Depending on the characteristics of the signal being used to calculate the integral and the type of integral being used, the additive nature of an integral calculation can cause the integral to drift连续in the positive or negative direction over time. To counteract this behavior, there are a variety ofintegral reset types available in the Integral Channel Calculation's Settings Window。这些重置类型如下：
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没有重置: integral is not reset, and the integrated signal is summed indefinitely.
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Timed Reset：积分是定期重置的，在重置类型菜单右侧的文本框中指定的间隔。
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Reset Each Cycle：每当源信号通过零到正值时重置积分。
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Time Constant Decay: In this mode, input samples are summed to generate the output, as for the standard integral mode. However, each time a new sample is added the sum is multiplied by a positive constant that is a little less than 1. For a constant input voltage Vmax, the resulting sum – namely, the integral output – approaches a maximum (Vmax.?) with the time constant (tau, ?) that is entered by the user. In electronic terms, this mode approximates the behavior of a 'leaky' analog integrator, or 'RC' low pass filter. Unlike a filter, the integral multiplies the output values by the sample period in seconds and correspondingly changes the units to V.s.
The Integral function in Time Constant Decay mode with a Time Constant of 0.6 seconds
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通过活动重置: uses a specific event to trigger the reset. This reset option uses the settings defined in the Event Options dialog pictured below, which can be accessed by left mouse clicking theEvent Options... button in the Integral Channel Calculation's Settings Window。
