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When you configure sensors, NI InsightCM provides 1x Magnitude Reference and 1x Phase Reference properties that specify the magnitude and phase values when the shaft is at slow-roll speed. The Data Viewer page uses these properties to compensate for slow-roll in Bode and Polar viewers. If the configured reference values are incorrect, or you want to temporarily override them with different values, you can compute and apply new slow-roll references within the Data Viewer page.
Complete the following steps to change the configured magnitude and phase references:
|Note In the Bode and Polar viewers, you must place the cursor at a point on the chart in order to enable Cursor Values.|
To restore the configured gap reference value, click Configured Values in the Set Gap Override.
To distinguish between data that indicates a physical imperfection in equipment, such as a scratch on a shaft, and pure vibration data, NI InsightCM applies waveform compensation for slow-roll data. When the Order Waveform or Order Spectrum viewer displays a dataset, InsightCM subtracts slow-roll data from that dataset.
Complete the following steps to enable slow-roll compensation: