modal testing

Identifying Structural Resonances is a Critical Part of Product Design. SignalCalc 900 Analyzers Provide a Variety of Ways to Identify the Modal Parameters of your Product

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Modal Testing

Modal analysis can be done both experimentally through frequency response testing or mathematically using finite element analysis. Complex structural motion is reduced to individual vibration modes.


  • Transfer Function Measurements
  • Zoom Analysis
  • Structural Geometry Information
  • Programmable sequence to tag points and directions
  • Preview Average Mode
  • Up to 51,200 frequency lines
  • Automatic or manual export to MEscope, UFF, Matlab, SDF, ASCII/CSV


  • Modal testing on aircraft, spacecraft, automotive structures
  • Modal analysis on machinery such as compressors, turbine blades, engine parts
  • Modal testing on sporting equipment – tennis rackets, bicycle frames, hockey sticks
  • Modal survey of bridges, buildings, floors
  • Validation of Finite Element Models
Modal Impact Hammer Test

Impact Hammer Testing

ICP and TEDS Hammer Support

Built in support for ICP and TEDS sensors or any voltage-output hammer

Preview Average

Preview each impact before adding it to the average

Rectangular, Force/Exponential Windows

Apply appropriate window function depending on the test setup

Auto Point/Direction increment

For tests which require multiple impacts, the software auto-increments points/directions for a streamlined acquisition experience

Shaker Modal Testing

Shaker Excitation

Large range of output signals (Random, Burst Random, chirp, etc) to drive shaker

Modal Shakers

Full range of modal shakers to use along with 900 Series Analyzers

Hanning/Rectangular Window

Apply appropriate window function for the excitation type

MIMO and Stepped Sine Analysis

Multi Output Multi Input Analysis (opt 71)

Analyze modal properties in complex structures by exciting with multiple shakers at different locations and directions simultaneously. Excitations from different source channels are uncorrelated ensuring highest quality transfer functions

Stepped Sine Analysis

Obtain test results by exciting a single frequency at a time.  Using closed loop control and a defined settling condition, Stepped Sine Analysis is useful for characterizing nonlinear or time-variant structures