Measuring

To admeasurement the allotment of cogwheel gain, the standart denticulate arresting with superimposed blush carrier is used. (4.43 MHz. in PAL and 3.58 MHz. in NTSC) The denticulate represents the CVS with all accessible levels amid 0.3 v to 1 V. The waveforms are apparent in the accompanying angel frame.The top amount shows the input. Note that the amplitude of the superimposed blush arresting is constant. The average amount shows the adulterated output. In this example, blush arresting superimposed on a top akin luminance arresting has been attenuated.The basal amount shows the aforementioned waveform afterwards casual through a top canyon clarify to facilitate measuring. (CVS is filtered out abrogation alone blush signal) .

\mbox{DG} =\frac{a-b}{a}

According to European standarts DG should be beneath than % 10.