EverFocus EDR-1640 - Manual (Page 21)

For a simple, short distance installation, recorder and keyboard can directly be connected using a
standard network cable (patch cable, uncrossed!).
2.4.3 EKB-500 connection with network patch cable
2.4.2 RS-485 plug connection assignment
The two RS-485 input RJ-45 plugs are looped through and pin-compatible. The following
RJ-45 plug assignment has to be considered for connection:
Pin 3: RS-485 +
Pin 6: RS-485 -
The following illustration shows the connector box assignment of the optional EDA998
connection kit (connector box, patch cable):
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