AEMC OX 7102 III, User Manual

Page: 178 / 226

Applications
IX - 178 SCOPIX
Applications (cont’d)
9. Automatic
measurement in
Harmonic Analysis
mode
Initially, there must be one or two traces on channels CH1 to CH4.
Recall
-
Only the channels (and not the functions) can be the subject of
harmonic analysis.
-
In this mode, the time base is not adjustable.
•
Set the traces for channels CH1 to CH4 to the mode "Oscilloscope".
•
Using the key
opposite
, select the "Harmonic Analysis" mode.
The traces of channels CH1 and CH4 are shown in a dark color, while the
traces of CH2 and CH3 are light (or in the color of the trace).
•
Use the "Display" menu (see §. Display) to select the
harmonic breakdown required:
-
the fundamental (F) and the first 15 harmonics
-
the even harmonics (2 to 30)
-
the odd harmonics (3 to 31)
The selection chosen appears under the breakdown display.
•
The "SIGNAL" table under the breakdown provides information on:
-
the active channel(s) (CH1 to CH4)
-
the RMS voltage of the signal in V
-
harmonic distortion rate (in %) of the signal
•
The " " symbol, present on the fundamental (F) or one of the
harmonics and modifiable using the stylus, means that measurements
can be made on the harmonic selected.
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