ALLIED Vision Technologies Stingray F-504 - Manual (Page 187)

Controlling image capture
STINGRAY Technical Manual V4.4.4
185
Controlling image capture
Shutter modes The cameras support the SHUTTER_MODES specified in IIDC V1.31. For all
models this shutter is a global pipelined 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 Stingray cameras know also a trigger initiated by software (status and control
register
62Ch on page 283 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.
Trigger modi
Stingray cameras support IIDC conforming Trigger_Mode_0 and
Trigger_Mode_1 and special Trigger_Mode_15 (bulk trigger).
Trigger mode also known as Description
Trigger_Mode_0 Edge mode Sets the shutter time according to the value set in
the shutter (or extended shutter) register
Trigger_Mode_1 Level mode Sets the shutter time according to the active low
time of the pulse applied (or active high time in
the case of an inverting input)
Trigger_Mode_15 Programmable mode Is a bulk trigger, combining one external trigger
event with continuous or one-shot or multi-shot
internal trigger
Table 58: Trigger modi