Modal shakers are used in modal testing to excite a structure under test to measure its dynamic characteristics. It is designed specifically for modal analysis and helps identify the modal parameters of the structure, such as natural frequency, damping, and mode shape.

Modal testing involves exciting the structure with a known input and measuring the response at various points to identify its natural frequencies, damping ratios, and mode shapes.

Both modal shakers and impulse hammers can be used in modal testing to excite the structures, but modal shakers have some advantages against impulse hammers such as cleaner and more accurate measurement data, the ability to test inaccessible points, and the capability to distinguish highly coupled modes. Modal shaker testing is also preferred for less noisy and more accurate results in many industrial applications.

DynaLabs small modal shakers such as 20N and 100N have required amplifier inside the shaker body so it is extremely easy to use and handy. Also with the help of the integrated signal generator, it is very easy to try the test setups of perform easy tasks. 

Amplifiers are available for all models. External amplifiers are optional for the 250N and 440N models, while the 20N and 100N  models come with integrated amplifiers. Blower and stinger set are included with the shaker set.