The importance of measurements for eye and jitter


‘If it hasn’t got eye and jitter measurements, it’s about as useful as a chocolate teapot’ recalled Paul Nicholls, PHABRIX sales and marketing manager.
‘This was one comment made by a prominent broadcast engineer that stuck with me when we began to research the critical toolset required on the new eye and jitter PHABRIX SxE’.
Having taken this to heart, PHABRIX made automated measurements for eye and jitter parameters a prominent feature in the development of its new PHABRIX SxE which began shipping in volume just prior to IBC2009.

This laboratory accurate new hand held instrument benefits from a physical layer eye and jitter toolset combined with the generation and analysis features of its highly successful sibling, the PHABRIX SxA. Both support 3G-SDI, HD-SDI and SD-SDI as standard across the feature-set along with AES in/out and 16 channels of embedded audio – quite a punch for a single portable unit.
Applications for the SxE can be found across a whole range of broadcast activities from studios, transmission stations and large broadcast installations through to broadcast equipment manufacturers R&D, test, and support departments.

Areas of use include commissioning, fault finding and confidence testing within the broadcast chain. OB operators in particular will appreciate the compact nature of the instrument enabling them to test in confined areas where signal integrity is essential.

All physical layer measurements are automatic and displayed simultaneously on the Eye display. This screen provides the engineer with a quick go/no-go indication that the signal meets the relevant SMPTE physical layer specifications for SDI. Measurements include eye amplitude, rise time, fall time, rise/fall difference, rising edge overshoot, falling edge overshoot, alignment/timing jitter and approximate cable length. These automatic, accurate measurements can be logged against alarm parameters for extended periods of time with the results available in a log file for later reference.
An additional Jitter display provides experienced engineers with the tools required to help understand the nature of any eye modulation or jitter present. These include amplitude and timing histograms, decade filters (10 Hz, 100 Hz, 1 KHz, 10 KHz and 100 KHz), cursors and eye acquisition control.

Finding the source of jitter in a system is where the PHABRIX SxE excels using hardware and software algorithms usually associated with very expensive bench-bound equipment. Timing and amplitude histogram displays provide the user with useful statistical information and are the engine behind the automatic measurement system.

Having won several prestigious awards at IBC this year for the SxE, UK based company PHABRIX picked up a successive IABM award to add to last years’ prestigious Peter Wayne IABM award for design and innovation. Selling at a fraction of the cost of equivalent performance instruments the SxE is a ray of light in these times of economic gloom.

Tags: iss034 | test and measurement | phabrix | eye and jitter | N/A
Contributing Author N/A

Article Copyright tv-bay limited. All trademarks recognised.
Reproduction of the content strictly prohibited without written consent.

Related Interviews
  • Phabrix RX2000 at NAB 2013

    Phabrix RX2000 at NAB 2013

  • Phabrix at BVE 2012

    Phabrix at BVE 2012

  • Phabrix at IBC2011

    Phabrix at IBC2011

  • Sencore at IBC2011

    Sencore at IBC2011

  • Leader at IBC2011

    Leader at IBC2011

  • Murraypro at IBC2011

    Murraypro at IBC2011

  • Hamlet at IBC2011

    Hamlet at IBC2011

  • Tektronix at IBC2011

    Tektronix at IBC2011

  • HDR and BT Sport with Phabrix at IBC 2019

    HDR and BT Sport with Phabrix at IBC 2019

  • Updates to QX from Phabrix at IBC 2019

    Updates to QX from Phabrix at IBC 2019

  • 2110 with the QX Platform from Phabrix at NAB 2019

    2110 with the QX Platform from Phabrix at NAB 2019

  • SMPTE 2110, UHD and HDR solutions from Phabrix at NAB 2019

    SMPTE 2110, UHD and HDR solutions from Phabrix at NAB 2019

  • QX Hybrid 2110/12G-SDI UHD Rasterizer from Phabrix at IBC 2018

    QX Hybrid 2110/12G-SDI UHD Rasterizer from Phabrix at IBC 2018

  • PHABRIX QXIP support for SMPTE 2110

    PHABRIX QXIP support for SMPTE 2110

  • QX Updates from Phabrix at NAB 2018

    QX Updates from Phabrix at NAB 2018

  • SX, RX and QX range updates from Phabrix at NAB 2018

    SX, RX and QX range updates from Phabrix at NAB 2018

  • HDR, 12G, 4k, IP - the range expands from Phabrix at NAB 2017

    HDR, 12G, 4k, IP - the range expands from Phabrix at NAB 2017

  • IP, 3G-SDI + HDR generation, analysis and monitoring from Phabrix NAB 2017

    IP, 3G-SDI + HDR generation, analysis and monitoring from Phabrix NAB 2017

  • Phabrix Qx at IBC 2016

    Phabrix Qx at IBC 2016

  • Phabrix Technology Demo at IBC 2016

    Phabrix Technology Demo at IBC 2016

  • PHABRIX Qx at NAB 2016

    PHABRIX Qx at NAB 2016

  • PHABRIX at NAB 2016

    PHABRIX at NAB 2016

  • PHABRIX TAG and Rx updates at NAB 2016

    PHABRIX TAG and Rx updates at NAB 2016

  • Phabrix Qx at IBC 2015

    Phabrix Qx at IBC 2015

  • Phabrix TAG and Rx at IBC 2015

    Phabrix TAG and Rx at IBC 2015

  • PHABRIX Rx range at NAB 2015

    PHABRIX Rx range at NAB 2015

  • PHABRIX Qx Rasteriser at NAB 2015

    PHABRIX Qx Rasteriser at NAB 2015

  • Phabrix RX series at IBC 2014

    Phabrix RX series at IBC 2014

  • Phabrix RX rack mount range at NAB 2014

    Phabrix RX rack mount range at NAB 2014

  • Phabrix at NAB 2014

    Phabrix at NAB 2014

  • Phabrix TAG at NAB 2014

    Phabrix TAG at NAB 2014

  • Phabrix at BVE 2013

    Phabrix at BVE 2013

  • Phabrix at IBC 2012 Part Two

    Phabrix at IBC 2012 Part Two

  • Phabrix at IBC 2012 Part One

    Phabrix at IBC 2012 Part One

  • AudioVideo BrandBuilder Corp at NAB 2016

    AudioVideo BrandBuilder Corp at NAB 2016


Related Shows
  • KitPlusTV summarise the Broadcast and Pro Video News 1st February 2021

    KitPlusTV summarise the Broadcast and Pro Video News 1st February 2021


Articles
The Future of Broadcast Technology
Sebastian Richter

Spotlight on Sebastian Richter, Vice President Media Systems at Rohde & Schwarz.

We are currently in the middle of a transition phase with migration to several new technologies, from the move to IP-based infrastructure and the shift from linear to video-on-demand (VOD).
The question for all of us is how long that transition phase will last; it is going to be faster for some customers then for others – national broadcasters, for example – it will be a slower process.

Tags: broadcast | 5g | 5g broadcast | rohde and schwarz | Sebastian Richter
Contributing Author Sebastian Richter Click to read
Spotlight on James Gilbert, Director of Product and Solution Management
James Gilbert

Over the next eight years we are going to be in transition, and within that there will be vastly different rates of change among content owners and media organisations. As a technology provider the onus is on us to be flexible and adaptable to meet this wide range of requirements from our customers.

Tags: | James Gilbert
Contributing Author James Gilbert Click to read
Spotlight on Karl Mehring, Director of Professional Services, Broadcast, Amplifier and Media
Karl Mehring

How has the role of Professional Services evolved in recent years and what vision do you have of the broadcast technology business? Covering new opportunities that the move to remote brings, new technologies such as 5G broadcast & the impact on the broadcast industry, and the challenges for broadcasters and how can they overcome them.

Tags: COTS | cloud | remote production | distribution | 5g broadcast | Karl Mehring
Contributing Author Karl Mehring Click to read
The Future of Broadcast Technology
Manfred Reitmeier

Now that OTT and VOD have become more mainstream, many commentators talk about traditional broadcast methods, like terrestrial transmission, being a thing of the past. With so many new platforms and non-traditional content services carving out a growing slice of the market, you can be forgiven for thinking that linear over-the-air television is on its way out. The reality is that the industry must strike a balance between meeting consumers’ shifting habits and the business and operational needs of content providers.

Tags: Rohde Schwarz | 5g broadcast | Manfred Reitmeier
Contributing Author Manfred Reitmeier Click to read
A switch in time: how KVM can unlock the future of broadcasting
Chris Smeeton

One of the major changes for broadcasters during the pandemic has been the shift towards remote production; by no means a new phenomenon in an IP environment, yet accelerated under lockdown to accommodate travel and gathering restrictions. A 2021 report found that almost 40% of broadcast professionals now employ remote production, up 9% on the previous year.

Tags: KVM | ARGOSY | GDSYS | KVM Tech | Chris Smeeton
Contributing Author Chris Smeeton Click to read