54 lines
2.0 KiB
HTML
54 lines
2.0 KiB
HTML
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<!doctype HTML public "-//W3C//DTD HTML 4.0 Frameset//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
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<meta name="generator" content="Adobe RoboHelp 9">
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<title>2-wire mode</title>
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<link rel="StyleSheet" href="HtmlHelp.css" type="text/css">
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</head>
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<body class="ns-0 ltr">
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<div id="globalWrapper">
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<div id="column-content">
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<div id="content">
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<h1 class="firstHeading">2-wire mode</h1>
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<div id="bodyContent">
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<p id="siteSub">In this mode, the control inputs are internally
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'pulled up' to +5V DC via a 4.7kOhm resistor. Therefore,
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no external voltage source is needed to create contact
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closure to ground (for switches such as mute buttons)
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or resistance to ground (for other multi-state or continuous
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controls such as <a href="MAINPresets.htm">Parameter Presets</a>
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or faders).  </p>
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<h2>BLU-80/BLU-800/BLU-100 Series</h2>
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<p>The diagram below shows connections for an external
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switch, resistor ladder and potentiometer.  Two 'common'
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ground connections are provided using the 2 'C' pins to
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the left of the control inputs.</p>
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<p><img src="London_installation_Guide_13.png" alt="" style="border: none;" width="284" height="465" border="0"></p>
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<p style="font-weight: bold;"><br>
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Table of resistor values for use with Parameter Presets
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or source selectors.</p>
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<p><img src="ResistorValues.JPG" alt="Image:ResistorValues.JPG " title="Image:ResistorValues.JPG " style="border-width: 2px;
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border-style: solid; margin-top: 0px; margin-bottom: 0px;
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margin-left: 0px; margin-right: 0px;" width="528" height="268" border="2"></p>
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<p>A 47kOhm-log potentiometer connected between a control
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input and common will allow parameters to be controlled
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linearly.</p>
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</div>
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</div>
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</div>
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</div>
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<p style="margin-bottom: 0;"> </p>
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</body>
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</html>
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