How to Wire a Venue for 3D TV
DPI suggests pulling two HDMI 1.3 cables, two to three single-link DVI or one to two dual-link DVI.
It’s time once again to ask that age old question: “How do I plan for the future of 3D without a Crystal Ball?”
Most everyone has been teased with quality 3D by means of “Avatar.” Some have seen killer demonstrations of 3D on flat panels or DPI’s TITAN 1080p 3D, but how do you prepare your clients for the future of 3D?
More importantly, how do you pre-wire current and future projects to ensure installations are fully 3D capable?
As always, the best way to prepare for the future is to learn from the past and research the present.
Learn from HDMI 1.1
The first cables and devices left us all with enough headaches to keep Advil in business for another 50 years. We found digital, unlike analog, very unforgiving.
You either have an excellent picture, or you have nothing.
And “nothing” means no easy means of troubleshooting.
Additionally, we’ve learned that the best time to pull cable is before drywall is up and the job is finished. Attempting to snake long HDMI or DVI cables through existing conduit or through finished walls and ceilings is a thankless and difficult task.
Finally, let’s remember that there is always a company that will build a black box that accepts one format and converts to another.
Now, let’s look at what we know from the present. First, HDMI 1.2, 1.3 and DVI are all compatible. The current 120Hz 1080p 3D graphics cards found in servers output either 2X DVI, 2X HDMI 1.2, or a single dual link DVI cable.
In all of these cases you can find discrete left and right eye information, a data line, and a clock. Current Stereoscopic players used on media servers actually play two files (left eye file and right eye file) simultaneously. In this case, each file is a full 1080p 60Hz.
So, to plan for the maximum bandwidth scenario we need enough bandwidth to carry 2x 1080p 60Hz content from the source rack to the projector. In addition, current IR emitters must link to both the projector and the source. Since this is only a square wave, a single BNC cable will suffice.
Pulling it Together
Considering the above, the signal will undoubtedly be digital. The digital packet will be something less than 2x the current HDMI 1.3 standard. HDMI 1.3 cables are finally reliable enough that we all have our favorite trusted brands.
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