What would be the best way of testing the connection between the Sky Q (2TB) box, Denon AVR X4300 and Iiyama display to find out why we can't set Sky to 10-bit 2160p colour resolution

Hi,

We have a Sky Q (2TB) box connected via HDMI cable to our Denon AVR X4300.

Our Denon AVR X4300 is connected via a HDMI cable to HDMI 1 port (HDMI 2.0) of our Iiyama PROLITE TE8668MIS-B1AG display.

We were setting up the 4K/ UHD channels on the Sky Q box and wished to set the colour resolution to 10-bit 2160p for TV shows and movies.

Setting Sky to 10-bit 2160p did not work and we had to use 8-bit colour resolution as an error message from Sky said that the colour settings were not set with the display for 10-bit colour resolution.

Iiyama told me that there was no settings to be configured for the display and that the display is set to 10-bit colour resolution and 4K and that a direct connection from Iiyama display to Sky box would work.

What would be the best way of testing the connection between the Sky Q (2TB) box, Denon AVR and Iiyama display to find out what is causing the problem.

Thanks,
Robbie
IP4IT StaffAsked:
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David Johnson, CD, MVPOwnerCommented:
You need High Speed HDMI Cable: Supports up to 4K at 60Hz, 3D, and Deep Color display technologies

Regular HDMI cables top out at 1080p resolution
https://www.digitaltrends.com/computing/hdmi-premium-high-speed-certification/
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IP4IT StaffAuthor Commented:
I believe that we did use a 4K cable, what I am trying to find out is if there is a way to test if the cabling is delivering 4K? Or indeed if we mixed up cables and a standard-non 4k cable goyt installed.

It is embedded behind plasterboard, so I am hoping it is the correct spec and working properly, I just need to test if I am getting 4K out of it. Is there a way to test for that?

Thanks,.
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David Johnson, CD, MVPOwnerCommented:
plug the sky box directly to the TV
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WakeupSpecialist 1Commented:
Another option is to purchase a known good certified 4k HDMI cable. and circumvent the cable that is behind the plastered wall.  If you get the correct 10k color scheme and the message does not pop up stating incorrect, you should be good to go.  However if the message still comes up, then potentially one of the units may not be functioning properly.  Perhaps the HDMI port?  Try switching to an alternative HDMI port if available and see if you get a different response.

And as stated already, is to bypass the Denon unit and see if you get any better response from the Skybox unit.
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WakeupSpecialist 1Commented:
No response from asker, question cleanup.
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