Lexmark Optra Color 45, Руководство пользователя

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Chapter 3: Using the Operator Panel and Menus
98
U
s
ing the O
p
erat
or
Panel an
d
Menus
Using Your Printer
Parity Even
Odd
None*
Ignore
This setting lets you set the parity for serial input and output data frames.
Even The port expects to receive data frames with an even number of
logical 1’s per byte. The port transmits XOFF and XON with
even parity. If the port detects a parity error, the port sends an
inverted question mark to the printer instead of the character
sent by the host system.
Odd The port expects to receive data frames with an odd number of
logical 1’s per byte. The printer transmits XOFF and XON with
odd parity. If the printer detects a parity error, the port sends
X'5F' to the printer instead of the character sent by the host
system.
None
The port expects no parity bit when it receives data. The port
transmits XON and XOFF without parity bits.
Ignore The port expects a parity bit when the port receives a data
frame. The port ignores the parity bit. The port uses even parity
when it transmits XON and XOFF.
Honor DSR
(only available if
configured for
RS-232)
Off*
On
The Honor DSR setting determines whether the printer uses the Data Set
Ready (DSR) signal. DSR is one of the handshaking signals for most serial
interface cables. If
Honor DSR is set to Off , data received by the serial
interface is seen as valid data. If
Honor DSR
is set to
On
, only data received
while the DSR signal is in high condition is treated as valid data.
The serial interface uses DSR to distinguish if data sent by the computer
from data created by electrical noise in the serial cable. This electrical noise
can cause receive errors and can cause stray characters to print.
Set Honor DSR On to prevent any stray characters from printing.
Serial Menu Selections (Continued)
Menu Item Values and Functions of the Menu Items
* Factory default