Aurora Multimedia 4520CPR User Manual download pdf (Page 49)

Vanguard Multiport 4520CP Controller User’s Guide A-1

Appendix A Cables and Connectors

This appendix provides necessary background information for making connections

to serial ports. It discusses modem and null modem connectors, the standard RS-

232 pinouts, and describes some typical cables.

Two terms used frequently in this appendix are

• Data Communications Equipment (DCE)

• Data Terminal Equipment (DTE)

DCE peripheral devices usually refer to modems. DTE devices include terminals,

printers, and computers.

Cabling Overview

To connect a peripheral device to a Vanguard Multiport card, you need an interface

cable to run electrical signals from one of the DB-25 connectors to the device.

Aurora does not supply this cable. You can purchase ready-made cables at your

local computer store.

There are two types of serial devices: DCE and DTE. The important difference

between the two types is that they send and receive signals through different pins.

Aurora’s Vanguard Multiport cards are configured as DTE devices. In general,

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Aurora Multimedia 4520CPR User Manual Page 49