Can A Receiver With a 100Mhz Bandwith Do Full Justice to a 1080i Signal?

Arthur S

Senior HTF Member
Joined
Jul 2, 1999
Messages
2,571
I am getting a Denon 5803A that has Component Video In and Out Terminals. Will a 100MHz bandwith degrade a 1080i signal?

Thanks

Happy Holidays
 

Allan Jayne

Senior HTF Member
Joined
Nov 1, 1998
Messages
2,404
IMHO the 100Mhz bandwidth will do fine,

To be exact it is hard to say because you lose a smidgen of horizontal resolution in the receiver, a smidgen in the cable coming in, and a smidgen in the cable going out to the TV and three smidgens may or may not cause visible degradation. Experts have some formulas that relate bandwidth of several components or cables in a row to bandwidth of one component or cable but I don't know those formulas and for all I know those formulas are watered down averages. I really think the smidgen lost in a 100 MHz bandwidth receiver circuit is too small to count because you need 37 MHz bandwidth for 1080i and at 100 MHz significant losses don't start (the frequency response doesn't become non-flat) down at the 37 MHz frequency range.

The definition of bandwidth for this purpose is the frequency range where the individual frequency treated worst comes out at least half as strong (within 3 dB) of the frequency treated best. If two components or cables in the signal path both treat the same frequency the worst, that frequency comes out only a quarter as strong as a frequency treated best. Go for a higher bandwidth and chances are the frequency response flatness will go up higher too. If for the entire signal path the bandwidth is 37 MHz I doubt if you will notice degradation of 1080i.

Video hints:
http://members.aol.com/ajaynejr/whyten.htm
 

Arthur S

Senior HTF Member
Joined
Jul 2, 1999
Messages
2,571
Thank you Allan.

I appreciated your detailed explanation of the answer to my bandwith question. I always keep an eye out for your responses to questions, and have been following your responses for several years.

I took a look at your video hints and several of your other interests and I found them to be of considerable interest.

Thank You
 

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