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Observed output video on display is  blanked every 2sec to 3 sec or ramdamly.



		

			

									
					    tendulkar.selvam
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jun 10, 2017 
				
			
			
		
    

				
		
    
		    		    
		    
		    	
			
    Dear All,
    
 
    Note : Refer attachment for detailed description
    
 
    Issue :Output VGA Video is blanking.
    
 

    Video standard used :
    VGA – 640 X 480 with 60Hz refresh rate.
    Problem faced : Observed output video on display is  blanked every 2sec to 3 
    sec or ramdamly.
    
 

    Scope Images :
    Plz refer the observed input VGA – HSYNC,VSYNC pulses(From 
    VGA connector -CPU) & Coverted HSYNC,VSYNC (Display)from 
    Differential to VGA Converter.
    
 
    Please refer attachment for detailed description
    
 
    Regards,
    
 
    Tendulkar S
    
									
			        
		
    

				
							attachments.zip
							
        

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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                on Jun 13, 2017 4:21 AM
            
            
					
        
	
        

		
		
        
					
        Dear sir, 
        
 
         For VGA to Differential R,G,B converter.I am Using
        
 
        1.Single ended to Differential amplifier  - AD8133
        
 
        2.CSYNC Converter (From HSYNC and VSYNC)  -  Developed using EX-OR gate Resistor and Capacitors .
        
 
        3.Green video(From VGA) + Csync adder/inserter  - HFA1135
        
 
        For Differential R,Gs,B to VGA converter
        
 
        1.Differential to single ended converter - AD8145
        
 
        2.SYNC separator -EL1883
        
 
        3.SYNC stripper - AD8062.
        
 
        Regards,
        
 
        Tendulkar S
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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													0
							
			
				
									
							        
			
			
			
          
            
						
                            
            
            				
            
                on Jun 13, 2017 4:21 AM
            
            
					
          
	
          

		
		
          
					
          Dear sir, 
          
 
           For VGA to Differential R,G,B converter.I am Using
          
 
          1.Single ended to Differential amplifier  - AD8133
          
 
          2.CSYNC Converter (From HSYNC and VSYNC)  -  Developed using EX-OR gate Resistor and Capacitors .
          
 
          3.Green video(From VGA) + Csync adder/inserter  - HFA1135
          
 
          For Differential R,Gs,B to VGA converter
          
 
          1.Differential to single ended converter - AD8145
          
 
          2.SYNC separator -EL1883
          
 
          3.SYNC stripper - AD8062.
          
 
          Regards,
          
 
          Tendulkar S
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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