User`s manual

Preliminary
46 • Operational Reference Genie Monochrome Series-GigE Vision Camera
GenICam features for Exposure Control:
ExposureMode = {Off = 0, Timed = 1, TriggerWidth = 2, TriggerControlled = 3,
ResetContinuous = 4}
ExposureTimeRaw = Exposure duration in µs
AcquisitionFrameRate = Controls the desired frame rate of the camera in mHz
(0.001 Hz). Only available when trigger is disabled.
AcquisitionFrameCount = Number of frames to be acquired in MultiFrame
acquisition mode
AcquisitionMode = {Continuous = 0, SingleFrame = 1, MultiFrame = 2}
AcquisitionStart = Start image capture using currently selected acquistion mode
AcquisitionStop = Stop image capture
AcquisitionAbort = Abort image capture
Synchronization Timing
Genie cameras support two types of sensor synchronization used to align the exposure to sensor
timing:
• Synchronous Mode: Exposure is synchronous to the line timing of the sensor. Exposure
granularity is 1µs and the readout can be concurrent to the exposure for the fastest possible frame
rate.
• Reset Mode: Timing is reset to initiate exposure of next frame. Exposure granularity is 1µs, but
readout must be sequential to exposure, reducing the maximum achievable frame rate.
Synchronous Mode
• Synchronous mode starts the exposure period aligned to the sensor horizontal line timing and the
programmable duration granularity is 1µs.
• In the case of the Genie M640, a horizontal line occurs every 31.77µs.
• Exposure duration is from a minimum of 100µs up to 4 sec.
• In this mode, sensor exposure and sensor readout of the previous frame's exposure occur
simultaneously. This allows operating the sensor up to its maximum frame rate.
• Any trigger received before the end of the exposure is ignored. The application can elect to
receive messages about ignored triggers. See "
Events" on page 62.
• Since the external trigger is asynchronous with the Genie horizontal line timing, the frame
exposure start is subject to 1 horizontal line jitter.