Serial communications basics, Signal levels – Barco RS232 User Manual

Page 10

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background image

1. Serial communications Basics

1

CD

2

RxD

3

TxD

4

DTR

5

GND

6

DSR

7

RTS

8

CTS

9

RI

1

CD

2

RxD

3

TxD

4

DTR

5

GND

6

DSR

7

RTS

8

CTS

9

RI

D9

female

D9

male

Image 1-1
connection: IBM PC or compatible → projector

1

HSKo

2

HSKi

3

TxD-

4

GND

5

RXD-

6

TXD+

7

n.c.

8

RXD+

4

DTR

8

CTS

3

TxD

5

GND

2

RxD

DIN

mini 8

D9

male

Image 1-2
connection: MAC → projector

Signal levels

Following table gives the signal levels corresponding to the different states:

State

Voltage

Off = 1

-9V

On = 0

+9V

8

R5976884 RLM SERIES 04/04/2006

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