Oki Microline 590 - Page 119

C – 6
Signal levels
RS-232C interface signal levels are as specified below, and meet EIA Standard RS-
232C.
- 15 to - 3V : LOW = OFF = LOGIC “ 1 ”
+ 15 to + 3V: HIGH = ON= LOGIC “ 0 ”
Circuit
(1) Driver
(2) Receiver