Camera trigger
AVT Prosilica GT Technical Manual
V2.0.8
64
Trigger timing diagram
Notes on triggering
Figure 47: Prosilica GT internal signal timing waveforms
Term
Definition
User trigger
Trigger signal applied by the user (hardware
trigger, software trigger)
Logic trigger
Trigger signal seen by the camera internal logic
(not visible to the user)
Tpd
Propagation delay between the user trigger and
the logic trigger
Exposure
High when the camera image sensor is integrating
light
Readout
High when the camera image sensor is reading out
data
Trigger latency
Time delay between the user trigger and the start
of exposure
Trigger jitter
Error in the trigger latency time
Table 24: Explanation of signals in timing diagram
User trigger
Logic trigger
Exposure
Readout
Trigger ready
Imaging
Tpd
Trigger
latency
Interline time
Exposure
start delay
Trigger
jitter
Idle
Registered
exposure
time
Readout time
N
N+ 1
N
N+ 1
Note: Jitter at the
beginning of an exposure
has no effect on the
length of exposure.
