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LED-780H series video processor’s mosaic setting ，totally 5 mode：
Off：close mosaic function,at this state, all the output ports output the
same picture.
1 panel：all the output ports output the same picture , while system can
capture the synchronous signal autolly, this model can use for
cascading splicing .
2 panels：Output ports DVI1 & DVI2 splicing，DVI3 backup DVI1，DVI4
backup DVI2.
3 panels：output ports DVI1, DVI2 & DVI3 splicing .
4 panels：output ports DVI1, DVI2, DVI3&DVI4 splicing .
Auto arragement：only be used for single input enlargement splicing .
by the current video processor.
The LED screen top-left corner is viewed as the original point
(vertical starting point 0).
Auto arrangement
Caculate the mosaic parameter autolly to complete the mosaic.