Old cables, new, and HDMI puzzles

Recently I was using a 3D full HD front projector, and I was pleased to find that my old 10 metre Kordz ‘Diamond’ HDMI cable worked fine with it, including with full Blu-ray 3D. Then a few days later I switched out the receiver I was using for a different one, and suddenly there was no more 3D*, although all other HDMI video formats were working, including 1080p24 and 1080p60. This last requires significantly more bandwidth than 3D (which requires about the equivalent of 1080p48). I fiddled around with cables and found that I could get this working using a 5 metre Kordz ‘Diamond’. But this required some rather precarious stringing across my office, so I sought a new ten metre cable.

I settled on the 10 metre Kordz EVX. This has a ribbon form which makes it far more manageable.

But when I put the new EVX in place, it didn’t work in 3D! For a moment. The 5m ‘Diamond’ I had been using was plugged into HDMI 2 on the projector, so I switched the new cable to HDMI 2, and it worked there fine. Further experimentation revealed that for some reason HDMI 1 on the projector worked fine with all signals, except 24p(fp) (frame packed — ie. Blu-ray 3D format). That included normal 1080p24 and 1080p60. But HDMI 2 worked with all signals including Blu-ray 3D. And it worked with both the old Diamond and the new EVX cable.

Nothing in the projector manual about it, so goodness knows what’s going on.



* What do I mean by ‘no more 3D’? That could mean that a 2D signal was coming through, or it could mean that no signal was coming through. It was the latter. That suggests that the other components — the receiver and the Blu-ray player — thought that all was fine on the 3D front, and therefore continued passing through the 3D signal, but for some reason it wasn’t being received by the projector.

This entry was posted in 3D, Blu-ray, Cables, HDMI. Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *