由于我們將從試驗中得到的電機、電器、冰箱的振動輻射效率指數曲線以計權網絡的形式設置于測振儀之中，即可直接測定機器的聲功率級，（還可以對測量范圍內任何限值進行超標準值報警）。

VIB-4a PC vibration noise measuring instrument, using ISO/TR7849 recommended vibration method, in accordance with GB/T16539-1996 "acoustic velocity determination of a noise source power level measurement for the closure of the machine," the national standard for measuring instrument requirements, the application of advanced computer technology, successfully developed a set of vibration and noise measurement in one of the new type of measuring instruments.
The instrument when the measurement noise from background noise and environmental impact of reflection, there is no need to spend huge sums of money to build silencer chamber. Very suitable for use in motors, electrical appliances, refrigerators and other mechanical and electrical products, Vibration and Noise-line inspection.
VIB-4 computer using vibration and noise measuring instrument detection, measurement of staff when in use has the following salient features:
▲ VIB-4 computer vibration and noise measuring instrument using advanced computer technology to control all of the buttons by the microcontroller through the analog switch on the circuit, thereby greatly reducing the mechanical contact, thus avoiding the loosening of mechanical parts, poor contact, etc. problems and improve the instrument's own accuracy and reliability.
▲ Since we will be testing the motor, electrical appliances, refrigerators, radiation efficiency of the vibration of an exponential curve to take account of the right to form the network settings on the vibrometer among the machines can be directly measured sound power level, and (measuring range can also any limit to exceed the standard value of alarm).