Interface Connection LDM41A and LDM42A Manual
Page 44 ASTECH GmbH
The logic state of the switching output follows from the mathematical sign of
AH.
In the case of a positive AH, the output switches
- with increasing distance:
from LOW to HIGH if the distance is greater than (AC ±AH/2)
from HIGH to LOW if the distance is greater than (AC+AW+AH/2)
- with decreasing distance:
from LOW to HIGH if the distance is smaller than (AC +AW-AH/2)
from HIGH to LOW the distance is smaller than (AC-AH/2)
In the case of a negative AH, the output switching pattern will be inverse.
Figure 19 : Digital switching output behavior with positive and negative hysteresis
Example:
A moving object is assumed to be monitored within a window of 10 m to 11 m
with a hysteresis of 0.2 m.
AC10
AH0.2
AW1
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