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Cascading Vertical Interval Video-Audio Matrix Switchers Set Dip 4 ON on the last unit (terminating the RS-485 line at 120 ). Set Dip 4 OFF on the other units Set Dip 6 ON on all 8 units (enabling the Reply option in accordance with Protocol 2000) Set Dip 5 and Dip 8 OFF on all 8 units Set Dip 7 ON on all units (as the PC connects via the RS-485 port) Figure 13: Cascading Individual Units in a Control Configuration via RS-485 17
