9-1
9
IM 701830-01E
Waveform Analysis
9.1
Measuring Waveforms using Cursors
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For a description of this function, refer to page 1-19.
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Function
Restrictions
Cursor measurements cannot be used with the following waveform types.
• Snapshot waveforms
• Accumulated waveforms (except for most recent waveform)
Cursor types and measurement values
• Marker cursors: Used to measure specific positions on the waveform. (The markers
automatically move along the waveform.) You can set Cursors 1 and Cursor 2 onto the same
waveform or onto different waveforms.
Y+
Y-axis value at Cursor 1.
Yx
Y-axis value at Cursor 2.
∆
Y
Y-axis difference between Cursor 1 and 2.
X+
X-axis value at Cursor 1
Xx
X-axis value at Cursor 2
∆
X
X-axis difference between Cursor 1 and 2
1/
∆
X
Reciprocal of
∆
X value
•
H (Horizontal) cursors: Used to measure Y-axis values
Y1
Y-axis value at Cursor 1.
Y2
Y-axis value at Cursor 2.
∆
Y
Y-axis difference between Cursor 1 and 2.
• V (Vertical) cursors: Used to measure X-axis values
X1
X-axis value at Cursor 1.
X2
X-axis value at Cursor 2.
∆
X
X-axis difference between Cursor 1 and 2.
1/
∆
X
Reciprocal of
∆
X value
* The X-axis values of the V cursors that are used as user defined cursors (described later)
will take on values that correspond to the specified reference width.
• H&V cursors: Used to measure both X-axis and Y-axis values
Y1
Y-axis value at Cursor 1.
Y2
Y-axis value at Cursor 2.
∆
Y
Y-axis difference between Cursor 1 and 2.
X1
X-axis value at Cursor 3.
X2
X-axis value at Cursor 4.
∆
X
X-axis difference between Cursor 3 and 4.
1/
∆
X
Reciprocal of
∆
X value
• User defined cursors:
You can define a zero point (position of cursor Ref1) and an end point (position of cursor
Ref2) to be used as a reference for the measurement. The positions of two V cursors
(Cursor1 and Cursor2) can be measured with respect to the reference. The reference width
between the zero point and the end point and the measurement unit can be arbitrarily set
within a certain range.
The measured parameters are the same as those of the V cursors.
Range of the reference width: 0.0001E-25 to 1.0000E+30. You can also set 0, but the
measured values become meaningless in this case.
Unit: three alphanumerical characters or less
Movement range for H cursors
Cursors can be moved from -4 div to +4 div along the vertical axis, relative to the center of the
display.
The movement step is: T/div x 8
÷
384
Movement range for V cursors
Cursors can be moved from -5 div to +5 div along the horizontal axis, relative to the center of
the display.
The movement step is: T/div x 10
÷
displayed-record-length
Movement range for marker cursors
These cursors move along the selected waveform. If
two samples (max and min values) are located at the
same X-axis location, you can use the marker to read
off the values in order of sampling (see drawing at
right).
Linkage ON/OFF
You can use the Linkage setting to lock the distances
between Cursor1 and Cursor2, Cursor3 and Cursor4,
and Ref1 and Ref2. -- so that each time you move
one cursor, the other one automatically moves by the
same amount.
Sampling data
Time axis
The numbers indicate
the order in which
the measurements
are performed.
1
2
3
4
5
Vertical axis
Chapter 9
Waveform Analysis
