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FFT Analyser

Instrument Details

FFT Analyser

Make : OROS, France
Model : OR38
Specification : 32 Channel Analyser, Recorder,
    Conditioner Up to 40 kHz & 25.6 kHz bandwidth

OROS OR38 is a synthesis of component usually used separately for measurements : analyser, recorder, conditioners in a single portable instrument. It offers the capability of an advance laboratory instrument in a modular, rugged and portable package.

Working Principles

There are different techniques for measurement of vibration frequency and its analysis but OR38.

FFT Analyser


Noise and Vibration of Bridges, Dynamic response prediction of bridges, damage detection of civil structures,  Sound and Vibration applications along with FFT Analysis, Modal analysis, Octave Analysis, Data Acquisition and real time analysis.

User Instructions

  1. Frequency limitations:   The main limit of the frequency and bandwidth of FFT spectrum analyzers is the analogue to digital converter, ADC that is used to convert the analogue signal into a digital format. While technology is improving this component still places a major limitation on the upper frequency limits or the bandwidth if a down-conversion stage is used
  2. UPS and Miscellaneous: At least a 1 kVA UPS is required for running the equipment and other power tools.

Contact Details

CSIR-Central Road Research Institute,
Delhi-Mathura Road, New Delhi-110025
Phone: +91-11-26848917 (Director), 26312412 (COA office), 26832173 (Reception)
Fax: +91-11-26845943
Email: director [dot] crri [at] nic [dot] in

Instrument Usage Charges(Including GST)

Inspection and Testing Charges: Rs./- per unit : 20.42 Lac in July 2006
The Demand Draft should be payable in favour of“The Director, CSIR-Central Road Research Institute, New Delhi”
Letter, DD & Samples send to “HOD-BES, CSIR-Central Road Research Institute, New Delhi