YOKOGAWA DL7440

App-12 IM 701450-01E
Appendix 2 How to Calculate the Area of a
Waveform
Int1TY
Total Area for Positive Side Only: S 1 +S 2
S 1
S 2
Int2TY
Total Area for both Positive and Negative Sides: S 1 +S 3 –S 2
S 1
S 3
S 2
Int1XY
(1) Multiple Loops
S0
Start Point,
Stop Point
Area S= n×S0
n: Number of Loops
(2) Non-Closed Curve
S0
Start Point
Area S= S0
Area Enclosed by
a Curve Connecting
the Start and Stop
Points
Stop Point
(3) Loop Tracing a Figure-Eight
Area S= | S0– S1 |
(4) Spiral Loop
Area S= S0×2+S1
Number of Overlaps
Varies According to
the Number of Loops.
Stop Point
S0
S1
Start Point
Stop Point
Start
Point
S0
Waveform
S1