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A general statement about the health of a machine can be made by comparing the measured characteristic values with limit values defined by standards (e.g. ISO 10816) or by the manufacturer of the machine.
Characteristic values are calculated from the measured signals, which are representative of the status of the system at the given measurement point.
Norms can be used in part to determine alarm limits. In addition, limits can be set based on the machine's history and the experience of the operator.
通过将测量的特性值与标准（如ISO 10816）或机器制造商定义的限值进行比较，可以对机器的健康状况做出基本说明。
特性值是根据测量信号计算出来的，它代表了系统在给定测量点的状态。
规范可以部分用于确定报警极限。此外，可以根据机器的历史和操作者的经验来设定限制。