User manual
Table Of Contents
- N
- Introduction
- Introduction
- Getting Started
- S
- SunScan Tutorial
- M
- Menus and Screens
- More Psion and file handling notes
- M
- Measurement options
- L
- LAI theory
- Technical Reference section
- Maintenance and repair
- Troubleshooting
- Psion Workabout
- Problems running the SunData application.
- 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
- Specifications
- PAR Performance
- Appendices
- Index
22 •
••
• SunScan Tutorial Document code: SS1-UM-1.05
This time you will see the value of the PAR reading from the probe. Now is a good
time to play around with the system a bit, shine a light on the probe, or take it
outside and poke it into a few canopies.
♦ Press the red (
GO) button to store the reading. Take a few more readings,
pressing
Enter or the red button, and using NOTE, so that you store a few
annotated readings to your data file.
You may hear occasional beeps as you take readings. These are to help you keep
track of the reading process without constantly having to look at the Workabout: one
beep for
READ, a double beep for STORE.(If you hate beeps, they can be turned off
- later!)
Connecting the Beam Fraction Sensor
If you have got a Beam Fraction Sensor...
♦ Screw the BFS connector into the socket at the back of the SunScan probe.
♦ In
Menu, Settings, SunScan probe, Enter, set the Ext sensor: to BFS. Press
Enter to accept this setting.
♦ Use
Menu, Settings, Display, Enter, and set the display to LAI.
Now when you take readings, you will see a value of the Leaf Area Index.
Mount the BFS above the
canopy, with the arrow facing
North, level, and with the
Shade ring adjusted so that it
casts a shadow over the more
northerly photodiode .
SunScan probe
held level within the
canopy being
measured.