Category: General articles

  • HDMI 2.0 – key features of the new specification.

    HDMI 2.0 was unveiled to the world at IFA Berlin in September.  Following this, Aussie company Kordz, stocked in the UK by HD Connectivity, became the first approved HDMI 2.0 Adopter in the world, outside of the HDMI Forum, and is the only HDMI 2.0 Adopter in Australia.  Founder David Meyer lifts the lid on the key features, inner workings and potential pitfalls of this new specification.

    Each time a new version of HDMI is announced, there follows a buzz of new features and formats, but also a groan from the custom installation community as to what the implications may be.  HDMI 2.0 paves the way for some fantastic new video and audio capabilities, but no need to panic – the changes may not run as deep as you might think.  Ultimately HDMI 2.0 will settle into a place of normality, as has happened with every iteration before it.

    So what does HDMI 2.0 offer, how is it different, and what are the headline features that you need to know about?  Let’s take a look.

    Development of HDMI 2.0

    HDMI 2.0 is the first major HDMI specification release since version 1.4 back in 2009, so it’s fair to say a lot has changed, and it needs to.  There are now two HDMI organisations;

    • HDMI Licensing, LLC, with its seven founder companies.  Developers and managers of the HDMI 1.x generations, and now also appointed licensing, marketing and compliance managers of HDMI 2.0,
    • HDMI Forum, Inc., a non-profit corporation founded in 2011, with more than 80 member companies for broader market development of future versions of HDMI,

    An important point to note is that HDMI 1.4b remains as an ongoing specification, with HDMI 2.0 running concurrently with its subset of additional optional features and enhancements.  Existing HDMI Adopters do not automatically get an upgrade; they must sign an addendum and be accepted before they can become adopters of HDMI 2.0.

    Key Features of HDMI 2.0

    Here’s a summary of some of the key new features of HDMI 2.0;

    Video

    • 2160p/60 (4K) 8-bit 4:2:0 in the existing 9Gbps data rate (previously 30fps limited),
    • 2160p/60 (4K) 10 or 12-bit 4:2:2 colour at a new higher speed of 18Gbps,
    • Anamorphic video modes for 2.37:1 picture,
    • New ‘Dual View’ video mode for two simultaneous full screen 1080p images (on 3D backbone),

    Audio

    • Up to 32 channels of One Bit audio to 192kHz, and up to 1536kHz sampling in 2-channel mode,
    • New 10.2, 22.2 and 30.2 channel modes for ‘3D Audio’ speaker placement,
    • Up to 4 simultaneous audio streams to accompany Dual View video or multi-language,

    Other

    • New 2.0 clock mode, EQs and data scrambling for transmission robustness,
    • New improved CEC 2.0, HDCP 2.2 support, and expanded applications for DDC.

    In this article we’ll focus on 2160p, touching on anamorphic, but coming back to explore audio some other day.

    Emerging Trends – 4K TV Firmware upgrade to “HDMI 2.0”

    The first key new feature of HDMI 2.0 out of the gate is the upgrade of 2160p (4K) to 60 frames per second within the existing defined HDMI bandwidth, where previously it was limited (under HDMI 1.4) to 30fps.  Both Sony and Panasonic have recently announced firmware updates for their existing 4K TVs to enable this feature, indicating that there is no new hardware (aka ‘speed’) required.  As an aside, they tend to tout this upgrade as “HDMI 2.0”, but that’s a non-compliant practice as it’s actually just one of a multitude of new features of HDMI 2.0 that they’re talking about.  What they really mean is that the firmware just adds newly defined support 2160p/60, 8-bit 4:2:0… assuming the existence of content.

    So how is it possible to double the frame rate without doubling the bandwidth?  The answer lies in the ‘…8-bit 4:2:0’ reference; save on colour data, give back in frame rate.

    Chroma subsampling and pixel data packing

    Chroma subsampling is a process of compressing, or rather stripping out colour data to reduce file size &/or video transmission bandwidth load.  The premise is that the human eye is far less sensitive to colour than in is to brightness and grayscale, by a factor of 20, in fact.  As such, the amount of colour information in video can potentially be reduced without us really noticing… or that’s the plan.

    The trick is to leave the resolution and gray scale untouched, which is why it’s only applicable to Component video (YCbCr) signalling, where the separate luminance (Y) channel can be left intact.  The most common chroma subsampling methodologies are 4:2:2 with half colour data when compared to 4:4:4 original, and then there’s 4:2:0 (as used with DVD & Blu-ray) with just one quarter of the original colour data.

    The sampling commonly occurs over a 2×2 pixel array, where each pixel comprises a Luminance channel (Y) and two Chrominance channels (Cb & Cr).  Fig.1 below shows a simplified depiction of the uncompressed array before any subsampling, called 4:4:4.  Fig.2 shows how HDMI 1.4 (and prior) handles YCbCr, where everything from 8-bit 4:2:0 to 12-bit 4:2:2 produces precisely the same bandwidth at a constant 96 bits per array (same as 8-bit 4:4:4).  Fig.3 depicts 4:2:0 as it really should be, being how HDMI 2.0 handles it; with 8 bits of ‘Y’ per pixel, and just one of each 8-bit colour component Cb & Cr across the whole 2×2 array.

    What they’ve done with HDMI 2.0 is recognise that 8-bit 4:2:0 natively nets 48 bits per sample array, and they’ve actually passed on the savings.  That is, they halve the bandwidth, which enables them to then double it again with frame rate.  Voila, 30fps goes to 60fps in the same bandwidth as before.  Note this is ONLY applicable to 8-bit 4:2:0.  This is not where HDMI 2.0 stops – there’s even better formats on the horizon.

    HDMI 2.0 Need for speed

    There are several formats of 2160p (4K) that are included in the HDMI 1.4 specification, all of which run at 8.91Gbps, the specification then capping out at 10.2Gbps.   HDMI 2.0 introduces some more at this legacy level, and several superior combinations at double this rate, being 17.82Gbps (rounded to 18Gbps, 6Gbps/ch).  This is well beyond the limits of HDMI 1.4, and defines the top end of HDMI 2.0.  The range above 10.2Gbps is referred to as “HDMI 2.0 mode”, whereby the TMDS Clock is slowed to 1/40th of the data rate to counter the effects of EMI at such high speeds.  Other techniques like data scrambling are also employed to improve stability.

    HDMI 2.0 Cables

    Right off the bat – THERE IS NO SUCH THING!  If anyone offers you so-called “HDMI 2.0 cables”, turn and run.  It will be either a marketing tactic, or expression of ignorance.  Either way it’s non-compliant.  When the HDMI 2.0 specification was first announced, it was accompanied by this statement;

    “..Current High Speed cables (category 2 cables) are capable of carrying the increased bandwidth.”
    – HDMI Licensing, LLC, Press Release, 4 Sep 2013
    http://www.hdmi.org/press/press_release.aspx?prid=133

    There is no new speed, no new cable.  Does it make sense that a cable rated to 10.2Gbps can then carry up to 18Gbps?  Logically no, but they have some tricks up their sleeve.  2.0 introduces a parametric-like new sink EQ system which supposed to make a 10.2Gbps tested cable perform up to 18Gbps.  It can’t however fully compensate for the collapsing effect of cable length, and will be expected to cap out at around 3m with a decent cable.  Beyond that, it’s all bets off and there is no new cable spec, speed or directive.  My prediction – HDMI cables will have to turn active, as some already have.

    2.37:1 Cinemascope

    Another fantastic feature of HDM I 2.0 is the ability for it to support different pixel aspect ratios, namely 4:3 (nothing to do with 4:3 TV, by the way).  Eg; a 1080p image is comprised of 1,920 pixels wide and 1,080 pixels high.  Every pixel is square, so content is fed to each pixel in 1:1 ratio.  The array of 1:1 pixels then determines overall image aspect ratio, being 1.78:1, or 16:9.

    What HDMI 2.0 has introduced is the ability for content to be formatted using 4:3 pixel ratio.  Every pixel in a supporting display could potentially be fed 4:3 anamorphic content, even though the pixel is still 1:1 square.  In practice, a projector with a matching anamorphic lens will horizontally stretch the image by 1/3 (4:3).  The result is 2.37:1 picture aspect ratio (1.78/3)x4 = 2.37.

    No more encoded black bars.  It means we can look forward to maximising image resolution for cinemascope 2.37:1 in a standardised format.

    Summary

    HDMI 2.0 brings many benefits and some exciting new features, paving the way for a level of AV immersion the likes of which we’ve never seen.  Yes it means new hardware, but that points to opportunity for the custom AV dealer/installer.  HDMI speeds are ever increasing, and that means more demand on quality infrastructure to ensure everything works as planned.

    Imagine a premium 2160p/60 2.37:1 aspect home cinema projection system with brilliant 12-bit 4:2:2 colour and 10.2 audio system.  How about dual-view gaming with 2 players each experiencing their own full screen 1080p image on the same TV, with separate audio tracks being fed to their headphones?   Or to really make your head spin, imagine an IMAX Private Theater ™ with 30.2 channel 3D digital sound.  Phwoah!

  • Troubleshooting: “No picture on one of the TVs connected to my matrix”

    In order to effectively troubleshoot this problem, we need to deduce whether or not the matrix, the HDMI cables, extender set, or other connectivity accessories such as wallplates, repeaters or cable joiners are at fault.

    Troubleshooting Step 1

    Swap the outputs over on the matrix to see whether the problem follows the cable run, or stays associated with the HDMI port. This will help us decide whether it is the cable run or the matrix at fault.

    Outcome 1: Problem follows the cable.

    You have isolated the issue to be associated with that particular cable run and TV. If possible, try an alternative HDMI cable (such as the one connected to another TV on the matrix) to deduce whether a known to be working cable solves the issue. If it does, there is a good chance that the original HDMI cable is at fault and requires replacing.

    Outcome 2: Problem stays with the port on the matrix.

    You have isolated the issue to be associated with that particular HDMI port on the matrix. This issue could be hardware or software related.

    Firstly, to rule out whether it is a software issue, follow the hard reset procedure (described in manual) to reset the matrix software. If this does not revive the troublesome HDMI port, it is likely that there is a hardware fault with the matrix.

    In this case, Contact Customer Services. for a replacement unit.

  • A quick introduction to Ultra HD 4K

    Ultra HD began its life known as ‘4K’. The term 4K was officially adopted by the HDMI® organisation in 2009. In October 2012, the 4K working group of US-based organisation CEA renamed 4K to Ultra HD.

    Regardless of its title, Ultra HD it is a video format offering four times the resolution of what is known as 1080p. Ultra HD has been also referred to as ‘4Kx2K’, ‘4K/2K’, and ‘Quad HD’. In simple terms, 1080p video (what is called ‘Full HD’) is actually like viewing a 2 megapixel photo. 4K, however, is the equivalent of viewing an 8 megapixel photo. 1080p = 1920 x 1080 pixels. 4K = 3840 x 2160 pixels (consumer version)

    What are the requirements for viewing Ultra HD?

    1. Displays:
    Ultra HD is initially dominating the high-end purist projector format, where it is most beneficial to improving the viewing experience. Sony have already shipped their first 4K projector. As of November 2012, it is appearing in flat panel displays due to consumer demand and/or manufacturers value-adding.

    2. Sources:
    The Blu-ray disc format is compatible with Ultra HD content once enough layers to hold the data are incorporated into the disc. A new ‘Ultra HD capable’ BD player will be required, of course.

    3. Content:
    As of November 2012, the movie industry is gearing up for Ultra HD content. James Cameron’s Avatar 2 will be filmed in Ultra HD and other high profile directors are working with Ultra HD cameras now. Back catalogue film negatives are being transferred to Ultra HD digital masters.

    4. Cables:
    From a cabling point of view, Ultra HD video will actually be the first true technical/performance challenge to many long length HDMI cables which claim to be High Speed.

  • Can HDanywhere TwinWire or SingleWire be used on existing networks?

    Our HDTV multiroom products use the physical properties of the twisted pair copper cables to transmit an uncompressed HDMI signal. It does not alter or compress the HDMI transmission into IP for example.

    It cannot be linked in to an existing IP network. Our latest HDBaseT models however can transmit both HDMI and Internet traffic over a single Cat5/6 cable.

  • ULTRA HD 4K Q&A

    Answers to various 4K / Ultra HD questions we’ve been asked recently…

    What is the content availability for Ultra HD/4K currently?
    Very limited right now. In the US, Sony are shipping pre-loaded media servers with their 4K panels (in what seems to be a stop-gap measure) until an industry-ratified medium comes along. This will most likely be answered by Blu-ray, with the BDA working on defining a new expanded and elevated specification right now, expected for release later this year.

    Why do home technology professionals need to be aware of Ultra HD/4K? Are consumers buying into this new technology?
    The need to be aware because it’s happening now. It’s possible some are thinking of it as 3D – a passing fad or a peripheral feature. In reality it is similar to the leap we made from SD to 1080p; it’s being supported by SMPTE, studios and vendors alike to such a high level that most in the community are not yet aware. Consumers will inevitably buy into the technology, but it will take time. Serious penetration won’t happen until prices come right down and content is broadly available. Ten years ago you could only get 1080p by upscaling before Blu-ray (and HD-DVD) came along in 2006, but look at it now – 1080p is ‘normal’. The 4K path will be the same, albeit in a much shorter timeframe.

    What are some common misconceptions about Ultra HD/4K?
    Misconception one – there’s no content. OK, it’s true right now – but it’s close. There is actually already an impressive back catalogue of movies in 4K – but the new BD spec needs to be released (and new players to implement it) before we’ll be able to truly tap in.
    Misconception two – it will deliver no benefit: The resolution would exceed our own visual acuity. Look back through recent history – there was a time that an 34” TV (not rear pro) was regarded as HUGE. Now 42” is small, 50-60′ is normal, and even sizes up to 84” are gaining popularity. However we’re not sitting further away than we used to. IMAX cinemas allow a much bigger picture with relatively close seating by increasing picture resolution. 4K panels and content will do the same.

    Can you suggest one way Ultra HD/4K will help the bottom line?
    There are a few opportunities for 4K to help drive business:
    Old install refurbishments: all-new hardware and possibly even new cabling.
    New 4K sales and installation requirements.
    It defers cloud based delivery methods and in-home wireless technologies (for AV), reducing the DIY plug-n-play capability of consumers. That is, the high bandwidth specialty installation of 4K sustains the need for a professional integrator, with a chance for more hardware sales.
    It will even help software (BD disc) sellers as 4K reduces the threat of downloads due to sheer file size and delivery bit rates.

    On the technical side, where will the common mistakes be made?
    Cables mislabelled: 4K is deliverable via HDMI at one fixed clock speed of 297MHz (up to 30 frames). This equates to an aggregate data rate nearing 9Gbps, which before the year is out will double again with an upcoming new HDMI spec. Although the existing ‘High Speed’ HDMI cable spec technically has this 9Gbps rate covered, many HDMI cables are possibly not accurately labelled.

    Devices simply not capable: The big ‘gotcha!’ is with devices and the HDMI silicon they contain. Currently most devices employ HDMI chipsets (transmitters & receivers) that are limited to 225MHz, or 6.75Gbps, emanating from 2006 specifications. This is clearly insufficient for 4K, even with firmware upgrades. The pipe simply isn’t big enough. Many HDMI extenders, switchers, splitters, matrix switchers etc, on the market also contain this restricted silicon, and so are not adaptable to 4K applications. Even if the silicon is upgraded, length potential will be much reduced, perhaps by more the half. CATx cable has become a favourite choice for installers for HDMI extension but 4K fundamentally challenges the limits of this cable type. Technologies like HDBaseT already address this through proprietary firmware driven timing technologies, but it’s no longer native HDMI. Matrix switchers with HDBaseT will generally still perform the cross-point switching in the HDMI space, so they may still be restricted even though the HDBaseT stage is capable of more.

    Do you have a final comment?
    4K is not only coming, it’s here. We’ll exist in a world of upscaling and some proprietary file delivery for perhaps a year or two, then things will turn very quickly to more mass-market. The challenge for the custom installer is that they are expected to pre-wire jobs for future 4K support NOW, even though they can’t yet even test what they’re putting in for validation. They will need to rely on their product suppliers and a leap of faith that the products will deliver as expected, when expected. The phrase ‘futureproof’ is scarier and more difficult to define than ever.
    The new HDMI spec will push data rates up to at least 18Gbps, driving the need for all-active connectivity and pretty much wiping out CATx cable as a viable extension cable option (other than possibly HDBaseT).

    It’s exciting times ahead with the best sales opportunities opening-up to those that learn the basics NOW and stay ahead of the curve.

  • Troubleshooting: HDMI to Component Converter

    No video/audio being outputted

    First troubleshooting question is: Are you using the converter with the source device’s HDMI video output set to 1080i, not 1080p?

    The digital to analogue processor (DAC) cannot accomodate a 1080p input signal. The component converter is 1080i pass-through conversion to component video device – it cannot actively reconfigure a 1080p input signal to 1080i.

    This is stated on the website, but some people miss it. “The HDMI to Component Converter is a Digital to Analogue (DAC) conversion device that will take a HDMI source input (up to 1080i) and output the video signal as RGB component (YPbPr).”

    Finally, always power on the system in the following order from an ‘off at the wall’ starting point.

    1. TV
    2. Converter
    3. Source

  • Comparing HD matrices on a like-for-like basis

    matrix-like-for-like

    Click here for enlarged image: matrix-comparison

    With all the technical jargon and various names given to 4K video, it’s difficult to properly compare HD matrices on a like-for-like basis. So here’s our HD matrix buyers guide to help simplify things.

     1. Ask yourself, what is the maximum resolution you want your system to support now and in the future?

    To help, you can look at the maximum resolution of your displays and / or HDMI sources that you want to connect to the HD matrix. To date, there are very few 4K sources, but lots of 4K capable displays. So you may only have 1080p sources, but 4K displays. So the choice is often if you would like 4K support from your HD Matrix or not, in order to future proof yourself for the eventual arrival of 4K capable source devices.

    To understand the resolutions in the table below in greater depth, you can click here for our more detailed 4K support article.

    Once you’ve decided on the support you’d like your HD matrix to have, you can match it off to the chipset specification required by studying the table below.

    This chipset specification can then be compared across HD matrix products. We’ve also broken the typcial chipset speeds down into levels to help make the next stage easier.

    (NB – Platinum will support all Gold resolutions, Gold will support all Silver resolutions and Silver will support all bronze resolutions.)

    Input Side Level

    Maximum Resolutions Supported

    Typical HDMI Chipset Specifications

    Platinum

    HDMI 2.0

    4096×2160 @ 60Hz 4:4:4

    600 Mhz Pixel Clock

    18 Gbits Bandwidth

    Gold

    HDMI 1.4

    3840×2160 @ 60Hz 4:2:0

    4096×2160 @ 30Hz 4:4:4

    1080p @ 60Hz 3D

    340 Mhz Pixel Clock

    10.2 Gbits Bandwidth

    Silver

    1080p @24Hz 3D

    1080p @ 60Hz

    720p @ 60Hz 3D

    165 Mhz Pixel Clock

    4.95 Gbits Bandwidth

    Bronze

    1080p @ 24Hz

    720p @ 60Hz

    1080i @ 60Hz

    75 Mhz Pixel Clock

    2.25 Gbits Bandwidth

    2. Therefore, which type of output technology do you need? 

    Next, it’s important to match your desired resolution support to an output technology level that supports that resolution. So you can match gold to gold for example from the previous table.

    Once you’ve chosen the appropriate level, there can be multiple types of output technology at the same level. So your choice between them may be based on features other than resolution capability. For a full breakdown of the different types of output technology on offer and their key features, you can read our article here.

    You can then compare HD matrices looking for the required or your chosen technology.

    (NB – Platinum technology will support all Gold technology resolutions, Gold technology will support all Silver technology resolutions and Silver technology will support all bronze technology resolutions.)

    Output Side Level

    Maximum Resolutions Supported

    Output Technology Choices

    Platinum

    4096×2160 @ 60Hz 4:4:4

    Native HDMI 2.0

    Gold

    3840×2160 @ 60Hz 4:2:0

    4096×2160 @ 30Hz 4:4:4

    1080p @ 60Hz 3D

    All Platinum Choice and:

    Native HDMI 1.4 (High Speed)

    HDBaseT-Pro (100m CATx Soltution)

    HDBaseT-Lite (70m CATx Solution)

    Silver

     

    		 1080p @24Hz 3D

    1080p @ 60Hz

    720p @ 60Hz 3D

    All Platinum and Gold Choices plus:

    Some high quality (non-HDBT) SingleWire & TwinWire 2x CATx solutions. Such as the HDAnywhere mHub.
     Bronze

    1080p @ 24Hz

    720p @ 60Hz

    1080i @ 60Hz

    All Platinum, Gold and Silver Choices.

    3. Lastly, make sure your matrix doesn’t have a bottleneck.

    A HD Matrix is most commonly made up of three main stages. The input stage, the multiplexing stage and the output stage.

    It’s vital to check that each stage of the matrix has the same chipset capability or resolution capability. Most manufacturers will list the chipset speeds they are using and will group together the input stage and the multiplexing stage. Always seek clarification if this is not clear.

    Some HD Matrices will have a Gold level input specification, but a silver level output. The result of this is that whilst you may be able to send into the HD matrix a 4K signal (such as 3840×2160 @ 60Hz 4:2:0) you cannot output it from the HD matrix to a TV. So the HD matrix does not have 4K support throughout.

    If you work through the above and check in enough detail, you should get what you expect from your HD matrix purchase.

     

  • Troubleshooting: Mixing 3D and 2D on a matrix or splitter

    In order to route 3D content easily via a matrix switch or splitter, ALL connected displays need to be 3D compatible. Even, if just one of the displays is not 3D compatible, the 3D source player will NOT output the 3D content. The HDMI handshaking process will trigger the source player to drop it’s resolution output so that all displays can show content.

    The problem is HDMI is designed such that the source ‘polls’ the EDID data (EDID is a display’s identity card stating what it’s capabilities are, a bit like a top trumps card) from all connected Sink devices (your 3D enabled display and non-3D enabled AVR) and outputs the lowest quality video signal all devices support (2D in your case).

    To ensure 3D IS routed via the Matrix Switch or Splitter, the non-3D compatible display device must not be ‘active’. Sometimes turning the display into standby will be sufficient and sometimes full power off is required.

    Essentially, the 3D source player must not be able to ‘see’ a 2D only display connected to the Matrix Switch or Splitter.

    For best results when using 3D Blu-ray – HD Connectivity recommends… not actually connecting your 3D Blu-ray (BR) player to the Matrix. As Blu-ray 3D content is generally only viewed at a single ‘main’ TV location, in this instance it is better to have a direct connection between source and display, bypassing the Matrix completely. This will avoid any potential for ‘black screen’ situations at the other TV locations. It will also ensure that absolutely the best 3D format is selected for use on that display, not a potentially reduced quality 3D format that a lower 3D-capable display, connected to the matrix can influence the 3D BR to output. (Plus wearing those massive 3D glasses all around your house is really not cool and could result in you bumping into doorframes! – Ed)

  • Using an HDMI Splitter before an AVR and Display

    Due to the way that HDMI handshaking negotiations take place between source and displays or AVR devices, the display (unless it can accept multi-channel audio and has a setting for such) will communicate with the source to only output 2.0 channel stereo. This is due to the fact that in most cases an HDTV only has 2 speakers.

    When using a HDMI splitter or distribution amp (DA) effectively you have 2 display devices competing for the source to send them the audio signal format type that they prefer. The technical rules of HDMI dictate that the lowest common denominator always wins that battle. The logic being that this rule should result in the maximum number of display devices functioning in some way. (i.e. a 7.1 capable device should still be able to output 2.0 channel stereo also, meaning both displays have picture + sound)

    Unfortunately, what you and a lot of people really want from HDMI is for a mix of audio formats to be delivered from one source, which is just not possible currently.

    Some splitters including ours can be pre-loaded with firmware where the highest denominator formats win the battle, but of course that would leave your 2.0 capable HDTV without sound.

  • Hard reset device back to factory condition

    If you have been advised to ‘hard reset’ your HDanywhere device back to it’s factory condition, please perform the following.

    A hard reset will clear any corrupted DDC, EDID or HDCP data on the device’s NVRAM memory and re-initiate the handshaking process with all the connected devices.

    Firstly we need to ensure that any manufacturer HDMI CEC link protocols are switched to “off”.

    Trade names for CEC are Anynet+ (Samsung); Aquos Link (Sharp); BRAVIA Link and BRAVIA Sync (Sony); HDMI-CEC (Hitachi); E-link (AOC); Kuro Link (Pioneer); CE-Link and Regza Link (Toshiba); RIHD (Remote Interactive over HDMI) (Onkyo); RuncoLink (Runco International); SimpLink (LG); HDAVI Control, EZ-Sync, VIERA Link (Panasonic); EasyLink (Philips); and NetCommand for HDMI (Mitsubishi)

    To perform the hard reset:

    Power down every device in the set-up – that’s all sources, all displays and the device itself. Leave off at the mains for 10 to 15 minutes.

    Now switch all connected display devices on and select the HDMI channel on those displays.

    Power the device back on at the mains.

    Now one by one, power on the source devices, starting with input 1, input 2 and so on. If you are using a cable/satellite receiver such as Virgin or Sky+HD, please ensure that this is connected to input 1, not input 2. Please note that Sky HD boxes take around two minutes to fully reboot.

    After a few seconds everything should have synced and shaken hands correctly and normal operation should resume.

    If the problem still persists, Contact Customer Services. for further troubleshooting advice.