Epson Action Laser - Manual (Page 200)

Interface Specifications
Signal levels
Output signals:
Input signals:
V
OL
, = 0 to 0.4 v
V
OH
= 2.4 to 5.0 V
V
IL
= 0 to 0.8 V
V
IH
= 2.0 to 5.0 v
Serial interface
The laser printer’s built-in serial interface can be set for either
RS-232C or RS-422A operation. These interfaces have the following
characteris tics.
Data format
Word length: 7 or 8 bits
Parity: 0 or 1 bit (None, Odd, Even, Ignore)
Start bits: 1 bit
Stop bits: 1 or 2 bits
The data format can be set using functions and menu items in
SelecType.
Baud rate
300, 600, 1200, 2400, 4800, 9600, 19200 bits per second.
Signal level
RS-232C: V
H
= 2.2 to 12v
V
L
= -1.4 to -12v
RS-422A: V
H
= 2.5 to 5V
V
L
= 0 to 0.5v
B-10 Technical Specifications