View Parameters for Auto Correlation Function Display

These view parameters determine how the collected data are analyzed and displayed.

Time Delay Range (dT)

This parameter is applicable to Auto or Cross Correlation Function Display. 21 options are available. They are ± 100 µs, ± 200 µs, ± 500 µs, ± 1 ms, ± 2 ms, ± 5 ms, ± 10 ms, ± 20 ms, ± 50 ms, ± 100 ms, ± 200 ms, ± 500 ms, ± 1 s, ± 2 s, ± 5 s, ± 10 s, ± 20 s, ± 50 s, ± 100 s, ± 200 s, ± 500 s.

Auto correlation and cross correlation function is calculated using FFT in order to achieve fast speed. The computable range for the Time Delay for a frame of data is thus ± 0.5 × [FFT size]/[Sampling Frequency]. Initially, the software will selected a Time Delay Range such that it is able to accommodate the range determined by the above formula. You can subsequently change the Time Delay Range if necessary.

Time Delay Multiplier

Same as Amplitude Spectrum display.

Channel A Display Range

Only two options available: Off, ± 1.

When "Off" is selected, the data in Channel A will not be displayed.

Channel A Multiplier

Same as Amplitude Spectrum display.

Channel B Display Range

Only two options available: Off, ± 1.

When "Off" is selected, the data in Channel B will not be displayed.

Channel B Multiplier

Same as Amplitude Spectrum display.

FFT Size

Same as Amplitude Spectrum display.

Window Function

Disabled.

Window Overlap Percentage

Disabled.