Hioki 8841 - RMS Spectrum [RMS]

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8.7 FFT Analysis Function
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8.7.3 RMS Spectrum [RMS]
Function
DC components: Ra = Fa
Ra = Fa
=|Ra|exp(jθa)
=|Ra|(cos∠θa + jsin ∠θa)
Horizontal
cursor
Vertical
cursor
Displays the frequency domain waveform of the input signal, including
magnitude (effective value) and phase information.
The LOG-MAG displays of RMS spectrum and Power spectrum express the
same processing result.
Major applications include:
・Determining the peaks of waveform frequency components.
・Determining the effective values of frequency components.
LIN-Hz Frequency spectrum display as linear units. The range is from
DC to the maximum frequency range value.
LOG-Hz Frequency spectrum display as logarithmic units. The range is
from between 1/400 and 1/4000 of value to the frequency
range value.
LIN-REAL Linear display of real-number part of the data as voltage
LIN-IMAG Linear display of imaginary-number part of the data as voltage
LIN-MAG Linear display of analysis data as voltage
LOG-MAG Logarithmic display of analysis data as dB (0dB reference
value: 1 Vrms)
PHASE Degrees (deg) display of phase component of data