| 摘要 |
<p>The invention relates to a time domain reflection (TDR) testing method and device for transmission line, mainly comprising: firstly, in the transmission line, determining testing signal according withself- relativity and cross-relativity requirements according to testing requirements and transmitting the testing signal, which comprises: band limited random signal, frequency quick varying signal or regular modulation signal; then making TDR test according to the testing signal transmitted in the transmission line. SELT (single end line test) device designed according to the TDR test solution has very strong environmental adaptability, high testing accuracy and strong anti-noise and anti- interference ability. And making TDR test by the invention has a very great use value in testing a large-scale DSLAM (DSL access multiplexer).</p> |
