Subscriber line tester

Details Subscriber line tester Subscriber line tester

H - Electricity

04

L

H04L 1/24 (2006.01) H04B 3/46 (2006.01) H04L 12/26 (2006.01) H04M 1/24 (2006.01)

Patent

CA 2266219

A subscriber line tester that allows high-speed, long-time measurement is realized. The subscriber line tester is for communication lines that convey high-speed digital data. A transmission side tester has a signal generator connected to one end of a communication line and a first controller to control the signal generator. The first controller divides a measuring frequency region into two or more blocks, generates multi-sine waveforms obtained by combining sine waveforms of two or more frequencies in each block, and outputs the multi-sine waveforms to the communication line. A reception side tester has an A/D converter connected to the other end of the communication line, a memory, and a second controller to control the A/D converter and the memory. The second controller measures the mufti-sine waveforms in the most suitable measuring range for each block, and synthesizes a spectrum from each spectrum obtained for each of the above blocks.

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