Sound and Vibration


  • Hardware Supported: Data Translation DT-9800 series
  • Sampling Rate: highest rate supported by Data (2.0 MHz using DT-9832A)
  • Frequency Span: Up to 1/2 of selected sampling rate
  • Sampling Precision: 8, 16 or 24 bit (hardware dependent)
  • Maximum Channels: 16 (hardware dependent)
  • Selectable Input Voltage Range (gain), AC or DC coupling, IEPE Current source, Single Ended or Differential Inputs (hardware dependent)
  • Tachometer input channel support: Plot RPM versus Time as well as dedicated RPM display window.
  • Triggering: Analog or TTL with user Accept/Reject option.  Selectable threshold, channel and delay. Edge or Level detection.
  • Run Control: automatically stop after user selectable FFT count or time limit
  • Modes: Real-Time, Recording, Post-Process
  • Post-Process Editing: Cut, Copy, Paste, Play, Play Special, Mute, Gain Adjust, DC Offset, Filter
  • Digital Filtering Options: Low Pass, High Pass, Bandpass, Notch or User defined filter shape
  • Hard Disk Recording: Automatic rollover when Wave file size limit reached.
  • Displays: Time Series, Spectrum, Phase, 3-D Surface Plot, Spectrogram
  • Data Views: Popup window of underlying data values.
  • Spectral Overlays: Up to 6 simultaneous overlay traces, unlimited save and retrieve from hard disk
  • Composite overlay: average of any selected overlays or the difference between any two overlays.
  • Video Zoom: Arbitrary Zoom In to any portion of overall frequency or time span
  • Auto Scaling
  • Cursor Measurements: Absolute, Differential (Ctrl key), Harmonic cursors (Shift key), Sideband cursors (Ctrl + Shift key)
  • Right Click Action Menus: Various Cross display functions, Inverse FFT, Cepstrum, Smooth Spectrum, Expand and other Edit functions
  • FFT Sizes, 32, through 1,048,576 pts (in powers of two increments)
  • Overlap Processing: Up to 99% of FFT size in Post Processing mode
  • Smoothing Windows: Bartlett, Blackman, Flat Top, Hamming, Hanning, Kaiser, Parzen, Triangular, Uniform, Force, Exponential, Gaussian
  • Averaging Modes: 1) Free Run with selectable block size. 2) Sound Level Meter mode (Off/Fast/Medium/Slow/Forever)
  • Averaging Types: Exponential, Linear or Vector moving average
  • Peak Hold: live peak hold with selectable timeout
  • Composite Channel operations: Average, Cross Spectrum, Real and Complex Transfer Functions, Coherence
  • Amplitude Axis Scaling: Linear, Logarithmic or Log Magnitude.  Power Spectral Density (PSD) option
  • Frequency Axis Scaling: Narrowband Linear, Narrowband Logarithmic, 1/1, 1/3, 1/6, 1/9, 1/12, 1/24, 1/48 or 1/96 Octave
  • Spectral Weighting: Flat, A, B, C ANSI weighting curves
    Transducer Compensation: Independent compensation for each channel
  • Markers: Up to 8 user defined markers with user customizable labels
  • Calibrated Inputs (Volts, Millivolts)
  • Calibrate directly by specifying transducer sensitivity (mic, hydrophone, accelerometer, force) or calibrate to an external reference source.
  • Amplitude Calibration: V, mV, dBV, dBmV, dBu, SPL or PA (in air or water),
  • psi, or custom units
  • Vibration Measurements: Acceleration (G), Velocity (ft/sec, in/sec, mils/sec, mm/sec), Displacement (ft, in, mils, mm)
    Independent Calibration and Scaling: each channel can be scaled and calibrated independently
  • Signal Generator: Pink Noise, White Noise, Tone Burst, Noise Burst, 1 kHz Tone, Multiple Tones, Frequency Sweep, Frequency Step, Level Sweep, IMD test tones, Pulse, Sawtooth, Triangular, Squarewave, User Defined (from .WAV source). DTMF, Digital Zero
  • Utility Measurements: Peak Frequency, Peak Amplitude, Total Power
  • Distortion Measurements: THD, THD+N, SNR, IMD
  • THD+N versus Frequency utility – quickly and conveniently measure the distortion characteristics of a device over a range of frequencies.  Results are shown on a semilog/log plot and can be saved/loaded from disk or printed.
  • Acoustic Tools: Reverberation Time (RT-60), Equivalent Noise Level (Leq, LeqT, Lsel, Lpk, Lmax, Lmin, L10, L50, L90
  • Automation Tools: COM based Application Programming Interface (API).  Data Logging – output text file (per channel) containing selected spectral parameters + time-stamp.
  • Import/Export: .WAV, ASCII, and Binary file formats
  • Configuration Files: Store and recall common analyzer test setups from disk. Quick load from toolbar
  • Color Printing: All displays plus annotation, comments, and margin control
  • Clipboard support: WAV segments, tabular data and bitmap images


DT9837A from 4 to 16 channels

Spectraplus DT