Parallel Mode 2; Signal Descriptions - Lexmark Optra T Reference

Parallel Mode 2

Parallel Mode 2 is a feature available for many Lexmark printers. The factory default
setting is
The timing required by the printer is clearly indicated in "Standard Protocol Data
Transfer Sequence" on page 8-16. This is the classic Centronics interface timing.
By setting
or through a PJL command, the printer changes when data is valid. Once
Mode 2
of STROBE. This is the last possible host driven transition where data should be valid.
Note:

Signal Descriptions

STROBE, AUTOFD* Receivers for Most Printers
The following diagram illustrates the STROBE, AUTOFD* receivers for most printers.
Connector
Pin
.
On
to
Parallel Mode 2 Off
is set to , the printer takes data from the host computer at the trailing edge
Off
You may find this feature helpful when having data transfer reliability
problems.
+5V
1.0K ohm ±5%
470 ohm ±5%
8-20
from the printer operator panel, through MarkVision,
FCT 2828
150 pF ±20%
GND
Interfaces
Parallel
Signal