UK Supplier of Data Acquisition & Thermal Imaging systems, software and services

WCAmini AD3661 FFT Analyzer

Category: Vibration Analysis
Manufacturer: A&D

The WCAmini from A&D is a portable 4 channel noise and vibration analysis system.

  • Powered by USB (No AC adapter required)
  • 24-bit, 4 channel measurement (TEDS compatible)
  • A synchronous tachometer input
  • Integral signal generator
  • FFT analysis and throughput recording and playback analysis
  • Order tracking analysis (Optional)
  • Filtering function (Optional)
  • Voice memo input and sound playback
  • Includes WCA Lite (Optional easy-to-use analysis software)
  • WCAPRO (Multi-analysis and measurement software)


  • A portable and lightweight, USB bus powered unit - The WCAmini is small and light enough to fit into your travel case. Power can be supplied from the USB bus, allowing you to perform noise and vibration analyses anywhere.
  • User-friendly GUI and WCA Lite with improved ease of operation - With enhanced operability, the WCAmini has adopted the same design concept employed in the highly reputed WCA. WCA Lite will enable simple operation of FFT and tracking analyses.
  • Complete compatibility with the CompactWCA/WCAonPC (AD3600 Series) - A compatible user interface eliminates the need for additional training of existing users. In addition, data analysed in the past can still be utilized as data remains fully compatible because of the same MFU file format.

WCAPRO, multi-analysis software

WCAPRO has an easy-to-manage user interface that can be operated as a Windows application. WCAPRO provides real-time FFT analysis for noise and vibration testing. Optional licenses for integration real-time octave analysis and tracking analysis are also available. The system comes standard with a throughput collection function that allows continuous recording of time history data on a disk and repeated playback analysis. Off-line playback with a standalone PC is also possible (Optional).



Number of Input Channels4
Frame Size64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384, 32768, 65536
Frequency Range40kHz - maximum
Real-Time Analysis Frequency20kHz
A/D Converter24 bits
Dynamic Range100dB
Analytical FunctionsTime Function, Time Averaging Function, Spectrum, Auto-Power Spectrum, Complex Spectrum, Energy Spectrum Density Function, Power Spectrum Density Function, Cross Spectrum, Phase Spectrum, Transfer Function (H1, H2, H3, HV), Coherence Function, 1/1; 1/3; 1/6; 1/12 Octave
Display Functions 
Plot WindowMax. 16 window simultaneous display
OverlayingMax 8 trace (2D display)
Format2D display (Amplitude, Bode diagram, Nyquist diagram, Orbit)
3D display (Spectrum map, Campbell diagram, Colour Spectrum)
Block Arithmetic Functions
Block Arithmetic Functions+, -, *, /, Complex conjugate number, Discrete Fourier transform, Fast Fourier transform, Inverse discrete Fourier transform, Inverse fast Fourier transform, Time-domain differentiation/integration, Frequency-domain differentiation/integration, Hilbert, Inverse Hilbert, Exponent, Logarithm, Natural Logarithm, Amplitude, Phase, Square Root, Trigonometric Logarithm, Envelope, Averaging, Acoustic weighting, Smoothing, Interpolation, 1/1 ; 1/3 ; 1/6 ; 1/12 octave
Throughput Functions
Throughput FunctionsTime history data recording and playback and analysis (downsampling during playback is possible)
Signal Generator
Number of Outputs1
WaveformsSine wave, Pure random, Band random
WaveformBurst Control, Lump Control, Sweep Control
Order Tracking (Optional)
ProcessingConstant ratio RPM tracking, Constant band RPM tracking, Order tracking analysis band width (frequency/order), Octave band tracking (1/1 ; 1/3 octave), Phase tracking, Cross spectrum, Transfer function, Spectrum map, Campbell diagram, Colour spectrogram
Max Analysis Order1600
Analysis Order Range6.25, 12.5, 25, 50, 100, 200, 400, 800, 1600
Real-time Octave Analysis (Optional)
Analysis Function1/1, 1/3, 1/6, 1/12 octave
Filter MethodDigital Filter

1/1 oct (ANSI S1.11, JIS C1513 Type II)
1/3 oct (ANSI S1.11, JIS C1513 Type II)

AveragingNo averaging, Linear, Exponential, Peak
Time Weighting0.001 to 1000 seconds
Filtering (Optional)
Arbitrary Frequency FilterLowpass, Highpass, Bandpass or Bandreject
Order FilterBandpass or Bandreject
External Dimensions30(H) x 139(W) x 138(D)  (unit: mm, excluding protuberances)
Power SupplyUSB bus power, AC adaptor
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