Epson DFX-8000 User Manual - Page 253
Technical, Specifications
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Interface Specifications Signal Return Pin Pin Signal Direction -lptiofl 10 28 m O U T A b o u t a 1Pmicrosecond pulse. LOW indicates that data has been received and that the printer is ready to accept more data. 11 29 BUSY OUT A HIGH signal indicates that the printer cannot receive data. The signal goes HtGH in the following cases: 1) during data entry (ea. char. time) 2) when off line 3) during a printer error state 4) during printing 12 30 PE OUT A HIGH signal indicates that the printer is out of paper. 13 - - - Pulled up to +5 volts through 3.3K ohm resistance. 14 - m IN When this signal is LOW, the paper is FEED automatically fed one line after printing. (The signal level can be fixed to this by turning on DIP switch 2-4.) 15 - NC - Not used. 16 - ov - Logic ground level. 17 - C H A S S I S - Printer's chassis ground, which is GND isolated from the logic ground. 18 - NC - Not used. 19-30 - GND - Twisted-pair return signal ground level. 31 - lNlf IN When this level becomes LOW, the printer controller is reset to its power-up state and the print buffer is cleared. This level is usually~H/GH; its pulse width must be more man 56 microseconds at the receiving terminal. 8-12 Technical Specifications