The Software Concept
triggered operation:
As long as there is no flank change from Low to High, the camera will
not deliver image data.
The exposure of the sensor will start with a maximum delay of 100 µs
after the Low-High change-over at the external trigger entry.
The exposure time can be adjusted via software.
If a repeated trigger impulse is triggered during an exposure
(transmission), undefined conditions may happen during the picture
recording.
Figure 33: Waveform Trigger
To test the trigger functions, please use the PHYTEC demo program
(
section 2.4
).
3.1.2.2
Digital Output
To control external components with the camera (for example a light)
some models of the USB-CAM series has a digital switching output.
Inside the camera is thereby a MOSFET transistor. This transistor is
software controlled. It can connect the output to Ground or it is closed
(isolating).
The digital output must be wired as shown in
Figure 34
.
© PHYTEC Messtechnik GmbH 2011 L-740e_0
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