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66
Features and Configuration Options
Calibir GXM640 IR Camera User's Manual
Free-Running Mode Using External Triggers
External
Trigger
Frame Transfer
(to Host)
(Free-running
)
External Trigger
debounced
t
debounce
t
debounce
t
debounce
Accepted
trigger
(timestamped)
t
trig-to-out
Rejected
trigger
(counter)
Frame
acquisition
(Sensor)
(Free-running
)
t
trig-to-acq
(1)
(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.
Note:
33.333ms (30 fps)
Figure 21: External Trigger Wave Diagram: Free-Running
Although the frame acquisition timing is dependent on when the camera receives the
command and starts acquiring images, external triggers can be can be
synchronized with the start of frame pulse available on output Line 2.
