crosstalk definition

This article mainly describes the influence of off-line crosstalk on data center cabling. The out-of-Line crosstalk of twisted pair wires is not a new thing. As early as 10 years ago, some people proposed this concept. At that time, due to the constraints of testing methods and the fact that the network was not sensitive to off-line crosstalk, therefore, it is no

With the development of science and technology, the computer price is getting lower and lower, the performance is getting better and better, the transmission speed of LAN is getting faster and faster, and the transmission medium of LAN is also switched from coaxial cable to twisted pair wires and optical fiber, twisted Pair wires have evolved from CAT1, CAT3, and CAT5 to CAT5E, CAT6, CAT6A, and CAT7. Although the performance of twisted pair wires has been continuously improved, a parameter has a

With the development of science and technology, the price of computer is getting lower, the performance is getting better, the transmission speed of LAN is more and more fast, and the transmission medium of LAN has shifted from coaxial cable to twisted pair and optical fiber, twisted-pair line from the initial CAT1, CAT3, CAT5 to the present CAT5e, CAT6 CAT7. Although the performance of twisted pair has been continuously improved, but there is a parameter like the ghost has been accompanied by

Near-end crosstalk NEXT) Most users carefully compare the numbers when viewing a technical data table or sales data, and make purchase decisions based on the cable performance data displayed on paper. However, in addition to the obvious performance data, the attenuation crosstalk ratio ACR is gradually becoming a new standard for measuring the cable performance of unshielded twisted pair wires. ACR consists

I believe many readers like me, especially those of the older generation, such as Hou Baolin and Ma sanli. In addition, I think that every time I mention the name of a crosstalk master, everyone will naturally think of his representative section, for example, the section "buy monkey" Ma sanli, "Drunk ghost" is a joke of Hou Baolin. But now the most popular crosstalk Masters (maybe a lot of people don't acce

Based on the discussion of crosstalk between codes in the previous section, we can summarize the requirements for the impulse response H (t) of the baseband transmission system as follows:(1) The baseband signal after transmission at the sampling point of the cross-talk, that is, the instantaneous sampling value should meet (4-18)(2) The tail attenuation should be fast. (4-18) The cross-talk condition given by the uncensore

; vFormatter:BinaryFormatter;begin vConnection:=SqlConnection.Create('Password=xxx;User ID=sa;Initial Catalog=xxx;Data Source=.'); vConnection.Open; vCommand:=vConnection.CreateCommand; vCommand.CommandText:='select UserOID,UserAID from Users'; vReader:=vCommand.ExecuteReader; vReader.Read; ShowMessage(vReader.GetString(1)); Haha, success. Two problems are found: (1) Many functions with the same name cannot be compiled even with overload. For example: function CreateCommand: CTSystem

When I was a child, I started to listen to crosstalk with pirated tapes (the name is hard to remember, but it is a "Chinese crosstalk selection"). The quality of the tapes is surprisingly good, I have listened to it many times, and almost memorized every line in it. I also liked crosstalk. I really want to thank the pirate who put so many of the most classic

Recently, many crosstalk listeners have posted a post to ask why the "Voice" sound better, so that they know that this habit has been deeply rooted in the hearts of the people. In addition, when listening to the recordings of Tianqiao music, he often heard the audience use this to mobilize the atmosphere and express his feelings. Guo Degang also borrowed it during the stage performances, and the results were very good. I felt obligated to share with y

It is a blessing to measure the crosstalk comrades to make a program during the festival. Measure two knives A: Today! No real skills, it is difficult to stand firm in society!B: You have to let others serve you!A: Do you know what I am doing?B: I can't guess this!A: I, surveyor!B: What? _? You?A: surveyor.B (surprised, scornful): You -- this small lattice, are you still doing measurement?A: Well, you don't think I'm thin! All of them are meat.B: So

These days, I have listened to some of the stand-alone crosstalk that Guo Degang said. Like the ugly lady and jiagongchuan. It sounds like a hot scene, and there are a lot of funny baggage, but I always feel that there is nothing to remember.Guo's counterpart crosstalk is also acceptable. He is also funny, talkative, and ironic about some social phenomena. GuoDe gangThe speech speed is quite fast. I alwa

, the return loss performance can be ignored. This does not serve as a basis for determining whether the overall link performance passes through. Near-end crosstalk NEXT) is another important parameter, which is a ratio between the received correct signal and the near-end crosstalk signal. In the process of signal transmission, high-frequency electronic clock causes strong mutual interference between signal

, carrying his wife outside looking for a lover. After returning home, you have to get divorced. Said that the daughter-in-law is not a kiss, carrying her husband outside to find a lover. She was bored with the little white-faced girl, and she forgot all about Zhang wenshun's kindness. Said little honey kiss, little honey is not a kiss, you took out the gold and silver treasures she offered. There was a horse dying of gold, and she put the thing into the door of the document. To be clos

Select the President and choose the President for Crosstalk Description James wants to be the president of the ugly nation. The Ugly nation election determines the final result based on the voting results of the States. If more than half of the States support the election, he can be elected, the voting results of each State are produced by the state's voters. If more than half of the state's voters support James, he will win the State's support. The n

a big beauty, she said: ' I like the station that left the handsome guy, I want to be his girlfriend, I want to give him a monkey. 'A: hehe.B: Another girl said, "He looks like a dog, alas."A: Do you have it?B: The first girl said, "I really like puppies."A: OhB: Another girl said: "You see his work is not a reliable, and not a random, the lack of bull." I also heard that this person is unfaithful, unjust, dubious, no fish, no man ...A: Stop! You say I hit you again, am I so miserable ?B: The f

For details, see: http://www.guodegang.cn/BBS/archiver/?tid-1691.html There are too many, this comrade is really not easy to collect so much! Deyun club used a stand-alone crosstalk set-up poetry injury the most is the night cold days gaunt man unbearable words and wine reminder sausage three cups of drunk seek incense surprise dream five more cold steamed chicken leaning with tears fans flowers I missed the small building lonely heart and month is a

Li: Hello, everyone. Today we are giving you a crosstalk. Li: Let's introduce myself first. My name is Li XX, And I'm Li Yi: I'm Yi XX, and I'm Yi Jing. [ Deduction Guide : Give full play to your name] Li: This surname is rare and easy: It doesn't matter if it's rare. I am familiar with it first. Everyone will know me tomorrow. Li: This guy is confident and easy: but you should note that although my surname is Yi, I am not "Yi" [ Xiaochang ]

1th Introduction to signal integrity analysis----basic definition and class four noise problems I. Definition of high speedThe signal integrity effect becomes important when the clock frequency exceeds or rises by less than 1 NS, which is often referred to as the high-frequency domain or higher-speed field. These terms mean that in a product or system where the interconnect is no longer transparent to the

only be used within a function are called "local variables".Note: The var keyword is omitted anywhere, and the variables defined are "global variables" (which can be used outside of the function) so, in general, do not omit the var keyword.Assignment Value and assignment address:Assignment value: Used to assign a basic data type (only one value) to a variable.Reference address: Used to assign a composite data type (possibly with multiple values) to a variable. All two variables change at the sa

To write a good C language, a beautiful macro definition is very important. Macro definitions can help us prevent errors, improve code portability and readability, and more.In the software development process, there are often common or common functions or code snippets that can be written as functions or encapsulated as macro definitions. So is the function good or the macro definition good? This requires u