External Trigger Level-controlled Exposure

Also known as “Pulse Width Control” exposure. See the timing diagram below.

The external trigger edge initiates the exposure process. The active external trigger edge can be selected as either the low-high or high-low transition.

No delay from active trigger edge to start of exposure.

Exposure is stopped by the opposite edge on the trigger signal. Therefore the exposure time is defined by the trigger pulse duration.

Supports "Reset Mode" on page 47 trigger timing only.

External Trigger Level-controlled Exposure Timing

Exposure Controls via Sapera LT or GenICam Applications

Sapera

Genie Sapera parameters for Exposure Control:

FrameRate = 0.1 Hz up to max. frame rate supported by sensor in current mode of operation. Only available with Trigger disabled.

ExposureMode = {Programmable = 1, Pulse Controlled = 2} ExposureTime = Exposure duration in µs

In CamExpert, these parameters are available under “Sensor” tab. See "Accessing Features with Sapera++ LT" on page 68.

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

Genie Monochrome Series-GigE Vision Camera

Operational Reference 45

Page 47
Image 47
Faber M1400, M640 External Trigger Level-controlled Exposure, Exposure Controls via Sapera LT or GenICam Applications