What is the difference between Shield and DSA?
The Shield system is designed for production and laboratory automation tasks. It will typically be used to create standardized data sets under the direction of a machine or test cell sequencing system. DSA 2.9 is an NVH field analyzer. As such, it is used interactively by an operator to acquire data and produce a variety of standard computations such as spectra and order cuts.
What kind of file formats does Shield support?
The Shield system’s built-in file conversion utility will export to .wav, .uff, .csv, .txt, .hdf and .mat file formats. The utility will import from all but .mat files.
What is a results file?
Results files are in National Instruments TDMS format and contain metrics, waveforms and meta data derived from signal processing applied to an individual time history (data) files. Results files can be produced by the Shield PC application, the NVH controller and the Trove batch processor. In each case, a configuration file defines the processing of a data file to produce a results file.
Can I listen to my waveform?
The Shield PC application has the ability to play out through audio any of the dynamic channels in a currently opened data file.
Can I see my calibration history for a machine?
Yes, Shield has a built-in calibration utility that will place an NVH controller into a calibration mode. During calibration, the user will present a reference source to a sensor and live data is streamed to Shield from the NVH controller while a calibration is computed. The calibration factor and history of each physical channel is then retained on the NVH controller.
I have a month’s worth of data files to process with new or altered metrics. How can I process them all at once?
In a production environment there is often a need to process many files in a new way. There is a tremendous amount of value in the production database, and Signal.X Trove provides a great way to leverage that value to obtain valid answers to “what if” questions through its Batch Processing utility. There are many features to this process by which a user can generate reports on a recurring schedule as data is acquired and stored on the controller, view large sets of waveform results, tabulate the data for presentations, and more. You can learn more about this here.
My question isn’t listed here. What do I do?
Please feel free to contact us with any questions or comments.