User`s manual

Table Of Contents
DIN
Measures Intermodulation distortion using DIN standard. Two tones are
generated in a 4:1 ratio at 250Hz and 8000Hz. Intermodulation components up
to the 5
th
order are considered for distortion.
CCIF
Measures Intermodulation distortion using two equal level near spaced (1kHz) in
Frequency tones. Difference Intermodulation components up to the 2
th
order are
considered for distortion. To keep results directly comparable with THD analysis
both output Voltage or Power are single tone equivalent scaled. Considering a
power amplifier clipping point, this usually due to the peak value of the signal
rather then it RMS value. With two tone of equal level the RMS values is 3dB
lower than the same peak to peak single tone.
Freq
Has no effect in SMPTE and DIN analysis which use fixed frequencies. Set the
measurement frequency for Linearity and THD. Set the center Frequency for
CCIF; for example 15500Hz means two tone are generated, spaced by 1kHz, at
15000Hz and 16000Hz
200 14 LINEARITY & DISTORTION