Point Grey Flea3 USB 3.0 Technical Reference 6 Image Acquisition
6.4.6 Trigger Modes
6.4.6.1 Trigger Mode 0 (“Standard External Trigger Mode”)
Trigger Mode 0 is best described as the standard external trigger mode. When the camera is put into Trigger Mode 0,
the camera starts integration of the incoming light from external trigger input falling/rising edge. The Shutter
valuedescribes integration time. No parameter is required. The camera can be triggered in this mode by using the
GPIO pins as external trigger or by using a software trigger.
It is not possible to trigger the camera at full frame rate using Trigger Mode 0.
Figure 6.3: Trigger Mode 0 (“Standard External Trigger Mode”)
For FL3-U3-32S2 and FL3-U3-88S2 models operating in this trigger mode,
exposure is controlled by the global reset feature of the sensor. This feature may
reduce distortion artifacts typical of rolling shutter sensors. For more
information, see Rolling Shutter Artifacts on page 128.
6.4.6.2 Trigger Mode 1 (“Bulb Shutter Mode”)
Also known as Bulb Shutter mode, the camera starts integration of the incoming light from external trigger input.
Integration time is equal to low state time of the external trigger input.
Revised 9/27/2012
Copyright ©2011-2012 Point Grey Research Inc.
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