The Modal Shop, a PCB Group Company, provides structural vibration and acoustic sensing systems to engineers worldwide. The Modal Shop assures you continued development of high-quality products combined with unparalleled customer support of the PCB Group.

Modal Shaker

Model 2100E11 440 N Modal Shaker

When performing experimental modal analysis, the choice of excitation function and system can make the difference between a good measurement and a poor one. For many modal test applications, an electrodynamic shaker system is best suited for creating an appropriate input forcing function. Distributing adequate input force energy across the test structure and obtaining accurate and reliable input force measurements is critical for successful modal testing. This often requires a shaker that is highly portable, rugged and easy to setup in order to facilitate the best exciter location (relative to the test structure) while minimizing any unwanted interaction between the exciter and test structure.

The Modal Shop 2100E11, a lightweight electrodynamic modal shaker, is capable of providing 440 N of peak force excitation in a small footprint weighing just 15 kg. With a 1” stroke and frequency range up to 3000 Hz, the 2100E11 is suitable for structural testing and experimental modal analysis applications, including single and multiple inputs (SIMO and MIMO) using random, burst random, sine dwell or chirp excitation signals.

Forced air cooling sufficient to meet full shaker performance (440 N pk) specifications.



LaserTach™ - Laser Tachometer

The LaserTach™ ICP™ tachometer senses the speed of rotating equipment and outputs an analog voltage signal for referencing vibration signals to shaft speed. The sensor allows for measurements in excess of 30,000 RPM from distances as far as 20 inches (51 cm). A status LED provides positive, visual indication of proper signal pickup. The standard BNC jack connects the sensor to any constant current, IEPE conditioned data acquisition systems and signal conditioners. Unlike magnetic tachometer pickups, the LaserTach does not require the rotating equipment to be a ferrous material - only a visually contrasting section of the shaft needs to be available. This is typically accomplished with a small piece of reflective or retro-reflective tape.


The unit powers from standard ICP sensor signal conditioning, requiring only a single coaxial or twisted pair cable connection – like your ICP accelerometers! No additional or specialized power source is needed. This facilitates deployment of multiple speed sensors using the same cabling and signal conditioning as your other ICP sensor arrays.