Oki Microline 3390 User Manual page 322

Connection: 3-wire
Power source receive loop: Printer
Power source send loop: Printer
IBM Asynchronous
Adapter
D+ 9
- +
D– 11
B+ 18
B– 25
This connection is equivalent to circuit diagram 12. A circuit ac-
cording to diagram 13 is not possible with the IBM Asynchronous
Adapter, as the voltage supplied by this adapter's power source is
not sufficient for the interfaces. Please refer to the section »Techni-
cal Note« earlier on in this chapter.
You can use the Centronics Blocked Duplex protocol only in combi-
nation with above circuit.
Printer
SP4
A + -
B
D+ 9
D– 10
SP5
A + -
B
B+ 18
B– 19
GND 7
Appendix D: Interface Data
Assignment of
Short-Circuit Jumper
A B
SP1
Ready/Busy, XON/XOFF
A B
SP1 Centronics Blocked Duplex
A B
SP2
A B C
SP3
A B
SP4
A B
SP5
Diagram 17
This connection is equivalent
to circuit diagram 12.
D-35