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