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The module automatically adjusts the measurement signal dynamically (autogain) to ensure that it is measured with the highest possible accuracy. This adjustment is made in multiple steps. Each step amplifies the input signal more than the last. If the signal was very small for a long time and a impact suddenly occurs, an overflow may occur with some calculated characteristic values. This is indicated by the overflow bit for the respective channel (Overflow01-04 in the Status register) being set and the affected module characteristic values being set to their maximum.

With Function model 0 - Standard, there are also the OverflowCharacteristicValues and OverflowFrequencyBands registers. These are automatically generated by Automation Runtime and directly indicate the overflow status of the individual characteristic values and frequency bands.

If an overflow occurs or if an internal threshold is exceeded, the autogain for the next measurement is reduced by one level. If no overflow occurs for a certain number of measurements (adjustable using the AutogainDelay register), or the signal stays below the internal threshold, the autogain is increased by one level again.

If overflows are occurring frequently, increasing AutogainDelay may help.

 

该模块自动动态调整测量信号（即自动增益 autogain），以确保以尽可能高的精度进行测量。此调整分多个步骤进行，每一步都比上一步放大输入信号。如果信号长时间非常小并且突然发生撞击，某些计算出来的特征值可能会发生溢出。这表现为各通道的溢出位（Status（状态） 寄存器中的 Overflow01-04）被置位 ，受影响的特征值被设置为最大值。

对于 Function model 0 - Standard, 还有 OverflowCharacteristicValues（特征值溢出标志位） 和 OverflowFrequencyBands（频带溢出标志位） 寄存器， 这些寄存器由 Automation Runtime 自动生成，并直接指示各个特征值和频带的溢出状态。

如果发生溢出或超过内部阈值，则下一次测量的自动增益将降低一个级别。 如果在一定数量的测量值内（使用AutogainDelay 寄存器调整）没有发生溢出，或者信号保持在内部阈值以下，则自动增益将再次增加一个级别。

如果溢出频繁发生，增加自动增益延迟（AutogainDelay）可能会有所改善。