YOKOGAWA WT3002E - Selecting the Distortion Factor Equation

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
PRINT
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.