HDMI Distribution

Get the best quality HD Video and Audio signal to all the TVs In your home with  High Definition Network Installation.

Technology has exploded over the past few years , Flat screen TVs have become a lot cheaper allowing  people to have multiple displays in their Homes. The Price of a 55 inch TV is the same price as a 32 inch TV was a few years ago . we have gone from SD  to 720p, 1080i,1080p FullHD now to 4K with 8K coming soon. The downside of this is that a good quality signal  is now required coax is no longer sufficient. This High Definition Video and Audio requires so much bandwidth newer cables were required HDMI.

Advantages of HDMI:

  • Higher Quality: HDMI enables loss-less transmission and better quality video at low brightness scenes at higher resolutions. So, the video quality is much better than their analog counterparts as there is no conversion involved either. High contrast details like text etc. are displayed more sharper.
  • Intelligence: Two way communications between video sources are enabled by HDMI Interface, which enables automatic configuration (between 480p or 720p, 16:9 or 4:3 for example). So, external intervention to identify the best resolutions and audio formats is minimized. This is accomplished by using a standard known as EDID – Extended Display Identification Data.
  • Authentication and Encryption: HDMI standard supports authentication to ensure that the devices are authorized to receive the content sent by the HDMI enabled sources. They also enable authentication to make sure that people cannot tap in to the cables to copy or pirate content sent through them.
  • Signal Integrity: They enable digital signals to be stored, transmitted and viewed without changes from the original (unlike other media which require analog to digital conversion) and hence the signal degradation is not prominent. So, it is better to transmit HD content.
  • Single Cable: This is truly a single cable solution as there is only a single cable that carries audio, video and control information. So, the complexity of implementing an audio video control system is lesser.
  • Deep Colours: HDMI supports 10 bit, 12 bit and 16 bit (RGB or YCbCr) colour depths which can render over one billion colours in good detail.
  • No Compression: Since HD signals are not compressed while transmission, there is no de-gradation in signal quality.
  • Compatibility with DVI: Since it is backward compatible with DVI interface, DVI enabled PC’s can send HD content to display devices.
  • Supports multiple audio and video formats: Multiple audio and video formats like standard stereo, multi channel surround sound, 720p, 1080i, 1080p, NTSC, PAL etc. are supported by HDMI standard.
  • Hot Plug Detect: The sink device (display unit) can indicate its presence to a source with a hot plug detect signal to identify when a cable has been connected and to start authentication.
  • CEC: Consumer Electronics Control is a communication link that enables devices connected via HDMI to talk to each other. For example, multiple DVD players from a single manufacturer can communicate with each other so that only one plays at a time. Some video sources can also send a power-off signal to turn off certain displays connected to it.
  • Display port compatibility: Display port is a parallel technology for audio/video interface like HDMI and HDMI devices are compatible with Display Port interfaces.
  • Dolby/DTS: HDMI supports Dolby/DTS-8 channel audio streams for highest quality.

Dis-advantages of HDMI:

  • Distance Limitations: Maximum distance for HDMI Cat1 cables is up to 35 meters (approx) for full capacity and maximum distance for HDMI Cat2 cables is up to 10 meters (approx) for full capacity. Beyond this limit, they need extenders. There are extenders like UTP cable extenders for HDMI, HDMI cable extenders, Fiber extenders for HDMI and Coaxial extenders for HDMI. Even Switches, Distribution amplifiers, audio/video processors act as repeaters. But extending HDMI cables this way has its limitations.
  • Switching Delays: Sometimes, blank screens can be caused due to authentication delays. There can also be screen flashing errors.
  • Field Termination: There are limitations to field terminations of HDMI cables. They cannot be easily terminated in the field like their analog counterparts.
  • Costly: HDMI cables are more expensive (per meter) than their analog counterparts.
  • Multiple locations: They are difficult to run in multiple applications spanning various locations. There are more complexities in such situations than just the distance limitations.
  • EDID: One such complexity is with EDID (Extended Display Identification Data) which is used in automatic identification of resolutions and audio formats. Both HDMI and EDID specifications offer limited guidance in multiple location deployment scenarios.
  • CEC: The Consumer Electronic Format which enables the different devices to talk to each other becomes a problem when there is a central control system to control all the connected audio/video devices. It causes confusion when the devices themselves change their configuration as they might get undetected by the control systems.
  • Multi-Channel Audio: While HDMI sources can transmit multi-channel audio sources, they cannot transmit multi-channel and standard two channel stereo signals at the same time (simultaneously). This becomes a problem with multi-room installations that has various devices supporting different audio formats.

Sometimes a tv maybe too far from the source an extender over Cat6/7 is required to fix this situation.


HDMI extenders

These are baluns that enable us to convert the HDMI signal to a signal that can be run over inexpensive flexible CAT5/6/7 cables. The quality and category of cable depends on the required distance and switching speeds. These cable types are considerably cheaper than HDMI cables making longer runs more economical. Cat5/6/7 cables are flexible and can be cut to length, so they are fairly easy to pull through pipes and conduits from source to output making installation somewhat easier. By utilizing good quality HDMI converters and good quality Cat5/6/7 cables we can extend your HDMI signal to 100m, which is sufficient distance for most homes and HDMI network installations


HDMI SPLITTERS

A HDMI Splitter will split the signal from a single source device to facilitate simultaneous connection to multiple displays. The output signal will be an exact clone of the original. Also, each HDMI Splitter features an integrated signal amplifier to ensure the longest transmission distance possible. It is also important to note that since HDMI transmits via a pure digital signal path, there will be absolutely no loss of quality. A HDMI Splitter will also negotiate the connection much like the source device would if it was connected directly. This means it will utilize EDID (Extended Display Identification Data) to ensure the correct resolution is automatically selected. The HDMI Splitters that we have available will also offer a secure HDCP (High-bandwidth Digital Content Protection) connection. This is important as it makes these units compatible with a wide variety of consumer level devices available today. Some examples of compatible devices include Blu-ray players, HD TV’s, gaming consoles and Foxtel etc.


HDMI Matrix Switches

These devices offer the best of both worlds. A HDMI Matrix Switch combines a HDMI Splitter and a HDMI Switch into a single unit.

With reference to the above, these devices are a great solution to expand on the available HDMI inputs but also serve to split the signal to multiple displays. These units offer extreme versatility as the connected source devices can be selected in any combination to each of the connected displays (this can be a different source for each display or the same source can be shared among multiple displays).  A remote control is supplied with each unit to make selecting the desired combination easy. A button is also located on the main unit to enable source device selection through manual pressing of this integrated button.


HDMI Switches

A HDMI Switch provides the ability to connect multiple source devices to a single HDMI input.

Each source device is connected to a numbered input on the switch. The preferred source device can then be selected by remote control or by a button located on the unit, which is then routed out the single HDMI output on the switch which is then connected to the display.

The drawback with older model displays is that they often don’t offer enough HDMI inputs. With our ever evolving collection of technology, it is not uncommon to find yourself with more devices than inputs available. These units act much like the AV switches of last generation, with the excpetion that a HDMI Switch will offer a secure digital path ensuring absolutely no quality is lost from source to display.

Depending on your preference, we offer models with and without an auto switch feature. This feature means that provided the other devices are powered off, the HDMI Switch will automatically switch over to the active device.

All the HDMI Switches that we have available are supplied with a remote control. The 3 in 1 out (3×1) HDMI Switches do not require a power supply as they utilise the 5 volt power provided by the input HDMI connection. The 5 in 1 out (5×1) These may require a 5v PSU.


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