{"id":7,"date":"2015-09-06T16:08:02","date_gmt":"2015-09-06T16:08:02","guid":{"rendered":"https:\/\/geekblog.febo.com\/wp\/?p=7"},"modified":"2015-11-22T00:11:32","modified_gmt":"2015-11-22T00:11:32","slug":"some-frequency-trimming","status":"publish","type":"post","link":"https:\/\/blog.febo.com\/?p=7","title":{"rendered":"Some Frequency Trimming"},"content":{"rendered":"<p>I normally don&#8217;t adjust the frequency of the half dozen high quality quartz oscillators I have running in the lab.\u00c2\u00a0 I don&#8217;t rely on them for absolute frequency precision as I have better sources for that.\u00c2\u00a0 But I thought it was time to get them all tweaked reasonably closely so the offset isn&#8217;t too bad for a new set of experiments I&#8217;m getting ready to start.<\/p>\n<p>First was my OSA 8607-008 BVA, which was powered on in 2012 and hasn&#8217;t been touched since.\u00c2\u00a0 The EFC setting was 485 and the frequency was about -3.3e10.\u00c2\u00a0 Adjusting the EFC to 494 brought it to +8e12.<\/p>\n<p><a href=\"http:\/\/blog.febo.com\/wp-content\/uploads\/2015\/09\/bva-hp5061a-freq_adjust.png\" data-rel=\"penci-gallery-image-content\" ><img decoding=\"async\" class=\"alignnone size-medium wp-image-8\" src=\"http:\/\/blog.febo.com\/wp-content\/uploads\/2015\/09\/bva-hp5061a-freq_adjust-300x136.png\" alt=\"bva-hp5061a-freq_adjust\" width=\"300\" height=\"136\" srcset=\"https:\/\/blog.febo.com\/wp-content\/uploads\/2015\/09\/bva-hp5061a-freq_adjust-300x136.png 300w, https:\/\/blog.febo.com\/wp-content\/uploads\/2015\/09\/bva-hp5061a-freq_adjust-1024x466.png 1024w, https:\/\/blog.febo.com\/wp-content\/uploads\/2015\/09\/bva-hp5061a-freq_adjust.png 1157w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I normally don&#8217;t adjust the frequency of the half dozen high quality quartz oscillators I have running in the lab.\u00c2\u00a0 I don&#8217;t rely on them for absolute frequency precision as&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","ngg_post_thumbnail":0,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-7","post","type-post","status-publish","format-standard","hentry","category-time-and-frequency"],"_links":{"self":[{"href":"https:\/\/blog.febo.com\/index.php?rest_route=\/wp\/v2\/posts\/7","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.febo.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.febo.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.febo.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.febo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7"}],"version-history":[{"count":2,"href":"https:\/\/blog.febo.com\/index.php?rest_route=\/wp\/v2\/posts\/7\/revisions"}],"predecessor-version":[{"id":10,"href":"https:\/\/blog.febo.com\/index.php?rest_route=\/wp\/v2\/posts\/7\/revisions\/10"}],"wp:attachment":[{"href":"https:\/\/blog.febo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.febo.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.febo.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}