Circular buffers – MTS Multipurpose Elite User Manual
Page 149
Typically, set the buffer size so that there are one to five buffers per second. You can set the buffer size
between 1 and 16,000 data samples.
Note:
When combining Peak-Valley triggering with a Timed trigger type, the buffer size must be large
enough to accommodate the reordering of the peak data relative to the timed data when peaks and
valleys are identified.
DAQ rates and system performance
Acquiring and saving data at fast rates can cause the computer to become slow. If the acquisition rates
are too fast, data over-run can occur. If this happens, the test stops and a message is logged.
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Task
(p. 150)
Reference
Circular Buffers
A circular buffer stores data continuously without processing the data. When the buffer is full, new data
overwrites the oldest data. The circular buffer is useful for acquiring data that captures some crucial event
(such as specimen failure), where data is not required for the whole test. The data in the buffer is passed
to the application for processing when any of the following events occur:
•
The test is stopped.
•
The activity reaches its preset count.
•
The activity ends.
Circular Buffers Diagram
Circular buffer size
The buffer size specifies the maximum number of samples the buffer stores. You can set the buffer size
between 1 and 16,000 data samples (default is 1024).
MTS TestSuite | 149
Data Acquisition (DAQ)