| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To perform a plurality of measurements with a real time oscilloscope. <P>SOLUTION: Required setting of the oscilloscope is performed, and a 10GBASE-T signal is taken (step 10). Spectrum analysis of a waveform is performed, but two peak values of tone frequency are found, and a third peak is found on a spectrum (steps 12 and 14). The spectrum level between a tone of low amplitude and the third peak level is measured, and SFDR is measured (step 16). Next, in step 18, a measured value is compared with the limit value which is reached based on the identified tone frequency, and acceptance or disqualification is determined (step 18). <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
