Problems Setting Up My Decklink

Hi Guys, i'm new to decklinks and their set-up so I apologize in advance if i'm leaving out any crucial info.

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I recently bought a Decklink 8K Pro Cinema Capture Card and a Blackmagic Design SDI to HDMI 6G Mini Converter in order to connect it to my Eizo UHD monitor. (I also have a m400 Quadro in the PC as well. I want to have a dual monitor set up while editing.


I tried installing the decklink to a PCI Slot. However due to the motherboard I cant get the Decklink to go completely into the slot, as it starts to but up to a part of the motherboard before it goes all the way in.

However I attached a PSU Power cord to the Decklink and powered up the computer. The Decklink's white light turned on and the spans started to spin, so it looks like its still able to work despite not being able to be seated firmly.


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I'm running a single Canare L2.5CHD Ultra Slim HD-SDI BNC Cable from the Decklink to the Mini converter and then a HDMI cable from the converter to the Eizo Monitor


I'm not sure the specs of the HDMI cable im using. If i do need to get a better cable, what sort of specs should i look for before buying?



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When i start up the comp and the eizo monitor, i'm able to turn the input to the correct HDMI setting. However when I do so it just goes to a blank screen. it does not however say "No signal"

Does anybody have any advice on how to get it set up?


Right now I also have a cheap monitor attached to the Quadro that is able to display properly.

BM is rather small and plain PCI-E card- why can't you seat it properly?
If it doesn't seat properly it's not good at all and it needs to be sorted before you go further. Card may show up in the system, but may not function properly at all, so you have no signal.

Thanks Andrew, I was able to get the Decklink seated about 97% in. (The gold/yellow connections are barely peaking out of the PCI Bed, the same amount as my Quadro card which is working properly)


What would be the next step to check?

I dont know if the SDI cable I mentioned has the right specs or possibly the HDMI as well.

I recently managed to get the Monitor attached to the Decklink to display a solid purple/magenta screen. Not sure if this is good or not!

Not good at all.
SDI cable- it has to be 3G. Some thin old ones are 1.5G only if I'm correct, but those are rather rare if you bought new one.
I really don't get why card can't seat priorly in slot???
Use different slot- even if just for test. This has to go in properly. Normally it doesn't if there are some body elements blocking by touching some parts of motherboard (big GPU cards etc). Other than this there is nothing which should stop it going properly in. Maybe you have faulty PCI-E slot.

I’ve tried putting the cards in different slots and they all have the same problem.

It’s not touching the GPU. The only thing I can think of is there’s a metal part that stick out the end by the SDI slots. It’s normally tucked between the end of the motherboard and the inside of the tower case. It seems like the space avaiable is to narrow for this part to fit properly. Sorry if I’m not explaining it correctly.


I’m going to buy a new HDMI cable and then use a new SDI cable that I know is 3G

Do I need just one SDI wore for this set up, or do I need multiple SDI cables to make it work?

[Dwaine Maggart]

The SDI cable you have is fine.

Open the Blackmagic Desktop Video Setup app and verify that IT sees the card.

You need to have Desktop Video 10.11 software, at a minimum, installed for the 8K card. Nothing earlier than that will even see the card. But you should use the current Desktop Video 10.11.2 software:

https://www.blackmagicdesign.com/suppor ... d-playback

I don't even know if this is Resolve related, since you've never mentioned Resolve, but if it is, and if Desktop Video Setup is seeing the 8K card, then make sure Resolve Preferences - Video I/O has been set to look at the 8K card.

Hi Dwaine, thanks for replying, I have Desktop Video 10.11 and the BM Desktop video setup app does see the card.

I was able to change the Video I/O under Resolve preferences to the 8K card. However the Dual Screen Option under Workspace is greyed out.

[Dwaine Maggart]

The dual screen option is for 2 GUI displays, and is not related to Video I/O.

Ok thanks! Do you have any advice on what I can look at next to rule out.

Under Desktop Video Setup it's only showing a Video output (Which I set for 2160p60) but not a Video Input.

[Dwaine Maggart]

What type of system are you on? What OS are you using? What Resolve version are you using?

Do you have the Project Settings - Video Monitoring set to Single Link and set to a frame rate and resolution that your Eizo is capable of displaying?

There is an LED on the converter between the power connector and SDI In BNC. When you connect the SDI cable to the SDI In BNC, that LED should get brighter if it's receiving a valid SDI signal. Is that happening?

Do you have the SDI cable connected to the upper connector of the 8K DeckLink card?

I'm on a Windows 10 PC using Resolve 15 Studio


I currently have a cheap AOC 1920x1080 Monitor attached to my Quadro Card and I have my Eizo CG248 attached to the 8k Pro Decklink via HDMI to the converter.

The Eizo Monitor's Native Resolution is UHD, so I have it set to 2160p30 for the video output in Resolve settings. (It also changed the settings in the Desktop Video Setup Menu as well)

There's two LED Lights on the SDI side of the Converter. The one between where it says Power+12V and SDI In does not get brighter when I put it in the SDI IN connector. (The light doesn't change if I take it in or out)


However when I put the SDI cable to SDI iN another LED light comes on thats situated right next to where it says SDI Lock


I feel silly asking, but which one is the Upper Connector of the 8k Decklink Pro?

[Dwaine Maggart]

Yes, that's correct. The Lock LED is the one that should get bright.

The top BNC is the one at the top of the card, farthest away from the PCIe connector plugged into the PC motherboard.

The display will work at most standard video resolutions. So try something simpler, on the Resolve Video Monitoring section, select 1080p at 24 FPS. Does that work?

Silly question, but the display has 2 HDMI and 2 DisplayPort connectors, are you sure you have the correct input selected on the display?

Thanks so much, I changed the SDI to the Upper connecter and powered everything on again and I'm getting a Full screen signal on my Eizo!

Thanks so much for all of your help!

I just have one quick question. When I put a checkmark under use 4:4:4 SDI, my eizo goes back to black. The footage im viewing was shot Raw with the Ursa Mini Pro. I read in the manual that this option is via Dual SDI Connections, is this something that I can do on my set up?

When I have it unchecked, does that mean im not getting the full "view" or data of the 12-but Raw Video File im viewing?

[Dwaine Maggart]

UHD 4:4:4 over a single SDI link requires a 12G signal. The 8K DeckLink card does that easily, and is doing that, when you have Single Link mode selected, and UHD, and 4:4:4.

Unfortunately, your converter only goes up to 6G. So when it gets that 12G SDI signal. it can't process it.

So with the gear you have, you'll have to be content with 4:2:2 at UHD rates. This is not really a big deal.

If you select HD resolutions, you can do 4:4:4.

So select 1080p-24, and then toggle back and forth between 4:2:2 and 4:4:4. I suspect you won't see any difference.