Baumer VCXG - Overlapped Trigger Mode: Exposure Time Decrease

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8.3.5.3 Overlapped Operation: t
exposure(n+2)
< t
exposure(n+1)
If the exposure time (t
exposure
) is decreased from the current acquisition to the next acquisi-
tion, the time the camera is unable to process occurring trigger signals (t
notready
) is scaled
up.
When decreasing the t
exposure
such, that t
notready
exceeds the pause between two incoming
trigger signals, the camera is unable to process this trigger and the acquisition of the im-
age will not start (the trigger will be skipped).
Exposure
Readout
t
exposure(n)
t
readout(n+1)
t
readout(n)
t
exposure(n+1)
t
exposure(n+2)
t
triggerdelay
t
min
Tr
igger
Exposure-
A
ctive
t
Exposure-
Active(n)
t
ExposureActiveDelay
t
Exposure-
Active(n+1)
Tr
iggerReady
t
notready
Notice
From a certain frequency of the trigger signal, skipping triggers is unavoidable. In gen-
eral, this frequency depends on the combination of exposure and readout times.
Image parameters:
Offset
Gain
Mode
Partial Scan
Timings:
A - exposure time
frame (n) effective
B - image parameters
frame (n) effective
C - exposure time
frame (n+1) effective
D - image parameters
frame (n+1) effective
E - earliest possible trigger
F - frame not started /
trigger skipped