video bandwidth and modulation bandwidth

[senmeis]

Hi,

two terms of bandwidths can be read regularly: video bandwidth and modulation bandwidth. As far as I understand modulation bandwidth is related to the modulated signal processing and video bandwidth to the power measurement. My question is if they are related with each other.

 

[crutschow]

My question is if they are related with each other.

Not particularly.

Video bandwidth refers to a signal that is carrying video or video-like information.
I don't see that it's particularly related to power measurement, which is usually not a parameter of interest for a video signal.

Modulation bandwidth generally refers to the added bandwidth due to the modulation of a carrier frequency.
It's determined by the modulation frequency components and the type of modulation used.

 

[std_match]

"Video bandwidth" is also a term used in spectrum analyzers:

Spectrum Analyzer Basics: Bandwidth - Siglent

Download PDF Spectrum analyzers are useful tools for broadcast monitoring, RF component testing, and EMI troubleshooting. There are a number of common adjustments available with many modern analyzers that can optimize performance for a particular application. In this application note, we will...

www.siglenteu.com

 

[crutschow]

Yes, it would appear the TS may be referring to those terms as used with Spectrum Analyzers.