Rohde & Schwarz RTE - Page 969

Power analysis (option R&S RTE-K31)
R&S
®
RTE
969User Manual 1326.1032.02 ─ 20
Figure 16-1: Power diagram for sinusoidal signals
P = real power [W]
Q = reactive power [VAR]
S = complex power [VA]
φ
= phase angle between the current and the voltage sine waves [°]
The power results are defined as follows:
Result Unit Formula Description
Power factor, P
Factor
- P
Factor
= |P| / |S| Measure of the system effi-
ciency. The value varies
between -1 and 1.
Phase, φ ° φ = acos (P
Factor
) Phase angle between the cur-
rent and the voltage sine
waves.
Real power, P W P = V
INSTANTENEOUS
∙ I
INSTANTENEOUS
(averaged over N cycles)
Energy of the system that can
be used to do work.
Reactive power, Q VAR
(Volt‑Ampere
reactive)
Q = |S| sin φ Power flow that is temporally
stored in a system because of
the inductive and capacitive
elements.
Apparent power, |S| VA |S| = V
RMS
∙ I
RMS
(averaged over N cycles)
|S| is the magnitude of the
vector sum of real and reac-
tive power (the complex
power S).
The following remote commands are used for handling the measurement results:
●
POWer:QUALity:RESult:CURRent:CREStfactor? on page 1952
●
POWer:QUALity:RESult:CURRent:FREQuency? on page 1952
●
POWer:QUALity:RESult:CURRent:PEAK? on page 1952
●
POWer:QUALity:RESult:CURRent:RMS? on page 1952
●
POWer:QUALity:RESult:POWer:APParent? on page 1952
●
POWer:QUALity:RESult:POWer:PFACtor? on page 1952
Input