User`s manual

WP-233 Printer User’s Manual 25
Serial Interface Voltage Levels
Received data: Mark = OFF = Logic “1” = -25V to -3V
Space = ON = Logic “0” = +25V to +3V
Clear to send: Busy = OFF = Logic “1” = -9V
Not Busy = ON = Logic “0” = +9V
Transmitted data: Mark = OFF = Logic “1” = -9V
Space = ON = Logic “0” = +9V
1. Connectors
On the printer: 25-hole receptacle, equivalent
to DB-25S (Canon)
On the cable: 25-pin plug, equivalent to DB-
25P (Canon) Shell equivalent to DB-C2-J9
(Canon)
2. Cable
Use cable less than 25 feet long. A shielded
cable using twisted pair conductors is
desirable.