{"id":1693,"date":"2017-01-23T15:39:30","date_gmt":"2017-01-23T15:39:30","guid":{"rendered":"https:\/\/dh5ym.hopto.org\/wiki\/?p=1693"},"modified":"2017-02-01T20:38:33","modified_gmt":"2017-02-01T20:38:33","slug":"ocxo-g8ace-phasenoise","status":"publish","type":"post","link":"https:\/\/dh5ym.hopto.org\/wiki\/?p=1693","title":{"rendered":"OCXO G8ACE phasenoise &#038; startup"},"content":{"rendered":"<div id=\"attachment_1692\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/wp-image-1253798656jpg.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1692\" src=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/wp-image-1253798656jpg-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" class=\"size-medium wp-image-1692\" \/><\/a><p id=\"caption-attachment-1692\" class=\"wp-caption-text\">G8ACE OCXO at 103.5MHz<\/p><\/div>\n<p>103.5MHz oscillator briefly measured with R&amp;S FSP30..<\/p>\n<div id=\"attachment_1698\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/PN_G8ACE_FSP30.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1698\" src=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/PN_G8ACE_FSP30-300x147.png\" alt=\"\" width=\"300\" height=\"147\" class=\"size-medium wp-image-1698\" srcset=\"https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/PN_G8ACE_FSP30-300x147.png 300w, https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/PN_G8ACE_FSP30-768x377.png 768w, https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/PN_G8ACE_FSP30-1024x503.png 1024w, https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/PN_G8ACE_FSP30-500x246.png 500w, https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/PN_G8ACE_FSP30.png 1683w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-1698\" class=\"wp-caption-text\">PN Plot G8ACE OCXO<\/p><\/div>\n<p>I think above 1kHz the PN figure is determined by the FSP oscillator.<br \/>\nDoes someone have a better measurement of such an oscillator, especially above 1kHz up to 200kHz ? Unfortunately i do not have a better PN testset.<\/p>\n<p>The following picture shows the cold-start behavior of the OCXO from room temperature to 60 degree celcius. The X-axis shows time in seconds and the y-axis frequency in Hz.<br \/>\n<div id=\"attachment_1712\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/G8ACE_OCXO_Startup2.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1712\" src=\"http:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/G8ACE_OCXO_Startup2-300x184.png\" alt=\"\" width=\"300\" height=\"184\" class=\"size-medium wp-image-1712\" srcset=\"https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/G8ACE_OCXO_Startup2-300x184.png 300w, https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/G8ACE_OCXO_Startup2-768x470.png 768w, https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/G8ACE_OCXO_Startup2-490x300.png 490w, https:\/\/dh5ym.hopto.org\/wiki\/wp-content\/uploads\/2017\/01\/G8ACE_OCXO_Startup2.png 980w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-1712\" class=\"wp-caption-text\">G8ACE OCXO Startup<\/p><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"<p>103.5MHz oscillator briefly measured with R&amp;S FSP30.. I think above 1kHz the PN figure is determined by the FSP oscillator. Does someone have a better measurement of such an oscillator, especially above 1kHz up to 200kHz ? Unfortunately i do &hellip; <a href=\"https:\/\/dh5ym.hopto.org\/wiki\/?p=1693\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,24,15],"tags":[],"class_list":["post-1693","post","type-post","status-publish","format-standard","hentry","category-amateur-radio","category-electronics","category-rf"],"_links":{"self":[{"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/1693","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1693"}],"version-history":[{"count":7,"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/1693\/revisions"}],"predecessor-version":[{"id":1711,"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=\/wp\/v2\/posts\/1693\/revisions\/1711"}],"wp:attachment":[{"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dh5ym.hopto.org\/wiki\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}