Exposure Control

Grabber-Controlled Exposure

This board supports the following grabber-controlled exposure class of cameras:

Imaging	CamConfig	Camera operation class
AREA	PxxRG	Asynchronous progressive scan, grabber-controlled exposure
LINE	LxxxxRG	Grabber-controlled line-scanning, grabber controlled exposure
LINE	LxxxxRG2	Grabber-controlled line-scanning, grabber controlled exposure, dual signal
LINE	LxxxxRP	Grabber-controlled line-scanning, permanent exposure
TDI	LxxxxRP	Grabber-controlled line-scanning, permanent exposure

If the camera belongs to the grabber-controlled exposure class, you can specify the desired exposure time through parameters Expose_us and optionally ExposeTrim. This board provides an exposure time range of 1 µs up to 5 s.

The lower limit of the exposure time range is defined by the camera parameter ExposeMin_us. The upper limit of usable exposure time range is defined by the camera parameter ExposeMax_us.

Note. Both parameters prevent using the camera outside the permitted range.

The grabber controls the exposure time through the reset line and optionally —in case of LxxxxRG2 operation mode— through the auxiliary reset line.

Any of the four Camera Link upstream control line can be used for these purposes with independent polarity control. MultiCam selects automatically the exposure control line(s) according to the value of camera parameters CC<1,2,3,4>Usage; it configures automatically the polarity according to camera parameters ResetEdge and AuxResetEdge.

Uncontrolled Exposure

This board supports the following grabber-controlled exposure class of cameras:

Imaging	CamConfig	Camera operation class
AREA	PxxSC	Synchronous progressive scan, camera-controlled exposure
AREA	PxxRC	Asynchronous progressive scan, camera-controlled exposure
LINE	LxxxxSP	Free-running, permanent exposure
	LxxxxSC	Free-running, camera-controlled exposure
	LxxxxRC	Grabber-controlled line scanning, camera controlled exposure

If the camera belongs to the camera-controlled exposure class, you can specify the actual exposure time through parameter TrueExp_us. This board provides an exposure time range of 1 µs up to 20 s.