Operating Instructions
JETI spectroradiometer spectraval 15x1
Document Revision 105
5.3.2 External Control of the Measurement
A measurement can be initiated externally by a shortcut between the ground (GND)
and trigger (TRG) pins. This can be done, e.g., by a foot push-button. Furthermore, it is
possible to use a TTL signal to start a measurement. This is done with the falling edge
of the signal.
Both triggering versions act similarly as pressing the green Measurement button of the
JETI LiVal software.
See the firmware description to change the settings.
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