Camera interfaces
197
Prosilica GT Technical Manual V3.2.0
Trigger rules
•
The end of exposure will always trigger the next Readout.
•
The end of exposure must always end after the current Readout.
•
The start of exposure must always correspond with the Interline Time if
Readout is true.
•
Exposure start delay equals the readout time minus the registered Exposure
Time.
Triggering during the idle state
For applications requiring the shortest possible trigger latency and the smallest
possible trigger jitter the user trigger signal should be applied when
Imaging
is
false and
Idle
is true. In this case, trigger latency and trigger jitter are as indicated
in the Specifications chapter.
Triggering during the readout state
For applications requiring the fastest triggering cycle time whereby the camera
image sensor is exposing and reading out simultaneously, apply the user trigger
signal as soon as a valid trigger ready is detected. In this case, trigger latency and
trigger jitter can be up to 1 row time because Exposure must always begin on an
Interline boundary.
The user trigger pulse width should be at least three times the width of the trigger
latency as indicated in the Specifications chapter.
For a more detailed description of the trigger concept for advanced users and
special scenarios, see the Triggering Concept application note at
www.alliedvision.com/en/support/technical-papers-knowledge-base
i
