4K / UHD Test Pattern & Sequence Generation

Video test patterns and audio tones have always been used to ensure that equipment is setup and working correctly. Inserting known test patterns and audio tones into the start of the equipment chain and ensuring that you get the same at the end of the chain.

This long-established method has worked successfully for HD-SDI and 3G-SDI but with UHD / 4K, come a range of new link types and a new colour space, that require new test patterns and sequences to ensure that everything is working correctly.

 

 

Colour bars, multiburst and ramp may show that the static image path is working correctly. However, moving test patterns or sequences are necessary to check for encoding, compression and temporal artefacts in each link. This is especially important if existing infrastructure is being adapted for quad link 3G-SDI applications. A temporally changing test pattern sequence will show up artefacts in the image that would otherwise go unnoticed.

With UHD / 4K comes the potential for far more audio channels and the greater chance of channel configuration issues. With codes of practice for conversion between different link types not yet established, a fully configurable audio test tone generator is a requirement to check the correct levels and channel assignments.