CHAPTER 12 MEASUREMENTS WITH THE MINI-PAM
6: INDUCTION-C+REC. (IC+)
The CLOCK can be very useful for long term characterization of
the photosynthetic performance of a plant in its natural environment,
e.g. over the course of a day. As after every YIELD-determination
the corresponding data set is stored in MEMORY, in principle the
researcher just needs to start the CLOCK in the morning and collect
the data at night. In this context it is important to note that the full
capacity of a freshly charged battery allows approximately 12 hours
continuous operation of the MINI-PAM with standard YIELD-
determination every minute (total of ca. 720 saturation pulses). When
the CLOCK is running, the usual power saving function of AUTO-
OFF is disabled, with the consequence that there could be excessive
discharge of the battery. Therefore, in order to avoid battery damage
(see 11.1) the CLOCK is automatically switched off when battery
voltage drops below 8.5 V.
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