Interface Specifications

 

 

Signal levels

 

 

Output signals:

VOL, = 0 to 0.4 v

 

VOH = 2.4 to 5.0 V

Input signals:

VIL

= 0 to 0.8 V

 

VIH

= 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:

VH = 2.2 to 12v

 

VL = -1.4 to -12v

RS-422A:

VH = 2.5 to 5V

 

VL = 0 to 0.5v

B-10 Technical Specifications