Measuring the power in an information-carrying signal relative to the power in the surrounding noise is a common task in many radio frequency applications, in particular for the satellite and cable television industries. This video explain what carrier to noise measurements are, the difference between carrier to noise and carrier to noise density, and how they are performed using a spectrum analyzer. A brief discussion of the difference between carrier to noise and signal to noise is also provided
Rohde & Schwarz Signal and Spectrum Analyzers: https://www.rohde-schwarz.com/us/products/test-and-measurement/signal-and-spectrum-analyzers_63665.html?mid=13799&midx=yt-tmfundamentals-signalspectrumanalyzers-productpage_____
Download the Spectrum Analyzer Fundamentals Educational Note: https://www.rohde-schwarz.com/us/products/test-and-measurement/analyzers/signal-spectrum-analyzers/spectrum-analyzer-fundamentals_253351.html?mid=13799&midx=yt-tmfundamentals-signalspectrumanalyzers-edunote_____
Watch Understanding Basic Spectrum Analyzer Operation: https://www.youtube.com/watch?v=P5gxNGckjLc
Timeline:
00:00 Introduction
00:15 Suggested viewing
00:35 About carrier to noise ratio
02:14 Common applications of C/N
03:11 Aside: carrier to noise versus signal to noise ratio
04:26 Overview: measuring carrier to noise ratio
05:05 Making C/N and C/N0 measurements
06:05 What do we mean by noise density (N0)?
06:59 When two measurement sweep are needed
07:48 Effect of channel bandwidth on C/N and C/N0
08:38 Summary