Fluke ScopeMeter 123B, User Manaul

Page: 146 / 192

123B/124B/125B
Users Manual
Table 7. Harmonics Current Measurements
hxv30.ep
Readout Description
Rms AAc Current AC value on channel A
THD %f
THD is the amount of harmonics in a signal as a percentage
of the total RMS value (THD%r) or as a percentage of the
fundamental (THD%f). It is a measure of the degree to which
a waveform deviates from a purely sinusoidal form. 0 %
indicates that there is no distortion. You can select THD%r or
THD%f in the Settings menu (
1
).
KF
K-Factor indicates the losses in transformers due to harmonic
currents.
Nr (3)
The harmonics component as selected with the cursor. Use
WX
to move the cursor. In the example screen this is the third
harmonic. The values to the right of this number will change
when the cursor is moved to another harmonic component.
A Current of the harmonic component as selected by the cursor.
%f
The amount of the selected harmonic component in the
current signal as a percentage of the total RMS value
(THD%r) or as a percentage of the fundamental (THD%f). You
can select %r or %f in the Settings menu (
3
).
Deg
The phase angle between the harmonic component and the
fundamental current.
40