Articles
Managing Technological Change
Alan Wheable Continual technological change in the broadcast and media industries can make it difficult to plan for the mid to long term. Typically, broadcasters and media organisation are still implementing the last set of changes to working practices when the next changes come along.
Tags: iss133 | omnitek | ip | waveform | vectorscope | ultra tq | Alan Wheable
Contributing Author Alan Wheable Click to read or download PDF
Listening to the needs of audio engineers
Alan Wheable Monitoring SDI video content within an installation is and has always been straight forwards. If you have a monitor, and you can see the image correctly, all is well. This is not necessarily the case for metadata and especially not for audio.
Tags: iss131 | omnitek | audio monitoring | aes | ebu | smpte 2110 | st2110 | smpte 352 | dolby | Alan Wheable
Contributing Author Alan Wheable Click to read or download PDF
Technological advances in the broadcast industry
Alan Wheable Since it is Omnitek’s 20th anniversary this year, I thought it would be interesting to look back over the technological advances in the broadcast industry over the last few decades and look at the similarities between then and now.
Tags: iss130 | omnitek | test and measurement | smpte 2110 | untra tq | 2022 | sdi 2022-6 | Alan Wheable
Contributing Author Alan Wheable Click to read or download PDF
Supporting broadcast quality control
Alan Wheable With the ever-increasing number of program channels and range of different program distribution formats, the process of ensuring program quality has become a complex one for contribution/capture, production, post production, server ingest and content distribution.
Tags: iss128 | omnitek | wcg | hdr | test and measurement | smpte 2110 | smpte 2022-6 | Alan Wheable
Contributing Author Alan Wheable Click to read
Peace of mind in a complicated world
Alan Wheable For many in the broadcast industry these are challenging times. With competition coming from all angles and different technological camps advocating different approaches to infrastructure and the way forwards. With the number of different variables increasing, the choices of whether to use SDI or IP infrastructures, and the choices around HDR and WCG let alone the on-going distraction of UHD / 4K.
Tags: iss127 | omnitek | smpte 2110 | ip | ultra tq | 2022-6 | Alan Wheable
Contributing Author Alan Wheable Click to read
The importance of a low noise floor
Alan Wheable 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
Contributing Author Alan Wheable Click to read
Waveform Monitors in 4K Production
Alan Wheable Waveforms have always been one of the essential tools for anyone working in the video industry and are used for level alignment, grading and quality control to touch on just a few areas.
Tags: iss112 | Waveform Monitors | 4K | UHD | Alan Wheable
Contributing Author Alan Wheable Click to read
Staying within a recognisable landscape
Alan Wheable 2015 saw the maturing development of UHDTV 4K signal technologies and a growing agreement that both SDI and IP will exist in their respective strong application areas, as a solid engineering solution to the differing requirements of live signal handling and programme contribution.
Tags: iss110 | omnitek | uhdtv | 4k | 12g-sdi | eyepattern | Alan Wheable
Contributing Author Alan Wheable Click to read
Test & Measurement: Ask the expert
Alan Wheable There are basically two different approaches to capturing the Eye Diagram from an SDI signal. These are real-time capture (employed by Real Time oscilloscopes) and signal subsampling (employed by Sampling oscilloscopes such as the Omnitek Ultra 4k Tool Box). All broadcast T&M equipment will use one of these approaches to create the Eye Diagram using a variety of proprietary techniques.
Tags: iss107 | test and measurement | sdi | data | potholes | monitoring | anchillary data | uhd | 4k | test pattern | jitter meters | eye diagram | Alan Wheable
Contributing Author Alan Wheable Click to read
Remote control and monitoring
Alan Wheable You might wonder what remote control has to do with test and measurement. And you might be pleasantly surprised when you find out.
Tags: iss083 | remote control | phabrix | monitoring | test and measurement | equipment | explained | guide | Alan Wheable
Contributing Author Alan Wheable Click to read
Demystifying the black art of digital audio
Alan Wheable At the pure analogue end of the audio world (which these days is very narrow with much of the audio content being captured digitally) it is quite straight forward to check that an audio channel is present, that it sounds right and has the right levels. Likewise if the audio channel has hum or a buzz on it is relatively easy to identify the problem and fix it.
Tags: iss079 | phabrix | dolby | formats | common media distribution | guide | sound | 5.1 | digital plus | Alan Wheable
Contributing Author Alan Wheable Click to read
Total Articles: 11 [1-11]