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MONITORING Taming the 12Gbs beast and how to T&M it with the Qx by Philip Adams and Paul Nicholls T he one thing you can say about working in the broadcast industry is that there isn’t time to get bored! Hesitant, perhaps even frightened these days might be more accurate but bored, certainly not. Such is the case with the planned UHDTV roll out and the need for customers to invest in technology which will adapt as the technologies, proposals and standards evolve. For a company like PHABRIX the hiatus created by customers deciding where to HDTV2/8k place their investment money has produced a significant opportunity UHDTV2 Option but also a problem: How to meet UHDTV1 Option the evolving requirements of an industry with a suitably forward Standard looking adaptable product available now! The step from ‘full HD’ to ‘UHDTV’ is a very significant one. Current proposals see this as a three phase development. This phased approach is necessary due to the very significant technical hurdles at each stage. Phase one has begun, however ultimately UHDTV will provide a user experience incorporating: • Higher spatial resolution: UHDTV1 (3840 x 2160), UHDTV2 (7680 x 4320) • High Dynamic Range (HDR): camera and display technology taking the user experience from the current display technology reference luminance of 120 cd/m² to over 10,000 cd/m² • High frame rates (HFR): 100/120Hz frame rates • Wide Colour Gamut (WCG): A new colour space: Rec. 2020 with twice the CIE 1931 colour space area as ‘full HD’ (Rec. 709) • A new audio experience with opportunities for object based audio, 96 kHz sampling, and up to 22.2 surround sound A quick scan of the table of UHDTV standards below gives a feel for the video payload requirements associated with UHDTV. Video Payloads Associated with UHDTV UHDTV1/4k Table Entries: Video Payload (Gbps) (Number of 12Gbps links required) Handling these payloads alone and providing instrumentation is a difficult enough task. Add to this the complications of supporting coaxial SDI to 12Gbps, optical SDI to 12Gbs and 10G Ethernet with or without compression and the challenge is significant. Timing is another factor. Technologies move on and the chipsets of 2012 by Moore’s Law are nowhere near a match for those available in 2015. A number of the key components utilized in the Qx only became available in February this year and despite our considerable IP evidenced in existing products a lot of development work has been required in order to 64 | KITPLUS - THE TV-BAY MAGAZINE: ISSUE 107 NOVEMBER 2015