The DI-811, Transducer Test Set (TTS), is a portable, self contained shaker system which can be used to verify a transducer’s calibration or as a test stimulus for a vibration analysis system. Suitable for use in both laboratory or field environments, the DI-811 operates from both AC or internal battery power. The DI-811 supports calibration verification of a variety of transducers including; single and tri-axial accelerometers, velocity transducers and displacement probes. The TTS can also provide calibrated acceleration, velocity or displacement inputs, at user selected frequencies and amplitudes. These test stimulants are useful when verifying the proper operation of vibration analysis equipment, fixed monitoring systems or to test for potential cross talk or wiring errors in a multi-channel vibration data acquisition system.