radarsys Files · apps/jars/static/js/filters.js

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             filters.js
        
                    30 lines
            
             | 796 B
            
                | application/javascript
            
             |
                JavascriptLexer
            
             / apps / jars / static / js / filters.js
          
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      $("#id_fch").change(function() {

      	 updateParameters()

      });

      $("#id_clock").change(function() {

      	 updateParameters()

      });

      $("#id_mult").change(function() {

      	 updateParameters()

      });

      function updateParameters(){

      	var fclock = $("#id_clock").val();  					// clock frequency (MHz)

      	var fch    = $("#id_fch").val();    					// RF frequency (MHz)

      	var m_dds  = $("#id_mult").val();   					// DDS multiplier

      	if (Math.abs(fch) < fclock/2){ 			    					// Si se cumple nyquist

      	    var nco   = Math.pow(2,32)*((fch/fclock)%1);

      		//var nco_i = Math.round(nco/m_dds)*m_dds;

      		var nco_i = Math.round(nco)

      	}

      	else {

      	    nco = Math.pow(2,32)*(fclock-fch)/(fclock);

      	    //nco_i = Math.round(nco/m_dds)*m_dds;

      		var nco_i = Math.round(nco)

      	}

      	fch_decimal = $("#id_fch_decimal")

      	$(fch_decimal).val(nco_i)

      }

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				$("#id_fch").change(function() {
				updateParameters()
				});

				$("#id_clock").change(function() {
				updateParameters()
				});

				$("#id_mult").change(function() {
				updateParameters()
				});

				function updateParameters(){
				var fclock = $("#id_clock").val(); // clock frequency (MHz)
				var fch = $("#id_fch").val(); // RF frequency (MHz)
				var m_dds = $("#id_mult").val(); // DDS multiplier

				if (Math.abs(fch) < fclock/2){ // Si se cumple nyquist
				var nco = Math.pow(2,32)*((fch/fclock)%1);
				//var nco_i = Math.round(nco/m_dds)*m_dds;
				var nco_i = Math.round(nco)
				}
				else {
				nco = Math.pow(2,32)*(fclock-fch)/(fclock);
				//nco_i = Math.round(nco/m_dds)*m_dds;
				var nco_i = Math.round(nco)
				}
				fch_decimal = $("#id_fch_decimal")
				$(fch_decimal).val(nco_i)
				}