
Most lines have a single normal-
width sync pulse.
About a dozen lines of each
frame contain equalization pulses.
About half a dozen lines of each
frame contain broad pulses.
The equalization and broad pulses
display on a waveform monitor as
faint "phantom" traces.
Figure 34.4
"Phantom" sync traces
The term
composite
is overused in
video. In the context of sync, it
refers to combined horizontal and
vertical elements, and is unre-
lated to the combining of luma
and modulated chroma!
SMPTE 318M,
Reference Signals for
the Synchronization of 59.94- or 50-
Hz Related Video and Audio Systems
in Analog and Digital