Meyer Sound CueMixer Matrix3 - Manual (Page 9)

Table 1. CueMixer RS-422 Connection
Purpose Pin
Shield 1
TxD+ 4
TxD- 5
RxD+ 8
RxD- 9
DIP Switch Settings
The dip-switches on the rear panel of the CueMixer are not used and their settings ignored by the electronics.
9
Connecting the CueMixer