ODS is a process of diagnosing rotating machinery, it may become unavoidable to do some structural vibration analysis as well. Most often this is done by performing ODS (Operating Deflection Shape Analysis) or Modal Analysis. An operating deflection shape shows the deformation of a structure at a specific frequency or during a time waveform playback. ODS shows the response of a structure to both resonant and forced vibration, and is generally very representative of the real world data. Once the model is complete, test data is collected at various points on the assembly using a dual channel analyzer. One probe (or an optical/laser tachometer) remains in place at all times while the other probe is moved from point to point. During the data collection process, care must be taken to ensure all data is collected on the right point and in the right direction. After all data has been collected, the software merges the data with the model and the resulting animation shows how the item moves. Animations can show abnormal movement caused by looseness, weak and flexible structures, resonance, vane pass, excessive forces, operating loads and more. Animations will also show how components move with respect to each other, such as with misalignment. They also show how components move with respect to the structure to which they are attached (soft-foot, looseness, etc.).