Most cameras and frame grabbers come with trigger inputs. By enabling hardware triggering in StreamPix, it is possible to capture one or multiple images based on an external trigger signal. NorPix can build systems that trigger virtually any number of cameras simultaneously.

If an external trigger source is not available, StreamPix includes customs triggering modules that can be used to generate a trigger signal.

NI-DAQmx Pulse Generator:	MCC Pulse Generator:
supports multi-channel configuration available on native 64-bit platforms	supports mono-channel configuration
National Instruments: CA1000 control box with PCI6601 digital timing generator. (Available from National Instruments, CA1000 control box not required)	Measurement Computing: USB-4301 5-channel counter/timer

These modules control the digital timing generators directly from StreamPix. They generate external pulses to sync multiple cameras simultaneously and make sure cameras acquire images at the exact same time. The modules allow the timer control to generate an output pulse at a user-defined frequency. The pulse frequency can run from 0.01 Hz to 1000 Hz.

Note: It is possible to increase the pulse frequency in order to find the maximum possible frequency before the camera starts dropping some trig and frames. In trigger mode, an internal electrical circuitry prevents the camera from starting a new exposure until the previous frame is completely exposed and transferred.

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