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Author: <a href="mailto:Dennis Armstrong <dennis.armstrong@psi.ch>?subject=http://epics.web.psi.ch%2Fsoftware%2Fvme%2FVHQ.php">Dennis Armstrong</a><br>
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Phone: +41 56 310 5109<br>
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Updated: 12.6.2007<br>
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<br><a
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href="http://epics.web.psi.ch/software/vme/%2Fsoftware%2Fvme%2FVHQ.php?forprint">Printer friendly version</a>
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<a name="top"></a><center><h1>VHQ Programmable High Voltage Power Supply</h1></center>
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<h2>Introduction</h2>
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<p>The iseg Spezialelektronik GmbH company specialises in the development and production of High Voltage Power Supplies for Industry and Research.<br>
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This is based on 20 years of experience in the development and
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use of technologies of modern High Voltage generation.</p>
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<p>These VME hardware modules are VME High Voltage power supplies in 2 slot width. They are available in 1 channel and 2 channel versions in same dimensions. This application supports the 2 channel versions.<br>
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It has a LCD display to show the voltage or current.<br>
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It supports a variable rate of change of output voltage, and has switchable polarity. It includes integrated protection and control circuits with
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output overload and short circuit protection. It has a SHV connector on the front side for High Voltage connection.<br>
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Full software control of parameters are available via the VMEbus.</p>
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<p>The full specification is available on the iseg Spezialelektronik GmbH company website <a href="http://www.iseg-hv.de/download.php/483/file_url_en/vhqx0x_eng.pdf">[Manuals: VHQ STANDARD]</a> (499,7 kB).</p>
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<h2>Setup</h2>
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<p>There are 4 templates available for the different VME modules:-</p>
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<ul>
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<li>VHQ202M.template</li>
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<li>VHQ203M.template</li>
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<li>VHQ204L.template</li>
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<li>VHQ205L.template</li>
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</ul>
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<p>The simplest method to obtain the correct version of the template file is to use the
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"getCommons" program. This requires a file called COMMON_FILES in your development directory.</p>
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<p>The COMMON_FILES file has the following structure:</p>
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<font color="blue">
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<tt>
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#####################################################<br>
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# File name CVS Location CVS Tag<br>
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####################################################<br>
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VHQ202M.template VHQ HEAD<br>
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</tt>
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</font>
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<p>Create a substitution file and define the macro parameters needed</p>
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<p>
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Five macronames have been defined for these templates:-
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</p>
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<table border="1">
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<tbody><tr bgcolor="#e3eaf6"><td>Macroname</td><td>Typical Values</td><td>Description</td></tr>
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<tr><td>DEVICE</td><td>EXAMPLE-202M</td><td>The device name used to generate the PV names</td></tr>
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<tr><td>cardN</td><td>0</td><td>Card number in the VME Crate </td></tr>
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<tr><td>Mh</td><td>3000</td><td>This value depends on the M-h option for the template which is used.<br>> See the notes in the example substitution file</td></tr>
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<tr><td>HOPRVA</td><td>2000</td><td>High Operating Range for Voltage A<br>> See the notes in the example substitution file</td></tr>
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<tr><td>HOPRVB</td><td>2000</td><td>High Operating Range for Voltage B<br>> See the notes in the example substitution file</td></tr>
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<tr><td>SIMM</td><td>NO</td><td>Default is NO, for Simulation use YES</td></tr>
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<tr><td>SIML</td><td> VHQ-TST </td><td>PV name for Simulation mode.<br>> With the default of "NO", SIML pv link name is ignored</td></tr></tbody>
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</table>
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<h2>Graphical Interface</h2>
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<p>There is a MEDM engineering gui defined for this application, <b>G_VHQ.adl</b>.</p>
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<table border="0">
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<tbody><tr>
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<td><center><img src="VHQ.jpg" alt="VHQ engineering GUI"></center></td>
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<td>
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It can be started with the following invocation:-
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<p>
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medm -x -macro <font color="red">VHQ-MODEL</font>=VHQ202M,<font color="red">DEVICE</font>=EXAMPLE-202M <b>G_VHQ.adl</b>
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</p>
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<p>with correct values for the macro names <font color="red">VHQ-MODEL</font> and <font color="red">DEVICE</font></p>
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<p><font color="red">VHQ-MODEL</font> macro can take the following names VHQ202M, VHQ203M, VHQ204L or VHQ205L</p>
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<p>For each channel the required voltage is selected on the thumbwheel switch.</p>
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<p>The required voltage ramp speed can be selected by entering its value.</p>
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<p>The required current soft limit is also selectable.</p>
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</td>
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</tr>
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<tr>
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<td><p>The GUI shows when the voltage selected has exceeded the hard voltage limit by displaying a yellow background around the hard limit information.</p>
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<p>Select a lower voltage on the wheelswitch or change the hard limit on the VME card.</p></td>
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<td><img src="VHQ_slimit.jpg" alt="VHQ engineering limit error GUI"></td>
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</tr>
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<tr>
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<td><img src="VHQ_strip.jpg" alt="VHQ engineering limit error GUI"></td>
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<td><p>A striptool like display is started by the Strip button on the GUI. This display shows the Voltage, Current and Power supplied by the selected channel.</p></td>
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</tr></tbody>
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</table>
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<h2>Alarms</h2>
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<p>For each VME Module the following alarms are defined in the alh template:-</p>
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<ul>
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<li><font color="red">$(DEVICE):ChanErr-A</font> - Error on Channel A.</li>
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<li><font color="red">$(DEVICE):ChanErr-B</font> - Error on Channel B.</li>
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<li><font color="red">$(DEVICE):Actual-VA</font> - Channel A Voltage exceeded limit.</li>
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<li><font color="red">$(DEVICE):Actual-IA</font> - Channel A Current exceeded limit.</li>
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<li><font color="red">$(DEVICE):Actual-VB</font> - Channel B Voltage exceeded limit.</li>
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<li><font color="red">$(DEVICE):Actual-IB</font> - Channel B Current exceeded limit.</li>
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</ul>
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<p>When used in an application the alh alarm file must be created using the correct device names.</p>
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<h2>Changelog</h2>
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<p>Changes to the software are shown here <a href="VHQ_Changelog.html">Software Changelog</a>.</p>
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<hr>
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<address><a href="mailto:dennis.armstrong@psi.ch">Dennis Armstrong</a></address>
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<!-- Created: Fri Apr 13 11:44:06 CEST 2007 -->
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<!-- hhmts start -->
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Last modified: Tue Jun 12 10:18:13 CEST 2007
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<span class="printlayout">Author: Dennis Armstrong Phone: +41 56 310 5109 Email: dennis.armstrong@psi.ch Updated: 12.6.2007 </span>
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Source: /afs/psi.ch/project/epics/webhosting/software/vme/VHQ.php
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