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REVIEW - Hollyland MARS 400S PRO Digital Wireless Transmi...

HOLLYLAND MARS 400S PRODigital Wireless Video Transmission SystemBuilt by Hollyland and costing around £600 the Mars 400S is an easy-to-use wireless video transmitter/receiver system – it will be right up the alley of anyone who, like me, considers an instruction manual to be nothing more than box padding. The body is made of metal as opposed to...

Submitted by Phil Vinter

Published 12 February 2021

Testing Hybrid Workflows

‘As hybrid workflows that bridge the IP and SDI worlds become the norm, test and measurement tools that support hybrid environments become increasingly more important’ says PHABRIX’s Martin Mulligan, SVP Sales and Operations. With the industry’s steady migration from traditional HD-SDI to IP and/or 12G-SDI infrastructures, broadcasters are now face...

Submitted by Martin Mulligan

Published 03 November 2019

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

Scopes, a creative trilogy

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. At the core of color correction is tonal range: the range of brightness from dark (black) to light (white). When t...

Submitted by Paul Issacs

Published 07 December 2016

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

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

Sony PXW-FS5 Review

by Alister Chapman Issue 106 - October 2015 I was lucky enough to get some hands on time with a prototype FS5 in Amsterdam at IBC. In case you havent heard about it, the PXW-FS5 is a compact interchangeable lens, super 35mm camcorder from Sony that can record in HD or UHD 4K. It shares many of the features of the already incredibly popular PXW-FS7...

Submitted by Alister Champman

Published 01 November 2015

On-camera monitors for today and tomorrow

by Paul Isaacs Issue 102 - June 2015 1) Why is monitoring so important for productions?Image quality is a central concern for users of any video product, so monitoring should be one of the foremost considerations for cinematographers and videographers. Along similar lines, the ability of consumer televisions and a range of personal devices to displ...

Submitted by Paul Issacs

Published 01 July 2015

How to read Video Scopes

by Larry Jordan Issue 98 - February 2015 Understanding what video scopes tell us about our images is essential to creating great looking images; regardless of which video editing software you are using. In this article, I want to explain the basics of video scopes and how to read them. A QUICK BACKGROUNDEach video image is composed of pixels, small...

Submitted by Larry Jordan#

Published 01 March 2015

Sony PXW-FS7

by Alister Chapman Issue 94 - October 2014 At IBC Sony launched a new camera. In fact Sony launched several new cameras. This is nothing new, every year Sony launch cameras. But this year Sony really created quite a stir with one camera in particular, the Sony PXW-FS7. So what is it about the FS7 that is so special? Looking at the specs alone this...

Submitted by Alister Champman

Published 01 November 2014

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

Metering in the age of loudness: Keeping things on the le...

By Martin DysterThe new age of production and post production for HD broadcast has gotten more complicated with the advent of legislation and guidelines concerning the relative loudness between different programs, channels and, especially, commercials. With ATSC A85 in place in the U.S., EBU R128 covering the members of the European Broadcasting Un...

Submitted by Martin Dyster

Published 01 February 2013

Technical Testing Joins Forces with Visual Monitoring

In the past, test and measurement equipment was designed exclusively for broadcast engineers. Vectorscope and waveform read-outs sketching out shapes on a scope were readily understood by technicians fluent in the language of signal analysis. Today multi-camera digital acquisition is not merely the domain of the broadcaster; television production i...

Submitted by Kieron Seth#

Published 01 December 2012

The highs and lows of histograms

Histogram displays for video analysis probably followed those found in common computer graphics programs such as Adobe Photoshop. This can be very useful in finding video signal problems that would be difficult or impossible to see with a conventional waveform display. The histogram is a way of showing statistical results as a bar-chart. The range...

Submitted by Kieron Seth#

Published 01 December 2012

Testing times of a 4K world

The term '4K' applies to some five slightly different picture formats with around 4,000 pixel horizontal resolution: all much bigger than HD. In fact roughly four times the total pixels required for 1920 x 1080 pixel high definition. 4K has been around for some years but was until recently only affordable by producers with mega budgets. Advances in...

Submitted by Will Strauss#

Published 01 August 2012