7. MEASUREMENT SIGNAL7.1 SETTINGBefore carrying out a test the measurement signal must be adjusted.Signal:BMH BassMidHigh, full range noise for SPL and Impedance measurementIt is the M-PN signal. It is equal to the PCM signalB Bass, bass noise for woofer testingMH MidHigh, noise for testing tweeterRB low Rub&Buss signal for testing woofer, frequencies 180Hz, 234HzRB mid Rub&Buss signal for testing mid-speaker, frequencies 500Hz, 650HzRB high Rub&Buss signal for testing tweeter, frequencies 1,5kHz, 1,95kHzSin Sine wave for THD measurement.1/2Sin positive impulse for testing the polarity in the QC measurementFor the measurement with extern signal there are following signals:There are two signals on the CD and two signals on the DVD available for measurementpurposes.Signal:CD-Plus full range noise for SPL and impedance measurement.CD-Normal full range noise for fast SPL measurementDVD-PCM full range noise from the DVD. It is like the BMH signalDVD-DD Dolby Digital signal from the DVDThe signals DC-Plus and CD-Normal can not be found on the DVD.30
