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Within the last 12 months sales of high definition televisions have skyrocketed. As we speak’s reducing-edge HDTVs and high definition sources demand dramatically higher data rate transfers than earlier generations of Audio / Video components. They place incredible bandwidth/performance demands on HDMI cables. In fact, in the present day’s most advanced elements operate very near the limits of current HDMI technology.

On-line boards have been inundated with questions about HDMI cables. As an industry insider I have been answering a number of these questions. Listed here are five of essentially the most often asked.

1. Is there really a distinction between expensive HDMI cable and inexpensive cable?

There is a difference between expensive and price range HDMI cables. It revolves around the quality of the cable build and the supplies used. The query is whether this will affect my set up. First you need to decide the size between your source and your display. If this is less than 15 toes a “customary” cable will be OK.

If it is more than 15 toes you’re finest to consider a “high speed” cable. Make sure that you just buy from a reputable supply and that the cable is marked with the HDMI logo and says that it is a version 1.three (don’t worry a couple of, b or c as these are only testing protocols) In case you live in a coastal or high humidity space it is price considering getting a cable with gold connectors. While this will not improve your signal it will stop corrosion degrading the signal over time.

Some individuals assume that because the signals are digital either the cable works or not. Sometimes nevertheless the 1s and 0s aren’t all there because of signal degradation due to inferior cable construction. That may be especially true with audio and video sources similar to CDs and DVDs. The signal will degrade gracefully, to a point and then it will break up. Music and video is just not like data. Digital signal processors can work with a degraded signal and deliver less than good sound and pictures.

You’ll be able to by no means improve a digital signal by utilizing an expensive cable but you can actually degrade a signal utilizing an inferior cable.

2. Is it OK to bend HDMI cables?

It is best to avoid bending an HDMI cable, actually don’t 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 effect on how the transmitted information looks from one side of the cable to the other. This means that a cable with higher shielding and a more precise distance between the “intelligence” and “ground” wires, will yield a greater connection with less interference. Many things can affect your signal. The electrons will create a standing wave in the cable; this will create a small magnetic discipline across the cable. Any imperfection or splice in the cable will disrupt these waves and will mirror/refract the waves. Magnetic information can also 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 within the market about the entire versions. What you might be referring to right here is the specification model, not to be confused with the connector type.

As long as you choose model 1.3 you will be OK. The suffixes of a, b or c merely refer to the testing protocols and really have no consumer impact, although 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 each digital and analog transfers, so it works with both digital and analog Visual Display Units. “DVI-D” stands for “DVI-Digital” and helps digital transfers only. DVI additionally consists of provision for a second data link for high resolution displays, although many units do not implement this. In people who do, the connector is typically referred to as DVI-DL (dual link).

While you convert HDMI to DVI you drop the audio as DVI doesn’t 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 want additionally to evaluate the software settings in your supply so that they know that you are not outputting audio from the HDMI but a separate outlet.

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

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

You are going through an HDCP (High def copy protection) concern here.

HDCP is a form of digital copy protection developed by Intel Company to forestall copying of digital audio and video content material as it travels throughout various cables and connections, even when such copying can be permitted by fair use laws. Each machine 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 instances per second. If you are having problems with blank audio or video it is more than likely that certainly one of your units does not help HDCP.

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