<p> I've added the power supply change document.</p>
<p>Please have a look and let me know if it requires further clarification.</p>
<p>I have ordered some plastic "pot twiddlers".</p>
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<p>I have run a simple test with the four FEE64 here + detector.</p>
<p>The sequence was :- </p>
<p>Run the system with filtered PSU and record FWHM for 1.4.L for each of the four FEE64 boards.</p>
<p>Replace the PSU with a standard but with outputs set as per the attachement.</p>
<p>Results were approx 1.5 x worse.</p>
<p>Replace filtered PSU..... back as expected.</p>
<h1>Addition: For Filter PSU only :- Set +5v to +6v when the FEE64 is not attached.</h1>
<p>This is required as the extar impedance of the filter drops the voltage too much by the time it reaches the FEE64.</p> |