Kirchner

The USB soundcard is to use, when there is a problem with the onboard soundcard.
For Windows 98/2000/XP it is used as a MIC input.
For the generator function Windows 2000 SP3/XP is necessary.
The MIC amplifier +20dB is only for SPL measurements.

The acceleration sensor is used to measure vibrations on speaker casings, car body’s or machine parts. An acceleration measures the actual substance vibrations only and not the air sound waves. During the measurement the vibrations are transmitted to the sensor casing. In the casing there is an elektret foil, whose mass works against that of the casing. Thus creating a voltage that relates to the casing vibration.

The sensors are not gauged, the shown amplitudes are not defined values. The measurable frequency range is 30Hz – 3KHz. The sensor shows the frequency of the vibration and by comparing you can suppress the vibrations by choice.

The sensor is fixed to the measurement object with two-sided sticky tape.

The sensor is connected to the microphone input of the soundcard. Here the sensitivity has to be increased by turning on the Mic- boost or microphone amplifier in the system control.

The test-adapter is for the ATB PC DEMO program. It is connected from the soundcard LINE out to the MIC input for the system-correction

The multimedia microphone is for the measurement with the ATB PC DEMO program.
The frequency range is from 20Hz – 3kHz.