is an ideal means of providing robust and reliable connectivity to any TV or room that is connected to a legacy terrestrial TV system. EoC in MDU. In a typical block of apartments with an existing IRS system in place, the G.hn signal can be fed into a coaxial network via the passive terrestrial antenna input on a multi- switch (must be passive and capable of passing 2-200 MHz) and the EoC signal would then be available in all connected flats (Figure 4).
reliable and robust connectivity without loss of speed or bandwidth. With CAT6 for example, a Gigabit can be maintained up to around 90m which is adequate for most domestic environments, but what if you need to get connectivity to an outbuilding over 90m away or you cannot run a new Ethernet Cable for some reason? Perhaps the customer does not want the mess or disruption to their property that would be involved in running in that new ethernet cable, or there is no discrete way to route it. This is where EoC is the perfect solution. No drilling, no mess and an instant, reliable and robust Gigabit network to their home in minutes and capable of delivering a Gigabit up to 500m. (Figure 3) The figures in the above table are based on attenuation levels when using good quality type 100 cable, and although 500m is not likely to be required in a domestic setting, the point to note is that the attenuation level at that distance is around 40 dB in the EoC G.hn frequency range of 2-200 MHz. This demonstrates that even when using older existing cables in a property, which may be poor quality, with high attenuation levels, EoC will still perform as intended over what are generally shorter distances. It should also be noted that TV services are unlikely to travel the same 500m and above. EoC functionality at these distances is really intended for Data only applications and as you can see from the table, you can still achieve around 50 Mbps after 1 km of coax.
Figure 4: EoC System with DVB-S (Passive Terr)
Where an existing Coax Network has an amplifier or other component that will not pass 2-200 MHz then a bypass filter can be used to separate the TV and G.hn signal to allow the G.hn signal to bypass the amplifier unhindered and then re-combine the G.hn signal with the TV signal back into the coax network on the other side of the filter. EoC has for many years been successfully used in hotels, hospitals, camp sites and nursing homes – in fact anywhere there was an existing coax network in place. A typical EoC system will
As the reception of TV in the Home moves ever closer towards a streaming future, EoC
Figure 3
70
CAI Feedback Spring 2024
Made with FlippingBook - Online magazine maker