Envelope Spectrum Viewer

NI InsightCM™ 3.3 Help

Edition Date: December 2018

Part Number: 374498G-01

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Parent Topic: Available Viewers

Supported Sensors: Vibration sensors that acquire waveform data, such as acceleration.

The Envelope Spectrum viewer displays the power spectrum of the envelope waveform data. Use this viewer with the Envelope Waveform viewer to detect ringing impulses, such as bearing defects.

What do you want to do?

Task Action
Enable harmonic or sideband cursors. Click the Cursor menu on the viewer toolbar and select the cursor you want.

Related link: Adding Harmonics and Sidebands to Viewers
Move the cursor to the nearest peak. Click Find Peak on the viewer toolbar to move the cursor to the nearest peak.
Note  The peak may not be a point represented on the graph because it may fall between two recorded points.
Change the x-axis frequency units to Hz, CPM, or orders. Click Unit and select the units you want.
Use logarithmic scaling for the y-axis. Click Set Scale on the viewer toolbar. In the Set Scale dialog box, enable Logarithmic Y axis.
Display fault frequencies. Click the Settings menu and select Fault Frequencies. In the resulting dialog box, select the fault frequency you want to display.
Select the source sensor. If you have more than one feature selected in the asset tree, you can select the source sensor for the viewer by clicking Choose Assets on the viewer toolbar.
Disable auto-scaling to manually set the scale for the viewer. Click Set Scale on the viewer toolbar. Uncheck Auto-scale and set the maximum and minimum values you want the viewer to use.

Related Information

Envelope Waveform Viewer

Stacking Charts in the Same Viewer

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