CHAPTER 7 THE MODE-MENU
excess light energy which is actively dissipated by plants into heat in
order to avoid photodamage. Contrary to qN, NPQ-determination
does not require knowledge of Fo and is not affected by non-
photochemical quenching of Fo. NPQ is set to 0.000 if M>Fm.
On/off switch of repetition clock which
serves to trigger a number of functions
which are specified in menu point 29: CLOCK ITEM. This function
can be also directly started by double key operation ON + MEM.
28: REP-CLOCK: OFF(SET)
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This menu point allows to choose between
the following functions to be triggered by
the REPETITION CLOCK:
29: CLOCK-ITEM:SAT(SET)
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SAT-PULSE, ACT-LIGHT, ACT + YIELD, LIGHT CURVE,
L-CURVE + REC., IND. CURVE , IND.C + REC.
Setting of clock interval, which is the time
between two consecutive saturation pulses
(or other functions) triggered by the REP-CLOCK (menu point 28).
The setting can be modified via SET and the arrow-keys in 10 s
steps. Possible settings range from 0:10 to 42:30. When moving
beyond the maximal time, the lowest values are reached and vice
versa.
30: CLK-TIME: 0:30(SET)
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Display of present time which can be
modified via SET and the arrow-keys.
With SET one can move from the hours to minutes and vice versa.
The change is terminated via MODE.
31: TIME 14:43:51 (SET)
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Display of present date which can be
modified via SET and the arrow-keys.
With SET one can move from the days to months and vice versa. The
change is terminated via MODE.
32: DATE 17-OCT (SET)
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Display of present year which can be
33: YEAR 1999 (SET)
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