Sony BVU-950 - Page 29

line. Chart 6 shows why this may happen. Whenever the duration of
the horizontal line at the edit point is irregular, flagging occurs.
A B
}
“video | | ! TW rere —
video i mao
Incoming
Video
=V141r
Edited
Actual
"Cut
in"
Video
(A
)
point
T2::32.0 uSec
T3;:95.5 uSec
Edited
Video (8B )
WRONG FIELD EDIT
Chart-6
Even with a framing servo, flagging may occur. This is because the
tolerance of the Vertical Phase Lock stability is usually +1/2H. So
even
though
the
frames
may
be
correctly
lined
up,
this
phase
drift
may
be responsible for an improper edit. If the drift is large enough
(close to 1/2 H or so) then flagging occurs. (Chart-7)
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