#    This is the channel External Trigger Mode register which is a part of DPP_MISC/DPP_CTRL  0x1n80


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

proc GetExtTriggerMode {} {
   variable NumChans

    for {set i 0} {$i < $NumChans} {incr i} {
        variable Ch$i.ExtTriggerMode
        set Ch$i.ExtTriggerMode [ReadRegister Ch$i.ExtTriggerMode]
    }
}

proc SetExtTriggerMode {w} {
   variable NumChans

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

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

         variable Ch$i.ExtTriggerMode
         WriteRegister Ch$i.ExtTriggerMode [set Ch$i.ExtTriggerMode]
      }

}

    proc SaveExtTriggerMode {} {
       variable NumChans

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

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

    proc RestExtTriggerMode {} {
       variable NumChans

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

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

    }

proc DrawExtTriggerMode {} {
       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 Trigger Mode</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 "<select name=P$i size=1 \
       onChange=\"click_CHSETTING(document.[set Name], 'ExtTriggerMode', '$i', document.CHSETTINGS.P$i.value)\">"

   set j 0
   foreach item {Individual Neighbour Coincidence Anti-coincidence}  {
     set vl $j
     if {$vl == [set ::[set Name]::Ch$i.ExtTriggerMode]} {
        append html "<option value=$vl selected>$item</option>"
     } else {
        append html "<option value=$vl>$item</option>"
     }
     incr j
   }

   append html "</select>"

   append html  "</td>"


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



   append html  "</p>"

   return $html
}