22
IM 701450-61E
• When the Applicable Class of the Equipment under Test Is D
Select Harmonics.
Select the waveform on which to perform computation.
When Display Mode (vertical scale of the bar graph) is set to LIN,
the unit is fixed to A. When set to LOG, the unit is EU and you can
specify the unit.
Set the computation start point.
Select LIN (linear) or LOG (logarithmic) for the vertical scale used on
the bar graphs showing the harmonic measurement data and the
standard limits for each order.
Set the source voltage of the equipment under test.
Select applicable class D.
Set the power of the equipment under test when the power ratio limit
of class D is to be applied.
Lists the harmonic measurement data and the standard limits for
each order.
6.
Press
ESC
. The Math1 Setup dialog box closes.
Bar Graph Display Example
The harmonic measurement data and the standard limits for each order up to the 40th
order can be displayed on a bar graph.
Waveform to be
computed
Limit (displayed in
white on the screen)
Computed value
of harmonics
List Display Example
The harmonic measurement data and the standard limits for each order up to the 40th
order can be listed.
Display example for applicable class
A, B, and D
Display example for applicable class C
Order
Computed value of harmonics
Limit
Order
Computed value of
harmonics
When the computed value is over
the limit, an asterisk is attached.
Fundamental current measured last
Maximum fundamental current
measured during waveform acquisition
In the standard, the limit of Class C is
defined as a percentage Limit (%) with
respect to the fundamental current.
To make the comparison easy against the percentage
limit (%) of the standard, the value obtained by the
equation
computed value of harmonics
÷
Max Fund
Current (the value specified in the dialog box for Class
C on the previous page)
is displayed.
Displays the value obtained by the equation
percentage limit
(%) of the standard
×
Max Fund Current (the value specified in
the dialog box for Class C on the previous page)
.
7 Performing Waveform Computation on Power Analysis Parameters
