DRO-550 Cables Construction

RS-232 Cable

The RS-232 interface is used for both programming the DRO-550 and for interfacing it to a PC. The cable is wired as indicated in the table.  The connector is a 9 pin female d-sub connector.

RS-232 Signal PCB Pin (J18)
Female DB-9 Pin
Tx 1 3
Rx 2 2
Ground 3 5