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  Created		  "Fri Aug 18 11:51:05 2000"
  Creator		  "The MathWorks Inc."
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  BlockDefaults {
    Orientation		    "right"
    ForegroundColor	    "black"
    BackgroundColor	    "white"
    DropShadow		    off
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    FontName		    "Helvetica"
    FontSize		    10
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    Block {
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      SaturateOnIntegerOverflow	on
      ZeroCross		      on
      SampleTime	      "-1"
    }
    Block {
      BlockType		      Clock
      DisplayTime	      off
    }
    Block {
      BlockType		      Constant
      Value		      "1"
      VectorParams1D	      on
      OutDataTypeMode	      "Inherit from 'Constant value'"
      OutDataType	      "sfix(16)"
      ConRadixGroup	      "Use specified scaling"
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    Block {
      BlockType		      Mux
      Inputs		      "4"
      DisplayOption	      "none"
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      SignalType	      "auto"
      SamplingMode	      "auto"
      OutputWhenDisabled      "held"
      InitialOutput	      "[]"
    }
    Block {
      BlockType		      RelationalOperator
      Operator		      ">="
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      LogicOutDataTypeMode    "Logical (see Configuration Parameters: Optimiza"
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      LogicDataType	      "uint(8)"
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    }
    Block {
      BlockType		      Saturate
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    }
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      MaxDataPoints	      "5000"
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      SampleTime	      "0"
    }
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      BlockType		      Sin
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    PaperUnits		    "inches"
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    ReportName		    "simulink-default.rpt"
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      Name		      "Abs"
      Position		      [150, 78, 180, 102]
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      BlockType		      SubSystem
      Name		      "More Info"
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      Position		      [314, 185, 430, 255]
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	  Name			  "Zero Crossing Demonstration"
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	  FontSize		  14
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	  Name			  "This demonstration shows how zero crossings"
" work in Simulink.  In this model, \nthree shifted sine waves are fed into an"
" absolute value block and saturation block.\nAt exactly t = 5, the output of "
"the switch block changes from the absolute value \nto the saturation block.  "
"Zero crossings in Simulink will automatically detect exactly\nwhen the switch"
" block changes its output, and the solver will step to the exact \ntime that "
"the event happens.  This can be seen by examining the output in the scope. \n"
"\n"
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    }
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	axes1			"%<SignalLabel>"
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      YMax		      "1"
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    }
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      Name		      "Sine Wave"
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      Position		      [50, 110, 70, 130]
      SineType		      "Time based"
      Phase		      "[.1 .2 .3]"
      SampleTime	      "0"
    }
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      BlockType		      Switch
      Name		      "Switch"
      Position		      [230, 115, 260, 165]
      Threshold		      "0.5"
    }
    Block {
      BlockType		      SubSystem
      Name		      "t > 5"
      Ports		      [0, 1]
      Position		      [150, 127, 180, 153]
      ShowName		      off
      TreatAsAtomicUnit	      off
      MinAlgLoopOccurrences   off
      RTWSystemCode	      "Auto"
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	Name			"t > 5"
	Location		[153, 314, 324, 426]
	Open			off
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	ModelBrowserWidth	200
	ScreenColor		"white"
	PaperOrientation	"landscape"
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	PaperType		"usletter"
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	ZoomFactor		"100"
	Block {
	  BlockType		  Clock
	  Name			  "Clock"
	  Position		  [25, 10, 45, 30]
	  Decimation		  "10"
	}
	Block {
	  BlockType		  Constant
	  Name			  "Constant"
	  Position		  [25, 50, 45, 70]
	  Value			  "5"
	}
	Block {
	  BlockType		  RelationalOperator
	  Name			  "Relational\nOperator"
	  Position		  [80, 28, 110, 52]
	  ShowName		  off
	  Operator		  "<="
	}
	Block {
	  BlockType		  Outport
	  Name			  "t > 5"
	  Position		  [135, 30, 155, 50]
	  IconDisplay		  "Port number"
	  InitialOutput		  "0"
	}
	Line {
	  SrcBlock		  "Constant"
	  SrcPort		  1
	  Points		  [10, 0; 0, -15]
	  DstBlock		  "Relational\nOperator"
	  DstPort		  2
	}
	Line {
	  SrcBlock		  "Clock"
	  SrcPort		  1
	  Points		  [10, 0; 0, 15]
	  DstBlock		  "Relational\nOperator"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "Relational\nOperator"
	  SrcPort		  1
	  DstBlock		  "t > 5"
	  DstPort		  1
	}
      }
    }
    Line {
      SrcBlock		      "t > 5"
      SrcPort		      1
      DstBlock		      "Switch"
      DstPort		      2
    }
    Line {
      SrcBlock		      "Switch"
      SrcPort		      1
      Points		      [15, 0; 0, -25]
      DstBlock		      "Mux"
      DstPort		      2
    }
    Line {
      SrcBlock		      "Saturation"
      SrcPort		      1
      Points		      [20, 0; 0, -30]
      DstBlock		      "Switch"
      DstPort		      3
    }
    Line {
      SrcBlock		      "Abs"
      SrcPort		      1
      Points		      [20, 0; 0, 35]
      DstBlock		      "Switch"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Sine Wave"
      SrcPort		      1
      Points		      [35, 0]
      Branch {
	Points			[0, -30]
	Branch {
	  DstBlock		  "Abs"
	  DstPort		  1
	}
	Branch {
	  Points		  [0, -35; 170, 0; 0, 20]
	  DstBlock		  "Mux"
	  DstPort		  1
	}
      }
      Branch {
	Points			[0, 15; 0, 50]
	DstBlock		"Saturation"
	DstPort			1
      }
    }
    Line {
      SrcBlock		      "Mux"
      SrcPort		      1
      DstBlock		      "Scope"
      DstPort		      1
    }
    Annotation {
      Name		      "Zero Crossing Detection in Simulink 4"
      Position		      [218, 23]
      FontSize		      14
    }
  }
}