{"id":841,"date":"2012-01-24T02:08:45","date_gmt":"2012-01-24T07:08:45","guid":{"rendered":"http:\/\/bardagjy.com\/?p=841"},"modified":"2012-01-24T14:03:56","modified_gmt":"2012-01-24T19:03:56","slug":"ni-usb-6009","status":"publish","type":"post","link":"https:\/\/bardagjy.com\/?p=841","title":{"rendered":"NI USB-6009"},"content":{"rendered":"<div id=\"attachment_847\" style=\"width: 620px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/niedi.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-847\" src=\"http:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/niedi-610x469.jpg\" alt=\"\" title=\"NI USB-6009\" width=\"610\" height=\"469\" class=\"size-large wp-image-847\" srcset=\"https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/niedi-610x469.jpg 610w, https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/niedi-300x230.jpg 300w, https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/niedi-299x230.jpg 299w\" sizes=\"(max-width: 610px) 100vw, 610px\" \/><\/a><p id=\"caption-attachment-847\" class=\"wp-caption-text\">NI USB-6009, click to embiggen.<\/p><\/div>\n<p>\nSo I was handed a <a href=\"http:\/\/sine.ni.com\/nips\/cds\/view\/p\/lang\/en\/nid\/201987\">National Instruments USB-6009<\/a> and I had to tear it down.\n<\/p>\n<p>\nIt&#8217;s a fairly nice four layer design, with only a few major components. The board is marked USB-600X and there is an un-populated header &#8211; can a USB-6008 be easily upgraded to a USB-6009?\n<\/p>\n<p>\nOn the right, we see a USB B connector and a single indicator LED. There is a whole mess of unpopulated passives around the highspeed USB traces. They must have been concerned about signal integrity issues.\n<\/p>\n<p>\nOn the top and bottom of the image, there are two large screw terminal connectors. The top (in the image) port is designated &#8220;Digital&#8221; and the bottom port is designated &#8220;Analog&#8221;.\n<\/p>\n<p>\nThe &#8220;guts&#8221; of the 6009 are the following two parts\n<\/p>\n<ul>\n<li><a href=\"http:\/\/www.keil.com\/dd\/docs\/datashts\/silabs\/c8051f32x.pdf\">SiLabs C8051F320<\/a> an 8051 core USB microcontroller with a whole ton of peripherals.<\/li>\n<li><a href=\"http:\/\/www.ti.com\/lit\/ds\/slas370c\/slas370c.pdf\">TI ADS7871<\/a> a data acquisition system-on-a-chip.<\/li>\n<\/ul>\n<p>\nOn the top, &#8220;Digital&#8221; port, from the left to the right, are pins P0.0-P0.7, P1.0-P1-3, PFI0 (trigger interrupt), 2V5, 5V, and GND. The GPIO and trigger interrupt pins all have a similar analog front end which is connected directly to the 8051.\n<\/p>\n<div id=\"attachment_854\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-1-28-01-AM.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-854\" src=\"http:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-1-28-01-AM-300x140.jpg\" alt=\"\" title=\"usb6009frontend\" width=\"300\" height=\"140\" class=\"size-medium wp-image-854\" srcset=\"https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-1-28-01-AM-300x140.jpg 300w, https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-1-28-01-AM-610x286.jpg 610w, https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-1-28-01-AM-299x140.jpg 299w, https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-1-28-01-AM.jpg 1457w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-854\" class=\"wp-caption-text\">NI USB-6009 analog front end.<\/p><\/div>\n<p>\nThe engineers at NI did an excellent job on the silkscreen of the board, but looking at it, some of the markings leave me puzzled. Take a look at the analog input schematic. The passive in series with the input signal is marked RTx. Perhaps it&#8217;s an NTC thermistor? The SOT-23, three terminal part has CRx silkscreen markings. I&#8217;m thinking it might be a dual diode package. This part is also unpopulated on the USB traces.\n<\/p>\n<p>\nActive components are marked Ux. U1 appears to be the 2V5 linear voltage regulator. U2 looks like a switching power supply controller for the 5V line.\n<\/p>\n<div id=\"attachment_865\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-2-03-22-AM.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-865\" src=\"http:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-2-03-22-AM-300x140.jpg\" alt=\"\" title=\"anaUSB6009in\" width=\"300\" height=\"140\" class=\"size-medium wp-image-865\" srcset=\"https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-2-03-22-AM-300x140.jpg 300w, https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-2-03-22-AM-610x284.jpg 610w, https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-2-03-22-AM-299x139.jpg 299w, https:\/\/bardagjy.com\/wp-content\/uploads\/2012\/01\/Photo-Jan-24-2-03-22-AM.jpg 1474w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-865\" class=\"wp-caption-text\">USB-6009 analog input front-end.<\/p><\/div>\n<p>\nOn the bottom (in the picture) &#8220;Analog&#8221; port, the analog inputs are interspersed with ground pins. The analog inputs all also have a similar input structure (pictured above). They appear to be simple voltage dividers. Strangely the 150K pull-down resistor is 0402 while the others are 0603. The topcodes are strange for resistors also. Maybe a commenter can share some insight. The analog inputs (after their front-end) are all connected to the TI DAQ-on-a-chip part.\n<\/p>\n<p>\nThe NI USB-6009 also has two 12 bit 150S\/s analog outputs on the lower right of the image. Around those two pins are grounds, and on the board there are a cluster of passive and active components. The signals presumably come from the TI part, but I&#8217;d have to get out a meter to check. U4 is a dual opamp and the other SOT-23-5 packages are presumably single opamps.\n<\/p>\n<p>\nThere is some other strangeness. What is part FL1 (on the far right opposite the USB connector)? What is R50? Why is it way over there? That&#8217;s a pretty serious trace-width for an un-populated part. Look at the traces near the letter &#8220;U&#8221; in USB-600x. Why do they go out of their way to put them adjacent to one another?\n<\/p>\n<p>\nAll told, it&#8217;s a pretty nice piece of hardware, I&#8217;ve had better luck with <a href=\"http:\/\/labjack.com\/\">Labjack<\/a> parts &#8211; much much better open source support, but the NI USB-6009 isn&#8217;t bad when you&#8217;ve gotta use Lab View.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>So I was handed a National Instruments USB-6009 and I had to tear it down. It&#8217;s a fairly nice four layer design, with only a few major components. The board is marked USB-600X and there is an un-populated header &#8211; can a USB-6008 be easily upgraded to a USB-6009? On the right, we see a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":846,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[37],"tags":[76,75,74,77],"_links":{"self":[{"href":"https:\/\/bardagjy.com\/index.php?rest_route=\/wp\/v2\/posts\/841"}],"collection":[{"href":"https:\/\/bardagjy.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bardagjy.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bardagjy.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bardagjy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=841"}],"version-history":[{"count":28,"href":"https:\/\/bardagjy.com\/index.php?rest_route=\/wp\/v2\/posts\/841\/revisions"}],"predecessor-version":[{"id":872,"href":"https:\/\/bardagjy.com\/index.php?rest_route=\/wp\/v2\/posts\/841\/revisions\/872"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/bardagjy.com\/index.php?rest_route=\/wp\/v2\/media\/846"}],"wp:attachment":[{"href":"https:\/\/bardagjy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=841"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bardagjy.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=841"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bardagjy.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=841"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}