Bird Technologies BDS-Manual - Manual (Page 58)

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Data Outputs
Tabular Display
Graphical Display
Parameter Definition Symbol Unit
Frequency Fundamentals (F
o
),Harmonics (F
1
, F
1
…F
15
), and IMD F
n
Hz
Voltage RMS voltage V
rms
Volts
Current RMS current I
rms
Amps
Impedance Magnitude of Impedance, Z Ohms
Phase Angle Phase between V and I
n
Degrees
Power Average Power cosine ( ) P Watts
Relative Power Harmonic power relative to the fundamental power dBc Decibels
Relative Phase Phase between harmonic and F
0
.
n
Degrees
Parameter Definition Symbol Unit
Voltage Waveform Voltage waveform versus time, V(t) vs. t V(t) Volts
Current Waveform Current waveform versus time, I(t) vs. t I(t) Amps
Impedance Waveform Impedance waveform versus time, vs. t Z(t) Ohms
Power Waveform Power waveform versus time, P(t) vs. t P(t) Watts
Voltage Magnitude Plot Voltage magnitude of a selected frequency vs. t V(f) Volts
Current Magnitude Plot Current magnitude of a selected frequency vs. t I(f) Amps
Impedance Plot Impedance magnitude of selected frequency vs. t Z(f) Ohms
RMS Power Plot RMS power of a selected frequency vs. t. P(f) Watts
Phase Angle Plot Phase angle between V and I of selected frequency vs. t ?(f) Degrees
Power Spectral Density Relative power versus frequency dBr Decibels
V I ⁄
θ
V
rms
I
rms
× ( ) y x b + ( ) acos =
θ
Z