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User's Guide
Interfaces C-1
Interfaces
This appendix describes the printer's parallel and serial interfaces,
including voltages, signals and timing, cables and connectors, pin
assignments and parameters.
Centronics Parallel Interface
The parallel interface conforms to the Centronics standard for parallel
data transfer from computers to printers. The interface contains 36 lines.
Voltages
A signal on a line is either high or low, depending on the voltage level.
Timed high-to-low and low-to-high transitions of a signal enable the
transfer of logical information. The valid parallel voltages are as
follows:
99
99
9 High (+): +2.5 to +5 volts
99
99
9 Low (-): -0.2 to +0.8 volts
C
Appendix
User's Guide
Interfaces C-1
Interfaces
This appendix describes the printer's parallel and serial interfaces,
including voltages, signals and timing, cables and connectors, pin
assignments and parameters.
Centronics Parallel Interface
The parallel interface conforms to the Centronics standard for parallel
data transfer from computers to printers. The interface contains 36 lines.
Voltages
A signal on a line is either high or low, depending on the voltage level.
Timed high-to-low and low-to-high transitions of a signal enable the
transfer of logical information. The valid parallel voltages are as
follows:
99
99
9 High (+): +2.5 to +5 volts
99
99
9 Low (-): -0.2 to +0.8 volts
C
Appendix