Avid Technology Avid Adrenaline, Руководство пользователя

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Synchronizing Audio and Video Equipment
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Synchronizing Audio and Video Equipment
Avid editing systems require synchronization when capturing audio and video.
Digital audio signals (AES/EBU, S/PDIF, and optical) contain their own
synchronization (sync) signal. A sync signal for analog audio and analog
video can also be generated from the connected REF signal, from incoming
video, or internally by the Avid Adrenaline.
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The digital signal from a 1394 device has its own sync signal, to which the
Avid Adrenaline synchronizes.
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When doing a digital cut, you need to select the type of sync you are using in
the Video Output tool.
The following list summarizes how sync works:
• HD Tri-Level Sync — Tri-level sync signals are generated from the
incoming tri-level house sync. If there is no sync connected, an internal
sync is used.
Tri-level sync works similar to an analog sync, but the tri-level sync signal
consists of a three-level sync pulse: zero volts (0V) blank, a –0.3 V pulse,
and a +0.3 V pulse.
20 LTC IN Longitudinal timecode input, female connector; can be used in
place of 9-pin deck control when deck control is not required
21 LTC OUT Longitudinal timecode output, male connector; master clock used
to stripe tapes and synchronize systems to the house master clock
(SMPTE for NTSC, and EBU for PAL)
22 MONITOR, OUT 1 ¼-inch audio tip/ring/sleeve (TRS) jacks that each output one
channel (left/right) of audio to speakers. The audio feeding this
connection is from the incoming or outgoing audio.
c
This TRS jack provides balanced professional level
audio to your speaker system. Do not use ¼ mono cables
in this connector, as your output levels might be too
high.
23 MONITOR, OUT 2
a. At this time, the SDTI outputs function as SDI outputs.
SD Video I/O Board Identifiers (Continued)
Number Label Function