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</style><article id="node-358074" class="node node-logentry article ia-n clearfix" role="article"><header class="node-header"><h1 class="node-title" rel="nofollow">
<a href="https://logbooks.jlab.org/entry/3285330" rel="bookmark">First look at temparature and vlotage stability of BCAL</a>
</h1>
</header><div class="date-vitals">
<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/3285330" class="lognumber" data-lognumber="3285330">3285330</a>. Submitted by <a href="https://logbooks.jlab.org/user/dalton">dalton</a> on <time datetime="2014-05-06T11:29:02-0400" pubdate="pubdate">Tue, 05/06/2014 - 11:29</time>. </p>
<table class="field-vitals"><tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/hdbcal">HDBCAL</a> <a href="https://logbooks.jlab.org/book/hdlog">HDLOG</a></td></tr><tr><th>Entry Makers: </th><td>dalton</td></tr></table></div>
<div class="logentry node-content">
<p>I monitored the epics data for the some BCAL temparature and voltages overnight. Below are some plots which show these data.</p>
<p>Looking at the upstream and the downstream temperatures, each end moves together and independently of the other end. The period of the sawtooth is approximately 23 minutes for downstream and 20 minutes for upstream.</p>
<p>The voltages don't show drift but show random noise at the milliVolt level.</p>
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<div class="image-wrapper"><img class="image-style-plentybig" src="cid:8cbc5d3015153253feb9e725b9f6b2ec@logbooks.jlab.org" width="960" height="261" alt="" title="Temp of selected BCAL RTDs overnight" /></div> <div class="image-wrapper"><img class="image-style-plentybig" src="cid:7611ee023d3c6ef98e4b345e314d9533@logbooks.jlab.org" width="960" height="261" alt="" title="Temp of selected BCAL RTDs this morning" /></div> <div class="image-wrapper"><img class="image-style-plentybig" src="cid:23716765f1e7824db4e816620404eaa0@logbooks.jlab.org" width="960" height="412" alt="" title="Voltage of selected BCAL channels this morning" /></div> <div class="image-wrapper"><img class="image-style-plentybig" src="cid:3aea115067f2ca5db0ceaa30f1d44b7d@logbooks.jlab.org" width="960" height="412" alt="" title="Voltage of BCAL channel zoom" /></div> </div>
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