Vxl Itona TC23yy Guía de usuario Pagina 16

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VXL Instruments Ltd. Itona TC23YY Hardware User’s Guide
Connectors and Cables 16
Cables
10/100 LAN Cable
Cross Connection - (Without Hub)
Straight Connection - (With Hub)
COM Port (Serial Port) Cables
Serial devices like modems and printers use 25 pin D-type connectors for RS232 connections. In order
to connect an RS232 device with a 25-pin connector, 9-pin connector signals must be converted to 25-
pin connector signals as shown in the following diagram.
9-pin to 25-pin Cross Connection
TXD+ 1
3 RXD+
TXD- 2
2 TXD-
RXD+ 3
1 TXD+
RXD- 6
6 RXD-
RJ45
Pin
RJ45
Pin
TXD+ 1
1 TXD+
TXD- 2
6 RXD-
RXD+ 3
3 RXD+
RXD- 6
2 TXD-
RJ45
Pin
RJ45
Pin
9 Pin
Connector
25 Pin
Connector
3
RXD
2
TXD
5
CTS
4
RTS
6
DSR
7
SGND
8
DCD
20
DTR
TXD 3
RXD 2
RTS 7
CTS 8
DSR 6
SGND 5
DCD 1
DTR
4
(Thin Client)
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