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Set Sensor Parameter
optoNCDT 1420
7.4.4 Triggering
7.4.4.1 General
The optoNCDT 1420 measurement input and output is controllable through an external trigger signal or a
command. Triggering affects the analog and digital output. The measurement value at the time of triggering is
output delayed, see Chap. 6.4.
- Triggering does not influence the measuring rate resp. the timing so that between the trigger event (level
change) and the start of output always lie 3 cycles + 1 cycle (Jitter).
- Micro-Epsilon recommends the abdication of data reduction, for example, by sub-sampling when the
triggering is used.
- The multifunctional input is used as external trigger input, see Chap. 5.4.6.
- Factory setting: no triggering, the sensor starts data transmission right after start-up.
- Pulse duration of the “Trigger in“ signal must be at least 50 µs.
Triggering of measured value acquisition and output have the same time behavior.
Input trigger
/
Output
trigger
Level A continuous measurement task is following as long as
the chosen level remains the same. Choice of level, see
Chap. 7.3. Pulse duration must be at least a cycle time.
The following pause must be at least a cycle time..
Edge infinite Edge selection, see Chap. 7.3. “0“ end trigger,
“1 ... 16382“ values per trigger, “16383“ endless trigger
manual Number Value
Software infinite A software triggering is started by clicking the button Re-
lease trigger. “0“ end trigger
“1 ... 16382“ values per rigger, “16383“ endless trigger
manual Number Value
Inactive No triggering
Grey shaded
fields require a
selection.
Value
Dark-bordered
fields require you
to specify a value.
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