Fluke: Testing 6 open cabling systems

Although there are many challenges in Testing 6-class cabling systems, the difficulty may be the compatibility of 6-Class components of different manufacturers. Unlike Category 5 cabling systems, you can choose any brand of RJ45 plug module, distribution frame, jumper, etc. As long as the installation meets the requirements, the components of the link can meet the standard requirements. However, the six types of cabling systems are generally composed of components designated by the manufacturer to meet the requirements. To avoid being limited to components of a supplier, You need to test and verify that the connection modules and jumpers used are compatible with the six types of standards.

The performance of Class 6 connectors is a key factor

To make the six open cabling systems compatible, TIA and ISO standards define the physical and Electrical Properties of RJ45 plug. This is because the performance of The Link after the two-end connector matches the connection depends on the characteristics of the RJ45 plug, especially the impact on the test of NEXT-end string bypass. The result is that the connector manufacturer must design according to the known physical characteristics of RJ45 plug, and ensure that the minimum Electrical Characteristics of NEXT are exceeded after matching. The minimum requirement for NEXT after matching is 100 MHz, which is 52.5dB.

Inevitably, manufacturers will claim that their components are compatible. It is important to understand the data they use to prove compatibility. Is a good example.

. Display the matching results of different performance test plug on lines 3, 6-4, and 5.

Start with the horizontal axis of the image. It indicates the matching of the first non-embedded plug at 100 MHz NEXT, in dB. The plug before matching can be regarded as the crosstalk value of RJ45 plug Used for testing. The standard requires the connector manufacturer to produce a series of test plugs for testing. Their NEXT values are between 36.4dB and 37.6dB, then insert the test plug into the same connection module produced by the manufacturer and test the matching NEXT value. The RJ45 test plug with different performance will bring different matching results. The blue line indicates the NEXT range of the test plug from 36.4dB to 37.6dB.

Plug performance outside the Blue Line area will be ignored. The results of the combinations vary by line. Since the combination of-is usually the worst performance of NEXT, we focus on the 3-6-line pairs.

The 15 test results are the matching results of the same connection module of a manufacturer and 15 test plug with different NEXT features. The result is displayed as a green dot, which is a green line of "best match. 14 test headers are within the specified range. Good news for this manufacturer. 14 test plugs, after being inserted into the same connection module of the plant, exceed the minimum requirement for NEXT to 52.5dB at 100 MHz. Therefore, the 3, 6-, and 5-line pairs of the module meet the standard compatibility. However, there are