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5.4 MULTIPLE MEASUREMENT
In addition to the single measurement of each available protocol, it is possible to perform also the multiple measurements of the same
protocol over a period of time. The FluorPen may be set up to perform repeated measurements of the same parameter or protocol by
selecting Settings > Multi (see Menu tree, page 27):
Multi type – select the required parameter or protocol - Ft, QY, OJIP...
Multi interval – set the time interval between measurements (the interval represents period from the protocol beginning to the next
protocol beginning and so, the interval should be longer than the duration of the selected protocol)
Multi repeats – set the number of measurements
• Prepare the sample for measurement as described above.
• Select in the display menu: Measurement > Multi.
• Press SET to start the measurements.
• Values of measured parameters (Ft, QY) will appear on the FluorPen display after each measurement repetition and will be stored to
the device memory automatically. If protocol (OJIP, NPQ, LC) was used all data will be saved to the device memory and visualization
will be possible after the data download to the PC (page 44).
Modes of Multiple measurement:
There are two modes of the multiple measurements in the FluorPen.
1. The device is connected via USB to the computer.
The device measures according to the predefined protocol, interval and repeats. The device does not switch off between measurements
and display a progress on the front control display. After reaching of the predefined number of repeats, the device turns off the Multiple
measurement automatically.
2. FluorPen is not connected to the computer.
The device measures according to the predefined protocol and interval but it doesn’t stop the Multiple measurement after reaching of
the predefined repetitions: the device measures continuously as long as it is stopped. Also, the device turns on and off between the
measurements automatically.
The Multiple measurement can be stopped manually by switching on the device (via the SET button) during the switched off period.
Should the device be in the measuring mode, then the measurement needs to be interrupted via a long press of the MENU button and
after that the Multiple measurement needs to be stopped by switching on the device via the SET button.