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ACR：衰减串扰比 (ACR: Attenuation-to-crosstalk Ratio)

ACR is an abbreviation of the "Attenuation-to-crosstalk Ratio".

ACR是“衰减与串扰比率”的缩写 。

It is a framework that is calculated when examining a communication connection, which corresponds to the general performance of the cable. ACR is a mathematical formula that calculates the ratio of attenuation to near-end crosstalk for every arrangement of cable pairs.

它是检查通讯连接时计算得出的框架，该框架对应于电缆的一般性能。 ACR是一个数学公式，用于计算每种电缆对布置的衰减与近端串扰的比率。

ACR is a measurement expressed as a figure carried out in decibels (dB), among the signal attenuation generated by a wire or cable transmission medium and the near-end crosstalk (NEXT). In an arrangement of sequence for a signal to be acknowledged with a satisfactory bit error rate, the attenuation and the crosstalk required to be both reduced. Crosstalk can be abridged by making sure that twisted-pair wiring is strongly twisted and is not compressed, and by making sure that connectors among wire and cable media are appropriately rated and installed.

ACR是用电线或电缆传输介质产生的信号衰减与近端串扰(NEXT)之间的分贝(dB)表示的测量值。 在以令人满意的误码率确认信号的顺序安排中，衰减和串扰都需要减小。 通过确保双绞线被强烈绞合并且未被压缩，并确保电线和电缆介质之间的连接器得到适当的额定值和安装，可以消除串扰。

• Positive ACR calculations signify that transmitted signal strength is powerful and sturdy than that of near-end crosstalk.

  积极的ACR计算表明，与近端串扰相比，传输的信号强度更强大，更坚固。

• ACR can be used to describe a signal bandwidth (e.g. 250 MHz for category 6 cable) where the signal to noise ratios are satisfactory and adequate to support some specific applications.

  ACR可用于描述信号带宽(例如，类别6电缆为250 MHz)，在该带宽下，信噪比令人满意且足以支持某些特定应用。

• The maximum frequency for which positive ACR is guaranteed makes available a standard to assess the functional and serviceable bandwidth of twisted-pair cabling systems.

  保证正ACR的最大频率为评估双绞线布线系统的功能性带宽和可用带宽提供了一个标准。

• EIA/TIA indicates particular values for ACR in an arrangement of sequence to meet up the variety of classes of cable.

  EIA / TIA按顺序排列指示ACR的特定值，以满足各种电缆类别。

衰减 (Attenuation)

The phenomenon of hearing protector’s facilitation diminishes acoustic flux from flowing into the ears and this is called acoustic attenuation and is measured in decibels (dBs).

听力保护器的促进现象会减少流入耳朵的声通量，这称为声衰减，以分贝(dBs)为单位进行测量。

In electrical engineering and telecommunications, attenuation has an effect on the propagation of waves and signals in electrical circuits, in optical fibers, and in air.

在电气工程和电信中，衰减会影响波，信号在电路，光纤和空气中的传播。

Electrical attenuators and optical attenuators are generally manufactured constituents in this field.

电衰减器和光衰减器通常是该领域中制造的组件。

相声 (Crosstalk)

The phenomenon through which a signal transmitted on one single circuit or channel of a transmission system produces an undesired effect in an additional circuit or channel is called crosstalk in the field of electronics. Crosstalk is generally caused by undesired capacitive, inductive, or conductive coupling from one circuit or channel to another.

在电子系统领域中，在传输系统的单个电路或通道上传输信号所产生的信号在附加电路或通道中产生不良影响的现象称为串扰。 串扰通常是由于从一个电路或通道到另一电路或通道的不希望的电容性，电感性或导电性耦合引起的。

Crosstalk is a major subject of matter in structured cabling, audio electronics, integrated circuit design, wireless communication, and other communications systems.

串扰是结构化布线，音频电子，集成电路设计，无线通信和其他通信系统中的主要主题。

在布线中 (In Cabling)

In structured cabling, crosstalk alludes to electromagnetic interference from one unshielded twisted pair to another twisted pair, generally running in parallel. Other crosstalks comprise:

在结构化布线中，串扰指的是从一个未屏蔽的双绞线到另一根通常平行运行的双绞线的电磁干扰。 其他串扰包括：

• Near end crosstalk (NEXT)

  近端串扰(NEXT)

• Power sum near end crosstalk (PSNEXT)

  端串扰附近的功率和(PSNEXT)

• Far end crosstalk (FEXT)

  远端串扰(FEXT)

• Equal level far end crosstalk (ELFEXT)

  等电平远端串扰(ELFEXT)

• Alien crosstalk (AXT)

  外来串扰(AXT)

翻译自: https://www.includehelp.com/dictionary/acr-full-form.aspx

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