rgb via bnc connections on n-vi

Posted by: john R1 on 21 April 2007

was browsing through the n-vi manual, and i read naim recomend rgb via bnc as the next best connection after the dvi,if i select this on the options i get a pink screen, is this right, also had the latest firmware and software updates done today, up to now all seems fine, will post if i get any problems,
Posted on: 21 April 2007 by AV@naim
quote:
Originally posted by john R1:
was browsing through the n-vi manual, and i read naim recomend rgb via bnc as the next best connection after the dvi,if i select this on the options i get a pink screen, is this right, also had the latest firmware and software updates done today, up to now all seems fine, will post if i get any problems,


Sounds like you have not set the screen or n-Vi to RGB mode (its probably still in comp/YPbPr mode). you must set screen to the same as the n-Vi (i.e. RGB->RGB or YPbPr->YPbPr)

Note:- RGB is Macrovision copy protected on CSS encrypted discs (i.e. prerecorded DVD)
Posted on: 22 April 2007 by john R1
munch and AV@naim, thanks for the replys, can see what you are saying, so have got to set my input on plasma to rgb as well as n-vi, will i get a better picture through rgb or will i not notice any differance.
Posted on: 22 April 2007 by AV@naim
Well, technically...

RGB is better, as you get full bandwidth up each cable core.

YPbPr has to "make" green:-

Y = luminance(brightness).

Pb = difference between blue and luminance (B - Y).

Pr = difference between red and luminance (R - Y).

But, to be honest, on some setups YPbPr is practically indistiguishable from RGB

(I am sure to get slated for saying that now...)

I reiterate the fact that RGB is copy protected, so if you are using CSS encrypted discs, you may get no picture via RGB.
Posted on: 22 April 2007 by john R1
AV@naim, set up n-vi to out-put rgb, set up plasma to accept rgb, screen looked very green, think i will stick with the YPbPr connection, thanks anyway.
Posted on: 22 April 2007 by john R1
forgot to ask what are CSS encrypted discs ?
Posted on: 22 April 2007 by Roy Donaldson
It's Macrovision protection. It's basically on about 95% of all commercial DVDs you can buy.

So, RGB is a very good output, but in reality as DVDs have CSS on them, then you can only use YPbPr.

I opted to use the DVI output instead.

Roy.
Posted on: 22 April 2007 by john R1
cheers roy, don't have the option of dvi.
Posted on: 22 April 2007 by AV@naim
quote:
Originally posted by john R1:
AV@naim, set up n-vi to out-put rgb, set up plasma to accept rgb, screen looked very green, think i will stick with the YPbPr connection, thanks anyway.


Sounds like you've got it the wrong way, the other way now.

Usually if you set:-

-player to YPbPr and screen to RGB you get green

-player to RGB, but screen to YPbPr, you get pink

Did you ok the RGB settings, before leaving the menu's?

-CSS = Content Scrambling System, DVD's "protection". If the player detects a disc with CSS on it, it will turn on the Macrovision CP on the RGB output
Posted on: 23 April 2007 by john R1
AV@naim, am going to stick with the ypbpr connection, if and when i change my plasma will try the DVI output, thanks anyway.
Posted on: 23 April 2007 by Richard Dane
The component YPbPr output on the n-Vi (and DVD5) is extremely good. Don't naturally assume that the digital output will be better. On my Fujitsu the component picture is preferable to the DVI input when using either a DVD5 or n-Vi (This may depend on the quality of the component lead - I am using the Naim BNC-BNC lead, which is the best I've come across). However, with lesser players, it's the other way round....
Posted on: 23 April 2007 by Manu
Agree, for me too, component is better than DVI probably due to the distance from the DVD5 to the Runco projector, also using a 10meter Naim RGB1. On the 110'' screen, the component is more ''film like'', the DVI is over-sharpened.

One thing i have noticed: the image is cleaner if all 5 BNCs are pluged on both ends (if such a connection exists), even if only 3 are active. A better ground? a better impedance match for the cable? anyway it works for Runco plasma and projectors and with other cables too.