CHAPTER 3 BASIC OPERATION OF THE MINI-PAM
745Y The most relevant YIELD-parameter determined by the
last saturating light pulse triggered by START, calculated
as follows:
YIELD = Y/1000 = (M-F)/M = ∆F/M = ∆F/Fm'
(Genty-parameter)
With a dark-adapted sample ∆F/Fm = Fv/Fm,
corresponding to the maximal yield of photochemical
energy conversion.
..E Relative rate of electron transport (ETR), display of
which requires optional Leaf-Clip Holder 2030-B. It is
calculated by the formula:
ETR = E = YIELD x PAR x 0.5 x ETR-factor
..L Light intensity in terms of PAR (quantum flux density of
photosynthetically active radiation), display of which
requires Leaf-Clip Holder 2030-B.
After every operation of START the obtained data set with the
corresponding time and date is entered into a RAM-memory, with a
storage capacity of 4000 data sets. The stored data can be called on
the display via the MEM-key. Previously recorded data can be
recalled by using the arrow-keys (∧ or ∨). Stored data can be printed
out via an RS 232 interface or transferred on a PC for further
analysis.
The MINI-PAM has been pre-programmed at the factory with
standard settings
(see list in 7.1) for all relevant measuring
parameters (for example Measuring Light Intensity, Gain, Damping,
Saturation Pulse Intensity, Saturation Pulse Width etc.). These
standard settings are optimized for measurements with standard leaf
samples at approx. 12 mm distance between fiberoptics and leaf
surface. For special applications, there is great flexibility for
appropriate adjustment of all measuring parameters with the help of
the extensive MODE-menu, using the arrow-keys (∧ and ∨) in
5
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