Colorburst
Colorburst is a signal used to keep the chrominance subcarrier synchronized in an
NTSC television signal. Its frequency is 39375/11 k
Hz or 3579545 Hz. Because color televisions are so common, so are colorburst
crystals, and they are used in various other applications. For instance, the time-of-day clock in a
PC runs at four times the colorburst frequency.
