OKI ML3390 01091308*01256402 User Manual

D-13

Appendix D: Interface Data

*

In the printer menu you can select Pin 3 and 21 (SSD), 7 and 25
(RS) or 12 and 30 (TR) as Busy line.

** Use the menu option DSR Signal to select whether the signal DM

is evaluated (option valid) or ignored (option invalid) by the
printer.

The signal levels described below are equivalent to the EIA-Stand-
ard RS-422A.

MARK Polarity: -0,2 to -6,0V:

LOW = OFF = Logical "1"

SPACE Polarity: +0,2 to +6,0V: HIGH = ON = Logical "0"

equivalent to Am 26LS32

Schwellenpegel

Differenzeingang (V)

V

+ 200 mV

- 200 mV

Eingang

Eingang

Ausgang

+ 6 V

- 6 V

Maxim
Arbeit

+

-

Maximum
Operating
Range

Signal levels

Circuits

Eingang

Ausgang +

Ausgang -

V

V

3,2 V

0,32 V
0 V

3,2 V

0,32 V

0 V

V

Ausgang -

Ausgang +

equivalent to Am 26LS31

Differentiating Input (V)

Input

Input

Output

Threshold Level

   Input

Output -

Output +

Output +

Output -