PROCEDUREv2.10
UTIL PROMPT/R
/R
/R
/R
        This procedure will display a number of stored tests made/R
        with the waveform and spectrum analysis capability of System/R
        One's DSP module.  Each test graph will pause for you to/R
        examine it.  Your may use graphic cursors for detailed/R
        examination by touching either horizontal arrow key or the/R
        <Home> or <End> keys after a graph is displayed.  The arrow/R
        keys move the cursor by one data point.  <Ctrl>arrow moves/R
        5 data points, and <Shift>arrow moves 25 data points.  Press/R
        <Enter> after examining each screen to move to the next screen./E
LOAD TEST SQUARWAV/R
/F7/F10/E
LOAD TEST SQUARFFT/R
/F7/F10/E
LOAD TEST SMPTEWAV/R
/F7/F10/E
LOAD TEST SMPTEFFT/R
/F7/F10/E
UTIL PROMPT/R
/R
/R
        The following graph is an FFT spectrum analysis of the residual/R
        distortion of System One's analog generator and analyzer at 1 kHz./R
        Note the fundamental frequency at 1 kHz, attenuated 129 dB by the/R
        analyzer's notch filter.  2nd through 8th harmonics are visible/R
        at amplitudes from -124 dB to -146 dB below the unattenuated/R
        fundamental./R
/R
        Press <Enter> to obtain the graph./E          
LOAD TEST RESIDUAL/R
/F7/F10/E
UTIL PROMPT/R
/R
/R
/R
        The following graph is a "dual trace" FFT spectrum analysis of/R
        white noise (upper trace) and pink noise (lower trace) from/R
        System One's BUR-GEN option.  Note that the white noise, as/R
        analyzed with the FFT which in effect has constant bandwidth,/R
        appears flat across the spectrum.  The pink noise appears to/R
        have a -3 dB per octave fall-off with frequency when analyzed/R
        with a constant bandwidth spectrum analyzer./R
/R
        Press <Enter> to obtain the noise spectral display./E
LOAD TEST NOISEFFT/R
/F7/F10/E
UTIL PROMPT/R
/R
/R
/R
        The following graph is a "dual trace" FFT spectrum analysis of/R
        a Compact Disc player while playing dithered and non-dithered/R
        low amplitude tracks of the CBS test disc.  The upper trace,/R
        calibrated by the left-hand vertical scale, was taken while playing/R
        the -90.31 dB dithered 1 kHz signal.  The lower trace, calibrated/R
        by the right-hand vertical scale, was taken from the -90.31 dB/R
        undithered signal.  Note the large number and higher amplitude of/R
        distortion products (especially at 5th harmonic and above) from/R
        the undithered signal and the higher noise level with the dithered/R
        signal./R
/R
        Press <Enter> to obtain the display./E
LOAD TEST CDDITHER/R
/F7/F10/E
RUN EXIT
UTIL END