Ruby Tech GS-2124C Manuale Utente Scaricare il pdf (Pagina 233)

100

101

GS-2124C User Manual

Publication date: June, 2005

Revision A1

223

Appendix B

Null Modem Cable

Specifications

The DB-9 cable is used for connecting a terminal or terminal emulator to the

Managed Switch’s RS-232 port to access the command-line interface.

The table below shows the pin assignments for the DB-9 cable.

Function Mnemonic

Carrier CD 1

Receive Data RXD 2

Transmit Data TXD 3

Data Terminal Ready DTR 4

Signal Ground GND 5

Data Set Ready DSR 6

Request To Send RTS 7

Clear To Send CTS 8

9 Pin Null Modem Cable

CD 1 4 DTR

DSR 6 1 CD

DTR 4 6 DSR

RXD 2 3 TXD

TXD 3 2 RXD

GND 5 5 GND

RTS 7 8 CTS

CTS 8 7 RTS

Reserve 9 9 Reserve

1 2 ... 228 229 230 231 232 233 234 235 236 237 238 ... 266 267

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