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Harmonic Analysis Mode - Display
Harmonic Analysis Mode (cont'd)
2. Control area
3. Status area
The "SIGNAL" area
The "Ref.:
Fundamental »
or "Harmonic X" area
4. Menu bar
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•
When the pointer is placed on one of a channel's parameters, it
directly opens the associated "Sensitivity/Coupling" and "Vertical
Scale" menus.
•
The pointer validates the channels.
The " " symbol indicates whether the channel is selected.
•
The status area indicates the automatic measurements performed on the
signals and the selected harmonic.
Display of information
on the traces
This indicates:
- the active channel(s): ch1 to ch4, (- - -) when the channel is not
active
- the RMS voltage of the signal in V
- the harmonic distortion rate (THD) in %
This indicates, for the fundamental or the selected harmonic, (
Ref. Harmonic 3):
- its value as a % of the harmonic of the strongest amplitude
- its phase in ° in relation to the fundamental
- its frequency in Hz
- its RMS voltage in V
The same menu toolbar is used as in "Oscilloscope" mode; some menus
are adapted to the "Harmonic Analysis" mode and the others are not active.
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Using the stylus, display of:
the parameters of the traces in the
same color as the trace: validity,
coupling, bandwidth limit,
sensitivity
Display of information on the
fundamental or the harmonic
THD
.com
1.877.766.5412
selected
−
2
2
V
V
RMS
f
=
V
f
Example:
VI - 121
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