福禄克Fluke OptiFiber® Pro OTDR系列
福禄克Fluke CertiFiber®光纤损耗测试套件
福禄克Fluke SimpliFiber® Pro光功率计和光纤测试仪
福禄克Fluke Fiber QuickMap™多模光纤距离和故障定位仪
福禄克Fluke Fiber OneShot™ PRO光纤测试仪
福禄克Fluke VisiFault™ Visual Fault Locator电缆连通性测试仪
福禄克Fluke MultiFiber™ Pro光功率计及光纤测试工具包
福禄克Fluke FI-7000 FiberInspector™ Pro光纤显微摄像机
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WARNING: This will delete ALL results and settings, there is no way to undo this.需要特别提醒的是:恢复过程当中将会导致所有的仪器设置和原来内置的测试报告均将丢失,并且这不是一个可逆的操作过程。This feature is for rental companies and locations where data is considered sensitive. It will not wipe out any information on a thumb drive attached to the Versiv (TFS) unit. If you have access to YouTube, you can watch how to do it here.Tap Tools followed by Memory Status. Touch the parts of the screen in the order shown below:You will then see a Restore Defaults button appear.Tap this for a final warning about doing this:The Versiv (TFS) will then play a tune and reboot....
仪器内部发出“咔咔”声是热像仪自动校准引起的,通常发生在热像仪快速移动;刚开机。自校原因:热像仪会根据环境温度变化,自动调整以抵消该变化对探测器准确性的影响,该过程一般持续2~3 秒,屏幕出现停滞并显示“正在校准”。...
福禄克DTX-1800测试报告中ACR-N显示N/A,而不是PASS或者Fail,如下图所示:(在Linkware软件测试报告中的其他设备同理)如果你正在测试任何ANSI/TIA标准,你将会总是看到N/A出现在ACR-N测试指标栏目里面,因为ACN-N不是ANSI/TIA要求测试参数。但是因为许多客户比较关注ACR-N这个指标,所以福禄克在测试的时候,会测试这个参数,并且标注出来,为了特别工程师的需求。值得一提的是ISO/IEC标准是需要测试ACR-N的。ISO/IEC标准测试出现N/A的时候,一般是使用永久链路进行测试时候,并且插入损耗小于4db。通道测试就不会。总结:这个没有对不对,你的设备(DTX-1800)测试只是根据你选择的标准来判断的。总体PASS就是合格。...
A YouTube video explaining how this this works is also?available from here.This is applicable to the following cabling standards only:ISO/IEC 11801EN 50173Aus/NZJISWhen?the Insertion Loss is less than 4.0 dB at the frequency point where the measurement is made, then the measurement is ignored and not uated against the selected Test Limit/Cabling Standard in the DTX CableAnalyzer. This is often referred to as the 4 dB rule. It is not applied in the North American TIA Cabling Standards. Only certain test parameters and configurations will have the 4 dB rule. The tables below indicate which link? definitions and test parameters have the 4 dB rule applied to them. As an aid, the other rules are also listed.On a?short link, the Insertion Loss may never reach 4.0 dB. If that were to happen, then the entire measurement would be?ignored, or as the cabling standards phrase it; “recorded for information only”. If this were to happen with your DTX CableAnalyzer, you would see an “i” appear next to the summary result for that test parameter. In LinkWare software, the result would be recorded with “N/A’. An example is shown below:Concern is normally caused when the result has a negative margin. In this example we see the NEXT margin was -9.7 dB. A?negative margin is normally associated with a FAIL, but because the entire link never exceeded 4.0 dB Insertion Loss, it’s not a FAIL. Further?confusion lies in that the North American ANSI/TIA/-568-C.0 cabling standard does not have this 4 dB rule. If you were to test the same link above?with the same DTX CableAnalyzer, but using the North American Standard TIA Cat 5e Perm. Link, your result would be a FAIL.Please make sure you?have agreed in a Test Limit, in writing, before the project starts.Let’s review in detail how this works by looking at another example test result on the DTX CableAnalyzer.An ISO11801 PL Max Class D AUTOTEST was run on a short 6.0 m installed link, giving the following result:Looks normal. Let’s take a look at the NEXT result in a little more detail:You will observe that?the limit line has two colors, black and red. The cabling standards do not require the cable tester manufacturer to display where the 4 dB rule is implemented to the user, only that it is implemented. However, the DTX CableAnalyzer will indicate where the 4 dB rule has been implemented by changing the color of the limit line. If the?limit line is black,?the Insertion Loss was less than 4.0 dB. If?the limit line is red,?the Insertion Loss was 4.0 dB or greater. So for this Pair 1,2-4,5 the NEXT is not uated below 84.8 MHz. Let’s take a quick look at the Insertion Loss for Pair 4,5:As you can see, the Insertion Loss reached 4.0 dB at 84.8 MHz, as previously indicated in the NEXT Pair 1,2-4,5 graph above. NEXT contains two pairs. So which Insertion Loss pair do we use to implement the 4 dB rule? The disturbed pair is used for uation purposes. So if the worst case NEXT Pair was 1,2-7,8 then the?DTX CableAnalyzer would use the Insertion Loss values from Pair 7,8 to determine where the 4 dB rule is implemented.As previously mentioned, if the link is particularly short, then the Insertion Loss may never reach 4.0 dB and the entire NEXT result is “ignored”. Let’s take a closer look at the first example where the test result was:Looking at the worst case NEXT result, we see the entire limit line is black, suggesting that the Insertion Loss for Pair 4,5 never reached 4.0 dB:Looking at the Insertion Loss for Pair 4,5:We see that the Insertion did indeed never reach 4.0 dB, so the entire measurement is not uated against the limit line (ignored) and recorded as “i” Information Only. If this result was downloaded to LinkWare Software, the report would show N/A against this measurement:No further action is required by the installer. This is a valid standards compliant result....
In the DSX-5000 CableAnalyzer, this is implemented automatically. If you test to either “ISO11801 Class Ea Channel” or “ISO11801 Class?PL2 Class Ea” and the insertion loss measurement is less than 12 dB at 450 MHz, a relaxed?NEXT limit may be applied. It is not possible to change PASS/FAIL limits in a field tester based on the measured result of a parameter. Compliance with ISO/IEC 11801 Class EA?requirements can be verified using the DTX CableAnalyzer in one of two ways: by obtaining a PASS condition using the regular “ISO11801 Channel Class Ea” or ”ISO11801 PL2 Class Ea” test option, orby obtaining a PASS condition using an alternate “ISO11801 Chan Class Ea Low IL” or “ISO11801 PL2 Class Ea Low IL” option; if a PASS* conditions applies to insertion loss, the true result should be a PASS, as explained in the following.ISO/IEC 11802:2002 Amendment 2 (Published April 2010) – Table A.5 “For Configurations PL1, PL2, and CP1, whenever the class EA?permanent link insertion loss at 450 MHz is less than 12 dB, subtract the term 1,4((f – 450)/50) to the equation stated above for the range of 450 MHz to 500 MHz.” ANSI/TIA-568-C.2 (Published August 2009) There is no such rule/requirement in this North American Standard for Category 6A. Reality check It is very unlikely that implementing the “12 dB rule” is going to turn your failing NEXT and PS NEXT results into a PASS. That’s because the NEXT limit is relaxed between 450 MHz and 500 MHz only, and not by much. Let’s take an example:Tested to “ISO11801 PL2 Class Ea”Tested to “ISO11801 PL2 Class Ea Low IL”It did not change the outcome of the test result, because the failing NEXT was not between 450 MHz and 500 MHz. This may be better explained using an animation:Known issue in previous DTX code The “ISO ClassEa Ch AMD1 Low IL” and “ISO ClassEa PL2 25N1599?Lo IL” test options in the DTX had an insertion loss limit of 12 dB at 450 MHz to prevent the user from incorrectly applying the “12 dB rule” detailed previously. The DTX CableAnalyzer (Version 1.36 limits) had an insertion loss limit that has a step response at 450 MHz as indicated below:This could result in a measurement incorrectly assigning a FAIL for the insertion loss parameter. It’s incorrect because the existing limit for insertion loss still applies; the 12 dB is only used for assessing whether the relaxed NEXT limit should be applied. As a result, we have changed the limit for insertion loss in the DTX CableAnalyzer and LinkWare software. The above result will now look like:The change indicated was incorporated into the DTX CableAnalyzer Software Version 2.22 and LinkWare 6.0 releases. If the AUTOTEST fails now, it’s because it failed to meet the 12 dB insertion loss requirement at 450 MHz, indicating that this test option cannot be used to achieve a PASS result for the Class EA?channel. It is possible for the DTX CableAnalyzer to report a PASS* for insertion loss @ 450 MHz if the measured insertion loss at 450 MHz is closer to 12 dB than the specified accuracy of the DTX CableAnalyzer. This PASS* for insertion loss?indicates that the DTX CableAnalyzer cannot determine within its measurement accuracy whether the relaxed NEXT and PS NEXT limits are applicable. It does not necessarily indicate that the measured insertion loss is within the measurement uncertainty of the limits for insertion loss that is applicable to ISO/IEC 11801 Class EA?cabling. If necessary, the true insertion loss performance of the cabling can be verified using the regular “ISO11801 Channel Class Ea” and “ISO11801 PL2 ClassEa”?test options, and observing the test result for insertion loss. If this result does not contain a PASS* result for insertion loss, the PASS* for insertion loss of the ISO11801 Chan ClassEa?Low IL test, technically speaking, should be a PASS and not PASS*. This is a limitation of the code in the DTX CableAnalyzer. In conclusion: The overall result of an ISO/IEC 11801 Class EA?test should be as follows:If either the “ISO11801Channel Class Ea” or “ISO11801Chan Class Ea Low IL” test shows a pass, the result is a PASS.If either the?”ISO11801 PL2?ClassEa” or “ISO11801 PL2 ClassEa Low IL”?test shows a pass, the result is a PASS.If the “ISO11801Chan Class Ea Low IL” or “ISO11801 PL2 ClassEa Low IL”?test shows a PASS* that is caused by the result for insertion loss only, the result of the “ISO11801Chan Class Ea Low IL” or “ISO11801 PL2 ClassEa Low IL”?should be reviewed for insertion loss only; if this result is a PASS, the result of the “ISO11801Chan Class Ea Low IL” or “ISO11801 PL2 ClassEa Low IL” test can be considered to be PASS (the ‘*” is not applicable)....
A YouTube video explaining how this this works is also?available from here.This is applicable to ALL test limits in the DTX CableAnalyzer where a Return Loss measurement is made.When?the Insertion Loss is less than 3.0 dB at the frequency point where the measurement is made, then the Return Loss measurement is ignored and not uated against the selected Test Limit/Cabling Standard in the DTX CableAnalyzer.This is often referred to as the?3 dB rule.It applies to ALL cabling standards/test limits in the DTX CableAnalyzer.On a short?link,the Insertion Loss may never reach 3.0 dB.If that were to happen, then the entire measurement would be?ignored, or as the cabling standards phrase it; “recorded for information only”.If this were to happen with your DTX CableAnalyzer, you would see an “i” appear next to the summary result for that test parameter.In LinkWare software, the result would be recorded with “N/A’.An example is shown below:Concern is normally caused when the result has a negative margin.In this example we see the Return Loss margin was -2.2. A?negative margin is normally associated with a FAIL, but because the entire link never exceeded 3.0 dB Insertion Loss, it is not a FAIL.Let’s review in detail how this works by looking at another example test result.A TIA Cat 5e Perm.Link AUTOTEST was run on a 29.0 m installed link, giving the following result:Looks normal – very nice margins.Let’s take a look at the Return Loss result in a little more detail:You will observe that?the limit line has two colors, black and red.The cabling standards do not require the cable tester manufacturer to display where the?3 dB rule is implemented to the user, only that it is implemented.However, the DTX CableAnalyzer will indicate where the 3 dB rule has been implemented by changing the color of the limit line.If the?limit line is black, it?indicates that the Insertion Loss was less than 3.0 dB.If the?limit line is red, the Insertion Loss was 3.0 dB or greater.So for this Pair 3,6 the Return Loss?is not uated below 29.3 MHz. Let’s take a quick look at the Insertion Loss for Pair 3,6:As you can see, the Insertion Loss reached 3.0 dB at 29.3 MHz, as previously indicated in the Return Loss Pair 3,6 graph above.It’s an interesting rule, because if it were not in place, our margin for the above result would reduce from 10.2 dB to 9.0 dB:As previously mentioned, if the link is particularly short, then the Insertion Loss may never reach 3.0 dB and the entire Return Loss?result is “ignored”.Let’s take a closer look at the first example where the test result was:Looking at the worst case Return Loss result, we see the entire limit line is black, suggesting that the Insertion Loss for Pair?3,6 never reached 3.0 dB:Looking at the Insertion Loss for Pair 3,6:We see that the Insertion did indeed never reach 3.0 dB, so the entire measurement is not uated against the limit line (ignored) and recorded as “i” Information Only.If this result was downloaded to LinkWare Software, the report would show N/A against this measurement:No further action is required by the installer.This is a valid standards compliant result....
FLUKE DTX系列测试报告中为什么会出现*号?以及同样的线材在不同的测试平台上的结果为什么会有不一致的现象? 请看下面文章:通常如果测试的最差余量不幸落在了仪器的测试精度范围之外,在设备的测试界面上我们就会发现会多出(*).号标志 。 这恰好是基于ANSI/TIA/EIA-568-BandIEC61935-1的标准要求来做的. 让我们来看看在什么频率点出现1.9db的余量值为了更好的便于理解,在下附图中我们将标准极限值的用红色线条标识出来.用两条黑色的线条来标识出仪器的精度判别范围,其中黄色区域将是精度无法识别的区间.在所有的测试结果结果当中,如果不幸有测试的最差余量值落在了这个区间,那么将会有(*)予以明确标示.这对于理解在频率域范围内的波形幅度变化是非常重要的。我们选择线对Pair3,6-4,5绘制出下图:刚好在这个无法判别的精度区间,因此*会出现在最终的测试结果当中。总结:通常如果出现*号的标示,不论是通过或者不通过,我们认为当前的测试结果都是超出了机器的判别精度范围之外,因此我们需要就相同的线材进行多次测试,验证经过多次测试结果是否一致?或者换一下接头,把线材调一个头测试一下。另外,为什么不同仪器会有不同值。以DTX-1800为例:有的插入损耗0.1的结果上面是标注有*号的,标有*号的意味着是在精度范围之外,机器已经无法判断出测试结果究竟是不是通过,有些它就会以“失败”来判断出此次测试结果;同样,另外一台DTX-1800的机器上,测试结果是以通过来标识的,它的插入损耗为0.9也是标注有*号的,也就是说DTX-1800这台机器它的某些测试指标上下容许有正负1+1%的上下浮动误差。...
福禄克DSX-5000关于线缆类型的说明,如果您手里头刚好有福禄克DSX-5000 Cableanalyzer 线缆分析仪,那么您可以很明显的看到它与福禄克DTX1800的区别,那就是前面有S和U的区别,那他们是什么意思呢?U-FTP,SF-UTP,S-FTP,U-UTP,F-UTP,福禄克DSX5000线缆类型详细介绍技术资料:U-FTP双绞线:没有总屏蔽层,线对屏蔽为铝箔屏蔽的屏蔽双绞线;SF-UTP双绞线:总屏蔽层为丝网+铝箔的双重屏蔽,线对没有屏蔽的双重屏蔽双绞线;S-FTP双绞线:总屏蔽层为丝网,线对屏蔽为铝箔屏蔽的双重屏蔽双绞线。U-UTP双绞线:即通常所说的UTP双绞线,非屏蔽双绞线;F-UTP双绞线:总屏蔽层为铝箔屏蔽,没有线对屏蔽层的屏蔽双绞线;UTP Unshielded Twisted Paired 非屏蔽双绞线,除某些特殊场合(如受电磁辐射严重、对传输质量要求较高等)在布线中使用。...
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