#    This is the Channel ZS_THRES register  0x1n24



    for {set i 0} {$i < 8} {incr i} {
        variable Ch$i.ZSThresh 0
        variable Ch$i.ZSThresh_Logic 0
    }

proc GetZSThresh {} {

    for {set i 0} {$i < 8} {incr i} {
        variable Ch$i.ZSThresh
        variable Ch$i.ZSThresh_Logic
        set Ch$i.ZSThresh [expr [ReadRegister Ch$i.ZSThresh] & 0x0fff]
        set Ch$i.ZSThresh_Logic [expr ([ReadRegister Ch$i.ZSThresh] >> 31) & 1]
    }
}

proc SetZSThresh {w} {

      for {set i 0} {$i < 8} {incr i} {

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

         variable Ch$i.ZSThresh
         variable Ch$i.ZSThresh_Logic
         WriteRegister Ch$i.ZSThresh [expr [set Ch$i.ZSThresh] + ([set Ch$i.ZSThresh_Logic] << 31)]
      }

}

    proc SaveZSThresh {} {

      for {set i 0} {$i < 8} {incr i} {

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

    proc RestZSThresh {} {

      for {set i 0} {$i < 8} {incr i} {
           variable Ch$i.ZSThresh
           variable Ch$i.ZSThresh_Logic

           set Ch$i.ZSThresh [expr [DBGetValue Ch$i.ZSThresh] & 0x0fff]
           set Ch$i.ZSThresh_Logic [expr ([DBGetValue Ch$i.ZSThresh] >> 31) & 1]
      }
      SetZSThresh 8
    }

proc DrawZSThresh {} {

   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=20%>Channel</td>"
   append html  "<td  align=center width=50%>Channel n Threshold</td>"
   append html  "<td  align=center width=30%>Channel n Logic</td>"
   append html  "</tr>"

for {set i 0} {$i < 8} {incr i} {

   append html "<tr>"
   append html "<td align=center width=20%>$i</td>"
   append html "<td align=center width=50%><div id=\"Offset$i\"></div>&nbsp;</td>"

   append html "<td  align=center width=30%>"

   append html "<select name=P$i size=1 \
       onChange=\"click_CHSETTING(document.V1720, 'ZSThresh_Logic', '$i', document.CHSETTINGS.P$i.value)\">"

   set j 0
   foreach item {"Positive" "Negative"}  {
     if {$j == [set ::V1720::Ch$i.ZSThresh_Logic]} {
        append html "<option value=$j selected>$item</option>"
     } else {
        append html "<option value=$j>$item</option>"
     }
     incr j
   }

   append html "</select>"

   append html "</td>"

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

   append html "<script>"

   append html "SliderID('ZSThresh');"

for {set i 0} {$i < 8} {incr i} {
   append html "SelectSlider($i); SetSlider(0,16384,25,120);"
   append html "MakeSlider(document.V1720, $i, [set ::V1720::Ch$i.ZSThresh]);"
}

   append html "</script>"

   append html  "</p>"

   return $html
}