Single Sine Correlation offers accurate measurement of gain and phase in a system throughout the frequency spectrum.

Measurement Technique

The basis of Frequency Response Analysis is to measure the Gain and Phase of a system or circuit at various fundamental frequencies. The system under test is stimulated with a test frequency, generated by the 402's signal generator. In practical systems, unwanted harmonic and wideband noise is usually introduced in addition to the fundamental. In some cases, this totally masks the required signal.

The analyser channels, by employing the Single Sine Correlation technique, offer unrivalled harmonic and wideband noise rejection in order to extract the required signal and accurately measure its amplitude and phase. This sequential, single frequency stimulus with narrow band analysis offered by the Beran 402 enables superior measurement accuracy and repeatability under harsh measurement conditions.

Alternative FFT techniques suffer significant limitations when used to measure dynamic systems, exhibiting non-linear behaviour, or in circumstances where poor signal to noise ratios prevail.

Multiple Displays

Incorporated as standard in the 402 are a multitude of display formats, allowing the user to optimise test result presentation.

All displays allow real-time display of test results, i.e. update occurs after completion of each individual result. Full user control of displayed data is provided, allowing zoom facilities, phase convention, auto or manual X and Y axis ranges and cursor point gain/phase text display.