Articles

Articles, opinion and reviews from the industry. It is free to add your own articles, just login / register and follow the links in your KitHub panel.

Filter By Popular Tags

All

Articles by Alan Wheable

The way forward in a changing world

The broadcast and media industries are evolving in all areas to adapt to the challenges of competition from OTT, changing user viewing habits, technological advances in image resolution, dynamic range and colour rendition as well as embracing new video over IP infrastructures. Test and measurement equipment manufacturers also have to evolve to supp...

Submitted by Alan Wheable

Published 21 March 2019

Test, Measurement and Standards

Who are AIMS?The Alliance for IP Media Solutions (AIMS), is a non-profit trade alliance that fosters the adoption of one set of common, ubiquitous, standards-based protocols for interoperability over IP in the media and entertainment, and professional audio/video industries. The members of AIMS are a group of like-minded industry manufacturers who...

Submitted by Alan Wheable

Published 25 January 2019

Managing Technological Change

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. Display manufacturers and viewer expectation help drive the different techno...

Submitted by Alan Wheable

Published 08 September 2018

Listening to the needs of audio engineers

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. Assuming a SMPTE 352 payload packet is present on the SDI signal, this metadata determines how the video co...

Submitted by Alan Wheable

Published 07 June 2018

Technological advances in the broadcast industry

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. When I started work in the Broadcast television industry in 1975, video was analogue (with only 3 of 4 formats to worr...

Submitted by Alan Wheable

Published 26 March 2018

Supporting broadcast quality control

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. Add to this the complexities of HDR and WCG gamut, it is essential to ensure that the...

Submitted by Alan Wheable

Published 02 November 2017

Peace of mind in a complicated world

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 W...

Submitted by Alan Wheable

Published 19 October 2017

The importance of a low noise floor

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,...

Submitted by Alan Wheable

Published 07 December 2016

Waveform Monitors in 4K Production

by Alan Wheable Issue 112-April 2016 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. Working with HD and 3G-SDI waveform technology may have been a solution in the early days of UHD/4k to display the waveforms f...

Submitted by Alan Wheable

Published 25 April 2016

Staying within a recognisable landscape

by Alan Wheable Issue 110 - February 2016 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. While the apparent panacea...

Submitted by Alan Wheable

Published 16 March 2016

Test & Measurement: Ask the expert

by Alan Wheable Issue 107 - November 2015 What should an Eye diagram look like?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 broadcas...

Submitted by Alan Wheable

Published 01 December 2015

Remote control and monitoring

by Alan WheableIssue 83 - November 2013 Remote Control and MonitoringYou might wonder what remote control has to do with test and measurement. And you might be pleasantly surprised when you find out. For a number of years now, manufacturers of broadcast equipment have used remote controlled test installations to allow them to test systems and modul...

Submitted by Alan Wheable

Published 01 December 2013

Demystifying the black art of digital audio

by Alan WheableIssue 79 - July 2013 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 rela...

Submitted by Alan Wheable

Published 01 August 2013