18
Functional principle of the joker² light barrier system
Copyright eltima electronic 2022
The directional cross barrier
Symbol:
, Level:
The directional cross barrier is a combination of a directional and a cross bar-
rier. The action mode is met if at first the light barrier 1 and subsequently the
cross barrier formed by 2 and 3 is interrupted.
When light barrier 1 is interrupted, the system is activated and waits for the
cross barrier to be interrupted. Once this happens, the action mode is
deemed to be met and the trigger is passed on to the digital part. As with the
simple directional barrier, the action may not work as predicted if an animal
interrupts barrier 1, but then does not pass the cross barrier.
Once the action mode is met, all three light barriers must be reset before the
system is ready for the next sequence.
The time trigger
Symbol:
, Level:
Time-scheduled recordings can be made with the time trigger. For this a start
time, an end time and a programmable trigger period are available. The ac-
tion mode shall be deemed to be met, if the start time is reached and subse-
quently whenever the programmed period has expired until the end time is
reached. This mode can be used for time lapse photography, for example.
For this action mode no light barriers are needed.