Hioki MR8880-20, Instruction Manual

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8.4 Numerical Value Calculation Expressions
185
Chapter 8 Nume
rica
l Calculati
o
ns
8
Area Obtains the area value (V•s) enclosed by the
zero position (point of zero potential) and the
signal waveform. When calculation of the
range specified by the A/B cursors is selected,
the calculated area is constrained to the wave-
form between the cursors.
S :Area
n :Data count
di : Data on channel number i
h = Δ t: Sampling rate
X-Y Area
A cursor
B cursor
S di
i 1 =
n
∑
= h
•
Area of
shaded
portions
Start/end point
S = n x s
0
S :Area
n :Number of loops
When the trace consists of multiple
loops
When the trace is an open curve
End point
S = s
0
S :Area
(Area enclosed by the
curve and line connect-
ing start and end
points)
Start
point
s0
s0
Obtains the area value (V
2
) of an X-
Y composite waveform. The areas
within the lines are calculated as
shown in the figures on the left. The
calculation is available even if the X-
Y composite waveform is not intend-
ed for display.
To enable area calculation, specify
the calculation range using the A/B
cursors (Voltage axis or Trace) on
the waveform of each channel for X-
Y composition. (The area cannot be
specified directly by A/B cursors on
the X-Y waveform.)
S = | s
0
- s
1
|
S : Area
When the trace is a figure-8
s0
s1
End point
Start
point
When the trace is an open curve
End point
S = s
0
x 2 + s
1
S : Area
(The number of overlapping regions
increases with the number of loops)
s1
s0
Start point