... collectionHigh-performace processor ARM9 with 400MHz dominant frequency, Modular design, Optimized operation procedure, Greatly ... , Velocity Pickups, Displacement Probes, photoelectricity speed sensorSignal range±40VSignal typeAcceleration, Speed, Shifting, VoltageFrequency RangeDC~40kHz, ... impact response testingMeasuring natural frequencyRun up/down testing analysisUse equal time interval and equal ...