30 September 1988
Inverted video phase
adjusted for null at burst
and continuous subcarrier
g. Adjust the oscilloscope for chop mode, noninverted video, and adjust
vertical positions to exactly overlay subcarrier and sync.
h. Adjust the oscilloscope-delayed sweep for a display showing the
leading edge of sync and the subcarrier.
A proper phase relationship
requires coincidence at the 50-percent points of the leading edge of sync
and the subcarrier zero crossings (fig 3-8). An improper phase relationship
is shown in Figure 3-9.
Properly-phased SC/H signal