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HDTV Digital Broadcast - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


guest
 Post subject: HDTV digital broadcast
Posted: Fri Oct 29, 2004 11:17 am 
Two questions on digital broadcast.

When a digital signal is passed through a component or filter, what type of slope can a digital signal have in any 6MHz segment?

What would the minimum VSWR for a digital transmit be through the component or filter?

Any recommend lit on this topic?

thanks!

tw


 
  
 
KC2SHO
 Post subject:
Posted: Mon Nov 01, 2004 11:29 am 
 
Captain
 

Joined: Mon Apr 12, 2004 4:50 pm
Posts: 20
Location: South Florida
Are you talking about digital cable or digital broacast television?

What country is the system for?

Also, HDTV is term for the resolution of the picture. DTV it the term for American digital broadcast (8VSB) regardless of the information carried by the signal.

_________________
KC2SHO


 
   
 
Guest
 Post subject: Boradcast
Posted: Mon Nov 01, 2004 11:43 am 
I would say both Off air broadcast and over cable..

I was told that an over the air digital channel:

Channel Bandwidth: 5.2MHz
Slope: +/- 1dB,...2dB max
Delay: 200uS.

I was not given the suggested return loss.

I am looking for confirmation or correction on this info.

It was suggested that there was a Texas Istrument article but I haven't been able to find it!

Thanks for any help!





Posted  11/12/2012

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