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7. Operations

Understanding Flip-flop Mode

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On the FSN Series, the M/E and PGM banks operate in flip-flop mode. This means that when you execute a CUT, WIPE or MIX transition in which BG is enabled, the sources on BG and PST exchange places when the transition completes. For example:

•Prior to the transition, CAM3 is on BG and CAM1 is on PST.

M/E

CAM1 CAM2 CAM3 VTR1 VTR2 DVD1

K E Y

B G

P S T

BLACK

BLACK

BLACK

Figure 7-3.M/E prior to transition

•After the transition, the buses flip-flop. CAM1 is on BG and CAM3 is on PST.

M/E

CAM1 CAM2

CAM3 VTR1 VTR2 DVD1

K E Y

B G

P S T

BLACK

BLACK

BLACK

Figure 7-4.M/E after transition

In this way, if you continue to press CUT or AUTO TRAN, the last-selected BG source will always be available on PST as the next source — until you change that source as required.

314 FSN Series • User’s Guide • Rev 01