{"id":59,"date":"2007-04-14T23:05:13","date_gmt":"2007-04-15T03:05:13","guid":{"rendered":"http:\/\/www.lowtek.ca\/ampro\/?p=59"},"modified":"2007-04-14T23:05:13","modified_gmt":"2007-04-15T03:05:13","slug":"calibration-initial-measurements-of-the-ampro","status":"publish","type":"post","link":"https:\/\/lowtek.ca\/ampro\/?p=59","title":{"rendered":"Calibration: initial measurements of the Ampro"},"content":{"rendered":"<p>So the fancy mounting of the sensor to my tripod ended up being some painters green tape..  I set the spyder sensor without the LCD filter attached facing the screen (to capture reflected light from the screen) a few inches away from the center &#8211; and at a slight angle to avoid the shadow of the sensor itself.  A quick run with AVIA to get IRE10 &#8211; IRE100 and I was able to capture some interesting data.<\/p>\n<p><img decoding=\"async\" alt=\"Gray Scale 1\" id=\"image58\" title=\"Gray Scale 1\" src=\"http:\/\/www.lowtek.ca\/ampro\/wp-content\/uploads\/2007\/04\/gray_scale_1.jpg\" \/><\/p>\n<p>While I didn&#8217;t let the CRT run for more than about 10 minutes, things clearly need improving.  I tested the uncalibrated screen of my laptop with the sypder sensor and it read fairly flat (if you ignored the low IRE numbers) &#8211; as I would have expected &#8211; so I have some level of confidence in the software actually trying to do something sensible.<\/p>\n<p>Of course &#8211; now I need to learn how to properly interpret the data, and what steps to take in order to make sensible improvements.  The absolute first thing I should do is a full setup (mechanical, etc) of the basics.  Its been a long time since I&#8217;ve taken the time to properly calibrate the system doing the things that I know how to do.<\/p>\n<p>I did come across a useful article on Curt Palme&#8217;s site.  <a href=\"http:\/\/www.curtpalme.com\/ES_Tube_Projector_Gray_Scale_Adjustment1.shtm\">How to set G2 on ES focus sets.<\/a>  This isn&#8217;t how I&#8217;ve done it in the past &#8211; having simply blanked the tube (to give a completely black image) and then set the G2 such that the raster just disappeared.  Having just searched this blog for g2, it seems I haven&#8217;t taken the time to really sit down and document a full setup procedure &#8211; and I should as it would serve as a good reference for myself later on.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So the fancy mounting of the sensor to my tripod ended up being some painters green tape.. I set the spyder sensor without the LCD filter attached facing the screen (to capture reflected light from the screen) a few inches away from the center &#8211; and at a slight angle to avoid the shadow of &hellip; <a href=\"https:\/\/lowtek.ca\/ampro\/?p=59\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Calibration: initial measurements of the Ampro&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-59","post","type-post","status-publish","format-standard","hentry","category-ampro-journal"],"_links":{"self":[{"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/posts\/59","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=59"}],"version-history":[{"count":0,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=\/wp\/v2\/posts\/59\/revisions"}],"wp:attachment":[{"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=59"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=59"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lowtek.ca\/ampro\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=59"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}