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While in PAL format, the unit will be mV, While in NTSC format, it will be IRE.
Video signal PEAK to PEAK level:
For NTSC format, the video signal level is 140±15IRE
For PAL format, the video signal level is 1000±200mV
If the level is too low, it will cause the image to lose quality and limit the distance it will travel
over cable. If the level is too high, it will distort the image.
SYNC level: Tests the amplitude of the video sync pulse to verify if the video level is correct.
For NTSC format, the SYNC level is 40 ± 5IRE
For PAL format, the SYNC level is 300 ± 35mV
If the level is too low, it will cause the image to not frame out properly. If the level is too high, it
will lead to a poor quality image.
COLOUR BURST level: Testing the colour burst level will determine if the burst signal is
sufficient to trigger the displays colour producing circuit. Burst will diminish in amplitude over
longer cable runs and can get fall below the threshold for the video display to show a colour
Chroma level( COLOUR BURST)
Chroma level( COLOUR BURST)
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