opti-sciences OS1p, Руководство пользователя

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Running the Yield of PSII Y(II) Test
From the main screen select Test Menu by pressing the touch screen. The Test Selector
screen will appear. Press the “Y(II)” button.
Y(II) Measuring Screen
small screen second small screen
As with the Fv/Fm test, the last file used for this type of measurement will open up and a
small screen will appear within the larger screen. It will show the file name and ask if the
if one wants to “Proceed” to measuring with this file and the parameters that have been
set. The other option is to create a new file with “Change”.
When “Proceed” is pressed, a second small window appears with three choices. “Appnd”
adds measurements to the existing file, “Cncel” brings one back to the main menu, and
“OvrRt” will overwrite the previous measuring file with existing measuring parameter
settings.
To make a measurement with the default setting programmed into the OS1p at the
factory, place the single end of the fiber optic bundle into either the open body clip or the
PAR Clip (The PAR Clip is an Optional accessory but it is highly recommended). Make
sure that the fiber bundle is inserted all the way into the hole provided, and lock the
locking screw. If the PAR clip is being used, then the measurement may be triggered by
pressing the black button on the bottom of the PAR Clip, the measure button on the touch
screen, or the red button on the end of the fiber optic probe. Do not change the
orientation of the leaf relative to the light source, and place the clip in such a way that the
part of the leaf to be measured is not shaded by the PAR Clip or the operator. Y(II) varies
with most types of plant stress, but it also varies with light level and temperature. For that
reason, the PAR Clip measures both variables and records the information in the
measuring file with Y(II) and ETR.