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B&B Electronics 232OPDRI-PH - Quick Start Guide User Manual

Product overview, Loopback test connect your rs-232 devices, Check leds

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Loopback Test

Connect Your RS-232 Devices

Front View

Serial

Ports

• Use a DB9 Female to DB9 Male cable to connect

a PC to the DCE port. (Recommended)

• Connect a DB9 Female to DB9 Female cable

to the DTE port. On the DTE Port, jumper pin

2 to 3 and pin 7 to 8 on the female end

of the cable. This loops TD to RD and CTS to RTS.

• Using HyperTerminal or similar program, connect

to the appropriate COM port. (Remember to set

the baud rate to 9600.)

• Turn off HyperTerminal local echo.

• Type some characters in HyperTerminal. The

same characters should appear on your screen.

The LED indictors will light up to show you that

data is being transmitted.

Check LEDs

Product Overview

10 to 48 VDC, 1.5 W Max
Grounding the unit is recommended.

A DTE device is “Data Terminal Equipment.” This

includes computers, PLCs, and most devices that are

not used to extend communications.

(Think “COMPUTER” for DTE.)

A DCE device is “Data Communications

Equipment.” This includes modems and other

devices that extend communications, like RS-422,

RS-485, fiber optic converters or radio modems.

(Think “MODEM” for DCE.)

When connecting a DTE device to a DCE device,

use a straight through connection. When connecting

a DTE device to a DTE device, or a DCE device to a

DCE device, use a crossover (null) connection.

Back View

LED

Indicators

LED

Indicators

DB9 Female

DCE Port

DB9 Male

DTE Port

Pin 3 LED

Green, ON when a TD input (PIN 3)

is raised on the DCE port

Pin 7 LED

Green, ON when a RTS input (PIN 7)

is raised on the DCE port

Pin 2 LED

Green, ON when a RD input (PIN 2)

is raised on the DTE port

Pin 8 LED

Green, ON when a CTS input (PIN 8)

is raised on the DTE port

Power LED

Red, ON when power applied

Power TB2

Position, Removable (10-48 VDC)

GND

Grounding Lug

1

2

3