[Top] [Prev] [Next] [Bottom]

Cabling Specifications        B


This appendix provides pinouts for the IRX console cable, asynchronous serial cable, synchronous (RS-232 and V.35) serial cables, and the pin numbering sequence for RJ-45 10BaseT cables and Ethernet cabling specifications.


Asynchronous Serial Cable Pinouts


Port S0 is an asynchronous DTE port with a female RS-232 connector. To connect to a terminal or other DTE, use a null modem cable, typically male-to-female, as shown in Table B-1. To connect to a modem or other DCE, use a male-to-male straight-through cable, as shown in Table B-2. Directions (input/output) are with respect to the IRX.

Table B-1 Null Modem Cable
Pins (port) Name Definition Direction Pins (terminal)
2 TXD Transmit Data Output 3
3 RXD Receive Data Input 2
4 RTS Request to Send Output 5
5 CTS Clear to Send Input 4
6 DSR Data Set Ready Input 20
7 SGND Signal Ground   7
8 DCD Data Carrier Detect Input 8
20 DTR Data Terminal Ready Output 6

 

Table B-2 Straight-through Cable
Pins (port) Name Definition Direction Pins (modem)
2 TXD Transmit Data Output 2
3 RXD Receive Data Input 3
4 RTS Request to Send Output 4
5 CTS Clear to Send Input 5
6 DSR Data Set Ready Input 6
7 SGND Signal Ground   7
8 DCD Data Carrier Detect Input 8
20 DTR Data Terminal Ready Output 20

Note: A 6' male-to-male straight-through cable can be purchased from Livingston Enterprises, using product code MC-6.


Synchronous Serial with RS-232 Cable Pinouts


Table B-3 provides the pinouts for the IRX DTE synchronous RS-232 serial port connection. The directions, input/output, are with respect to the IRX. Pins not listed have no connection. To connect to this port, you can use a straight-through 25-pin RS-232 cable.

Note: RS-232 only supports signalling at speeds up to 56Kbps. If the device at the other end of the cable supports RS-423 signalling, speeds up to 128Kbps can be obtained.

Table B-3 Synchronous Serial Port Pinout with RS-232
Pin Name Definition Direction
2 TXD Transmit Data Output
3 RXD Receive Data Input
4 RTS Request to Send Output
5 CTS Clear to Send Input
6 DSR Data Set Ready Input
7 SGND Signal Ground  
8 DCD Data Carrier Detect Input
15 ST Send Timing Input
17 RT Receive Timing Input
20 DTR Data Terminal Ready Output


Synchronous Serial with V.35 Cable Pinouts


Table B-4 provides the pinouts for the IRX DTE synchronous V.35 serial port connection, capable of speeds up to T1/E1. The directions, input/output, are with respect to the IRX. Pins not listed have no connection.

Note: To connect with this port, use the V.35 cable included with your IRX. To order additional cables from Livingston Enterprises, use product code DC-6.

Table B-4 Synchronous Serial Port Pinout with V.35
Pin V.35 Pin Name Definition Direction
2 P TXD Transmit Data Output
14 S TXD-    
3 R RXD Receive Data Input
16 T RXD-    
4 C RTS Request to Send Output
5 D CTS Clear to Send Input
6 E DSR Data Set Ready Input
7 B SGND Signal Ground  
8 F DCD Data Carrier Detect Input
15 Y ST Send Timing Input
13 AA ST-    
17 V RT Receive Timing Input
19 X RT-    
20 H DTR Data Terminal Ready Output


RJ-45 Connector Numbering


The 10BaseT Ethernet port uses a female RJ-45 connector. Figure B-1 shows pin numbering for female RJ-45 connectors.

Figure B-1 Pin Numbering for RJ-45 Female Connector


Ethernet Cabling


Specifications for the 10Mbps Baseband IEEE 802.3-compatible Ethernet interface are provided in Table B-5.

Table B-5 Network Interface Cabling
Ethernet Type Connector Type Cable Type Transmission Distance
AUI 15-pin DIX for connection to external transceiver RG-11 50 Ohm coaxial Trunk segment - 1,640 ft/500 m max Transceiver cable - 164 ft/50 m max Network trunk - 8,200 ft/2,500 m max
BNC BNC T-Connector RG-58 A/U 50 Ohm coaxial Trunk segment - 984 ft/300 m max Station distance - 1.5 ft/0.5 m max Network trunk - 3,035 ft/925 m max
RJ-45 RJ-45 for 10BaseT Unshielded Twisted Pair Hub distance - 328 ft/100 m max Repeaters - 4 max



[Top] [Prev] [Next] [Bottom]

spider@livingston.com
Copyright © 1997, Livingston Enterprises, Inc. All rights reserved.