Extron electronic JMP 9600 manual Results of LTC and genlock timing references

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.

Master			Slave	Master
Player		Player		Player
	Frame		Frame		Frame
	1		5		1
	Frame		Frame		Frame
	2		6		2
	Frame		Frame		Frame
	3		7		3
	Frame		Frame		Frame
	4		8		4
	Frame		Frame		Frame
	5		9		5
	Frame		Frame		Frame
	6		10		6
	Frame		Frame		Frame
	7		1		7
	Frame		Frame		Frame
	8		2		8
	Frame		Frame		Frame
	9		3		9
	Frame		Frame		Frame
	10		4		10

Slave	Master
Player	Player
		Frame
Frame		1
1
		Frame
Frame		2
2
		Frame
Frame		3
3
		Frame
Frame		4
4
		Frame
Frame		5
5
		Frame
Frame		6
6
		Frame
Frame		7
7
		Frame
Frame		8
8
		Frame
Frame		9
9
		Frame
Frame		10
10

Slave

Player

Frame

1

Frame

2

Frame

3

Frame

4

Frame

5

Frame

6

Frame

7

Frame

8

Frame

9

Frame

10

Genlock only LTC only Genlock and LTC

Figure 68. Comparison of the Effects of Timing References Applied

JMP 9600 Media Player • Detailed System Interaction 85