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在 LinkWare 中,ACR-N 显示为 N/A 而非通过或失败

In LinkWare, you may see ACR-N appear with N/A next to it rather than a PASS or FAIL. An example is shown below:
 
            LinkWare Not Available Result

If you are testing to any ANSI/TIA standard, you will always see N/A (Not Applicable) next to ACR-N since ACR-N is not a requirement in ANSI/TIA standards. It is however reported because many customers expect to see ACR-N on the test report. The limit line on the graph should ideally be black and not red; an enhancement request has been made to engineering.

ISO/IEC standards do require ACR-N. However, you may also see N/A appear if the Insertion Loss of the disturbed pair is less than 4 dB for the entire measurement frequency; often referred to as the 4 dB rule. It only applies to ISO/IEC Permanent Link testing and NOT Channel testing.

结论
There is no corrective action for you to take. Your tester and LinkWare are following the standard you selected.

作者:A. Young

创建日期:2014-2-25

上次修改时间:2014-2-25

 
 
 
 
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