AVMATRIX PVS0615U - Tally Output

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For example, switching the PGM source to SDI 1 and PVW source to SDI 2. The button selection as
below.
The default sources of PVW and PGM are SDI 1 and SDI 2 when the first turn the video switch on. When
operating the AUTO or T-Bar transition, the selection from PGM row and PVW row is invalid, both of the
LED will turn red.
4.3.2 Tally Output
PVS0615U is equipped with a 25-pin GPIO interface for tally, the pin outputs are defined as follows:
Note:
1. When video channel is PVW or PGM,
GPIO output is at low level.
2. The PIN not defined here is reserved,with
no function now.