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Serial port signals, Serial port signals a-8 – Tektronix Phaser 300X User Manual

Page 151

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Technical Notes

A-8

Phaser 300X Color Printer

Serial port signals

The following table shows the printer’s serial port pinout.

Serial port signal descriptions

Signal name

Pin #

Printer I/O

Description

DCD

1

In

Data carrier detect

RxData

2

In

Received data

TxData

3

Out

Transmitted data

DTR

4

Out

Data terminal ready

Gnd

5

Signal ground

DSR

6

In

Data set ready

RTS

7

Out

Request to send

CTS

8

In

Clear to send

RI

9

Out

Ring indicator