Commtest VB2000-T FFT Vibration Analyzer

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Commtest VB2000-T FFT Vibration Analyzer
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Commtest VB2000-T
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Specifications Supplemental Document
Measure and Display Velocity, Acceleration and Displacement
Commtest VB2000-T Features
  • Powerful MAS Analysis Software
  • Programmable via a PC
  • Two channels, two accelerometers, simultaneous measuring
  • Single- or dual-plane balancing with printable reports
  • 8 MB expandable memory stores 8000-plus spectra
  • Access to fault frequencies on over 120,000 bearings
  • Tachometer for automatic capture of running speed
  • 3200 Line FFT capability
  • 20 kHz Fmax
  • 95 dB Dynamic Range
  • Built-in RS232 Interface for data exchange
  • Battery operated
Commtest VB2000-T Specs
Accelerometer Input
  • Number of channels: 2
  • Sensitivity: 100 mV/g nominal


Tachometer Input (Kit shown to the left)
  • Input type: Optically isolated, accepts TTL pulse
  • Sensor: Optical sensor with reflective tape, included
  • Optical sensor range: 20mm to 1m


Parameter Indication
  • Displays: Acceleration, velocity, displacement
  • Maximum Levels: ±80g (800m/s), ±4in/sec (100mm/s), ±400mil (10mm)
  • Dynamic signal range: 95 dB or greater (typical at 400-line resolution)
  • Harmonic distortion: Less than -70 dB typical
  • Display ranges: 60 dB or 120 dB visible range with manual shift
  • Units: g or m/s2, in/s or mm/s, mil or mm, adB, vdB
  • Graph types: Spectrum (frequency domain), waveform (time domain)
  • Magnitude display: Overall rms value, cursor-position value
  • Cursors: Standard, Dual & Harmonic
  • Frequency response: ±0.2 dB from 10 Hz to 5kHz; ±0.5 dB from 3 Hz to 20 kHz


Spectrum Parameters
  • Frequency scale: Hz, cpm
  • Y-axis: Acceleration, velocity or displacement