为了及早发现损坏和问题，监控各个频段通常很有用。可以选择性的使用 RMS 值（有效值）作这些频段的特征值。
Possibilities:
可能的选择:
Up to 32 different frequency bands can be defined. It is important to note that the format varies slightly depending on the configuration.
可以定义多达 32 个不同的频带，请务必注意，格式因配置而异。
Speed-dependent RMS value与速度相关的有效值 |
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Speed-independent RMS value与速度相无关的有效值 |
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Restricting the frequency range allows certain errors to be identified easily.
One example of this is imbalance. This is clearly shown by an increase in the frequency line for speed. Forming a selective characteristic value for the speed frequency can thus improve classification.
Selective characteristic values can also be formed for RMS values formed from the envelope.
Damage to the outer ring is shown more clearly in the increase of the frequency known as the bearing damage frequency. Damage to the outer ring is shown in the increase of the component of the outer ring damage frequency.
This bearing damage frequency is generally available from the bearing manufacturer.
限制频率范围可以容易地识别到某些故障。
不平衡 就是一个例子。 这可以通过速度的频谱幅值的增加清楚地显示出来。因此，为速度频率生成一个指定的特征值可以改善故障分类。
对于由包络形成的 RMS 值，也可以形成可选择的特征值。
轴承损坏频率的幅值上升更清楚地表明了外圈的损坏，外圈的损坏表现为外圈损坏频率分量的增加，这个轴承的损坏频率一般可以从轴承制造商那里得到。
Fig.: Selective characteristic value for outer ring damage
图.: 轴承外圈损坏的特征值频谱
By configuring a characteristic value with a frequency range around the damage frequency, rolling bearing damage to the outer ring can be detected at an early stage.
If frequencies are entered that are outside the minimum and maximum signal frequency for the selected channel, then only the domains between the minimum and maximum frequency will be analyzed.
通过配置在损坏频率附近的特征值，可以在早期阶段检测到滚动轴承外圈的损坏。
如果输入的频率超出了所选通道的最小和最大信号频率，那么将只对最小和最大频率之间的域进行分析。
图.: 限定频带进行评估
The two neighboring lines (samples) in the spectrum that are already outside the set window (one above and one below the window) will be partially included in the calculation depending on their distance from the window.
频谱中已经在设定的窗口之外的两条相邻线（样本）（一条在窗口之上，一条在窗口之下），将根据它们与窗口的距离，将部分纳入计算。
图.: 边际线的部分被计算
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