Enterasys Networks CSX7000 Manuel d'utilisateur Page 66

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USER’S GUIDE
66 CyberSWITCH
HARDWARE CHARACTERISTICS
Number of Ports: 4 (using RS232 adapter cable)
Connectors: DB26
Interface: RS232 DTE/DCE (using RS232 adapter cable)
MTBF: 75000hours
MTTR: 0.25hour
RS232 C
ONNECTION
The RS232 interface is provided by an adapter cable which converts the DB26 connection on a
RS232 adapter to two standard 25-pin RS232 connections.
Each port on a RS232 adapter has software configurable for DTE (external clocking) or DCE
(internal clocking). Be sure to use the appropriate RS232 adapter cable (DTE or DCE).
The DTE RS232 adapter cable provides two standard 25-pin connections with male contacts. The
DCE RS232 adapter cable provides two standard 25-pin connections with female contacts. The
following table shows the pin and signal assignments for the RS232 interfaces provided by the
adapter cable.
Pin and Signal Assignments for the RS232 Connection
RS232 Pin Signal Function RS232 Pin Signal Function
1 Chass Chassis Ground 14 NC No Connect
2 TD Transmit Data 15 TXC Transmit Clock
3 RD Receive Data 16 NC No Connect
4 RTS Request to Send 17 RXC Receive Clock
5 CTS Clear to Send 18 NC No Connect
6 DSR Data Set Ready 19 NC No Connect
7 Gnd Signal Return 20 DTR Data Terminal Ready
8 NC No Connect 21 NC No Connect
9 NC No Connect 22 RI Ring Indicator
10 NC No Connect 23 NC No Connect
11 NC No Connect 24 NC No Connect
12 NC No Connect 25 NC No Connect
13 NC No Connect
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