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4520/4520mp User’s Guide
DTR Polarity
High*
Low
Serial port’s DTR (Data Terminal Ready) signal sent
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).
Data Bits
7
8*
Number of data bits in a character.
The
Data Bits
setting must match the
host computer data bits setting.
Parity
None*
Even
Odd
How the parity bit is used in error checking.
The parity bit may be checked against the received
character by means of an
Even
or
Odd
error checking
mechanism.
The
Parity
setting must match the host
computer parity setting.
Stop Bits
2
1.5
1*
Number of stop bits in each character. (Stop bits
signal the end of a character.)
The
Stop Bits
setting must match the
host computer stop bits setting.
Figure 3.13 Serial Menu options showing factory settings
(continued)
Option
Setting
Description
Note
Note
Note
WUG-CH03 Page 50 Black,Red,Cyan Tuesday, March 21, 1995 4:54 PM