Hioki MEMORY HiCORDER MR6000 Instruction Manual page 257

Cross power spectrum
The cross power spectrum finds a product of two input signal spectra. Common frequency
components to both two signals can also be obtained.
You can input a voltage waveform and current waveform to calculate power (active power, reactive
power, apparent power) of each frequency band.
Main uses:
To analyze common frequency components to two signals
See "Calculation types and internal calculation formulas" (p. 254).
Axis Display type
Horizontal axis Linear
(X-axis)
Logarithmic
Vertical axis Amplitude (linear)
(Y-axis)
Amplitude
in decibels
(logarithmic)
Real part (linear)
Imaginary (linear)
* (Eu: engineering unit) The level is calculated using a reference value in terms with an engineering unit
presently set.
(For example, when the unit is set to volts, 0 dB is equivalent to 1 V
Examples of waveforms
Indicates a frequency on a linear scale.
Indicates a frequency on a logarithm scale.
Indicates a square of an amplitude component of analyzed data on a
linear scale.
Indicates an amplitude component in decibels.
2
(Reference of 0 dB: 1 eu )*
Indicates a square of the real part of analysis data on a linear scale.
Indicates a square of the imaginary part of analyzed data on a linear
scale.
HIOKI MR6000A966-03
FFT Calculation Types
Description
2
.)
Normal display
Horizontal axis: logarithmic
Vertical axis: amplitude (linear)
Normal display
Horizontal axis: logarithmic
Vertical axis: amplitude (decibel)
Normal display
Horizontal axis: logarithmic
Vertical axis: real part (linear)
Normal display
Horizontal axis: logarithmic
Vertical axis: Imaginary (linear)
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