#    This is the channel PSD Threshold register  0x1n78



    for {set i 0} {$i < $NumChans} {incr i} {
        variable Ch$i.PSDThreshold 0
    }

proc GetPSDThreshold {} {
   variable NumChans

    for {set i 0} {$i < $NumChans} {incr i} {
        variable Ch$i.PSDThreshold
        set Ch$i.PSDThreshold [expr [ReadRegister Ch$i.PSDThreshold] / 1024]
    }
}

proc SetPSDThreshold {w} {
   variable NumChans

      for {set i 0} {$i < $NumChans} {incr i} {

         if {$w < 8 && $w != $i} {continue}

         variable Ch$i.PSDThreshold
         WriteRegister Ch$i.PSDThreshold [expr [set Ch$i.PSDThreshold] * 1024]
      }

}

    proc SavePSDThreshold {} {
   variable NumChans

      for {set i 0} {$i < $NumChans} {incr i} {

           DBSetValue Ch$i.PSDThreshold [ReadRegister Ch$i.PSDThreshold]
      }
    }

    proc RestPSDThreshold {} {
   variable NumChans

      for {set i 0} {$i < $NumChans} {incr i} {

           variable Ch$i.PSDThreshold
           set Ch$i.PSDThreshold  [DBGetValue Ch$i.PSDThreshold]
           WriteRegister Ch$i.PSDThreshold  [DBGetValue Ch$i.PSDThreshold]
      }

    }

proc DrawPSDThreshold {} {
   variable NumChans
   variable Name

   set html ""

   append html  "<p align=center>"
   append html  "<table cellpadding=0 cellspacing=0 border=1>"

   append html "<tr>"
   append html  "<td  align=center width=10%>Channel</td>"
   append html  "<td  align=center width=90%>Channel n PSD Threshold (PSD 0 => 1)</td>"
   append html  "</tr>"

   for {set i 0} {$i < $NumChans} {incr i} {

   append html "<tr>"
   append html "<td align=center width=10%>$i</td>"

   append html "<td align=center width=90%>"

     append html "<input type=text name=P$i size=6 value=[set ::[set  Name]::Ch$i.PSDThreshold]  \
          onMouseOver=\"activateEntry(document.CHSETTINGS.P$i)\" \  
              onChange=\"click_CHSETTING(document.[set  Name], 'PSDThreshold', '$i', document.CHSETTINGS.P$i.value)\">"

   append html  "</td>"
   append html  "</tr>"
}

   append html  "</table>"
   append html  "</p>"

   return $html
}