PCIe-AIO14 User Manual (Rev 1.2)
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http://www.daqsystem.com
5. Software
It implements a library (API) for easy access to various functions of the PCIe-AIO14 board, and
provides a sample program to the user.
5.1 Operation Mode
Appropriate API functions should be used depending on the operation such as the method of
storing data collection samples in internal memory, the method of reading buffer data in the
application, the use of trigger function, etc.
Acquisition data storage consists of a continuous mode, which operates as a ring buffer format
in succession from the beginning of the memory to the end address (Over-Writing), and a single
mode in which data is written from the beginning to the end and the acquisition function is
stopped.
How to read buffered data in the App can be read by a certain number of samples or by data
blocks.
The trigger mode stores samples before and after the software trigger occurs and stops the
acquisition function.
[Figure 5-1] shows the function corresponding to the operation order for each mode.
[Fig 5-1. Operation sequence and function]
