{"id":2636,"date":"2022-02-09T23:22:05","date_gmt":"2022-02-10T06:22:05","guid":{"rendered":"https:\/\/www.digitalview.com\/blog\/?p=2636"},"modified":"2022-02-09T23:41:45","modified_gmt":"2022-02-10T06:41:45","slug":"pwm-backlight-brightness-control","status":"publish","type":"post","link":"https:\/\/www.digitalview.website\/blog\/pwm-backlight-brightness-control\/","title":{"rendered":"PWM &#8211; Backlight Brightness Control"},"content":{"rendered":"\n<p>Most of the Digital View controller boards support 8 bit PWM for backlight brightness control, which enables up to 256 steps to brightness adjustment. However, some of our more recent models support up to 12 bit PWM providing up to 4096 steps for brightness adjustment.  <\/p>\n\n\n\n<p>In addition to 12 bit PWM, some of our controller board models also provide a hi\/lo pin for an additional backlight rail. <\/p>\n\n\n\n<p>Here is a brief summary:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\"><strong>MODEL<\/strong><\/td><td><strong>PWM<\/strong><\/td><td><strong>Hi\/Lo (GPIO) Pin<\/strong><\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">HX-2560-SDI<\/td><td>12 bit<\/td><td>Yes<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">SVX \/ HX-1920-PRO<\/td><td>12 bit<\/td><td>Yes<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">SP-1920v2<\/td><td>8 bit default, 12 bit option<\/td><td>Yes<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">SP-1920-DUAL-HDMI<\/td><td>8 bit default, 12 bit option<\/td><td>Yes<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>All other Digital View controller board models support 8 bit PWM for backlight brightness control. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"appnote-alt-1920-hlt-1920-dt-1920\">APPNOTE ALT-1920, HLT-1920, DT-1920<\/h2>\n\n\n\n<p>Linked here as an example of setting up PWM control is a brief application note for the setting of PWM backlight brightness on the ALT-1920, HLT-1920, DT-1920 model controller boards. Document: <\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/www.digitalview.com\/blog\/wp-content\/uploads\/2022\/02\/appnote_pwm_backlight_brightness_adjustment_alt-hlt-1920-dt-1920.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of Embed of appnote_pwm_backlight_brightness_adjustment_alt-hlt-1920-dt-1920..\"><\/object><a id=\"wp-block-file--media-e849fc2c-6915-4840-b5ca-b70e0509a058\" href=\"https:\/\/www.digitalview.com\/blog\/wp-content\/uploads\/2022\/02\/appnote_pwm_backlight_brightness_adjustment_alt-hlt-1920-dt-1920.pdf\">appnote_pwm_backlight_brightness_adjustment_alt-hlt-1920-dt-1920<\/a><a href=\"https:\/\/www.digitalview.com\/blog\/wp-content\/uploads\/2022\/02\/appnote_pwm_backlight_brightness_adjustment_alt-hlt-1920-dt-1920.pdf\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-e849fc2c-6915-4840-b5ca-b70e0509a058\">Download<\/a><\/div>\n\n\n\n<hr class=\"wp-block-separator\"\/>\n\n\n\n<p><em>NOTE: For other Digital View blogs mentioning PWM or &#8220;backlight brightness&#8221; please use the Search box, top right on this page. <\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Most of the Digital View controller boards support 8 bit PWM for backlight brightness control, which enables up to 256 steps to brightness adjustment. However, some of our more recent models support up to 12 <a class=\"mh-excerpt-more\" href=\"https:\/\/www.digitalview.website\/blog\/pwm-backlight-brightness-control\/\" title=\"PWM &#8211; Backlight Brightness Control\">&#8230; [more]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":2396,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[40,4],"tags":[],"class_list":{"0":"post-2636","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-displays","8":"category-display-electronics"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PWM - Backlight Brightness Control - Digital View blog<\/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:\/\/www.digitalview.website\/blog\/pwm-backlight-brightness-control\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PWM - Backlight Brightness Control - Digital View blog\" \/>\n<meta property=\"og:description\" content=\"Most of the Digital View controller boards support 8 bit PWM for backlight brightness control, which enables up to 256 steps to brightness adjustment. 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