Testing Information; Acoustic Test; Microphone Alignment For Measuring According To Iec 61672-1:2003; Electrical Test - SINUS Tango Plus User Manual

3 Testing information

3.1 Acoustic test

3.1.1 Microphone alignment for measuring according to IEC 61672-1:2003.

To measure the influence of mechanical vibrations you need a second sound level meter with officially verified
calibration as reference device. The microphone of the reference device has to be positioned in a maximum
distance of 0.2 m from the microphone of the tested device and must not be exposed to the mechanical
vibrations of the exciter.
Figure 3.1: Alignment for vibration test

3.2 Electrical test

For eletrical testing use the equivalent electrical impedance device K65 only (section 5) (manufacturer spec-
Ω
ifications: 22 pF 12% with a parallel resistance of 81 M 12%).

3.2.1 EMC test

The measurement is performed for the following configurations:
Low interference immunity: USB cable linked to public power supply and microphone extension cable
connected
Maximim interference immunity: USB cable and microphone extension cable disconnected

3.2.2 Level linearity

The starting values for the level linearity tests are listed in the last column of table 4.3.
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