Datavideo SE-4000 8-Channel 4K Video Switcher - Manual (Page 74)

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Preset 5 Preset 6
Preset 7 Preset 8
Preset 9
R/L
On the Multiview, by default, Preview window is positioned on the left and on the right is
the Program window. This option allows you to switch their positions.
Tally Mode
Tally output port generally sends two tally signals to each channel. In Datavideo products, Red
indicates On-Air, and Green indicates next video source. On the Multiview screen, the tally
light is indicated by rectangular borders around the input sub windows.