powersys
Advanced Member level 1
power spectrum unit
A signal is attached to Channel-1 of an Agilent 35670A Dynamic Signal Analyzer. The unit of the signal measured by the analyzer is as follows:
Time Capture (time domain): Volt (V)
Linear Spectrum (frequency domain): Volt-RMS (Vrms)
Power Spectrum (frequency domain): Volt-RMS (Vrms)
However, some online articles, for example the following:
http://zone.ni.com/reference/en-XX/help/371361D-01/lvanls/power_spectrum/
http://www.onosokki.co.jp/English/hp_e/c_support/tech_term/tech_term5.htm
... show that for a voltage signal, the unit of the power spectrum of the signal is Volt-RMS squared (Vrms^2).
Which one is correct?
Thanks.
A signal is attached to Channel-1 of an Agilent 35670A Dynamic Signal Analyzer. The unit of the signal measured by the analyzer is as follows:
Time Capture (time domain): Volt (V)
Linear Spectrum (frequency domain): Volt-RMS (Vrms)
Power Spectrum (frequency domain): Volt-RMS (Vrms)
However, some online articles, for example the following:
http://zone.ni.com/reference/en-XX/help/371361D-01/lvanls/power_spectrum/
http://www.onosokki.co.jp/English/hp_e/c_support/tech_term/tech_term5.htm
... show that for a voltage signal, the unit of the power spectrum of the signal is Volt-RMS squared (Vrms^2).
Which one is correct?
Thanks.