Avid Technology Digidesign USD User Manual page 89

Connector Pin
Assignments
Connector Pin Assignments
Mac Serial Port
Pin # Name
1
NC
2
RTS_IN
3
RX_OUT
4
GND
5
TX_IN
6
GND
7
CTS_OUT
8
NC
Shell
GND
Description
No connection
Request To Send (input to USD)
Transmitted data (output from USD)
Chassis ground
Received data (input to USD)
Chassis ground
Clear To Send (output from USD)
No connection
Chassis ground
Appendix C: Wiring Diagrams Pin Assignments 85
Mac Connection
Pin 2 (HSKiB)
Pin 1 (HSKoB)
Pin 5 input (RXDB-)
Ground
Pin 3 output (TXDB-)
Pin 8 input (RXDB+)
Pin 7 input (GPiB)
Pin 6 (TXDB+)
Ground