page 62 - Scientific references

SunScan User Manual v 1.05 Technical Reference section •••• 65Workabout battery managementWhen you receive the Workabout, the installed battery pac

Page 63

66 •••• Technical Reference section Document code: SS1-UM-1.05Checking the PAR calibrationVarious techniques for checking the SunScan system PAR cal

Page 64 - Technical Reference section

SunScan User Manual v 1.05 Technical Reference section •••• 67TroubleshootingPsion WorkaboutThere is no SunData Icon in the system screen.• From t

Page 65 - Checking the desiccant

68 •••• Technical Reference section Document code: SS1-UM-1.05“Insufficient power to write data” reported.• Recharge the Ni-Cd battery pack, or rep

Page 66 - Checking the PAR calibration

SunScan User Manual v 1.05 Technical Reference section •••• 69Technical SupportDistributor contactIf you have a problem, please call your local dis

Page 67 - Troubleshooting

SunScan User Manual v 1.05 Introduction •••• 7SunScan probeThe light sensitive “wand” of the probe is 1 metre long, containing 64 photodiodesequall

Page 68

70 •••• Technical Reference section Document code: SS1-UM-1.05SpecificationsSunScan Probe type SS1Active area 1000 x 13 mm wide. Sensor spacing 15

Page 69 - Technical Support

SunScan User Manual v 1.05 Technical Reference section •••• 71Carrying Case type SCC1Moulded plastic case with O-ring seal for moisture and dust

Page 70 - Specifications

72 •••• Technical Reference section Document code: SS1-UM-1.05PAR PerformanceThe graphs below show the actual spectral and cosine response curves fo

Page 71 - Logging Cables

SunScan User Manual v 1.05 Technical Reference section •••• 73Cosine responses of probe and BFSThe cosine response curves show a diminishing respon

Page 72 - PAR Performance

74 •••• Appendices Document code: SS1-UM-1.05AppendicesA. Logging the probe as a Linear Quantum SensorThis application of the SunScan probe turns it

Page 73

SunScan User Manual v 1.05 Appendices •••• 75B. Logging the Beam Fraction sensorYou can log the Beam Fraction sensor in a similar manner, using the

Page 74 - Appendices

76 •••• Appendices Document code: SS1-UM-1.05C. Upgrading the SunScan systemFrom time to time, new issues of the software programs in the SunScan sy

Page 75

SunScan User Manual v 1.05 Appendices •••• 77D. File transfer between Workabout and PCChoice of different programsFor the transfer of data files fr

Page 76

78 •••• Appendices Document code: SS1-UM-1.05If PsiWin has difficulty establishing the link to the Workabout at any stage,powering down PsiWin and t

Page 77 - Choice of different programs

SunScan User Manual v 1.05 Appendices •••• 79♦ From the Psion System Screen, press Menu, Disk, Directory, Enter.♦ Press ←←←← →→→→ to select the D

Page 78 - Example using SLINK

8 •••• Getting Started Document code: SS1-UM-1.05Getting StartedAfter unpacking the SunScan consignment and checking the contents against thepacking

Page 79

80 •••• Appendices Document code: SS1-UM-1.05Example using RCOMOn the Workabout:♦ Exit from the SunData application on the Workabout by pressing ∪∪

Page 80 - ↵ to exit from RCOM

SunScan User Manual v 1.05 Appendices •••• 81E. Alternative file transfer mechanismsSending a file to a Communication programYou can send your file

Page 81 - In SunData on the Workabout

82 •••• Appendices Document code: SS1-UM-1.05F. GlossaryBeam fraction - the fraction of the Total incident PAR in the Direct beam.Beam Fraction Sens

Page 82 - F. Glossary

SunScan User Manual v 1.05 •••• 83Local time - the time used in your particular time zone. It varies from GMT by anamount depending on longitude,

Page 83

84 •••• Index Document code: SS1-UM-1.05IndexAAbout... 31Absorptionincomplete..

Page 84

SunScan User Manual v 1.05 Index •••• 85HHemispherical response...58, 80Hot keys ...

Page 85

86 •••• Index Document code: SS1-UM-1.05Transfer, file ..... 30Transmitted fraction...

Page 86

SunScan User Manual v 1.05 Getting Started •••• 9After some minutes of inactivity, the Workabout screen will automatically blankitself to save powe

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