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                                                                                                                                                                                                              新聞詳情

                                                                                                                                                                                                              福祿克DSX-5000專用跳線適配器DSX-PC5ES,DSX-PC6S

                                                                                                                                                                                                              日期:2022-07-26 10:19
                                                                                                                                                                                                              瀏覽次數:36
                                                                                                                                                                                                              摘要:有些廠商推出了無適配器的綜合布線系統測試方案,原理是參照光纖綜合布線系統測試方法中設置參考值的做法。
                                                                                                                                                                                                              我們都知道福祿克DSX-5000的跳線適配器是非常昂貴的,同理福祿克DTX1800也是一樣的情況,為什么會有這種情況呢?小小的連接頭需要這么貴嗎?

                                                                                                                                                                                                              有些廠商推出了無適配器的綜合布線系統測試方案,原理是參照光纖綜合布線系統測試方法中設置參考值的做法。從理論上而言,的確有其獨到之處。

                                                                                                                                                                                                              但如果我們從實際情況來考察的話,就會發現問題了。如果去看這些廠商的儀器說明書,他們會要求你使用好的跳線來進行參考值的設置。那么什么是好的跳線呢?是按照ANSI/TIA/EIA-568-B.2-1和IEC61935-2 for Patch Cord Testing.標準測試過的呢,還是你自己認為是好的跳線呢?而他們的銷售人員又在現場演示,使用受過損壞的跳線并不影響*終綜合布線系統測試的有效性。真的如此嗎?

                                                                                                                                                                                                              再簡單舉一個參數為例:特性阻抗。跳線允許的特性阻抗偏差在5%以內,而鏈路允許的特性阻抗偏差在15%以內。假設跳線的特性阻抗為95歐姆,鏈路的特性阻抗為115歐姆,兩者本身都在標準允許的偏差范圍內,但兩者互相之間的阻抗偏差為20歐姆了,偏差達到20%,這樣造成的信號反射,能使測試結果理想嗎?由于跳線與鏈路之間特性阻抗不匹配造成的綜合布線系統測試不通過,應該由誰來買單呢?

                                                                                                                                                                                                              聽上去又簡單又便宜的解決方案,在現實世界可就沒有看上去那么美了。使用性能完全不能確定的跳線,對綜合布線系統測試現場的情況完全無法認證的測試方案,在現在業主對項目質量越來越關注的情況下,簡直猶如盲人瞎馬,夜臨深池,是非常危險的。
                                                                                                                                                                                                              上圖為福祿克專業的跳線適配器,看著是沒什么特別的,但是它使用的插座確實全球*好的,加上自己線路板的設計等等,無疑使它成為了*好的適配器。

                                                                                                                                                                                                              使用福祿克DSX5000專用的跳線適配器適配器DSX-PC5ES,DSX-PC6S,首先它的綜合布線系統測試跳線是SSTP,特性阻抗為100歐姆±1歐姆,能在現場進行校準,在RL、NEXT、FEXT上保證其不會對測試結果造成不佳影響,其次,它使用的測試模塊,內部沒有電纜,完全是集成電路連接,避免了RJ45水晶頭NEXT的影響,這樣測試出來的結果才是正確、公正、科學的。

                                                                                                                                                                                                              所以為什么它這么昂貴也就存在著道理了。
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