Multiple-Input Multiple-Output (MIMO) Stepped Sine Testing

EDM Modal MIMO Stepped Sine Testing includes a dedicated test setup and operation process flow using multiple shakers outputting sine waves to acquire FRF signals. The Source Output type is Stepped sine tones. The step mode can be linear or logarithmic. The FRF signals of each measurement DOFs with respect to defined reference channels will be constructed. The output drive level can be defined to operate the test in an open loop, or the response of a control channels can be specified to operate the test in a closed loop.

MIMO Stepped Sine.png

The modal analysis process is seamlessly integrated with MIMO Sine Swept Sine testing.


  • Ease of use testing process

  • Point/direction auto/manual increment

  • Multiple sine excitation with sine tone (references)

  • Multiple number of sweeps

  • Different initial phase conditions for each sweep: +/- or random

  • Specify source output level profiles; or control the amplitude of input channels

  • Linear, Logarithmic sweep mode

  • Filter, RMS, Mean or Peak for measurement strategy

  • Fixed or proportional tracking filter, with user defined bandwidth

  • User defined Start/end frequency; Number of points; Delta F (or Points/Oct); Transition speed