Rgb/Yuv Switching With Rs-232 (Pc Control); Figure 5: Rs-232 And Rs-485 Operation - Ocean Matrix OMX-SW8X8NT Instruction Manual

Self Address = 1 (Master)
Self Address = 3

6.4 RGB/YUV Switching with RS-232 (PC Control)

Three OMX-SW8x8NT units can be connected in a YUV/RGB setup where
each video signal is composed of three sub-signals that should be switched
together.
Connecting the OMX-SW8x8NT

Figure 5: RS-232 and RS-485 Operation

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