19
TOP VIEW
= infrared beam zone
3
Triggering the detector when
set to “least sensitive”
(Default setting)
Figure 11 – least sensitive
trigger
In
figure 11
, a body moving from position 1 to position
2, into the infrared beam zone, will create a pulse.
Moving from position 2 to 3, out of the other side of the
same infrared beam zone, will create a second pulse.
Additional movement from position 3 to 4 will create a
third pulse. If the detector is set to “least sensitive”
(default) and the body moves from position 1 to position
4 within 10 seconds then the detector will have received
3 pulses in 10 seconds. This means the detector will
have made a valid movement detection and will trigger,
indicated by the red light (only if in test mode or normal
mode but not in IPS mode).
This also applies if moving in the opposite direction to
the
figures 11 and 12
.
Figure 12 – least
sensitive trigger
Figure 12
shows another way in which the detector may be
triggered when the detector is set to “least sensitive”.
