YOKOGAWA WT3001E - Page 137

7-34
IM WT3001E-51EN
• Setting the Display Range of the Bar Graph
• Set the display range of the bar graph using harmonic order.
• The display range of bar graph 1 to bar graph 3 is the same.
• The minimum value is 0
th
order (DC). However, if the measurement function is set
toφ,φU,orφI,thereisnovalueforthe0
th
order. Thus, 0
th
order is not displayed on
the bar graph.
• IfthemeasurementfunctionissettoφUorφI,thereisnovalueforthe1
st
order.
Thus, 1
st
order is not displayed on the bar graph.
• The maximum setting is 100
th
order. However, bar graphs of orders that exceed the
upper limit of the measured order (see section 7.9) are not displayed.
• Cursor Measurement
• ON/OFF
A cursor can be placed on the displayed bar graph to measure the value at that
point.
• ON: Performs cursor measurement.
• OFF: Does not perform cursor measurement.
• Measurement Item
• Y1+: Y-axis value of cursor + of bar graph 1
• Y1x: Y-axis value of cursor x of bar graph 1
• ∆Y1:ThedifferencebetweentheY-axisvaluesofcursor+andcursorxofbar
graph 1
• Y2+: Y-axis value of cursor + of bar graph 2
• Y2x: Y-axis value of cursor x of bar graph 2
• ∆Y2:ThedifferencebetweentheY-axisvaluesofcursor+andcursorxofbar
graph 2
• Y3+: Y-axis value of cursor + of bar graph 3
• Y3x: Y-axis value of cursor x of bar graph 3
• ∆Y3:ThedifferencebetweentheY-axisvaluesofcursor+andcursorxof
bar graph 3
• Moving the Cursor
• Two cursors (+ and x) are displayed in each graph (bar graphs 1 to 3).
• The cursor position is set using harmonic order.
• Bar graph displays the harmonic order indicating the cursor position.
• The position of cursor + is displayed as in order+: 2.
• The position of cursor x is displayed as in orderx: 55.
• The harmonic order indicating the positions of cursor + and x are common to bar
graph 1 to bar graph 3.
Note
If immeasurable data exists, *** is displayed in the measured value display area.
• Limitations on the Bar Graph Display by Measurement Modes
Bar graph of harmonic measurement cannot be displayed in the following
measurement modes.
• IEC harmonic measurement mode
• Waveform computation mode
• FFT mode
• Voltage fluctuation and flicker measurement mode
• Cycle-by-cycle measurement mode
7.9 Displaying the Bar Graph and Making Cursor Measurements