{"id":2101,"date":"2018-06-04T17:34:24","date_gmt":"2018-06-05T00:34:24","guid":{"rendered":""},"modified":"2025-07-25T09:55:15","modified_gmt":"2025-07-25T16:55:15","slug":"2101","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/2101","title":{"rendered":"Digital Control Unit (DCU) Troubleshooting and FAQs"},"content":{"rendered":"<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"\/product\/digital-control-unit\/\">Digital Control Unit<\/a> (<nobr>DCU-BTD<\/nobr>)<\/h3>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p><a href=\"\/manuals\/DCU-BTD\">Specifications and User Guide<\/a><\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.vernier.com\/wp-content\/uploads\/2019\/11\/product.dcu-btd._hero.001-scaled.jpg\" alt=\"\"\/><\/figure>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Which Model DCU Do I Have?<\/h3>\n<p>There have been three Digital Control Unit (DCU) models over the years. The current model (shown above) is black, rectangular, and has a screw terminal for each of the output lines, as well as separate pin connectors for a servo motor.<\/p>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:85%\">\n<p>The previous models were white, square, and used a 9-pin serial connection for output. Students used a serial cable to connect the DCU to their circuits, with each wire in the cable corresponding to a different line\/pin; each cable was labeled, identifying which color wire is connected to each line\/pin.<\/p>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:15%\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"100\" height=\"100\" src=\"https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2018\/06\/dcu-btd.jpg\" alt=\"\" class=\"wp-image-25110\" srcset=\"https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2018\/06\/dcu-btd.jpg 100w, https:\/\/www.vernier.com\/til\/wp-content\/uploads\/sites\/2\/2018\/06\/dcu-btd-90x90.jpg 90w\" sizes=\"auto, (max-width: 100px) 100vw, 100px\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">General Information<\/h3>\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<style>.kt-accordion-id2101_619c91-9e12 .kt-accordion-inner-wrap{column-gap:var(--global-kb-gap-md, 2rem);row-gap:8px;}.kt-accordion-id2101_619c91-9e12 .kt-accordion-panel-inner{border-top:1px solid #f79b2e;border-right:1px solid #f79b2e;border-bottom:1px solid #f79b2e;border-left:1px solid #f79b2e;padding-top:10px;padding-right:10px;padding-bottom:10px;padding-left:10px;}.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:1px solid #cdcdc9;border-right:1px solid #cdcdc9;border-bottom:1px solid #cdcdc9;border-left:1px solid #cdcdc9;border-top-left-radius:2px;border-top-right-radius:2px;border-bottom-right-radius:2px;border-bottom-left-radius:2px;background:#cce8ea;font-size:18px;line-height:24px;color:#007377;padding-top:10px;padding-right:14px;padding-bottom:10px;padding-left:14px;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap .kt-blocks-accordion-icon-trigger:before{background:#007377;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger{background:#007377;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-icon-trigger:before{background:#cce8ea;}.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id2101_619c91-9e12 .kt-blocks-accordion-header:focus-visible{color:#007377;background:#e6e6e4;border-top:1px solid #66bac0;border-right:1px solid #66bac0;border-bottom:1px solid #66bac0;border-left:1px solid #66bac0;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion--visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle ) .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#007377;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger, body:not(.hide-focus-outline) .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger{background:#007377;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:hover .kt-blocks-accordion-icon-trigger:before, body:not(.hide-focus-outline) .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:after, body:not(.hide-focus-outline) .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible .kt-blocks-accordion-icon-trigger:before{background:#e6e6e4;}.kt-accordion-id2101_619c91-9e12 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{color:#f79b2e;background:#444444;border-top:1px solid #f79b2e;border-right:1px solid #f79b2e;border-bottom:1px solid #f79b2e;border-left:1px solid #f79b2e;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basiccircle ):not( .kt-accodion-icon-style-xclosecircle ):not( .kt-accodion-icon-style-arrowcircle )  > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:#f79b2e;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger{background:#f79b2e;}.kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:after, .kt-accordion-id2101_619c91-9e12:not( .kt-accodion-icon-style-basic ):not( .kt-accodion-icon-style-xclose ):not( .kt-accodion-icon-style-arrow ) .kt-blocks-accordion-header.kt-accordion-panel-active .kt-blocks-accordion-icon-trigger:before{background:#444444;}@media all and (max-width: 1024px){.kt-accordion-id2101_619c91-9e12 .kt-accordion-panel-inner{border-top:1px solid #f79b2e;border-right:1px solid #f79b2e;border-bottom:1px solid #f79b2e;border-left:1px solid #f79b2e;}}@media all and (max-width: 1024px){.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:1px solid #cdcdc9;border-right:1px solid #cdcdc9;border-bottom:1px solid #cdcdc9;border-left:1px solid #cdcdc9;}}@media all and (max-width: 1024px){.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id2101_619c91-9e12 .kt-blocks-accordion-header:focus-visible{border-top:1px solid #66bac0;border-right:1px solid #66bac0;border-bottom:1px solid #66bac0;border-left:1px solid #66bac0;}}@media all and (max-width: 1024px){.kt-accordion-id2101_619c91-9e12 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:1px solid #f79b2e;border-right:1px solid #f79b2e;border-bottom:1px solid #f79b2e;border-left:1px solid #f79b2e;}}@media all and (max-width: 767px){.kt-accordion-id2101_619c91-9e12 .kt-accordion-inner-wrap{display:block;}.kt-accordion-id2101_619c91-9e12 .kt-accordion-inner-wrap .kt-accordion-pane:not(:first-child){margin-top:8px;}.kt-accordion-id2101_619c91-9e12 .kt-accordion-panel-inner{border-top:1px solid #f79b2e;border-right:1px solid #f79b2e;border-bottom:1px solid #f79b2e;border-left:1px solid #f79b2e;}.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header{border-top:1px solid #cdcdc9;border-right:1px solid #cdcdc9;border-bottom:1px solid #cdcdc9;border-left:1px solid #cdcdc9;}.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header:hover, \n\t\t\t\tbody:not(.hide-focus-outline) .kt-accordion-id2101_619c91-9e12 .kt-blocks-accordion-header:focus-visible{border-top:1px solid #66bac0;border-right:1px solid #66bac0;border-bottom:1px solid #66bac0;border-left:1px solid #66bac0;}.kt-accordion-id2101_619c91-9e12 .kt-accordion-header-wrap .kt-blocks-accordion-header:focus-visible,\n\t\t\t\t.kt-accordion-id2101_619c91-9e12 > .kt-accordion-inner-wrap > .wp-block-kadence-pane > .kt-accordion-header-wrap > .kt-blocks-accordion-header.kt-accordion-panel-active{border-top:1px solid #f79b2e;border-right:1px solid #f79b2e;border-bottom:1px solid #f79b2e;border-left:1px solid #f79b2e;}}<\/style>\n<div class=\"wp-block-kadence-accordion alignnone\">\n<div class=\"kt-accordion-wrap kt-accordion-id2101_619c91-9e12 kt-accordion-has-3-panes kt-active-pane-0 kt-accordion-block kt-pane-header-alignment-left kt-accodion-icon-style-xclose kt-accodion-icon-side-right\" style=\"max-width:none\">\n<div class=\"kt-accordion-inner-wrap\" data-allow-multiple-open=\"false\" data-start-open=\"none\">\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-1 kt-pane2101_527b22-2213\">\n<div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\"><strong>USING LOGGER PRO<\/strong><\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div>\n<div class=\"kt-accordion-panel kt-accordion-panel-hidden\">\n<div class=\"kt-accordion-panel-inner\">\n<h4 class=\"wp-block-heading\"><strong>USING LOGGER <em>PRO<\/em><\/strong><\/h4>\n<p>The Logger <i>Pro<\/i> Digital Out feature allows you to control up to three output lines of a DCU connected to the DIG 1 or DIG 2 port of a LabQuest or LabPro. Each of the three lines can be individually controlled based on user-configured conditional statements. This allows you to develop projects that turn DC motors, lamps, LEDs, buzzers, and other DC electrical devices on and off based on sensor readings, time, or calculated columns.<\/p>\n<p>To reach the Digital Out dialog box, connect the DCU and at least one other Vernier sensor to the data-collection interface. Choose Set Up Sensors from the Experiment menu and select your interface. Click the DIG\/SONIC button and select Digital Out from the drop-down menu.<\/p>\n<p><b>Note<\/b>: Logger <i>Pro<\/i> version 3.8.6 or later is required to use multiple output lines on the DCU at the same time. Earlier versions of Logger <i>Pro<\/i> could only activate one output line at a time.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-2 kt-pane2101_a6fdf9-b414\">\n<div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\"><strong>USING LABQUEST 2 or LABQUEST 3<\/strong><\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div>\n<div class=\"kt-accordion-panel kt-accordion-panel-hidden\">\n<div class=\"kt-accordion-panel-inner\">\n<h4 class=\"wp-block-heading\"><strong>USING LABQUEST 2 or LABQUEST 3<\/strong><\/h4>\n<p>LabQuest 2 (version 2.7 or newer) and LabQuest 3 (all versions) have support for the DCU built in and you can control digital lines without needing a computer.<\/p>\n<p><b>Note<\/b>: Utilizing the servo motor output of the current DCU model is only available when controlling the DCU via LabVIEW.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"wp-block-kadence-pane kt-accordion-pane kt-accordion-pane-3 kt-pane2101_3449ae-0417\">\n<div class=\"kt-accordion-header-wrap\"><button class=\"kt-blocks-accordion-header kt-acccordion-button-label-show\" type=\"button\"><span class=\"kt-blocks-accordion-title-wrap\"><span class=\"kt-blocks-accordion-title\"><strong>USING OTHER SOFTWARE<\/strong><\/span><\/span><span class=\"kt-blocks-accordion-icon-trigger\"><\/span><\/button><\/div>\n<div class=\"kt-accordion-panel kt-accordion-panel-hidden\">\n<div class=\"kt-accordion-panel-inner\">\n<h4 class=\"wp-block-heading\"><strong>USING ARDUINO<\/strong><\/h4>\n<p>Users wanting to control the DCU with Arduino can refer to the Engineering section of the Vernier website at <a href=\"http:\/\/www.vernier.com\/engineering\/arduino\">www.vernier.com\/engineering\/arduino<\/a><\/p>\n<h4 class=\"wp-block-heading\"><strong>LabVIEW and TI CALCULATORS<\/strong><\/h4>\n<p>Users wanting to control the DCU using a LabPro with LabVIEW or with a TI graphing calculator can refer to the previous version of the DCU manual at <a href=\"http:\/\/www.vernier.com\/files\/manuals\/dcu-btd_20050425.pdf\">www.vernier.com\/files\/manuals\/dcu-btd_20050425.pdf<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Troubleshooting<\/h3>\n<ul class=\"wp-block-list\">\n<li><strong>Primary Test:<\/strong> When you connect the DCU to an interface, does the green EN LED light up? Is external power supplied to the DCU? If you are using the current model, the blue XP LED should light up.<\/li>\n<li><strong>Secondary Test:<\/strong> Does the DCU appear in the Set Up Sensor dialog box? Some Digital Control Units are not auto-ID. If your DCU has not been identified by Logger <i>Pro<\/i> and therefore does not show up under the DIG\/SONIC button, you will need to set it up manually. To do this, click on the DIG\/SONIC button and select Choose Sensor \u25b6 Digital Control Unit.<\/li>\n<li><strong>Tertiary Test:<\/strong> When you test the output lines via Logger <i>Pro<\/i>, do the correct LEDs light up? In the Digital Out dialog box, you can test 3 output lines of the DCU by selecting the check box for Line 1 On, Line 2 On, and\/or Line 3 On. The LEDs on the circuit board extending from the DCU will turn on when the line is on.<\/li>\n<li><strong>Quaternary Test:<\/strong> Is your circuit set up correctly? Carefully review the circuit the DCU is turning on\/off. Are all the connections secure? Are the components connected correctly (e.g., current flowing in the correct direction through diodes)? Does it require more power or current than the DCU can provide? If you are using an older 9-pin serial DCU, check to make sure that you have wired the correct line into your circuit.<\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Usage Tips<\/h3>\n<ul class=\"wp-block-list\">\n<li>In general, you can connect any electrical device that runs on DC electricity at a voltage that matches your power supply. The DCU output voltage can range from 5 to 12 V, depending on the DCU power supply. You can find thousands of different 5 to 12 V devices at most hobby and electronic stores, such as Mouser or DigiKey.<\/li>\n<li>The Digital Out feature is unable to scan all data at fast data-collection rates. This may mean that peaks or valleys that fall above or below the user-defined comparison value, but are of very short duration, might not activate or deactivate a line as configured. In such a case, LabVIEW provides higher rates and response times.<\/li>\n<\/ul>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/CBndYCwxfZw\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Additional Troubleshooting<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/til\/825\/\">Where do I find electronic components for use with the Digital Control Unit (DCU)?<\/a><\/li>\n<li><a href=\"\/til\/627\/\">Can I use the DCU with the CBL 2 or LabPro?<\/a><\/li>\n<li><a href=\"\/til\/2419\/\">When I set up my Digital Control Unit, the Digital Out option is disabled. What should I do? (Logger <i>Pro<\/i>)<\/a><\/li>\n<li><a href=\"\/til\/785\/\">When I plug the radiation monitor into LabPro it stops working. (especially if you have been using DCU).<\/a><\/li>\n<li><a href=\"\/til\/2928\/\">Do you have an SDK or API for your sensors?<\/a><\/li>\n<li><a href=\"\/til\/3236\/\">What power supplies can I use with the DCU?<\/a><\/li>\n<li><a href=\"\/til\/3340\/\">National Instruments LabVIEW Troubleshooting and FAQs<\/a><\/li>\n<li><a href=\"\/til\/1908\/\">What sensors do not work with Go!Link?<\/a><\/li>\n<li><a href=\"\/til\/2107\/\">What are the differences between Logger <i>Pro<\/i> and Logger Lite?<\/a><\/li>\n<li><a href=\"\/til\/3495\/\">How can I control AC devices with the Digital Control Unit?<\/a><\/li>\n<li><a href=\"\/til\/3712\/\">Digital sensor does not automatically identify when connected to LabQuest after using the DCU.<\/a><\/li>\n<li><a href=\"\/til\/3818\/\">How fast does the DCU respond to data?<\/a><\/li>\n<li><a href=\"\/til\/4204\/\">Can I use Go Direct sensors with a Digital Control Unit?<\/a><\/li>\n<li><a href=\"\/til\/4224\/\">DCU Power Output Pack (DCU-POP) Troubleshooting and FAQs<\/a><\/li>\n<li><a href=\"\/til\/4231\/\">How do you wire a stepper motor to the DCU?<\/a><\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Specifications<\/h3>\n<ul class=\"wp-block-list\">\n<li>Output lines: 6 (a total of 3 lines with independent control)<\/li>\n<li>Max output current per line: 600 mA<\/li>\n<li>Input supply voltage: 4 to 12 V<\/li>\n<li>Output voltage: Set by input supply voltage<\/li>\n<li>Input Supply Options:<br \/>\u26ac LabQuest Power Supply (order code LQ-PS): 5 V DC, regulated, 1.5 A<br \/>\u26ac LabQuest 3 Power Supply (order code LQ3-PS): 5 V DC, regulated, 2.5 A<br \/>\u26ac LabPro Power Supply (order code IPS): 6 V DC, regulated, 600 mA<br \/>\u26ac ULI Power Supply (order code ULI-PS): 9 V, unregulated, 1000 mA<br \/>\u26ac Battery power supply: one lantern battery or four to eight 1.5 V cells connected in series.<br \/>\u26ac See also, <a href=\"\/til\/3236\/\">What power supplies can I use with the DCU?<\/a><\/li>\n<\/ul>\n<p>The DCU can supply 600 mA of current on each line, but no more than 1800 mA total.<\/p>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Related Products<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/product\/dcu-terminal-plug-kit\/\">DCU Terminal Plug Kit<\/a> (<nobr>DCU-PLUG<\/nobr>)<\/li>\n<li><a href=\"\/product\/digital-control-unit-power-output-kit\/\">Digital Control Unit Power Output Kit<\/a> (<nobr>DCU-POP<\/nobr>)<\/li>\n<li><a href=\"\/product\/labquest-power-supply\/\">LabQuest<sup>&reg;<\/sup> Power Supply<\/a> (<nobr>LQ3-PS<\/nobr>)<\/li>\n<li><a href=\"\/product\/vernier-ac-adapter\/\">Power Supply for LabPro, WDSS, and Stir Station<\/a> (<nobr>IPS<\/nobr>)<\/li>\n<li><a href=\"\/product\/sensordaq\/\">SensorDAQ<\/a> (<nobr>SDAQ<\/nobr>)<\/li>\n<li><a href=\"\/product\/labquest-3\/\">LabQuest 3<\/a> (<nobr>LABQ3<\/nobr>)<\/li>\n<li><a href=\"\/product\/labquest-mini\/\">LabQuest Mini<\/a> (<nobr>LQ-MINI<\/nobr>)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>Specifications and User Guide Which Model DCU Do I Have? There have been three Digital Control Unit (DCU) models over the years. The current model&#8230;<\/p>\n","protected":false},"author":86433,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[509,3420,720,1145,3419],"class_list":["post-2101","post","type-post","status-publish","format-standard","hentry","tag-dcu-btd","tag-dcumain","tag-maintil","tag-output","tag-stem"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/86433"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=2101"}],"version-history":[{"count":0,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/2101\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=2101"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=2101"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=2101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}