Complete Vibration Test Systems SignalForce Vibration Test Systems (both air- and water-cooled) provide dynamics testing solutions including: shaker tables, power amplifiers, slip tables, shaker head expanders & fixtures for environmental test, environmental stress screening, modal excitation and AGREE testers. Electrodynamic Shakers Data Physics provides a broad range of electrodynamic shaker systems for use with SignalStar Vibration Controllers.