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Including 2651A and 2657A webhelp manuals
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47 changes: 47 additions & 0 deletions WebHelpDocs/Commands_2651A/10905.html
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<html>
<head>
<title> Event log </title>
<link rel="stylesheet" type="text/css" href="stylesheet.css" />
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<div class="kpos">

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</tr>
</table>
<h4 class="heading4">Event log</h4>
<p class="bodytext">You can use the event log to view specific details about LAN triggering events.</p>
<p class="listcommand"><a id="h1945" class="jumptemplate" title="eventlog.all()" href="14756.html" target="_self">eventlog.all()</a></p>
<p class="listcommand"><a id="h1947" class="jumptemplate" title="eventlog.clear()" href="14758.html" target="_self">eventlog.clear()</a></p>
<p class="listcommand"><a id="h1948" class="jumptemplate" title="eventlog.count" href="14757.html" target="_self">eventlog.count</a></p>
<p class="listcommand"><a id="h1949" class="jumptemplate" title="eventlog.enable" href="14760.html" target="_self">eventlog.enable</a></p>
<p class="listcommand"><a id="h1946" class="jumptemplate" title="eventlog.next()" href="14761.html" target="_self">eventlog.next()</a></p>
<p class="listcommand"><a id="h17696" class="jumptemplate" title="eventlog.overwritemethod" href="14759.html" target="_self">eventlog.overwritemethod</a></p>



<br/>
<hr/>
<p class="bodytext">Copyright (c) 2007-2012, Keithley Instruments, Inc. All rights reserved.</p>
</div>
</body>

</html>
58 changes: 58 additions & 0 deletions WebHelpDocs/Commands_2651A/11382.html
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<html>
<head>
<title> Bit manipulation and logic operations </title>
<link rel="stylesheet" type="text/css" href="stylesheet.css" />
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</table>
<h4 class="heading4">Bit manipulation and logic operations</h4>
<p class="bodytext">The bit functions perform bitwise logic operations on two given numbers, and bit operations on one given number. Logic and bit operations truncate the fractional part of given numbers to make them integers.</p>
<p class="bodytext"><strong class="specialbold">Logic operations</strong></p>
<p class="bodytext">The <code class="monospace">bit.bitand()</code>, <code class="monospace">bit.bitor()</code>, and <code class="monospace">bit.bitxor()</code> functions in this group perform bitwise logic operations on two numbers. The Test Script Processor (TSP<sup class="superscript">&reg;</sup>) scripting engine performs the indicated logic operation on the binary equivalents of the two integers. This bitwise logic operation is performed on all corresponding bits of the two numbers. The result of a logic operation is returned as an integer.</p>
<p class="bodytext"><strong class="specialbold">Bit operations</strong></p>
<p class="bodytext">The rest of the functions in this group are used for operations on the bits of a given number. These functions can be used to:</p>
<ul class="listbullet2"><li class="listbullet2">Clear a bit</li><li class="listbullet2">Toggle a bit</li><li class="listbullet2">Test a bit</li><li class="listbullet2">Set a bit or bit field</li><li class="listbullet2">Retrieve the weighted value of a bit or field value</li></ul><p class="bodytext">All these functions use an index parameter to specify the bit position of the given number. The least significant bit of a given number has an index of 1, and the most significant bit has an index of 32.</p>
<p class="note"><img src="notehelp.png" alt="NOTE" height="48" width="176" vspace="0" hspace="0" align="top" border="0"><br>The Test Script Processor (TSP) scripting engine stores all numbers internally as IEEE Std 754 double-precision floating point values. The logical operations work on 32&#8209;bit integers. Any fractional bits are truncated. For numbers larger than 4294967295, only the lower 32 bits are used.</p>
<p class="spacing"></p>
<p class="listcommand"><a id="h14645" class="jumptemplate" title="bit.bitand()" href="14632.html" target="_self">bit.bitand()</a></p>
<p class="listcommand"><a id="h14646" class="jumptemplate" title="bit.bitor()" href="14634.html" target="_self">bit.bitor()</a></p>
<p class="listcommand"><a id="h662" class="jumptemplate" title="bit.bitxor()" href="14635.html" target="_self">bit.bitxor()</a></p>
<p class="listcommand"><a id="h673" class="jumptemplate" title="bit.clear()" href="14636.html" target="_self">bit.clear()</a></p>
<p class="listcommand"><a id="h667" class="jumptemplate" title="bit.get()" href="14637.html" target="_self">bit.get()</a></p>
<p class="listcommand"><a id="h668" class="jumptemplate" title="bit.getfield()" href="14638.html" target="_self">bit.getfield()</a></p>
<p class="listcommand"><a id="h669" class="jumptemplate" title="bit.set()" href="14639.html" target="_self">bit.set()</a></p>
<p class="listcommand"><a id="h670" class="jumptemplate" title="bit.setfield()" href="14640.html" target="_self">bit.setfield()</a></p>
<p class="listcommand"><a id="h671" class="jumptemplate" title="bit.test()" href="14641.html" target="_self">bit.test()</a></p>
<p class="listcommand"><a id="h672" class="jumptemplate" title="bit.toggle()" href="14642.html" target="_self">bit.toggle()</a></p>



<br/>
<hr/>
<p class="bodytext">Copyright (c) 2007-2012, Keithley Instruments, Inc. All rights reserved.</p>
</div>
</body>

</html>
80 changes: 80 additions & 0 deletions WebHelpDocs/Commands_2651A/11440.html
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<html>
<head>
<title> Autozero </title>
<link rel="stylesheet" type="text/css" href="stylesheet.css" />
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<div class="kpos">

<table class="relatedtopics aboveheading" cellpadding="0" cellspacing="0" border="0">
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<td width= "18">
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<h3 class="heading3">Autozero</h3>
<p class="bodytext">The integrating ADC of the Model 2651A uses a ratiometric A/D conversion technique. To ensure accuracy of readings, the instrument must periodically obtain fresh measurements of its internal ground and voltage reference. Separate reference and zero measurements are used for each aperture.</p>
<p class="bodytext">There are three different settings for autozero as summarized in the table below. By default, the instrument automatically checks these reference measurements whenever a signal measurement is made (AUTO). If the reference measurements are out of date when a signal measurement is made, the instrument will automatically take two more A/D conversions, one for the reference and one for the zero, before returning the result. Thus, occasionally, a measurement takes longer than normal.</p>
<p class="bodytext">This extra time can cause problems in sweeps and other test sequences in which measurement timing is critical. To avoid the extra time for the reference measurements in these situations, the OFF selection can be used to disable the automatic reference measurements. Note that with automatic reference measurements disabled, the instrument may gradually drift out of specification.</p>
<p class="bodytext">To minimize the drift, a reference and zero measurement should be made just prior to the critical test sequence. The ONCE setting can be used to force a refresh of the reference and zero measurements used for the current aperture setting.</p>
<table class="tableintopic" width="480" cellpadding="2" cellspacing="0" border="0" style="border-collapse:collapse">
<tr>
<td width="120" height="0"></td>
<td width="360" height="0"></td>
</tr>
<tr align="left" valign="top">
<td colspan="2" width="480"><p class="tableheading">Autozero settings</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #C0C0C0;" width="120"><p class="tableheadingsmall">Autozero setting</p>
</td>
<td style="border:1px solid #C0C0C0;" width="360"><p class="tableheadingsmall">Description</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #C0C0C0;" width="120"><p class="tablebodytextsmall">OFF</p>
</td>
<td style="border:1px solid #C0C0C0;" width="360"><p class="tablebodytextsmall">Turns automatic reference measurements off.</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #C0C0C0;" width="120"><p class="tablebodytextsmall">ONCE</p>
</td>
<td style="border:1px solid #C0C0C0;" width="360"><p class="tablebodytextsmall">Turns automatic reference measurements off, after immediately taking one reference and one zero measurement.</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #C0C0C0;" width="120"><p class="tablebodytextsmall">AUTO</p>
</td>
<td style="border:1px solid #C0C0C0;" width="360"><p class="tablebodytextsmall">Automatically takes new acquisitions when the Model 2651A determines reference and zero values are out-of-date.</p>
</td>
</tr>

</table>
<p class="tablebodytextsmall"></p>



<br/>
<hr/>
<p class="bodytext">Copyright (c) 2007-2012, Keithley Instruments, Inc. All rights reserved.</p>
</div>
</body>

</html>
205 changes: 205 additions & 0 deletions WebHelpDocs/Commands_2651A/11500.html
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<html>
<head>
<title> Digital I/O bit weighting </title>
<link rel="stylesheet" type="text/css" href="stylesheet.css" />
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</style>
</head>
<body>
<div class="kpos">

<table class="relatedtopics aboveheading" cellpadding="0" cellspacing="0" border="0">
<tr valign="top">
<td width= "18">
<p class="bodytext"><a href="19553.html" target="_self"><img src="125.gif" alt="Previous Topic" height="17" width="18" vspace="0" hspace="0" align="top" border="0"></a></p></td>
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</tr>
</table>
<h3 class="heading3">Digital I/O bit weighting</h3>
<p class="bodytext">Bit weighting for the digital I/O lines is shown in the following table.</p>
<table class="tableintopic" width="324" cellpadding="2" cellspacing="0" border="0" style="border-collapse:collapse">
<tr>
<td width="44" height="0"></td>
<td width="44" height="0"></td>
<td width="102" height="0"></td>
<td width="132" height="0"></td>
</tr>
<tr align="left" valign="top">
<th style="border-bottom:1px solid #010101;" colspan="4" width="324"><p class="tableheading">Digital bit weight</p>
</th>
</tr>
<tr align="left" valign="top">
<th style="border:1px solid #010101;" width="45"><p class="tableheadingsmall">Line #</p>
</th>
<th style="border:1px solid #010101;" width="45"><p class="tableheadingsmall">Bit</p>
</th>
<th style="border:1px solid #010101;" width="103"><p class="tableheadingsmall">Decimal weighting</p>
</th>
<th style="border:1px solid #010101;" width="132"><p class="tableheadingsmall">Hexadecimal weighting</p>
</th>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">1</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B1</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">1</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0001</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">2</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B2</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">2</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0002</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">3</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B3</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">4</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0004</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">4</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B4</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">8</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0008</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">5</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B5</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">16</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0010</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">6</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B6</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">32</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0020</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">7</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B7</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">64</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0040</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">8</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B8</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">128</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0080</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">9</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B9</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">256</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0100</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">10</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B10</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">512</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0200</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">11</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B11</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">1024</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0400</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">12</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B12</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">2048</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x0800</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">13</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B13</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">4096</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x1000</p>
</td>
</tr>
<tr align="left" valign="top">
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">14</p>
</td>
<td style="border:1px solid #010101;" width="45"><p class="tablebodytextsmall">B14</p>
</td>
<td style="border:1px solid #010101;" width="103"><p class="tablebodytextsmall">8192</p>
</td>
<td style="border:1px solid #010101;" width="132"><p class="tablebodytextsmall">0x2000</p>
</td>
</tr>

</table>
<p class="tablebodytextsmall"></p>



<br/>
<hr/>
<p class="bodytext">Copyright (c) 2007-2012, Keithley Instruments, Inc. All rights reserved.</p>
</div>
</body>

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