Exposure Time Chunk - Basler acA2040-55 User Manual

AW00123409000

7.23.3.3 Exposure Time Chunk

The exposure time chunk feature adds a chunk to each acquired image containing the exposure
time parameter value in µs used for the image acquisition.
When using the trigger width exposure mode the exposure time chunk feature is
not available.
For more information about trigger width exposure, see Section 6.4.3.2 on
page 129
To enable the exposure time chunk:
1. Use the Chunk Selector to select the Exposure Time chunk.
2. Use the Chunk Enable parameter to set the value of the chunk to true.
Once the exposure time chunk is enabled and Chunk Mode Active (see Section 7.23.4 on
page 347) is enabled, the camera appends an exposure time stamp chunk to each acquired image.
After an image with an appended chunk has been received by your computer the chunk must be
retrieved. For information about retrieving data chunks, see Section 7.23.5 on
You can set the Chunk Selector and Chunk Enable parameter value from within your application
software by using the Basler pylon Camera Software Suite. The following code snippet illustrates
using the API to activate the chunk mode, select the exposure time chunk, and enable the exposure
time chunk:
// make chunk mode active, select and enable Exposure Time chunk
camera.ChunkSelector.SetValue(ChunkSelector_ExposureTime);
camera.ChunkEnable.SetValue(true);
You can also use the Basler pylon Viewer application to easily set the parameters.
For more information about the pylon Camera Software Suite and the pylon Viewer, see Section 3.1
on page 61.
Basler ace USB 3.0
Features
page 348.
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