CONTENTS

PART  1 -Definitions of video parameters    
 1     Waveform terminology     
 2     Definitions of signal parameters    
        2.1     Nominal impedance, Z0     
        2.2     Return loss
        2.3     Polarity and d.c. component           
        2.4     Nominal signal amplitude    
 3     Definitions of performance parameters      
        3.1     Insertion gain         
        3.2     Noise     
                  3.2.1     Continuous random noise  
                  3.2.2     Low-frequency noise        
                  3.2.3     Periodic noise       
                  3.2.4     Impulsive noise     
        3.3     Non-linear distortion          
                  3.3.1     Picture signal        
                  3.3.2     Synchronizing signal          
        3.4     Linear distortion     
                  3.4.1    Waveform distortion of the luminance signal           
                  3.4.2     Chrominance waveform distortion 
                  3.4.3     Chrominance-luminance inequalities           
PART  2 - Measurement methods and test signals    
 1     Introduction      
 2     Measurements of equipment and signal characteristics of television equipment       
        2.1     Nominal impedance           
        2.3     Non-useful d.c. component
 3     Measurements of television equipment      
        3.1     Insertion gain         
        3.2     Noise     
                  3.2.1     Continuous random noise  
                  3.2.2     Low-frequency noise        
                  3.2.3     Periodic noise       
                  3.2.4     Impulsive noise     
        3.3     Non-linear distortion          
                  3.3.1     Picture signal        
                  3.3.2     Synchronizing signal          
        3.4     Linear distortion     
                  3.4.1     Waveform distortion of the luminance signal           
                  3.4.2     Chrominance-luminance inequalities           
                  3.4.3     Steady state characteristics           
Annex 1 - Test signal elements    
Annex 2 - Design of filters used for measurements    
 1     Low-pass filter for use in noise measurements       
 2     Combined high-pass, low-pass filter ( fc = kHz)   
 3     Unified weighting network for random noise         
        3.1     Network configuration       
        3.2     Insertion loss A      
        3.3     Noise weighting factors in a 5 MHz band   
 4     Examples of differentiating and shaping network for luminance non-linearity measurement  
        4.1     Non-constant resistance form         
        4.2     Constant resistance form    
        4.3     Step response of staircase differentiating network   
 5     Thomson filter for use in measurement of line-time waveform distortion     
Annex 3 - Methods of measurement using insertion test signals    
 1     Introduction      
Annex 4 - Short-time waveform distortion - The K-rating method of assessment    
 1     Introduction      
 2     Routine-test method         
        2.1     2T pulse response  
        2.2     2T pulse/bar ratio  
        2.3     T pulse response    
 3     Acceptance-test method