21
IM 701450-61E
Setting the Computed Waveform of Harmonics (When Harmonics Was Selected in
Step 4 on Page 18)
5.
Use
jog shuttle & SELECT
to set the applicable class of the equipment under
test, computation source waveform, computation start point, bar graph scale,
supply voltage of the equipment under test, and other items of computed
waveform Math1.
•
The setup items vary depending on the applicable class as defined in the harmonic
current emissions standard (see page 5).
•
To perform waveform computation of harmonics continuously when waveform
acquisition is started, set the trigger mode to Normal. For a description of the trigger
mode, see section 6.1 in the
DL7440/DL7480 User’s Manual
.
• When the Applicable Class of the Equipment under Test Is A or B
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 the applicable class A or B.
The harmonic measurement data and the standard limits for each
order are listed.
• When the Applicable Class of the Equipment under Test Is C
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 C.
Select whether the active (input) power of the equipment under test
exceeds 25 W (True/False).
Set the fundamental current when the load on the equipment under
test is set to maximum. To set the maximum current measured on
the DL7400, perform harmonic computation with the maximum load,
and then set the value that is displayed in the Max box in the list that
appears when you select Show List.
If the active (input) power of the equipment under test exceeds 25 W
(True), set the power factor when the load on the equipment under
test is set to maximum. On the DL7400, set the power factor that is
measured according to the procedure given in section 5.
Lists the harmonic measurement data and the standard limits for
each order.
7 Performing Waveform Computation on Power Analysis Parameters
