{"id":80589,"date":"2026-03-25T10:43:00","date_gmt":"2026-03-25T09:43:00","guid":{"rendered":"https:\/\/fhi.nl\/nieuws\/low-noise-measurements-with-quietchannel-technology-on-the-7-series-oscilloscope\/"},"modified":"2026-03-25T11:05:43","modified_gmt":"2026-03-25T10:05:43","slug":"low-noise-measurements-with-quietchannel-technology-on-the-7-series-oscilloscope","status":"publish","type":"news","link":"https:\/\/fhi.nl\/en\/news\/low-noise-measurements-with-quietchannel-technology-on-the-7-series-oscilloscope\/","title":{"rendered":"Low-Noise Measurements with QuietChannel Technology on the 7 Series Oscilloscope"},"content":{"rendered":"<header id=\"header\" class=\"header header--high header--branch\">\n\n\t\t\t\t\t\t\t\t\t\t<div class=\"header__background header__background--high\">\n\t\t\t\t\t<img decoding=\"async\" class=\"header__background-image\" src=\"https:\/\/fhi.nl\/app\/uploads\/2026\/03\/quietchannel-blog-main-800xx539.jpg\" alt=\"\">\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\n\t\n\t<div class=\"container\">\n\t\t<div class=\"header__content\">\n\t\t\t<div class=\"header__first\">\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<h1 class=\"header__title\" >\n\t\t\t\t\tLow-Noise Measurements with QuietChannel Technology on the 7 Series Oscilloscope\t\t\t\t<\/h1>\n\n\t\t\t\t<div class=\"header__dots-line\">\n\t\t\t\t\t<svg width=\"431\" height=\"9\" viewbox=\"0 0 431 9\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M430.799 4.192a1.136 1.136 0 1 1-2.272-.001 1.136 1.136 0 0 1 2.272 0Zm-27.272 0a1.135 1.135 0 1 1-2.27 0 1.135 1.135 0 0 1 2.27 0Zm-27.27 0a1.136 1.136 0 1 1-2.272-.001 1.136 1.136 0 0 1 2.272 0Zm-27.272 0a1.39 1.39 0 1 1-2.78 0 1.39 1.39 0 0 1 2.78 0Zm-27.78 0a1.645 1.645 0 1 1-3.29 0 1.645 1.645 0 0 1 3.29 0Zm-28.29 0a1.9 1.9 0 1 1-3.799 0 1.9 1.9 0 0 1 3.799 0Zm-28.799 0a2.154 2.154 0 1 1-4.308 0 2.154 2.154 0 0 1 4.308 0Zm-29.308 0a2.41 2.41 0 1 1-4.819 0 2.41 2.41 0 0 1 4.819 0Zm-29.819 0a2.663 2.663 0 1 1-5.326.001 2.663 2.663 0 0 1 5.326-.001Zm-30.327 0a2.919 2.919 0 1 1-5.837 0 2.919 2.919 0 0 1 5.837 0Zm-30.837 0a3.173 3.173 0 1 1-6.345.001 3.173 3.173 0 0 1 6.345 0Zm-31.346 0a3.428 3.428 0 1 1-6.856 0 3.428 3.428 0 0 1 6.856 0Zm-31.856 0a3.683 3.683 0 1 1-7.365 0 3.683 3.683 0 0 1 7.365 0Zm-32.365 0a3.937 3.937 0 1 1-7.875 0 3.937 3.937 0 0 1 7.875 0Zm-32.874 0a4.192 4.192 0 1 1-8.384 0 4.192 4.192 0 0 1 8.384 0Z\" fill=\"#FFF960\"\/><\/svg>\t\t\t\t<\/div>\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\n\t\t\t\t\t\t\t<div class=\"header__second\">\n\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"header__branch-logos\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/fhi.nl\/app\/uploads\/2024\/02\/Industriele-elektronica.svg\" class=\"header__branch-logo\" alt=\"\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t\t\n\t\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t<\/div>\n<\/header>\n\n\t<div class=\"header__meta\">\n\t<div class=\"container\">\n\t\t<div class=\"header__meta__category\">\n\n\t\t\t\t\t\t\t<div class=\"header__meta__detail\">\n\t\t\t\t\t<div>Branch<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/fhi.nl\/en\/kennishub\/?_branches_kennishub=industriele-elektronica\" class=\"header__meta__detail--branch\">\n\t\t\t\t\t\t\t\tIndustrial Electronics\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t\t<div class=\"header__meta__detail\">\n\t\t\t\t\t<div>Subject<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/fhi.nl\/en\/kennishub\/?_onderwerp_kennishub=industriele-elektronica\" class=\"header__meta__detail--categorie\">\n\t\t\t\t\t\t\t\tIndustrial Electronics\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/fhi.nl\/en\/kennishub\/?_onderwerp_kennishub=test-en-meetapparatuur\" class=\"header__meta__detail--categorie\">\n\t\t\t\t\t\t\t\tTest and measuring equipment\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n<div class=\"text bg--white\">\n\t<div class=\"container\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"text__content text__content--1-col\">\n\t\t\t<div class=\"inner-block text option-image\">\r\n<div class=\"image\">If you&#039;ve ever tried to measure high-speed signals over real-world channels, you know the struggle. Lossy cables, fixtures, and connectors all blur the signal before it reaches your oscilloscope. That&#039;s why engineers turn to de-embedding\u2014a mathematical process that removes channel effects so you can see the signal as if it came straight from the transmitter.<\/div>\r\n<\/div>\r\n<div class=\"inner-block text option-text\">\r\n<p>But here&#039;s the catch: while de-embedding restores lost high-frequency content, it also amplifies oscilloscope noise. Think of it like sharpening a blurry photo\u2014you recover detail, but the grain and static get magnified, too. For compliance tests and design validation, that added noise can make the difference between a passing eye diagram and a costly redesign.<\/p>\r\n<p>\u00a0<\/p>\r\n<\/div>\r\n<div class=\"inner-block text option-image\">\r\n<div class=\"image\"><img decoding=\"async\" src=\"https:\/\/cnrood.com\/wp-content\/uploads\/2026\/03\/quietchannel-blog-figure-1-400x155-1.jpg\" alt=\"\" \/>\r\n<p class=\"caption\">Figure 1: Frequency content of a 20 Gb\/s PRBS signal before and after channel loss.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"inner-block text option-text\">\r\n<h4>Why Traditional De-Embedding Amplifies Noise in Oscilloscope Measurements<\/h4>\r\n<p>Modern\u00a0<a href=\"https:\/\/www.tek.com\/en\/products\/oscilloscopes\" target=\"_blank\" rel=\"noopener noreferrer\">oscilloscopes<\/a>\u00a0already work hard to keep their noise floors low, but when you apply a de-embed filter, both the signal and the oscilloscope&#039;s noise get boosted together. The result? Cleaner edges aren&#039;t as clean as they should be, and jitter measurements can be misleading.<\/p>\r\n<p>For short traces, this may only cost you a few percent of margin. But as data rates climb and channels stretch, noise amplification can make your carefully de-embedded eye diagrams collapse, hiding the truth about your design&#039;s performance.<\/p>\r\n<\/div>\r\n<div class=\"inner-block text option-image\">\r\n<div class=\"image\"><img decoding=\"async\" src=\"https:\/\/cnrood.com\/wp-content\/uploads\/2026\/03\/quietchannel-blog-figure-2-400x233-1.jpg\" alt=\"\" \/>\r\n<p class=\"caption\">Figure 2: Traditional oscilloscope signal path with software de-embed.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"inner-block text option-text\">\r\n<h4>QuietChannel Technology: Reducing Noise Floor for Accurate Oscilloscope Measurements<\/h4>\r\n<p>Tektronix engineers recognized that the bottleneck wasn&#039;t just the channel\u2014it was how the instrument handled noise when de-embedding.<\/p>\r\n<p>That&#039;s why the 7 Series DPO oscilloscope introduced QuietChannel\u2122 technology, a patented blend of hardware and DSP that shapes the scope&#039;s noise floor instead of letting it grow unchecked.<\/p>\r\n<\/div>\r\n<div class=\"inner-block text option-image\">\r\n<div class=\"image\"><img decoding=\"async\" src=\"https:\/\/cnrood.com\/wp-content\/uploads\/2026\/03\/quietchannel-blog-test-results-400x219-1.jpg\" alt=\"\" \/>\r\n<p class=\"caption\">Test setup: A BERT scope (left) is used to drive PRBS test signals through channel of different lengths. The 7 Series DPO with QuietChannel technology is used to measure the resulting signal.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"inner-block text option-text\">\r\n<h3>Here&#039;s how it works:<\/h3>\r\n<ul>\r\n<li>The oscilloscope&#039;s preamp applies a form of continuous-time linear equalization (CTLE) to boost high-frequency components before digitization.<\/li>\r\n<li>After the ADC, the DSP reverses that equalization for a flat frequency response.<\/li>\r\n<li>This technique leaves the signal intact while shaping the noise floor so it stays lower at higher frequencies.<\/li>\r\n<\/ul>\r\n<p>The result is like putting on a pair of noise-canceling headphones for your oscilloscope \u2014suddenly, the de-embedded waveform is clearer, with less jitter and more trustworthy margins.<\/p>\r\n<\/div>\r\n<div class=\"inner-block text option-image\">\r\n<div class=\"image\"><img decoding=\"async\" src=\"https:\/\/cnrood.com\/wp-content\/uploads\/2026\/03\/quietchannel-blog-figure-3-400x196-1.jpg\" alt=\"\" \/>\r\n<p class=\"caption\">Figure 3: Oscilloscope noise with de-embed and QuietChannel technology.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"inner-block text option-text\">\r\n<h4>Experiment Results: Eye Diagrams, Jitter and SNR Improvements<\/h4>\r\n<p>Tektronix ran a series of experiments to show the impact of QuietChannel technology across different channel lengths:<\/p>\r\n<ul>\r\n<li><strong>17-inch trace, 20 Gb\/s data<\/strong>\u00a0\u2013 A modest 3% increase in eye height and 1% eye width. Small, but enough to swing compliance results in your favor.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<div class=\"inner-block text option-image\">\r\n<div class=\"image\"><img decoding=\"async\" src=\"https:\/\/cnrood.com\/wp-content\/uploads\/2026\/03\/quietchannel-blog-figure-4-400x225-1.jpg\" alt=\"\" \/>\r\n<p class=\"caption\">Figure 4: 20 Gb\/s with QuietChannel technology through 17-inch trace. Eye height has increased by 3%.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"inner-block text option-text\">\r\n<ul>\r\n<li><strong>24-inch trace<\/strong>\u00a0\u2013 Eye height jumped\u00a0<strong>34%<\/strong>\u00a0and eye width widened\u00a0<strong>31%<\/strong>. Even more dramatic, random jitter dropped by nearly\u00a0<strong>40%<\/strong>\u2014from 1.4 ps to just 860 fs.<\/li>\r\n<li><strong>31-inch trace, 16 Gb\/s data<\/strong>\u00a0\u2013 Eye height more than doubled, with a 5 dB improvement in signal-to-noise ratio at higher frequencies.<\/li>\r\n<\/ul>\r\n<\/div>\r\n<div class=\"inner-block text option-image\">\r\n<div class=\"image\"><img decoding=\"async\" src=\"https:\/\/cnrood.com\/wp-content\/uploads\/2026\/03\/quietchannel-blog-figure-5-400x217-1.jpg\" alt=\"\" \/><\/div>\r\n<\/div>\r\n<div class=\"inner-block text option-image\">\r\n<div class=\"image\"><img decoding=\"async\" src=\"https:\/\/cnrood.com\/wp-content\/uploads\/2026\/03\/quietchannel-blog-figure-6-400x217-1.jpg\" alt=\"\" \/>\r\n<p class=\"caption\">Figures 5 &amp; 6: 20 Gb\/s de-embed of the same 24-inch trace. The eye diagram on the left was measured without QuietChannel technology and shows random jitter (RJ) of 1.4 ps. The eye diagram on the right was measured with QuietChannel technology and shows RJ of about 860 fs.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"inner-block text option-text\">\r\n<p>In other words: the longer and lossier your channel, the more QuietChannel technology helps.<\/p>\r\n<h4>Benefits of QuietChannel Technology for Engineers<\/h4>\r\n<p>For compliance testing, these improvements mean higher confidence that your DUT passes when it should\u2014and fails when it must. For design validation, it means faster debug, fewer false failures, and better yield at production.<\/p>\r\n<p>Instead of fighting against noise in your measurement system, you can finally see the\u00a0<em>real<\/em>\u00a0behavior of your signal.<\/p>\r\n<h4>Bringing Accuracy and Clarity to High-Speed Testing and Debugging<\/h4>\r\n<p>QuietChannel technology isn&#039;t just another filter\u2014it&#039;s a rethinking of how\u00a0<a href=\"https:\/\/www.tek.com\/en\/documents\/primer\/oscilloscope-basics\" target=\"_blank\" rel=\"noopener noreferrer\">oscilloscopes<\/a>\u00a0manage noise in the face of de-embedding. By reshaping the noise floor itself, the Tektronix 7 Series DPO makes lossy channel testing more accurate, more reliable, and more engineer-friendly.<\/p>\r\n<p>If you&#039;re working with 16, 20, or even 28 Gb\/s serial links, QuietChannel technology could be the margin of clarity you&#039;ve been missing.<\/p>\r\n<\/div>\t\t<\/div>\n\t<\/div>\n<\/div>\r\n\t<div class=\"articles bg--offwhite automatic\">\r\n\t\t<div class=\"container\">\r\n\t\t\t<div class=\"articles__header\">\r\n\t\t\t\t\t\t\t\t\t<div class='heading-wrapper'><svg width=\"13\" height=\"13\" viewbox=\"0 0 13 13\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"6.394\" cy=\"6.5\" r=\"6.394\" fill=\"#000\"\/><\/svg><h2>Related articles<\/h2><\/div>\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"\/en\/profiel\/cn-rood\/\" class=\"button button--outline\">view profile<\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t<div class=\"post-grid post-grid--no-padding\">\r\n\t\t\t\t\n<a class=\"single-item single-item__articles\" href=\"https:\/\/fhi.nl\/en\/news\/nieuwe-aanpassingen-doorgevoerd-op-het-nationaal-groeifonds-na-kritiek\/\" data-id=\"40376\">\n\t<div class=\"single-item__articles-icon\">\n\t\t<svg width=\"35\" height=\"35\" viewbox=\"0 0 35 35\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n<mask id=\"mask0_1182_5532\" style=\"mask-type:luminance\" maskunits=\"userSpaceOnUse\" x=\"0\" y=\"0\" width=\"35\" height=\"35\">\n<path d=\"M0 0H35V35H0V0Z\" fill=\"white\"\/>\n<\/mask>\n<g mask=\"url(#mask0_1182_5532)\">\n<path d=\"M5.12695 9.22852H1.02539V31.9238H10.4299C12.2868 31.9238 14.0678 32.6615 15.3809 33.9746H19.6191C20.9322 32.6615 22.7132 31.9238 24.5701 31.9238H33.9746V11.2793H29.873\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M17.5 9.22852H18.1426C20.0088 7.89544 22.2237 7.17773 24.5615 7.17773H29.873V27.8223H24.5615C22.2237 27.8223 20.0088 28.54 18.1426 29.873H16.8574C14.9912 28.54 12.7763 27.8223 10.4385 27.8223H5.12695V5.12695H9.22852\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M9.22852 1.02539V21.6699C13.759 21.6699 17.5 25.3425 17.5 29.873V9.22852C17.5 4.698 13.759 1.02539 9.22852 1.02539Z\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<\/g>\n<\/svg>\n\t<\/div>\n\t<div class=\"single-item__articles-title\"><div class='heading-wrapper'><h3>New adjustments made to the National Growth Fund after criticism<\/h3><\/div><\/div>\n\t<div class=\"single-item__articles-terms\">\n\t\t\n\t\t\n\t\t\t<\/div>\n\t<div class=\"single-item__articles-author-date-wrapper\">\n\t\t\t\t\t<div class=\"single-item__articles-author\">\n\t\t\t\tFHI, Federation of Technology Industries\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"single-item__articles-date\">\n\t\t\t\tDecember 3, 2020\t\t\t<\/div>\n\t\t\t<\/div>\n<\/a>\n\n<a class=\"single-item single-item__articles\" href=\"https:\/\/fhi.nl\/en\/news\/renovatie-en-inrichten-laboratorium\/\" data-id=\"34924\">\n\t<div class=\"single-item__articles-icon\">\n\t\t<svg width=\"35\" height=\"35\" viewbox=\"0 0 35 35\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n<mask id=\"mask0_1182_5532\" style=\"mask-type:luminance\" maskunits=\"userSpaceOnUse\" x=\"0\" y=\"0\" width=\"35\" height=\"35\">\n<path d=\"M0 0H35V35H0V0Z\" fill=\"white\"\/>\n<\/mask>\n<g mask=\"url(#mask0_1182_5532)\">\n<path d=\"M5.12695 9.22852H1.02539V31.9238H10.4299C12.2868 31.9238 14.0678 32.6615 15.3809 33.9746H19.6191C20.9322 32.6615 22.7132 31.9238 24.5701 31.9238H33.9746V11.2793H29.873\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M17.5 9.22852H18.1426C20.0088 7.89544 22.2237 7.17773 24.5615 7.17773H29.873V27.8223H24.5615C22.2237 27.8223 20.0088 28.54 18.1426 29.873H16.8574C14.9912 28.54 12.7763 27.8223 10.4385 27.8223H5.12695V5.12695H9.22852\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M9.22852 1.02539V21.6699C13.759 21.6699 17.5 25.3425 17.5 29.873V9.22852C17.5 4.698 13.759 1.02539 9.22852 1.02539Z\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<\/g>\n<\/svg>\n\t<\/div>\n\t<div class=\"single-item__articles-title\"><div class='heading-wrapper'><h3>Renovation and furnishing of laboratory<\/h3><\/div><\/div>\n\t<div class=\"single-item__articles-terms\">\n\t\t\n\t\t\n\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">World of Industry, Technology &amp; Science<\/span>\n\t\t\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">Laboratory Technology<\/span>\n\t\t\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">General laboratory equipment<\/span>\n\t\t\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">General laboratory supplies<\/span>\n\t\t\t\t\t<\/div>\n\t<div class=\"single-item__articles-author-date-wrapper\">\n\t\t\t\t\t<div class=\"single-item__articles-author\">\n\t\t\t\tLabMakelaar Benelux BV\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"single-item__articles-date\">\n\t\t\t\tSeptember 6, 2022\t\t\t<\/div>\n\t\t\t<\/div>\n<\/a>\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t<\/div>","protected":false},"excerpt":{"rendered":"<p>If you&#039;ve ever tried to measure high-speed signals over real-world channels, you know the struggle. Lossy cables, fixtures, and connectors all blur the signal before it reaches your oscilloscope. That&#039;s why engineers turn to de-embedding\u2014a mathematical process that removes channel effects so you can see the signal as if it came straight from the transmitter.<\/p>","protected":false},"featured_media":80590,"template":"","branches":[13],"events":[361,9,60,370,8],"secretariat":[],"categories":[57,22],"themes_tax":[538],"content_types":[514],"class_list":["post-80589","news","type-news","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Low-Noise Measurements with QuietChannel Technology on the 7 Series Oscilloscope<\/title>\n<meta name=\"description\" content=\"The result is like putting on a pair of noise-canceling headphones for your oscilloscope \u2014suddenly, the de-embedded waveform is clearer, with less jitter and more trustworthy margins.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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