Results of ltc and genlock timing references – Extron Electronics JMP 9600 User Guide User Manual

Page 91

If the slave player needs an additional timing reference for more precise synchronization
(see “

Results of timecode and genlock timing references

proprietary genlock timing reference or traditionaly genlock can provide it. In

, 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

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