(2) The burst consists of approximately 8 to 11 cycles of the 3.579545 MHz
signal and is placed on the back porch of the horizontal blanking pedestal next to
the horizontal sync pulse, and all are placed in the horizontal blanking interval
(fig 1-23). FCC standard phase relationships between I and Q signals and the color
synchronizing burst are shown in the vector diagram (fig 1-18).
The I and Q
signals are transmitted in phase-quadrature, and the color burst (referred to as
reference subcarrier) is transmitted with an arbitrary 57-degrees phase lead over
the I signal.
f. In the mixer section of the colorplexer, the outputs of the Y, I, Q, and
burst keyer sections are added together to form the composite color signal (also,
sync is added in the luminance channel for a single color camera chain).
bandpass is now formed with the addition of the I and Q signal,