16
(table continued from page 15)
10. Use
to select a tool.
: tool for selection of the sub-menu using
.
: instantaneous measurement cursor
management tool on a point of the curve. Use
the
keys to move the cursor on the time
scale. The measurement zone (item 9) is
refreshed. A long press on the
or
key
causes a shift to rapid motion.
5.3 Max - Min
This function displays the maximum, minimum, and
mean values (RMS over half-period) of the voltage
and current, and those of the positive and negative
instantaneous peaks of the voltage and current. The
information displayed is:
1 2 3 4 5 6
FO02
7
Figure 20: The information of the Max-Min screen.
Item Function
1. Reminder of the mode used.
2. Instantaneous network frequency (measurement
range: 40Hz to 70Hz).
3. Column of voltage-related values.
Max: true half-period RMS value of the AC
voltage measured since the power up of the C.A
8230 or since the last selection of the tool.
Calculation every half-period (i.e. every 10 ms
for a 50Hz signal).
AVG: true RMS voltage of the signal calculated
over one second.
Min: true minimum half-period RMS value of the
AC voltage measured since the power up of the
C.A 8230 or since the last selection of the
tool. Calculation every half-period (i.e. every 10
ms for a 50Hz signal).
Peak +: positive instantaneous peak value of the
waveform.
Peak -: negative instantaneous peak value of the
waveform.
4. Same information as described in point 3, but for
the current.
5. Current date and time.
6. Battery charge level.
10. Use
to select a tool.
: tool for selection of sub-menu using
.
: tool to reset the Max and Min displayed, as
soon as the key is pressed. Immediate display
of the new values.
5.4 Simultaneous display
This function displays all of the voltage and current
measurements (RMS, DC, THD, CF, PST, KF, DF).
The information displayed is read as follows.
1 2 3 4 5 6
FO03
Figure 21: The information of the Simultaneous display
screen.
Item Function
1. Reminder of the mode used.
2. Instantaneous network frequency (measurement
range: 40Hz to 70Hz).
3. Column of voltage-related values.
RMS: true RMS value calculated over 1 second.
DC: offset (DC component).
THD: level of total harmonic distortion (also
called THD-F).
CF: peak factor calculated on the waveform
displayed.
PST: short-term flicker (over 10 minutes).
DF: distortion factor (also called THD-R).
(table continued on page 17).
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