AEMC OX 7102 III, User Manual

Page: 118 / 226

Harmonic Analysis Mode - Display
VI - 118 SCOPIX
Harmonic Analysis Mode
Display
Presentation
The harmonic analysis function displays the fundamental and the 15 harmonic
ranks up to the 31st.
In this mode, the time base is therefore adaptive and is not manually adjustable.
This analysis is reserved for signals whose fundamental frequency is between
40 and 450Hz.
All the conventional settings of the oscilloscope (except for the time base and
trigger) remain active in this mode (Sensitivity/Coupling, Vertical Scale).
Only the channels (not the functions or the memories) can be the subject of
harmonic analysis.
Harmonic analysis of 2 (
OX 7xx2
) or 4 (
OX 7xx4
) signals can therefore be
displayed simultaneously.
If the "POWER MEASUREMENTS" option is installed, the harmonic analysis of
output (single-phase) can be displayed.
On the front, use the ZOOM key to modify the vertical display scale. The
vertical scale is modified each time the key is pressed.
Various possibilities are offered:
• 0 to 100%: The vertical display dynamic is adapted to the amplitude
of the fundamental.
• 0 to 50%: The vertical display dynamic is adapted to 50% of the amplitude
of the fundamental.
• 0 to 25%: The vertical display dynamic is adapted to 25% of the amplitude
of the fundamental.
• 0 to 10%: The vertical display dynamic is adapted to 10% of the amplitude
of the fundamental.
Double tapping on the bar chart zone triggers access to touch screen
calibration.
Double tapping on the adjustment zone of a channel triggers access to these
adjustments.
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