AEMC OX7102-CII, User Manual

Page: 109 / 208

Harmonic Analysis Mode - Display
SCOPIX Oscilloscopes VI - 109
Harmonic Analysis Mode
Display
The " Harmonic Analysis" mode is an option of the oscilloscope which must be
unlocked if it is to function.
Installation
The 24-character code supplied when the "HARMONIC ANALYZER" option is
acquired must be input into the " ? "
"Options" menu.
Restart the instrument.
"Harmonic Analysis" mode is then definitively installed.
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 Hz and 450 Hz.
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 analyzes of 2 ( OX 7102 ) or 4 ( OX 7104 ) 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 tactile screen
calibration.
Double tapping on the adjustment zone of a channel triggers access to these
adjustments.