Patent ID: 11929902
Assignee: INSPUR SUZHOU INTELLIGENT TECHNOLOGY CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 15:
16. The device for determining the PCIe signal bandwidth according to claim 12, wherein obtaining, by testing, the target frequency point at which the energy spectrum density of the output signal, after being subjected to inverse Fourier transform, of the PCIe signal corresponding to the PCIe signal type passing the target analog transmission link reaches the preset proportion of the original signal of the PCIe signal type comprises:
introducing the PCIe signal corresponding to the PCIe signal type into a high-bandwidth oscilloscope via the target analog transmission link, and capturing a testing waveform;
performing Fourier transform on the testing waveform to obtain a frequency domain envelope curve graph of the testing waveform; and
based on the frequency domain envelope curve graph, measuring the target frequency point at which the energy spectrum density of the output signal, after being subjected to inverse Fourier transform, of the PCIe signal corresponding to the PCIe signal type passing the target analog transmission link reaches the preset proportion of the original signal of the PCIe signal type.