{"id":1873,"date":"2018-06-02T07:00:55","date_gmt":"2018-06-02T07:00:55","guid":{"rendered":"http:\/\/www.n\u00f8rdoteket.dk\/?p=1873"},"modified":"2019-03-08T12:47:33","modified_gmt":"2019-03-08T12:47:33","slug":"powerline-performance-tests","status":"publish","type":"post","link":"https:\/\/noerdoteket.dk\/index.php\/2018\/06\/02\/powerline-performance-tests\/","title":{"rendered":"Powerline performance tests"},"content":{"rendered":"<p>Til afsnittet hvor jeg <a href=\"http:\/\/www.n\u00f8rdoteket.dk\/index.php\/2018\/04\/14\/face-off-netgear-versus-d-link-wi-fi-extendere-med-pla-backhaul\/\" target=\"_blank\" rel=\"noopener noreferrer\">sammenlignede et par PLA Wi-Fi extendere<\/a> fik jeg nogle sp\u00f8rgsm\u00e5l til hvordan hastigheden og r\u00e6kkevidden p\u00e5virkes af forskellige &#8220;uheldigheder&#8221; i hjemmets elinstallation.<\/p>\n<p><!--more--><\/p>\n<p>Det synes jeg er en passende anledning til at grave lidt dybere ned i PLA teknologien, og pr\u00f8ve at lave nogle objektive tests s\u00e5 vi i f\u00e6llesskab kan f\u00e5 syn for sagen.<\/p>\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- wp-inpost-add -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-7793103161450012\"\r\n     data-ad-slot=\"1741650889\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<p>Jeg vil fortsat teste PLA produkter med udgangspunkt i mit eget hjem, og den m\u00e5de som elinstallationen er lavet d\u00e9r, da det er s\u00e5dan produkterne benyttes ude i det virkelige liv.<\/p>\n<p>Men for at finde hj\u00f8rnestolperne for teknologien er det n\u00f8dvendigt at designe nogle tests, hvor jeg eliminerer flest mulige variable, og derfor har jeg konstrueret et setup hvor jeg kan teste PLA performance fra 5-50 meter i 5 meter increments i et t\u00e6t p\u00e5 st\u00f8jfrit scenarie.<\/p>\n<p id=\"hNftIyN\"><a href=\"http:\/\/www.n\u00f8rdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b1240650f5aa.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1093\" height=\"1080\" class=\"alignnone size-full wp-image-1898 \" src=\"http:\/\/www.n\u00f8rdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b1240650f5aa.png\" alt=\"\" srcset=\"https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b1240650f5aa.png 1093w, https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b1240650f5aa-300x297.png 300w, https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b1240650f5aa-768x759.png 768w, https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b1240650f5aa-1024x1012.png 1024w, https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b1240650f5aa-1200x1186.png 1200w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/a><\/p>\n<p>Det viste, at jeg med Homeplug AV2 produkter ikke kan forvente mere end knap 400 Mbps i reel throughput.<\/p>\n<p id=\"KQQMqiI\"><a href=\"http:\/\/www.n\u00f8rdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b12401e9f9df.png\"><img loading=\"lazy\" decoding=\"async\" width=\"2004\" height=\"1310\" class=\"alignnone size-full wp-image-1897 \" src=\"http:\/\/www.n\u00f8rdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b12401e9f9df.png\" alt=\"\" srcset=\"https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b12401e9f9df.png 2004w, https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b12401e9f9df-300x196.png 300w, https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b12401e9f9df-768x502.png 768w, https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b12401e9f9df-1024x669.png 1024w, https:\/\/noerdoteket.dk\/wp-content\/uploads\/2018\/06\/img_5b12401e9f9df-1200x784.png 1200w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 1362px) 62vw, 840px\" \/><\/a><\/p>\n<p>Det n\u00e6ste jeg ville kigge p\u00e5 var, om PLA enheder kan springe mellem faser, og i givet fald hvordan de g\u00f8r det.<\/p>\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- wp-inpost-add -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-7793103161450012\"\r\n     data-ad-slot=\"1741650889\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<p>Jeg pr\u00f8vede at tilslutte PLA dimserne til to forskellige faser i mit lab,, hvor jeg har de tre faser ved siden af hinanden.<\/p>\n<p>De tre faser l\u00f8ber sammen i et 5-leder kabel fra sikringsskabet til stikkontakterne, og jeg vil vurdere at kablet er ca. 6-7 meter langt. Grunden til at jeg interesserer mig for kabel topologien og l\u00e6ngden i denne sammenh\u00e6ng er, at jeg har en formodning om at PLA signalet kan &#8220;springe mellem faserne&#8221; ved hj\u00e6lp af den crosstalk som eksisterer mellem lederne, d\u00e9r hvor de l\u00f8ber t\u00e6t sammen. Skulle der v\u00e6re enkelte l\u00e6sere som t\u00e6nker: &#8220;Hvad er crosstalk?&#8221;, vil jeg opfordre til at l\u00e6se\u00a0<a href=\"http:\/\/www.n\u00f8rdoteket.dk\/index.php\/2015\/06\/24\/29\/\" target=\"_blank\" rel=\"noopener noreferrer\">denne artikel<\/a>.<\/p>\n<p>Det viste, at godt nok droppede hastigheden n\u00e5r de to enheder ikke var p\u00e5 samme fase, men hastigheden droppede i realiteten kun med 10-20%. Jeg lavede endnu et eksperiment hvor jeg isolerede nullederen mellem de to enheder og p\u00e5viste dermed at PLA enhederne faktisk udnytter den crosstalk der mellem lederne ganske effektivt.<\/p>\n<script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- wp-inpost-add -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-7793103161450012\"\r\n     data-ad-slot=\"1741650889\"\r\n     data-ad-format=\"auto\"><\/ins>\r\n<script>\r\n(adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<p>Til sidst kiggede jeg p\u00e5 hvordan PLA h\u00e5ndterer st\u00f8j. Til det benyttede jeg en LED lampe fra Harald Nyborg, som er helt ufatteligt d\u00e5rligt designet. Den st\u00f8jer som ind i helv&#8230; og n\u00e5r den t\u00e6ndes halveres PLA performance. Det viser, at den prim\u00e6rt begr\u00e6nsende faktor for PLA systemer er ikke elinstallationens l\u00e6ngde eller topologi, men den elektriske st\u00f8j, der forekommer i installationen.<\/p>\n<p>Det blev til en l\u00e6ngere rejse hvor jeg kommer langt ind under huden p\u00e5 den bagvedliggende transmissionsteknologi. Har du mod p\u00e5 det, s\u00e5 kan du f\u00f8lge med i rejsen i denne video. Jeg har indsat en indholdsfortegnelse i videobeskrivelsen p\u00e5 Youtube, s\u00e5 du kan springe mellem de interessante dele.<\/p>\n<p><iframe loading=\"lazy\" width=\"840\" height=\"473\" src=\"https:\/\/www.youtube.com\/embed\/UWyXGcEWkIk?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Til afsnittet hvor jeg sammenlignede et par PLA Wi-Fi extendere fik jeg nogle sp\u00f8rgsm\u00e5l til hvordan hastigheden og r\u00e6kkevidden p\u00e5virkes af forskellige &#8220;uheldigheder&#8221; i hjemmets elinstallation.<\/p>\n","protected":false},"author":1,"featured_media":1894,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,181,283,127,192,243,53],"tags":[264,284,265],"class_list":["post-1873","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dsl","category-elektronik","category-extender","category-goer-det-selv","category-netvaerk","category-test","category-tipsticks","tag-pla","tag-plc","tag-powerline"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Powerline performance tests - N\u00f8rd&#039;o&#039;teket<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/noerdoteket.dk\/index.php\/2018\/06\/02\/powerline-performance-tests\/\" \/>\n<meta property=\"og:locale\" content=\"da_DK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Powerline performance tests - N\u00f8rd&#039;o&#039;teket\" \/>\n<meta property=\"og:description\" content=\"Til afsnittet hvor jeg sammenlignede et par PLA Wi-Fi extendere fik jeg nogle sp\u00f8rgsm\u00e5l til hvordan hastigheden og r\u00e6kkevidden p\u00e5virkes af forskellige &#8220;uheldigheder&#8221; 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