Dalsa 1M75-SA User Manual page 25

1M28 and 1M75 User's Manual
Figure 15: Freerunning Mode
PCLK
FVAL
LVAL
DATA
Note: To set integration mode and parameters, refer to Chapter 3. Software Interface:
Controlling the Camera.
Triggered Mode
In triggered mode, image aquistition begins with the rising edge of an external trigger
pulse. The image is read out after the preset exposure time. After readout, the sensor
resets and the camera waits for a new trigger pulse. The data is output on the rising edge
of the pixel clock.
The signals FRAME_VALID (FVAL) and LINE_VALID (LVAL) mask valid image
information. The number of clock pulses after exposure CPRE is defined by the
calculation of the frame time.
Figure 16: Triggered Mode
EXSYNC
INTEGRATION
Triggered Mode with External Exposure Control
In triggered mode with external exposure control, sensor control is reset with the rising
edge of an external trigger pulse. The exposure of the image is controlled by the external
signal PRIN. The sensor control is clocked in such a way that that the image exposure
becomes active one clock later. The image is read out after the exposure time has elapsed.
DALSA
PRELIMINARY
Integration
PCLK
FVAL
LVAL
DATA
Frametimer
CPRE
Line Pause
First Line
EXSYNC is ignored in mode constant image data rate
CPRE
Line Pause
First Line
Line Pause Last Line Line Pause
Last Line
Line Pause Line Pause
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