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108 - DATA REDUCTION OF LARGE FILES
It is not uncommon for users to generate large data files (on the order of several megabytes) through some combination of (a) high speed acquisitions, (b) long acquisitions, and (c) multi-channel acquisitions. Users frequently encounter system limitations (such as storage space limitations) and find the files are difficult and slow in loading to memory.
AcqKnowledge stores the data in as compact a format as possible. Each sample takes up roughly two bytes of storage space. When a waveform (or a section of a waveform) is transformed, (i.e., filtered, integrated, and the like), each data point takes up roughly eight bytes of storage space. As a result of this, people sometimes see the size of some files change drastically after transforming one or more waves. Listed in this application note (pdf) are some tips for how to get the most out of your MP100 data acquisition system when working with large data files.
