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Modal testing can be performed with modal hammers or shakers. If high frequency excitation content or signal controlled testing is desired, then modal shakers are the only excitation solution. Dynalabs modal shakers are lightweight and powerful modal shakers which can go up to 15,000 Hz and provide force levels up to 440N with a maximum 25mm stroke.
Advantages:
Modal stinger can be easily adjusted by the through-hole armature
Lightweight, durable, portable and easy to use
Adjustable trunnion base provides high flexibility
Up to 25mm stroke and broad frequency range
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MS-20
Modal Shaker, 20 N Integr. Sine-Generator, Display and Amplifier
No test specimen is mounted on Modal Shakers. Modal shakers are mounted to the structure with stinger and force is transferred from the shaker to the structure via this stinger. Stinger prevents interaction between structure and shaker.
Stinger is essentially a thin, flexible rod that improves the accuracy of modal testing by transmitting force in the axial direction to the force sensor or impedance head. Thanks to its lateral flexibility, it also protects both the DUT and the modal shaker from critical forces.
All modal shaker packages include one stinger set. In this set, there are 2mm, 2.4mm, 3.2mm long stinger rods, collets and nuts.
Linear power amplifier designed for vibration testing systems
Better performance for lower frequencies, less distorted and less noisy output.
Max. Output Power: 500VA on 4 OHM
Operation Voltage: 220V AC (Optional 110V AC / 220V AC)
Output: current mode or voltage mode
Settable current limiter to protect important and expensive products under test
Output phase settable (0° or 180°)
Frequency Range V-Mode:: DC… 60 kHz; 60 kHz… 200 kHz small signal (-20 dB)
Frequency Range I-Mode @ 4 Ohm resistive load: DC… 50 kHz; 50 kHz… 80 kHz small signal (-20dB)
Monitor outputs for curent and voltage. No internal Sine-Generator.
Max. Output Power: 400VA
Integrated sine generator (0..15 kHz) or external input.
Adjustable gain
Frequency response variance: 20 Hz-20 kHz:±2dB
Operation Voltage: 110V AC to 220V AC
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