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The importance of a low noise floor
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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. |
| Tags: iss119
| omnitek
| test and measurement
| intrinsic jitter
| Alan Wheable
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The FAQs on automated quality assurance
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The transition from tape-based to file-based video and audio recording allowed a completely new approach to the business of checking that programmes and interstitials conform to broad-cast industry standards prior to transmission. The Vidcheck team designed the world's first au-tomated broadcast quality control product. We have been working on file-based content analy-sis and repair since 2003 and are probably the most experienced and innovative team active in this area. Our flagship solution is Vidchecker. The following short article addresses some of the questions most commonly fielded by potential customers. |
| Tags: iss116
| vidcheck
| vidchecker
| test and measurement
| Thomas Dove
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The beat goes on... 4k, 8k and the continual need for T&M
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Just a few short years ago, 4k was the future, but now that 4k televisions and other screens are becoming more widely available, the format is careening toward the present. 4k is still an emerging delivery format, to be sure. After all, there are still places in the world that have yet to transition from SD to HD. But progress marches on. Even as were in the process of adopting and perfecting 4k production equipment, methods, and content delivery, were looking toward doing the same with 8k video, with certain large-audience events and special venue applications as a starting point. |
| Tags: iss107
| 4k
| 8k
| test and measurement
| sd
| hd
| video
| delivery networks
| vod content
| tv
| voice
| data
| Adam Schadle
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Evolving Test and Measurement
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Time and accuracy are vital when producing content for broadcast. All broadcasters have strict schedules to work to, as well as visual and audio standards that need to be met. Effective testing and measurement (T&M) of any material that is to be transmitted is key to ensuring these parameters are adhered to, for both producer and broadcaster; get these wrong, or trust in inadequate equipment, and it could be very costly. |
| Tags: iss067
| test and measurement
| s3d
| pse
| itu 1770
| itu 1771
| N/A
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On the level
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In shooting 3D you naturally have two cameras and two lenses: albeit, there are some weird and wonderful single lens/single sensor contraptions out there. This usually means there are any number of ways each camera lens combination could be producing images with minor are major signal level differences. If these level differences are not dealt with on-set or in post-production, they could lead the visually objectionable artefacts in 3D portrayal. |
| Tags: 3d
| iss054
| camera filters
| dual stream
| monitoring
| test and measurement
| cel-scope
| cel-soft
| N/A
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The Real Cost of Calibration
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Calibration is the cornerstone of measurement confidence. Badly calibrated instruments are liable to produce measurement errors which can then propagate throughout an enterprise and even to the end-users product¦ and beyond! This can have a detrimental effect on a companys reputation and profits, and could even have legal implications.
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| Tags: tektronix
| test and measurement
| calibration
| iss039
| N/A
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