FFT Plot Settings |
Channel Name | Displays the name of each channel added to the job. |
Window Type | The window type applied to channel data.
- None: No window. Use when signal content contains random noise (white noise) or closely spaced sine waves.
- Hann: Bell-shaped cosine window typically used to analyze continuous signals. Use when signal content contains sine waves, a combination of sine waves, vibration data consisting of narrowband random signals, or unknown content.
- Hamming: Bell-shaped cosine window optimized to minimize the maximum (nearest) side lobe. Use when signal content consists of closely spaced sine waves.
- Blackman-Harris: Similar to the Hann window, this window has a slightly wider main lobe but much better dynamic range. It is optimized to provide the minimum side lobe level.
- Blackman: Similar to the Hann and Hamming windows, this window has slightly wider central lobes and less sideband leakage.
- Flat top: Optimized for measuring peak amplitudes of discrete spectral components that are separated by several spectral lines. Use when signal content consists of sine waves and amplitude accuracy is important.
|
Integration | The integration type applied to acceleration sensor data. Applies only to acceleration data, and defaults to None for other sensor types.
- None: No integration; acceleration data is represented as acceleration.
- Single: Data is integrated once; acceleration data is represented as velocity. When custom units are defined, this value defaults to None.
- Double: Data is integrated twice; acceleration data is represented as displacement.
|
Show Peak | When enabled (default), the highest value of the plot displays with a circle at the peak. The circle does not display when this option is disabled. |
Spectrum Type | The spectrum type used to scale data.
- Logarithmic: Measures the spectrum and plots the data as dB relative to full-scale.
- Power: Measures the spectrum and plots the data in terms of power.
- Amplitude Peak: Measures the spectrum and plots the data in terms of peak amplitude.
- Amplitude RMS: Measures the spectrum and plots the data in terms of root-mean-square (RMS).
|
| The X- and Y-axes ranges update with the selected spectrum. User-entered range values can also be applied. |