Cisco Systems CAB-232FC, CAB-232MT User Manual

CAB−232MT and CAB−232FC EIA/TIA−232 Serial
Cable Specifications

Document ID: 46800

Introduction
Prerequisites

Requirements
Components Used
Conventions

EIA/TIA−232 Speed and Distance Limitations
Serial Cable CAB−232MT

EIA/TIA−232 Serial Cable Assembly
EIA/TIA−232 DTE Cable Pinouts

Serial Cable CAB−232FC

EIA/TIA−232 DCE Cable Pinouts (DB−60 to DB−25)

Related Information

Introduction

This document provides the technical specifications for the EIA/TIA−232 serial cables.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

This document is not restricted to specific software and hardware versions.

The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.

Conventions

For more information on document conventions, see the Cisco Technical Tips Conventions.

EIA/TIA−232 Speed and Distance Limitations

As with all signaling systems, EIA/TIA−232 signals can travel a limited distance at any given bit rate;
generally, the slower the data rate, the greater the distance.

The table below gives the EIA/TIA−232 speed and distance limitations.

Data Rate (Baud)

Distance (Feet) Distance (Meters)

2400
4800
9600
19200
38400
57600
115200

200 60
100 30
50 15
50 15
50 15
25 7.6
12 3.7

Serial Cable CAB−232MT

This section presents the cable assembly and pinouts for the CAB−232MT serial cable.

Note: The cable itself identifies the Cisco router as a data terminal equipment (DTE) or data communications
equipment (DCE) device to other devices in the network; for this reason, it is important to select the correct
product number from the table below.

The cable gender for this product (part number 72−0793−01) is Male − Male, mode − DTE.

The CAB−232MT cable is used in the Cisco 7000 family, Cisco 4000 series, Cisco 3600 series, Cisco 2500
series, Cisco 1600 series, Cisco access servers, and AccessPro PC cards. This cable has a male DB−60
connector on the Cisco end and a male DB−25 connector on the network end.

EIA/TIA−232 Serial Cable Assembly

EIA/TIA−232 DTE Cable Pinouts

The table below shows the EIA/TIA−232 DTE cable pinouts (DB−60 to DB−25).

Note: The arrows indicate signal direction:

−−−> indicates DTE to DCE•
<−−− indicates DCE to DTE•

60

1

Pin

J1−50 MODE_0 Shorting

Signal Description Direction 25 Pin Signal

group

− − −