Matrox Electronic Systems II Manual De Usuario
Matrox Meteor-II /Multi-Channel grab section 61
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The on-board crystal oscillator.
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The horizontal video synchronization signal supplied by the
video source (line-locked mode).
video source (line-locked mode).
When in line-locked mode and accepting a composite video
signal, the PLL can synchronize to either serrated or block
vertical synchronization signals.
signal, the PLL can synchronize to either serrated or block
vertical synchronization signals.
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The clock signal supplied by the video source (to generate a
different clock).
different clock).
When the input source supplies a sampling clock that does not
require adjustment, the PLL is bypassed to avoid adding jitter
to the supplied clock.
require adjustment, the PLL is bypassed to avoid adding jitter
to the supplied clock.
General synchronization
Matrox Meteor-II /Multi-Channel can operate in either slave
or master mode.
or master mode.
Slave mode
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In slave mode, the video source provides the synchronization
information to Matrox Meteor-II /Multi-Channel. It can
accept one of the following synchronization schemes:
information to Matrox Meteor-II /Multi-Channel. It can
accept one of the following synchronization schemes:
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The video source encodes the synchronization signals on
the analog video signal provided to the board.
the analog video signal provided to the board.
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The video source supplies the horizontal and/or vertical
synchronization signals separately in TTL format.
synchronization signals separately in TTL format.
❐
The video source provides a composite synchronization
signal in TTL format, separate from the analog video.
signal in TTL format, separate from the analog video.
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Synchronization information can be sent either with the
video data, or on a separate analog synchronization channel.
video data, or on a separate analog synchronization channel.
Master mode
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In master mode, Matrox Meteor-II /Multi-Channel
generates (using the PSG) the horizontal and/or vertical
(TTL) synchronization signals and supplies them to the video
source. This allows the video source to synchronize to the
board.
generates (using the PSG) the horizontal and/or vertical
(TTL) synchronization signals and supplies them to the video
source. This allows the video source to synchronize to the
board.