Lexmark X644E User Manual
Download Technical reference manual of Lexmark T642dtn All in One Printer, Finishers for Free or View it Online on All-Guides.com. This version of Lexmark T642dtn Manual compatible with such list of devices, as: T642dtn, X644E, X646e MFP, X850e, X852e
Brand: Lexmark
Category: All in One Printer , Finishers , Printer , Printer Accessories
Type: Technical reference manual
Model: Lexmark T642dtn , Lexmark X644E , Lexmark X646e MFP , Lexmark X850e , Lexmark X852e , Lexmark X854e
Pages: 416
Interfaces
8-18
SLCTIN* Receiver for the Lexmark X644e and X646ex
The following diagram illustrates the SLCTIN* receiver for the Lexmark X644e and
X646ex.
Serial Interface
The serial interface allows data to flow back and forth between the computer and the
printer. However, the serial interface transfers data at a slower rate than the parallel
interface.
If a serial connector is required, you may be able to install an RS-232C Serial Interface
Card, an External Serial Adapter, or an RS-232C Serial/Parallel 1284-C Interface
Card. See your printer documentation for more information.
Use RS-232C serial interface if the printer is more than 3.04 m (10 ft) from the
computer but less than 15.24 m (50 ft) away. (You can also use a 6.1 m (20 ft) Lexmark
cable to connect a printer and a computer located up to 20 feet apart.)
When using the serial interface, your printer has the following differences from the
serial interface on some other printers:
• The printer returns XON/XOFF with 2 stop bits in all cases.
• The printer does not support DTR inversion.
Using the RS-232C Serial Interface
This section describes how to use the RS-232C serial interface.
Connector
Pin
39 ohm
±
10%
GND
74LVC161284
1500 pF
±
20%