Pin Assignments
C-4
893-743-A
Service Port
Table C-4 shows the pin assignments for the service port on the Model 281xSA
hub.
Table C-4. Service port pin assignments (DB-9 plug)
Connector
Pin #
Function
Direction
2
Transmit data
from Model 281xSA hub
3
Receive data
to Model 281xSA hub
5
Signal ground
–
1
5
6
9
DB-9
3166.3