It's actually a more difficult question than you think. When I ask the majority of engineers this question, I will get a technical answer. It will be something like "to be sure we meet the specification" or "to be sure we don't put bad signals on air" or "so that I don't get fired for getting loudness wrong"
The Noise Floor of a piece of T&M equipment is the inherent noise (or intrinsic jitter) introduced by the equipment itself. The level of inherent noise affects the accuracy and repeatability of jitter measurements that can be made, especially when measuring low levels of jitter. With the permitted 100KHz jitter on a 12G-SDI signal being only 0.3UI, it is important to establish the total level of jitter in the signal path to ensure that it does not exceed this limit and cause data errors.
The purpose of color correction is to fix any problems with exposure and color, ensuring the final image looks right. Color grading is used to set the mood by adjusting the colors of the video imagery to achieve a certain look or feel.
After decades of operating within the same fundamental model, the walls around our world - what was the broadcast world, or "vertical", in marketing terms - are crumbling. NAB 2016 clearly showed this and IBC 2016 took it one step further: momentum is strengthening as we push towards an IP future.
Broadcasters are not newcomers to technological transitions. As an industry, we've survived analogue to digital, baseband to file-based workflows, SDTV to HDTV and now 4KUHD resolution, not to mention weathering a barrage of new compression formats.
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