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Advanced Settings
confocalDT 24x1
Software triggering.
Starts outputting values as soon as a software command
(instead of the trigger input) or the
Initiate trigger
button is activated. The point
in time is not defined as accurately. If trigger conditions are met, the controller outputs a
defined number of measurements. Value range between 1 and 16383. Value output can
be stopped with a command, see Chap.
Encoder triggering.
One of the three encoder inputs can be used as trigger signal.
If trigger conditions are met, the controller outputs values and then waits for subsequent
trigger signals.
Reading encoder
Lower limit
Step size
Starting value
Trigger points
Upper limit
Fig. 54 Definition of terms for encoder triggering
i
Within the step size there are no readings. Keep this, if measurement averaging is
used.
6.10.1 Triggering the Measured Value Recording
The current array signal is only further processed after a valid trigger event and the
measured values are calculated from this. The measurement data is then transferred
for further calculation (e.g. averaging or statistics), as well as the output via a digital or
analog interface.
When calculating averages or statistics, measured values immediately before the trig-
ger event cannot be included; instead older measured values are used, which had been
entered during previous trigger events.
6.10.2 Triggering the Measurement Value Output
The calculation of the measured values is performed continuously and independently
of the trigger event. A trigger event only triggers the output of the values via a digital or
analog interface.
Thus values measured immediately before the trigger event are used when calculating
means (averages) or statistics.
The triggering of the measured value recording and output have the same timing.
6.10.3 Trigger Time Difference
Since the exposure time is not started directly by the trigger input, the respective time dif-
ference to the measurement cycle can be output. This measured value can, for example
serve to accurately assign measurements to one place, when measuring objects are
scanned at a constant speed and when each track starts with a trigger.
The time from the start of the cycle until the trigger event is defined as a trigger time
difference. The output of the time determined occurs 3 cycles later, due to the internal
processing.
N
N+1
N+2
N+3
N+4
Exposure
Start
analog N
Input TrigIn
Measurement output
Trigger time
difference
Trigger time
difference
digital N +
Fig. 55 Definition of the trigger time difference
Fields with a grey
background require a
selection.
Value
Fields with a dark
border require the
specification of a value.
