Adjustable pulse generator

Abstract

The invention discloses an adjustable pulse generator which comprises a waveform generation circuit, a waveform delay circuit and a waveform processing circuit. After the waveform generation circuit is powered on, rectangular waves with the adjustable duty ratio and period are periodically generated. The waveform delay circuit delays the rectangular wave for a first time and outputs the delayed rectangular wave as a first output signal, and delays the rectangular wave for a second time and outputs the delayed rectangular wave as a second output signal, wherein the second time is greater than the first time, and the time difference between the two times is adjustable; and the waveform processing circuit performs waveform processing based on the first output signal and the second output signal to obtain a pulse signal with adjustable pulse width, pulse value and pulse period. Visibly, the pulse width, the pulse value and the pulse period of the pulse signal provided by the adjustable pulse generator are adjustable, so that the pulse signal can well simulate the noise signal to be input into the line to test the filtering capability of the line, and the reference value of the line filtering capability test is improved.

Description

technical field [0001] The invention relates to the field of pulse generation, in particular to an adjustable pulse generator. Background technique [0002] With the development of information technology, the amount of information that the server needs to process increases sharply, which puts forward higher and higher requirements for the information processing speed of the server. With the increase of the signal rate of the server, the signal quality is more and more important to the stability of the server. The source of interference, once the signal is interfered by noise, there will be phenomena such as back groove, abnormal pulse, waveform jitter, etc., which will seriously affect the signal quality and thus affect the normal operation of the server. [0003] In the prior art, before the server leaves the factory, the filtering capability of the server line is tested, so that the server line meets the filtering requirements. At present, the testing method of the filte...

AI Technical Summary

Problems solved by technology

However, the existing pulse generators usually output a pulse signal with fixed pulse width, pulse value and pulse period, which cannot simulate the noise environment of the server line well, thereby reducing the reference value of the server line filtering capability test

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