![]() The graph is quite unsteady at low frequencies, so that a correct reading of the amplitude response is difficult. Starting the analyzer and a measurementĪs soon as you click on the "Start Analyzer" button, the current measured value of the measurement microphone is displayed as a “red” curve. Any overdrive during the measurement leads to incorrect results and should therefore be avoided unconditionally.Ĥ. The sound pressure level is too high reduce the volume on the car radio or check whether the sensitivity of your measurement microphone is set correctly in the system control of your PC. In addition to the bar display, there is also a dB display at the top right – all values below -30 dB are too low for a correct measurement: If the bar only moves to the middle of the display and lights up orange, then the sound pressure level is too low Turn up the volume on the car radio or check the microphone sensitivity setting in the system control of your PC. In this case the sound pressure level is sufficiently high for a measurement. ![]() ![]() The RTA uses a coloured bar in the upper area to indicate whether the level of test signal is sufficient for the measurement or not.Īll dB values between -30 dB and 0 dB are shown as a green bar. Sufficient sound pressure level of the test signal is essential to achieve a proper measurement result.
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