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Hierarchical Waveform Storage Data File (.hws) format is based on the HDF5 file format, which is a widely used and efficient file format for storing scientific and engineering data such as images, vector arrays, and structured and unstructured grids. For more information about HDF5, refer to the HDF Group web site at http://www.hdfgroup.org/HDF5/.
HWS is the file type of choice due to its flexibility. It is capable of saving device configuration settings as well as multiple channels of waveform data, measurements, and associated header information. HWS also offers compression options, making this format the best choice for very large or multiple data records.