Cleverscope CS300 - Signal Information Display - Spectrum Functions (Spectrum Source); Signal Information Display - Spectrum FRA Functions (Spectrum Source)

v2.13 Cleverscope CS300 Reference Manual
©Cleverscope 2004-2018 www.cleverscope.com Page 85
13.5 Signal Information Display – Spectrum Functions (Spectrum source)
DC
RMS
Fsignal
Vsignal.
F1.
V1
F2.
V2.
F3
V3
SINAD.
THD.
HD2+3.
Calculated by taking the mean amplitude value of the signal data (either full frame or
between tracking markers).
It represents the DC offset of the signal data for which it was calculated.
(Root Mean Square) calculated by squaring the value of each sample, taking the mean
value of these squares; and then taking the square root of this mean value.
As for all functions the calculation is either done for the entire frame or between the
tracer markers.
Frequency of the signal estimated to be the largest frequency component.
Amplitude of the signal estimated to be the largest frequency component.
Frequency of the fundamental signal.
Amplitude of the fundamental signal.
Frequency of the 2
nd
harmonic of the fundamental signal.
Amplitude of the 2
nd
harmonic of the fundamental signal.
Frequency of the 3
rd
harmonic of the fundamental signal.
Amplitude of the 3
rd
harmonic of the fundamental signal.
Signal in Noise and Distortion. It is the ratio of signal plus noise plus distortion and noise
plus distortion.
Total Harmonic Distortion - the ratio of the sum of the powers of all harmonic
components to the power of the fundamental frequency.
Is the ratio RMS sum of the 2
nd
and 3
rd
harmonic referred to the fundamental amplitude.
13.6 Signal Information Display – Spectrum FRA Functions (Spectrum source)
This display is applicable only if the FRA system is on, and Impedance is being displayed.
|Z| at F
Phase at F
|Z| max
|Z| min
Phase max
Phase min
Zmax at 0°
Displays (and logs) the impedance at a user specified Frequency
Displays (and logs) the Phase at a user specified Frequency
The maximum impedance in the frequency range, and the frequency at which it occurs.
The minimum impedance in the frequency range, and the frequency at which it occurs.
The maximum phase in the frequency range, and the frequency at which it occurs.
The minimum phase in the frequency range, and the frequency at which it occurs.
The maximum impedance at 0° phase, and the frequency at which it occurs.