查詢結果分析
來源資料
頁籤選單縮合
題名 | CATV系統用戶端CNR之評估及量測技術=Evaluation and Measure Technology of CNR in a CATV Subscriber Terminal |
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作者 | 黃進芳; |
期刊 | 無線電界 |
出版日期 | 19990900 |
卷期 | 81:3 1999.09[民88.09] |
頁次 | 頁64-75 |
分類號 | 448.88 |
語文 | chi |
關鍵詞 | CATV系統; 用戶端; 量測技術; CNR; |
中文摘要 | 依據〞有線電視系統工程技術管理規則〞及相關電磁原理,討論有線電視(CATV) 系統雜訊特性,分析系統工程查驗時載波雜訊比(CNR; Carrier to Noise Ratio)量測數據 可能產生的疑義,衍生若干引人深思的啟示,因此,本著對CATV系統、儀器的了解及量測經 驗,彙整及研討相關資料,提出實用、有效而準確的量測及修正技術,共同解決困擾量測人 員的數據爭論,並以實例驗證討論的結果,作為未來量測該參數的參考。 |
英文摘要 | According to the provisions of CATV Engineering Technology Management Act and related electromagnetic theory, the noise characteristics in a CATV system are explored. After analyzing the measuring data of CNR (carrier-to-noise ratio) in CATV systems, we find that there are some ambiguous concepts that cause somewhat confusions. Hence, based on our good experiences in CATV system technology and the understanding of measuring instrument functions, we provide an effective and accurate method to deal with the existing data problems. Measuring data illustrates and verifies our comment that the CNR measuring circuit recommended in the CATV System Engineering Technology Management Act is the foremost one. This comment will be useful to perform the CNR measurement for the CATV system engineering inspection in the future. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。