| Definition: | test signal consisting of a sine squared pulse, the mid-amplitude duration of which is Т, where T is the approximate duration of the semi-period corresponding to the normal limiting frequency of the video band of the television system under consideration
NOTE 1 – Other test signals designated 2T...nТ, and consisting of sine squared pulses of half amplitude duration of 2T,...nТ.
NOTE 2 – In the case of 625 line systems T is standardized at 0,1 μs.
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