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Filtered Tag: tektronix (25 results)

Back to Basics with IP Video Production

Its difficult to attend an industry tradeshow or read a publication without seeing discussions about the technological changes that will impact the broadcast market in upcoming years. These changes include 4K/UHDTV, High Dynamic Range and High Frame Rate video but the transition to an all IP video workflow is regarded as a disruptive technology cha...

Submitted by Michael Waidson

Published 19 October 2017

Cause and effect of jitter in an operational IP video net...

What are the advantages of moving to an IP infrastructure? The most commonly cited advantage of deploying IP Video networks in production and other operational applications is the ability to use Commercial Off-The-Shelf (COTS) IT-based infrastructure, which takes advantage of the economies of scale of the IT industry when compared with the relative...

Submitted by Paul Robinson

Published 07 December 2016

Taming the 12Gbs beast and how to T&M it with the Qx

by Philip Adams and Paul Nicholls Issue 107 - November 2015 The one thing you can say about working in the broadcast industry is that there isnt time to get bored! Hesitant, perhaps even frightened these days might be more accurate but bored, certainly not. Such is the case with the planned UHDTV roll out and the need for customers to invest in tec...

Submitted by Phillip Adams

Published 01 December 2015

Ask the experts: Content readiness in time-deferred workf...

by Sudeep BoseIssue 79 - July 2013 What are the fundamental considerations that must be addressed to ensure the quality of non-real-time content, whether played out from a broadcasters media server or time-shifted for VOD and other OTT services?When focusing on the actual content itself, rather than the service, network or other components, the key...

Submitted by Sudeep Bose

Published 01 August 2013

Why test and measurement is for real life, not just for e...

by Will StraussIssue 79 - July 2013 Thanks to its long-standing association with virtually incomprehensible acronyms, dark machine rooms and (lets face it) engineers with unruly beards, the subject of Test and Measurement (T&M) always gets a bit of bum rap. Yet, for all the pre-conceptions, it is a hugely important part of the production and broadc...

Submitted by Will Strauss#

Published 01 August 2013

Handheld T and M the broadcast emergency service

“Test and Measurement”. Shudder. Like “Health and Safety”, “Bus” and “Replacement Service” or “Keith and Orville” it’s a collocation of words that fills me with dread. Seriously, who wants to read about “Test and Measurement”? Well, as it turns out, the answer is: quite a lot of people. Because, despite its lack of glamour, it is hugely important....

Submitted by Will Strauss#

Published 01 August 2012

So what is Digital Television. Part 3

Last month Richard described moving forward from analogue to Digital video. This month he covers Gamma and conversion difference…Gamma correctionAn analogue factor to be considered in the handling of the video signal is the perception that the video display is accurately reproducing the brightness of each element of the scene. The Cathode Ray Tube...

Submitted by Bob Pank#

Published 01 September 2011

So what is Digital Television. Part 2 - Back to Basics

Component digital videoThe designers of early analogue special effects equipment recognized the advantage of keeping the red, green, and blue video channels separate as much as possible during any processing. The PAL and NTSC encoding/decoding process is not transparent and multiple generations of encoding and decoding progressively degrade the sig...

Submitted by Kieron Seth#

Published 01 August 2011

So what is Digital Television - Part 1

It is tempting to think of “digital television” as something very scientific and even complex. But when we view the end result, we find something very familiar; something television engineers have sought since the very beginning…an experience that just keeps getting better and better…quality video and audio conveying great entertainment, sport, mov...

Submitted by Bob Pank#

Published 01 July 2011

Whats new in broadcast test and measurement

The test and measurement product category continues to expand as the broadcast business itself diversifies. Notable recent developments include higher resolution displays and a gradually increasing number of analysers which, having detected a fault, endeavour to fix it. No sign at NAB 2011 of any tablet-based test and measurement equipment but perh...

Submitted by Bob Pank#

Published 01 July 2011

The Real Cost of Calibration

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-user’s product… and beyond! This can have a detrimental effect on a company’s reputation and profits, and could even have legal implications. The best w...

Submitted by Bob Pank#

Published 01 April 2010

Eye to Eye: Whats even newer in test and measurement 2010

A year is a long time in broadcast test & measurement, which is just as well because that is when this column previously focused on it. Given the current push to establish 3D as a permanent feature of the broadcast landscape, one might reasonably expect T&M kit designers to be heading along the same road. Hamlet and Omnitek certainly are but it see...

Submitted by Bob Pank#

Published 01 April 2010

A Guide to Testing IPTV: Technologies and Challenges Par...

Testing IPTV NetworksThe Technology LifecycleThe deployment of new technologies tends to follow a similar lifecycle that begins with early research, development and standardisation and ends with full deployment and service management. The lifecycle diagram illustrated in Figure 5 shows a number of different technologies moving through the design an...

Submitted by Dennis Lennie

Published 01 November 2009

A Guide to Testing IPTV: Technologies and Challenges Par...

Before we can go on to look at testing IPTV systems, it would be useful to provide an overview of the technologies involved. Network ArchitecturesFigure 3 shows an example of a typical IP network structure. Content is first delivered into the video headend; this can be done in a variety of formats over a number of different delivery mechanisms (e.g...

Submitted by Dennis Lennie

Published 01 October 2009

Guide to Testing IPTV Technologies and Challenges Part 2

In Part 1 of this series we gave a background to IPTV and explained that the two-way nature of IPTV networks offers many advantages over traditional broadcast technologies, but also presents a number of technical challenges. In this part we will begin to examine some of the challenges faced by IPTV service providers, and the importance of Quality o...

Submitted by Dennis Lennie

Published 01 September 2009