Data Translation DT9837, User Manual

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Chapter 1
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• QuickDAQ FFT Analysis Option – When enabled with a purchased license key, the
QuickDAQ FFT Analysis option includes all the features of the QuickDAQ Base version
with the FFT Analysis option plus basic FFT analysis features, including the following:
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The ability to switch between the Data Logger time-based interface and the FFT
Analyzer block/average-based interface.
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Supports software, freerun, or triggered acquisition with accept and reject controls for
impact testing applications.
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Allows you to perform single-channel FFT (Fast Fourier Transform) operations,
including AutoSpectrum, Spectrum, and Power Spectral Density, on the acquired
analog input data. You can configure a number of parameters for the FFT, including
the FFT size, windowing type, averaging type, integration type, and so on.
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Allows you to display frequency-domain data as amplitude or phase.
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Supports dB or linear scaling with RMS (root mean squared), peak, and peak-to-peak
scaling options
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Supports linear or exponential averaging with RMS, vector, and peak hold averaging
options.
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Supports windowed time channels.
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Supports the following response window types: Hanning, Hamming, Bartlett,
Blackman, Blackman Harris, and Flat top.
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Supports the ability to lock the waveform output to the analysis frame time.
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Allows you to configure and view dynamic performance statistics, including the input
below full-scale (IBF), total harmonic distortion (THD), spurious free dynamic range
(SFDR), signal-to-noise and distortion ratio (SINAD), signal-to-noise ratio (SNR), and
the effective number of bits (ENOB), for selected time-domain channels in the Statistics
window.
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Supports digital IIR (infinite impulse response) filters.
• QuickDAQ Advanced FFT Analysis Option – When enabled with a purchased software
license, the QuickDAQ Advanced FFT Analysis option includes all the features of the
QuickDAQ Base version with the FFT Analysis option plus advanced FFT analysis
features, including the following:
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Allows you to designate a channel as a Reference or Response channel.
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Allows you to perform two-channel FFT analysis functions, including Frequency
Response Functions (Inertance, Mobility, Compliance, Apparent Mass, Impedance,
Dynamic Stiffness, or custom FRF) with H1, H2, or H3 estimator types,
Cross-Spectrum, Cross Power Spectral Density, Coherence, and Coherent Output
Power.
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Supports the Exponential response window type.
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Supports the following reference window types: Hanning, Hamming, Bartlett,
Blackman, Blackman Harris, FlatTop, Exponential, Force, and Cosine Taper windows.
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Supports real, imaginary, and Nyquist display functions.
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Allows you to save data in the .uff file format.