If the slave player needs an additional timing reference for more precise synchronization
(see “
Results of timecode and genlock timing references
,“ below), either the
proprietary genlock timing reference or traditionaly genlock can provide it. In
figure 67
, on
the preceding page, the master player outputs the ESGen genlock signal on its Lock Out
connector. The slave player receives the ESGen genlock on its Lock In connector.
TIP:
If you are using proprietary genlock in your configuration set the player that is the
LTC master to be the genlock master.
NOTE:
If you are using traditional genlock, the media player can only input the
reference and can be a genlock slave only.
The slave player can daisy-chain the signal on its Lock Out connector for use in an
application with up to three media players. In a system with more that three devices
requiring proprietary genlock, Extron recommends using the following optional Extron
equipment:
•
PDA 108 Player Sync Distribution Amplifier for JMP 9600 (part number
60-1148-01
) for
the ESGen genlock signal
•
DA 6A Stereo Audio Distribution Amplifier (part number
60-692-20
) for the LTC signal
Results of LTC and genlock timing references
For precise frame-by-frame sync to the master player, the slave player needs an additional
timing reference in addition to LTC; either proprietary genlock or traditional genlock
(see figure
68
).
•
Proprietary or traditional genlock only —
Video frame times are precisely
synchronized between the players, but there is no control ensuring that both players are
playing the
corresponding
frame.
•
LTC only —
The content is loosely synchronized with the players outputting
corresponding frames, but the video frame times may be slightly shifted.
•
Proprietary or traditional genlock and LTC —
Video frames and content are precisely
synchronized.
Genlock only
Frame
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LTC only
Master
Player
Slave
Player
Master
Player
Slave
Player
Master
Player
Slave
Player
Genlock and LTC
Figure 68.
Comparison of the Effects of Timing References Applied
JMP 9600 Media Player • Detailed System Interaction
85