User manual

Data acquisition
The process of measuring data is called "Data acquisition". It is abbreviated DAQ.
There are several ways to collect data with the CEBO-STICK. We call them "DAQ
modes".
This section gives you guidance on how to acquire analog and digital data with CEBO-
STICK.
DAQ modes
Some measurement problems require more effort than reading one single input.
Depending on the circumstances, a fixed number of measurements with well defined
timing or an endless stream of measurements is desired. Sometimes, data acquisition
should take place only when there is a trigger event (i.e. a external digital signal
switches from low to high).
Software timed - single value input/output
The most basic form to sample an input or modify an output. Exact timing is not
predictable, as it strongly depends on host system processing of requests targeting the
USB interface.
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Figure 6: Data acquisition modes