Figure 33: External Trigger Wave Diagram: Free-Running - Teledyne FLIR A68 Series User Manual

Free-Running Mode Using External Triggers
External
Trigger
External Trigger
debounced
Accepted
trigger
(timestamped)
Rejected
trigger
(counter)
Frame
acquisition
(Sensor)
(Free-running)
Frame Transfer
(to Host)
(Free-running)
Note:
(1) This second detected trigger is rejected because already one
has been detected in the same frame acquisition period.
Consequently this trigger is not timestamped.
Although the frame acquisition timing is dependent on when the camera receives the
AcquisitionStart command and starts acquiring images, external triggers can be can be
synchronized with the start of frame pulse available on output Line 2.
FLIR A68/A38 Series IR Camera User's Manual
t t
debounce debounce
33.333ms (30 fps)

Figure 33: External Trigger Wave Diagram: Free-Running

t
debounce
(1)
t
trig-to-acq
t
trig-to-out
Features and Configuration Options • 83