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5 of the Most Frequent HDMI Questions Answered

 

In the final 12 months sales of high definition televisions have skyrocketed. As we speak's chopping-edge HDTVs and high definition sources demand dramatically higher data rate transfers than earlier generations of Audio / Video components. They place incredible bandwidth/performance calls for on HDMI cables. Actually, right this moment's most advanced elements operate very near the limits of present HDMI technology.

 

 

On-line forums have been inundated with questions on HDMI cables. As an business insider I've been answering a number of these questions. Listed here are five of the most usually asked.

 

 

1. Is there really a difference between expensive HDMI cable and cheap cable?

 

 

There is a difference between costly and price range HDMI cables. It revolves across the quality of the cable build and the materials used. The question is whether or not this will have an effect on my set up. First it is best to decide the size between your source and your display. If this is less than 15 feet a "customary" cable will be OK.

 

 

If it is more than 15 ft you're finest to consider a "high speed" cable. Make positive that you just purchase from a reputable supply and that the cable is marked with the HDMI emblem and says that it is a version 1.3 (don't fret about a, b or c as these are only testing protocols) When you live in a coastal or high humidity space it is value considering getting a cable with gold connectors. While this will not improve your signal it will stop corrosion degrading the signal over time.

 

 

Some folks assume that as the signals are digital either the cable works or not. Sometimes however the 1s and 0s aren't all there because of signal degradation because of inferior cable construction. That can be very true with audio and video sources akin to CDs and DVDs. The signal will degrade gracefully, to a point after which it will break up. Music and video will not be like data. Digital signal processors can work with a degraded signal and deliver less than good sound and pictures.

 

 

You possibly can never improve a digital signal by using an expensive cable however you may definitely degrade a signal using an inferior cable.

 

 

2. Is it OK to bend HDMI cables?

 

 

It's best to avoid bending an HDMI cable, certainly do not kink it. What this does is modifications the distance between wires, shielding and insulation internally within the cable.

 

 

The process of cable manufacture can have a dramatic impact on how the transmitted information looks from one side of the cable to the other. This signifies that a cable with higher shielding and a more exact distance between the "intelligence" and "ground" wires, will yield a better connection with less interference. Many things can affect your signal. The electrons will create a standing wave within the cable; this will create a small magnetic subject across the cable. Any imperfection or splice in the cable will disrupt these waves and will mirror/refract the waves. Magnetic information also can leak from one cable to another.

 

 

3. Should I purchase 1.3a HDMI Cables or 1.3b HDMI Cables or what?

 

 

There is a bit of confusion in the market about the entire versions. What you are referring to right here is the specification model, to not be confused with the connector type.

 

So long as you select model 1.three you will be OK. The suffixes of a, b or c merely refer to the testing protocols and really have no consumer impact, though makers are using them to market. (bigger numbers/letters are better... )

 

 

4. Will I be able to get the same quality video/audio with a HDMI to DVI-D cable?

 

 

"DVI-I" stands for "DVI-Integrated" and supports both digital and analog transfers, so it works with both digital and analog Visual Display Units. "DVI-D" stands for "DVI-Digital" and supports digital transfers only. DVI also includes provision for a second data link for high decision displays, although many units do not implement this. In those that do, the connector is typically referred to as DVI-DL (dual link).

 

 

When you convert HDMI to DVI you drop the audio as DVI does not support any audio signals. You will must take a separate cable link between your supply and the sound system for this to work.

 

 

You will need also to review the software settings in your supply in order that they know that you're not outputting audio from the HDMI however a separate outlet.

 

 

Some new DVD players, TV sets (including HDTV sets) and video projectors have DVI/HDCP connectors; these are physically the same as DVI connectors however transmit an encrypted signal utilizing the HDCP protocol for copy protection. Computers with DVI video connectors can use many DVI-geared up HDTV sets as a display; nonetheless, because of Digital Rights Management, it is just not clear whether such systems will finally be able to play protected content, because the link is not encrypted.

 

 

5. When I join my laptop Blu-ray to my HDTV I get an error about violating copy rights. What can I do?

 

 

You might be dealing with an HDCP (High def copy protection) subject here.

 

 

HDCP is a form of digital copy protection developed by Intel Company to stop copying of digital audio and video content material as it travels across numerous cables and connections, even if such copying would be permitted by honest use laws. Each system handshakes with the opposite after which passes an encryption key to say that it is OK to display or play the signal. It does this for each frame, typically 30 times per second. In case you are having problems with blank audio or video it is more than likely that considered one of your gadgets doesn't assist HDCP.

 

 

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