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App-7
IM 701210-06E
Appendix
App
Appendix 3 How to Calculate the Area of a
Waveform
Integ1TY
Total Area for Positive Side Only: S
1
+S
2
S
1
S
2
Integ2TY
Total Area for both Positive and Negative Sides: S
1
+S
3
–S
2
S
1
S
3
S
2
Integ1XY
(1) Multiple Loops
S
0
Start Point,
Stop Point
Area S= n
×
S
0
n: Number of Loops
(2) Non-Closed Curve
S
0
Start Point
Area S= S
0
Area Enclosed by
a Curve Connecting
the Start and Stop
Points
Stop Point
(3) Loop Tracing a Figure-Eight
Area S= | S
0
– S
1
|
(4) Spiral Loop
Area S= S
0
×
2+S
1
Number of Overlaps
Varies According to
the Number of Loops.
Stop Point
S
0
S
1
Start Point
Stop Point
Start
Point
S
0
Waveform
S
1