{"id":136,"date":"2011-12-01T20:01:20","date_gmt":"2011-12-01T20:01:20","guid":{"rendered":"http:\/\/mitat.tuu.fi\/?p=136"},"modified":"2011-12-01T20:08:40","modified_gmt":"2011-12-01T20:08:40","slug":"turnigy-9x-with-th9x-firmware-ppm-out","status":"publish","type":"post","link":"http:\/\/mitat.tuu.fi\/?p=136","title":{"rendered":"Turnigy 9X with th9x firmware PPM out"},"content":{"rendered":"<p>The trainer out \/ transmitter out PPM pulse train on th9x has following features (measured facts):<\/p>\n<ul>\n<li>Channel pulse is logical HIGH<\/li>\n<li>Channel minimum pulse length = 700uS (microseconds, thats 0.7 milliseconds)\n<\/li>\n<li>Channel minimum pulse length = 1700uS (microseconds, thats 1.7 milliseconds)\n<\/li>\n<li>8 channels per frame<\/li>\n<li>Pause (logical low) between pulses is 300uS and has nothing to do with actual channel pulse width, pause has constant length (sum of pauses: 8*300uS = 2400uS = 2.4ms)<\/li>\n<li>Conclusion: one channel tries to be max. 2000uS which would make total max. 16ms)\n<li>Total frame length = 20 milliseconds<\/li>\n<li>So: last &#8220;channel&#8221; is 20ms minus sum of all pulses in frame, about 10..12ms (based on this information the last channel length is minimum 4ms)<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>The trainer out \/ transmitter out PPM pulse train on th9x has following features (measured facts): Channel pulse is logical HIGH Channel minimum pulse length = 700uS (microseconds, thats 0.7 milliseconds) Channel minimum pulse length = 1700uS (microseconds, thats 1.7 milliseconds) 8 channels per frame Pause (logical low) between pulses is 300uS and has nothing [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-136","post","type-post","status-publish","format-standard","hentry","category-measured"],"_links":{"self":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=136"}],"version-history":[{"count":11,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/136\/revisions"}],"predecessor-version":[{"id":147,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=\/wp\/v2\/posts\/136\/revisions\/147"}],"wp:attachment":[{"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=136"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mitat.tuu.fi\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}