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.

Spectrum viewers display the frequency domain representation of an acquisition measurement. Move the cursor along a trend curve to update this viewer with the spectrum measurement at different times.

What do you want to do?

Task Action
Compare measurements from different sources or times. Create a data event reference.

Related link: Comparing Measurements from Different Sources or Times
Change the x-axis frequency units to Hz, CPM, or orders. Click Unit and select the units you want.
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.
Scale data according to RMS, peak, or peak-to-peak values. Expand the navigation menu and select Options. Click Units and Scaling under Data Viewer, and then configure the options under Spectrum Scaling so the data automatically scales.
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.
Determine if a peak in the spectrum is synchronous with the running speed of the equipment. Click Cursor on the viewer toolbar and select Harmonic.

Related link: Adding Harmonics and Sidebands to Viewers
Override the nominal speed set for an asset to use a speed value based on the data in the Spectrum viewer instead. Load data for an asset in the Spectrum viewer. Double-click a point in the viewer and use the <Left-arrow> and <Right-arrow> keys or Find Peak to find the point with the speed value you want the asset to use. Click Select Speed .
Note  Orders and fault frequencies update automatically based on the new speed you select.
Apply single or double integration or differentiation to data. Click Integration on the viewer toolbar and select an option from the resulting dialog box.

Related link: Integrating and Differentiating Data
Use logarithmic scaling for the y-axis. Click Set Scale on the viewer toolbar. In the Set Scale dialog box, enable Logarithmic Y axis.
View multiple spectra in a waterfall graph. Use the Waterfall viewer to display multiple spectra from a sensor. You can insert a Waterfall viewer into a new or existing workspace area.

Related link: Waterfall Viewer
View the full spectrum data of a spectrum. Use the Full Spectrum viewer that displays the full spectrum of an orbit. You can insert a Full-Spectrum viewer into a new or existing workspace area.

Related link: Full Spectrum Viewer
See a table of trend values for features of selected assets. Click Show Features on the viewer toolbar.
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.

Related Information

Adding, Changing, and Removing Viewers

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