More Specifications for DSA 2.9

Measurement and Analysis Capabilities/Real-Time Acquisition

• Display any combination of live signals in the time and/or frequency domain

• Log file to disc manually or with triggered and timed acquisition

• Auto load last acquisition from file for display or cycle for next measurement

• Preferences to allow for manual/auto arming, manual/auto trigger

• RPM acquisition from pulse train with dedicated counters or from analog inputs

• Run Notes to record user information in each data file

Spectrum Analysis

• Frequency and order domain power spectrum.

• Frequency response function magnitude, phase, coherence

• Coherent output power magnitude and coherence

• 1/1, 1/3, 1/6, 1/12, 1/24 octave band spectra

• Zwicker Stationary Loudness – ISO 532B standard

• Hanning and flattop windows

• RMS, Peak hold and vector averaging modes

• Linear and exponential weighted averaging

• FFT Block size from 256 to 131,072 samples, 128 to 65,536 spectral lines

• Linear, power and Power spectral density, EUpk, EUrms and EUPk-Pk units available,

• Linear, log and decibel scaling

Pre-processing Options

• Low-pass and High-pass filter

• Signal and double integration for mks units, plus g’s to ips and ips to mils.

• Sample rate conversion: up-sample and down-sample from file to new rates

• A, B, C - weighting for acoustic signals.

• Human body weighting filters: Wh, Wb, Wc, Wd, We, Wj, Wk, Wm, Wf

• For relevant standards compliance: http://www.ni.com/white-paper/2975/en/

Impact Testing

• View referenced frequency response magnitude, real, image, phase, and coherence

• Pre-triggered preview of windowed impact and response time history

• Force/exponential windowing

• Freeform and geometry based naming (component, subcomponent, point, direction)

• 3D waterfall display of acquired frequency response ensemble

• Export to text and uff-58 for use in 3rd party modal analysis tools

Rotating Machinery

• Compute the invertible Gabor transform for joint time-frequency analysis

• Order extraction with cursor driven interactive RPM proportional mask

• Mask width defined in orders or frequency

• Angle domain resampling from acquired pulse train for order domain display

• Order magnitude overlay accumulator vs time, RPM, revolution

• Export order display direct to text

More Specifications for DSA 2.9

Measurement and Analysis Capabilities/Real-Time Acquisition

• Display any combination of live signals in the time and/or frequency domain

• Log file to disc manually or with triggered and timed acquisition

• Auto load last acquisition from file for display or cycle for next measurement

• Preferences to allow for manual/auto arming, manual/auto trigger

• RPM acquisition from pulse train with dedicated counters or from analog inputs

• Run Notes to record user information in each data file

Spectrum Analysis

• Frequency and order domain power spectrum.

• Frequency response function magnitude, phase, coherence

• Coherent output power magnitude and coherence

• 1/1, 1/3, 1/6, 1/12, 1/24 octave band spectra

• Zwicker Stationary Loudness – ISO 532B standard

• Hanning and flattop windows

• RMS, Peak hold and vector averaging modes

• Linear and exponential weighted averaging

• FFT Block size from 256 to 131,072 samples, 128 to 65,536 spectral lines

• Linear, power and Power spectral density, EUpk, EUrms and EUPk-Pk units available,

• Linear, log and decibel scaling

Pre-processing Options

• Low-pass and High-pass filter

• Signal and double integration for mks units, plus g’s to ips and ips to mils.

• Sample rate conversion: up-sample and down-sample from file to new rates

• A, B, C - weighting for acoustic signals.

• Human body weighting filters: Wh, Wb, Wc, Wd, We, Wj, Wk, Wm, Wf

• For relevant standards compliance: http://www.ni.com/white-paper/2975/en/

Impact Testing

• View referenced frequency response magnitude, real, image, phase, and coherence

• Pre-triggered preview of windowed impact and response time history

• Force/exponential windowing

• Freeform and geometry based naming (component, subcomponent, point, direction)

• 3D waterfall display of acquired frequency response ensemble

• Export to text and uff-58 for use in 3rd party modal analysis tools

Rotating Machinery

• Compute the invertible Gabor transform for joint time-frequency analysis

• Order extraction with cursor driven interactive RPM proportional mask

• Mask width defined in orders or frequency

• Angle domain resampling from acquired pulse train for order domain display

• Order magnitude overlay accumulator vs time, RPM, revolution

• Export order display direct to text