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Change Y(II) measuring parameters
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Y(II) Measuring Screen
One can change many of test parameters by pressing the upper left window on the screen.
Yield Test Setup Screen
Screen revealed by pressing the upper left hand window.
Setting modulation light source intensity.
It is adjustable between 0.1
:
mol and
1
:
mol when using an open body clip or a PAR Clip. The settings range from 5% to
100% in 5% increments. The correct setting depends upon the distance from the sample
and the nature of the sample. The optimum setting for Y(II) is not as critical as it is for
Fv/Fm and quenching measurements. It must, however, be high enough to make a
measurement and prevent the Fluorescence signal too low error.
Put a leaf, of the type to be measured in a study, into the PAR Clip or open body clip,
and place the fiber optic probe all the way into the PAR Clip or Open body Clip.
The modulated light is always on when a measuring screen is viewed. The modulated
light is set correctly, if it is set high enough to get a reading when the measuring button is
pressed. The setting is linear. The “Gain” should be as low as possible for the best signal
to noise ratio.
Upper Left Window
