   <td class="paramtype">in&#160;</td>
          <td class="paramname"><em>in</em>&#160;</td>
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          <td>)</td>
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<p>PMD loading. </p>
<p>PMD loading</p>
<p>Modes of operation: PMD can either be set ('set' mode) or drawn from an appropriate statistical distribution ('random' mode). In 'set' mode, for a 2-mode fiber, you specify the modulus of the DGD vector (DGD property), an