ALLIED Vision Technologies Guppy PRO F-503 - Manual (Page 141)

Controlling image capture
Guppy PRO Technical Manual V4.0.0
139
Controlling image capture
Global shutter (CCD cameras only)
Shutter modes The cameras support the SHUTTER_MODES specified in IIDC V1.31. For all
models (except Guppy PRO F-503) this shutter is a global shutter; meaning
that all pixels are exposed to the light at the same moment and for the same
time span.
Pipelined Pipelined means that the shutter for a new image can already happen, while
the preceding image is transmitted.
Continuous mode In continuous modes the shutter is opened shortly before the vertical reset
happens, thus acting in a frame-synchronous way.
External trigger Combined with an external trigger, it becomes asynchronous in the sense
that it occurs whenever the external trigger occurs. Individual images are
recorded when an external trigger impulse is present. This ensures that even
fast moving objects can be grabbed with no image lag and with minimal
image blur.
Software trigger Guppy PRO cameras know also a trigger initiated by software (status and
control register
62Ch on page 228 or in SmartView by Trig/IO tab, Stop
trigger button).
Camera I/O The external trigger is fed as a TTL signal through Pin 4 of the camera

I/O connector.