7-27
IM WT3001E-51EN
Harmonic Measurement in Normal Measurement Mode (Option)
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Index
7.7 Selecting the Distortion Factor Equation
Procedure
START STOP
REMOTE
CAL
MOTOR
SET
CURSOR
NULL
MENU
STORE SET
MENU
LOWER ITEM
LOWER FORM
ALL
USER SET
DISPLAY
ITEM & ELEMENT
RESET
SET
PAGE
PAGE
SCALING
HRM SET
MEASURE
SYNC SOURCE
AVG
LINE FILTER
FREQ
FILTER
FILE
MISC
STORE
IMAGE SAVE
HELP
NUMERIC
WAVE
OTHERS
ITEM
FORM
U / I / P
WP/q/
TIME
USER
ELEMENT
UPDATE
RATE
HOLD
SINGLE
INTEG
LOCAL
SHIFT
Cursor keys
To exit the menu during operation, press
ESC
located above the
soft keys.
In the procedural explanation below, the phrase “press the
cursor
keys
” may be used. This phrase refers to the procedures for
selecting items and entering values and character strings. For
details on the procedures, see section 3.14 in the
User’s Manual,
IM WT3001E-01EN
.
1.
Press
HRM SET
to display the Harmonics menu.
2.
Press the
Thd Formula
soft key to display the Thd Formula menu.
3.
Press the
1/Total
or
1/Fundamental
soft key to select the equation for the
distortion factor.
Normal measurement
mode
Wide bandwidth harmonic
measurement mode
IEC harmonic
measurement mode
Explanation
When determining the measurement functions Uhdf, Ihdf, Phdf, Uthd, Ithd, and Pthd
of the harmonic measurement mode, select the denominator of the equation from the
choices below. For the equations, see section 7.11.
• 1/Total
The denominator is the measured data of all orders from the minimum measured order
(0
th
or 1
st
) to the maximum measured order (within the upper limit of the measured
order).
• 1/Fundamental
The data of the fundamental signal component (1
st
order) become the denominator.
Note
The minimum and maximum harmonic orders to be measured are the values selected in
section 7.6.