I n t e r f a c e M e n u

Figure 3.15 Serial Menu options showing factory settings (continued)

Option

Setting

 

Description

 

 

 

Baud Rate

57600

Speed at which data is transferred.

 

38400

Baud rate translates approximately to bits per

 

19200

 

second.

 

 

9600*

 

 

 

 

 

4800

 

 

 

2400

 

 

 

 

The serial port Baud Rate setting must

 

1200

 

 

 

match the host computer baud rate

 

600

 

 

 

setting.

 

300

Note

 

 

 

 

 

Your software application may set the

 

 

 

baud rate. If not, use the DOS MODE

 

 

 

command to modify the baud rate on

 

 

 

the host computer. Refer to your DOS

 

 

 

documentation for more information.

 

 

 

 

 

 

Handshake

Robust XON*

Data flow control. (Flow control, also known as

 

XON

handshaking, is the cooperation between the host

 

Hardware

computer and printer for data transfer. XON signals

 

 

the host computer to send more data. XOFF is the

 

 

converse signal that tells the host computer to stop

 

 

and wait.)

 

 

Robust XON sends the XON signal continuously.

 

 

Robust XON helps ensure that handshaking works

 

 

with a host computer that fails to receive the XON

 

 

signal.

 

 

 

XON sends the signal only once.

 

 

Hardware is used when the host computer cannot

 

 

operate in XON/XOFF handshaking mode. Hardware

 

 

requires a cable with the DTR (Data Terminal

 

 

Ready) pin connection enabled.

 

 

 

DTR Polarity

High*

Serial port’s DTR (Data Terminal Ready) signal sent

 

Low

from the printer to notify the host computer that it is

 

 

ready to receive data.

 

 

High is standard for most computers; it uses true logic

 

 

(+5 V).

 

 

 

Low is typically used on nonstandard equipment; it

 

 

uses inverted logic (0 V).

 

 

 

 

3-484 5 0 5 / 4 5 0 5 p s o r 4 5 1 0 / 4 5 1 0 p s U s e r ’ s G u i d e

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Xerox 4505/4505ps, 4510/4510ps manual Baud Rate, Handshake, DTR Polarity