Oki Microline 3390 User Manual page 300

* 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:
SPACE Polarity: +0,2 to +6,0V: HIGH = ON = Logical "0"
Input Circuit equivalent to Am 26LS32
Input
Eingang +
Input
Eingang -
Differentiating Input (V)
Differenzeingang (V)
Schwellenpegel
Threshold Level
Output Circuit equivalent to Am 26LS31
Input
Eingang
Output -
Ausgang -
Ausgang + Output +
LOW = OFF = Logical "1"
Output
Ausgang
+ 200 mV
V
- 200 mV
Output +
Ausgang +
V
Output -
Ausgang -
3,2 V
V
0,32 V
0 V
3,2 V
V
0,32 V
0 V
Appendix D: Interface Data
Signal levels
Circuits
+ 6 V
Maximum
Maxim
Operating
Arbeit
Range
- 6 V
D-13