ONOSOKKI DS-2000 series Operation Manual page 5

② Drive current indicates that a current of 2.4mA is sent to the sensor.
In the documents supplied with the "GK-3100" impulse hammer, necessary data are
described as follows:
To make the vibration force constant, it is necessary to hammer an object under
measurement using the weight of the hammer itself instead of the force of arm or hand.
Therefore, it is recommended to attach an extender at the rear end of the hammer.
Here, make sure that the voltage output per 1N (newton) is 2.38mV/N.
The frequency of the excitation force by the impulse hammer can be roughly adjusted
by changing the material of the tip at the end of the hammer.
□HARD TIP (metal)
Enables steep impulse rise and vibration up to high frequencies. However, there is a risk
of double-hammering (hammering twice), and the power spectral density is low.
□SOFT TIP (vinyl)
The power spectral density is high, and the vibration energy is concentrated in low regions.
However, vibration with several Hertz or less is difficult.
□MEDIUM TIP (plastic)
Provides intermediate characteristics between a metal tip and a vinyl tip.
The hammer is provided with an
extender (weight for weight
付いている。
adjustment).
Presence or absence of an extender attached to the rear end of the
impulse hammer, with different voltage outputs per 1N (newton).
About tip at the end of hammer
Plastic and vinyl
tips are used.
4