Blackmagic Multibridge Extreme issues at DVinfo.net

John Jencks · July 30th, 2006, 01:59 AM

Hi guys, having a little bit of a problem with connecting a Multibridge Extreme and 30" Apple display to my G5 Powermac. Getting a picture and sound has been easy, but the image displayed on the screen has a lot of artifacting that makes it look as if it was interlaced.

If I go into the System Preferences, I see that my Mac is recognising the Multibridge/30 display as a Television with a maximum refresh rate of 24 Hertz at 2048 x 1556, if I drop the resolution down to 1280 x 720 I can choose a refresh rate of 60 Hertz, but now the image is unacceptably low in resolution.

Please can you help me, I'm already balding and this is making my remaining follicles quiver.

Thanks in advance
John

P.S. I am running a Dual 2 GHz PowerPc G5 with 3.5 GB Ram and a NVDA Gforce 6600LE graphics card

Robert Lane · July 30th, 2006, 05:50 PM

John,

The Decklink and AJA cards are designed to allow real-time monitoring to an NTSC or broadcast monitor, that's why the image looks interlaced, because it is. As long as your monitor conforms to NTSC standards the image should look fine, assuming you've setup the card properly. Connecting it to a computer display won't look right because it's not an NTSC-type display.

Connect the Cinema display to your nVidia card, connect your external NTSC monitor to the Decklink card.

John Jencks · July 31st, 2006, 11:53 AM

Quote:

Originally Posted by Robert Lane

that's why the image looks interlaced, because it is.

Walks out of appartment, and on to street.
Runs at full speed towards brick wall.
Hits head, falls over.
Stands up and takes a bow.

Robert, thank you very much for your help.

July 30th, 2006, 01:59 AM	#1
John Jencks Regular Crew Join Date: Jun 2005 Location: London, UK Posts: 43	Blackmagic Multibridge Extreme issues Hi guys, having a little bit of a problem with connecting a Multibridge Extreme and 30" Apple display to my G5 Powermac. Getting a picture and sound has been easy, but the image displayed on the screen has a lot of artifacting that makes it look as if it was interlaced. If I go into the System Preferences, I see that my Mac is recognising the Multibridge/30 display as a Television with a maximum refresh rate of 24 Hertz at 2048 x 1556, if I drop the resolution down to 1280 x 720 I can choose a refresh rate of 60 Hertz, but now the image is unacceptably low in resolution. Please can you help me, I'm already balding and this is making my remaining follicles quiver. Thanks in advance John P.S. I am running a Dual 2 GHz PowerPc G5 with 3.5 GB Ram and a NVDA Gforce 6600LE graphics card Last edited by John Jencks; July 30th, 2006 at 11:19 AM.

July 30th, 2006, 05:50 PM	#2
Robert Lane Go Go Godzilla Join Date: Nov 2004 Location: Scottsdale, AZ USA Posts: 2,823 Images: 15	John, The Decklink and AJA cards are designed to allow real-time monitoring to an NTSC or broadcast monitor, that's why the image looks interlaced, because it is. As long as your monitor conforms to NTSC standards the image should look fine, assuming you've setup the card properly. Connecting it to a computer display won't look right because it's not an NTSC-type display. Connect the Cinema display to your nVidia card, connect your external NTSC monitor to the Decklink card.