Accom ASWR8150, Техническое руководство

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Aux Output Sources Delayed by Two Lines
Any external input is immediately delayed by approximately two lines
from its original timing due to the automatic input timing circuitry (-1/2
to + 2 lines from reference). This means that if an external input to the
8150 is routed directly out an Aux output, it is delayed two lines from
8150 reference, no matter what the original timing of the source. Other
independently generated internal sources (Black, SuperMatte, and the
Framestores, if installed) have this same delay from reference so that a
live switch from an external source to an independent internal source,
or vice versa, does not cause a timing discontinuity at the output.
Any Aux output with the following sources selected is delayed by two
lines from reference, as is the Aux Ref signal associated with that output:
Any external inputs
Switcher Black
SuperMatte generator output
Optional Framestore 1 and 2 outputs
Internal DVE video and key output (if fed by one of the above sources)
Aux Output Sources Delayed by 18 Lines
The M/E processing circuitry has a propagation delay of 16 lines. Any
external or independent internal source processed by the M/E is delayed
by its original two lines, plus the 16 lines through the M/E, for a total of
18 lines delayed from reference.
Any Aux output with the following sources selected is delayed by 18
lines from reference, as is the Aux Ref signal associated with that output:
M/E Program output
M/E (look-ahead) Preview output
Key monitor out (if Keyer 1 or Keyer 2 is the active keyer)
Wipe pattern output (if M/E wipe is the selected pattern)
M/E DVE video and key send (used for effects looping)
Internal DVE video and key output (if fed by one of the above sources)
Outputs Delayed by 34 Lines
Like the M/E, the PGM/PST processing circuitry has a propagation
delay of 16 lines. Any external source processed by the PGM/PST block
is delayed by its original two lines, plus an additional 16 lines to cotime
its input with the M/E output, plus the 16 lines through the PGM/PST
processing, for a total of 34 lines delayed from reference.
8150 Technical Guide General Timing Considerations
9100-0212-04 - May 2000
System Timing
6-3