---
title: "Model 6040 | 100 MHz Universal Pulse Generator [Obsolete]"
date: 2025-01-06T09:01:13Z
modified: 2026-05-05T15:39:56Z
permalink: "https://www.berkeleynucleonics.com/model-6040/"
type: page
status: publish
excerpt: ""
wpid: 19633
---

  [ A 

####  What Is Phase Noise? 

 



 ](#) 

Phase noise is the noise produced by fast, short term fluctuations in a signal. Phase noise diminishes the signal quality and increases error rates in communication links. Although there is no such thing as “no” phase noise, the less you have, the better.