Six types of wiring product indicators

Users in the selection of six products, some product performance indicators have been mentioned in most articles, but there are some key indicators have not been the majority of users attention. And these indicators for a project construction quality is also very important to understand these problems, to improve the overall level of six wiring is very helpful.

1. Typical value (typical) or guaranteed value (guaranteed)
Generally speaking, the guarantee value is a commitment value, is in the worst case can achieve the target, the actual test results will be better than the guarantee value, not less than the guaranteed value. The typical values and the average value can be seen from their definition, the actual test may be better than the typical value, it is possible that the typical value difference. But users should be more concerned about the worst----how bad they are. Generally, the guaranteed value is lower than the typical value 3~5db. Therefore, if the value of a product is compared with the typical value of B product, this is not a reciprocal comparison, the user should compare the guarantee value of two kinds of products. Because the guaranteed value means that the actual performance will be better, without the possibility of being worse than the guaranteed value. The typical value and the average cannot give the user 100% confidence, only the guarantee value can give the user 100% confidence. A reputable vendor should give a guaranteed value, because it is a promise. The following figure is an example of a typical value that may be less than six of the standard in the actual test, but the guaranteed value is always above the six class standard.

2. Long channel and message channel are equally suitable
Do not think that long channel indicators than the text message is better, but in fact, some of the parameters of the message to the channel than long channels, many manufacturers give the index is based on 100 meters of the channel. This does not actually reflect the user's requirements. In fact, in many cases the channel is between 30 meters to 40 meters. The user chooses the product to notice whether the manufacturer has affirmed the parameter whether the long channel and the short message channel equally is suitable, such six kinds of products can give the user the actual guarantee. The Systimax Gigaspeed XL series also ensures that both the long channel and the SMS channel (less than 15 meters) meet the latest test requirements for the six-class cabling system. /upimg/allimg/070602/240.gif

3. Performance metrics are given based on the number of test results-10 test results, or thousands of test results
If the given parameter is based on more than 10 test results (some vendors give the metrics even based on a test result only). Only a few samples of more than 10 test results can not explain the problem, only those after thousands of tests validated six categories of products to give users assurance.

Systimax Gigaspeed uses the most advanced test tools MDM to achieve tens of thousands of test results with 2000 samples to ensure that the value can give users 100% confidence.

4. The whole band or a single frequency.
Also note that all indicators should be for the entire band of the worst value, if only to provide some of the frequency of performance indicators users should be careful. Why some vendors are given only a few frequency performance indicators. Because it is possible that the parameters of these specific frequencies are the best. But at least they are not so good at other frequencies. As you can see from the above illustration, if the performance curve from 1 to a MHz is not smooth. Performance at 250MHz may be better than 100MHz performance. You know, the network is applied throughout the band, should look at the entire band of the worst value, not a specific frequency.