Bay Technical Associates 350 Manual De Usuario

Connectors and Pin Assignments

893-00992-B

B-5

 

The DB-9 service port connector (Figure B-4) is configured as a data 
communications equipment (DCE) device connector. The DSR and CTS signal 
outputs are always asserted; the CD, DTR, RTS, and RI signal inputs are not used. 
This configuration enables a management station (a PC or terminal) to connect 
directly to the switch using a straight-through cable.

1

CD

Carrier detect (not used)

2

TXD

Transmit data (output)

3

RXD

Receive data (input)

4

DTR

Data terminal ready (not used)

5

GND

Signal ground

6

DSR

Data set ready (output always asserted)

7

RTS

Request to send (not used)

8

CTS

Clear to send (output always asserted)

9

RI

Ring indicator (not used)

Shell

Chassis ground

5

6

9

1

619EA

350fbk.book  Page 5  Wednesday, July 9, 1997  4:51 PM