bridge tap 中文意思是什麼
bridge tap
解釋
搭接件-
For recent years, adsl has world widely employed and widely used in many aspects such as vod, remote medical treatment and e - shopping etc. but we noticed that the traditional telephone networks are designed for the transmission of low frequency signals, and the adsl ' s frequency rang is from 0 to 1. 104mhz, so we must confront the signal attenuation, the loop line noise impairments, the crosstalk interferences, the bridge tap reflections and the rf disturbances problems and many other problems when transmitting the adsl signals one the telephone networks
近幾年來， adsl在世界范圍內得到充分的使用，廣泛應用於視頻點播、遠程醫療、網上購物等各個方面。但是由於電話線網路是專門為傳輸低頻信號而設計，而adsl的頻譜范圍在0 1 . 104mhz內，因此在傳輸adsl信號時，面臨著信號衰減、線路噪聲、串音干擾、橋接抽頭反射和射頻干擾等等多方面的問題，這就要求在adsl開通之前對線路進行一系列的測試。 -
In particular, the bridge tap at the receiving side will make some sub - channels unusable. to that end, bridge taps on adsl lines must be examined and removed as much as possible. most importantly, there should be no bridge tap of any form at the receiving side
第四，線路的橋接抽頭將顯著地改變線路插入損耗的頻響特性和相頻特性，特別是接收端附近的橋接抽頭將導致某些子通道無法使用，所以在使用adsl時，一定要檢測線路上的橋接抽頭，並盡可能地去除橋接抽頭。 -
Thirdly, the wire size variations, vertical balance, insulation and joint features on adsl lines will affect the insertion loss and introduce additional noise, thus reducing the transmission rate and degrading the transmission performance. fourthly, the bridge tap on the adsl line will greatly change the frequency response and phase - frequency features of the line insertion loss
第三，線對線徑的改變、線路的縱向平衡性、線路的絕緣性能和線路接頭的性能將影響線路的插入損耗、引入附加噪聲，從而降低adsl的傳輸速率，影響adsl的傳輸性能。 -
Although adsl comes with new digital processing, coding, modulation and error correction technologies, it is also faced with various challenges out of subscriber lines, such as background noise, impulse noise, insertion loss, cross talk, wire size variations, bridge tap, line joints and line insulation, etc. all those factors tend to produce adverse impacts on the performance of high - speed transmission services. firstly, the insertion loss of copper lines increases in proportion to the length of lines
雖然adsl採用先進的數字信號處理技術、編碼調制技術和糾錯技術，但是在推廣adsl業務時，用戶線路的許多特性，包括線路上的背景噪聲、脈沖噪聲、線路的插入損耗、線路間的串擾、線徑的變化、線路的橋接抽頭、線路接頭和線路絕緣等因素將影響高速率傳輸業務的性能。
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