Principles of Operation
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Continuous asynchronous mode
– The DT3145 board
continuously acquires an unlimited number of ROIs/frames and
saves the appropriate data to buffers in memory until you stop
the acquisition. You are responsible for managing the data in the
buffers so that it is retrieved before the buffer is overwritten.
Continuous mode is an asynchronous acquisition, where the
operation starts and then returns control to you immediately,
allowing you to perform other operations while data is acquired.
For example, assume that you specified the acquisition type as
area-scan, the acquisition mode as continuous asynchronous
mode, and the number of buffers as 3. When the acquisition
operation is started, the software allocates three buffers, acquires
the first ROI and stores it in buffer 1, acquires the second ROI and
stores it in buffer 2, then acquires the third ROI and stores it in
buffer 3. Then, the process repeats so that the fourth ROI is stored
in buffer 1 (overwriting any data previously stored there), the
fifth ROI is stored in buffer 2 (overwriting any data previously
stored there), and so on. The operation repeats until you stop it.
You must manage the buffers so that the data in buffers 1 through
3 is read before the buffers are overwritten.
Specify ContinuousAsync in software to use this mode.
Note:
During asynchronous acquisitions, your application program
is notified by Active-X events that various conditions (such as when
one or more buffers is filled or when the acquisition has completed)
occur.
Summary of Contents for DT3145
Page 1: ...DT3145 UM 19603 B User s Manual...
Page 4: ......
Page 32: ...Digital I O Signals 22...
Page 33: ...23 A Specifications...
Page 37: ...27 B Connector Pin Assignments J2 Connector 28 STP15 Connectors and Screw Terminals 30...
Page 42: ...Appendix B 32...
Page 43: ...33 C Values for Use with the DT Active Camera Link Frame Grabber Control...
Page 50: ...Appendix C 40...