{"id":6445,"date":"2022-01-08T13:51:39","date_gmt":"2022-01-08T13:51:39","guid":{"rendered":"https:\/\/41j.com\/blog\/?p=6445"},"modified":"2022-01-08T13:51:39","modified_gmt":"2022-01-08T13:51:39","slug":"newport-841-p-usb-black-case-notes","status":"publish","type":"post","link":"https:\/\/41j.com\/blog\/2022\/01\/newport-841-p-usb-black-case-notes\/","title":{"rendered":"Newport 841-P-USB (Black case) Notes"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/41j.com\/blog\/wp-content\/uploads\/2022\/01\/841-p-usb-1024x683.jpg\" alt=\"\" class=\"wp-image-6446\" width=\"430\" height=\"287\" srcset=\"https:\/\/41j.com\/blog\/wp-content\/uploads\/2022\/01\/841-p-usb-1024x683.jpg 1024w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2022\/01\/841-p-usb-300x200.jpg 300w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2022\/01\/841-p-usb-150x100.jpg 150w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2022\/01\/841-p-usb-768x512.jpg 768w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2022\/01\/841-p-usb-1536x1024.jpg 1536w, https:\/\/41j.com\/blog\/wp-content\/uploads\/2022\/01\/841-p-usb.jpg 1600w\" sizes=\"auto, (max-width: 430px) 100vw, 430px\" \/><\/figure><\/div>\n\n\n\n<p>I picked up an old USB optical power meter on eBay. This meter is on longer supported by Newport, and they don&#8217;t list it on their main site. If you go to their download site (https:\/\/download.newport.com) you can find software for the 841-P-USB, but as far as I can tell this is for a newer version of the instrument. The device does not appear to work with PMManager or any of the other software Newport currently support.<\/p>\n\n\n\n<p>It looks like there were two versions of the 841-P-USB, and earlier &#8220;black case&#8221; version and a newer silver case version. The silver case version seems to have an expanded command set, and possibly runs at a faster baud rate.<\/p>\n\n\n\n<p>However, you can talk to the 841-P-USB over serial and get data out of it. You should use 57600 baud (8N1). The 841-P-USB manual (for the silver version, which you can find on the site above) lists several commands. I used the following to take measurements:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td>*SOU<\/td><td>Zero offset<\/td><\/tr><tr><td>*CVU<\/td><td>Take single measurement<\/td><\/tr><tr><td>*CAU<\/td><td>Print continuous measurements<\/td><\/tr><tr><td>*CSU<\/td><td>Stop continuous measurements<\/td><\/tr><tr><td>*F01<\/td><td>Show device and sensor information<\/td><\/tr><tr><td>*PWC00000<\/td><td>Set the wavelength used for connection (e.g. *PWC00532)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>If I do find any software that works with this instrument, or further information about the device. I&#8217;ll update this blog post.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I picked up an old USB optical power meter on eBay. This meter is on longer supported by Newport, and they don&#8217;t list it on their main site. If you go to their download site (https:\/\/download.newport.com) you can find software for the 841-P-USB, but as far as I can tell this is for a newer [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","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":[1],"tags":[],"class_list":["post-6445","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-1FX","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/6445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=6445"}],"version-history":[{"count":1,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/6445\/revisions"}],"predecessor-version":[{"id":6447,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/6445\/revisions\/6447"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=6445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=6445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=6445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}