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Functional principle of the joker² light barrier system
Copyright eltima electronic 2022
The digital part
The digital part receives the trigger of the analog part and controls the out-
puts.
The Outputs
The jok
e
r
²
light barrier system has four equivalent outputs, a to d, which can
control various devices. These can be cameras, flash devices, solenoid valves,
relays, etc...
Each output has two solid state switches to turn on and off the connected
devices. If the connected device is a camera, then switch 1 is equivalent to
half pushing the release button (which will activate the camera) while switch
2 is equivalent to fully pushing the release button, which will activate the
shutter. Usually the two switches of the jok
e
r
²
system are turned ON or OFF
at the same time.
A number of parameter determine the behaviour of the outputs. These are
stored in a non-volatile memory as a parameter set for each output.
A trigger condition must be met for an output to switch. The trigger is set by
the analog part, as previously described, if a light barrier has been inter-
rupted or an action mode has been
met. The switching behaviour then
depends on the parameters de-
scribed below.
The activity of the outputs is shown
in the display, see Figure 17. The
camera icon shows that at least
one output is currently switched.
Which one is indicated by the let-
ters a to d.
Output parameters
Lag time
Name:
lag time
, Levels:
,
,
,
Default setting: 0 ms
The lag time is the time that passes between the trigger and the switching of
the contacts of an output.
range
unit
step
0- 8800
µs
200 µs
0 - 9999
ms
1 ms
0 - 3600
s
1 s
0 - 60
min
1 min
Figure 17: Icons for the outputs