| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a test and measurement instrument which can analyze input signals both in a time domain and in a frequency domain almost simultaneously. <P>SOLUTION: An input port 172 receives an input signal, and a digitizer 176 digitizes the input signal. A decimator 178 is coupled to the digitizer and decimates the digitized input signal to generate a decimated input signal. A digital downconverter 180 is coupled to the digitizer and shifts frequency for the digitized input signal to generate a frequency-shifted input signal. A memory 182 stores the decimated input signal and the frequency-shifted input signal. <P>COPYRIGHT: (C)2012,JPO&INPIT |
