The column heading “Direction” refers to the direction of signal
flow as viewed from the printer.
“Return” denotes the twisted-pair return, to be connected at
signal ground level. For the interface wiring, be sure to use a
twisted-pair cable for each signal and to complete the
connection on the return side.
All interface conditions are based on TTL level. Both the rise
and the fall times of each signal must be less than 0.2
microseconds.
Data transfer must be carried out by observing the ACKNLG or
BUSY signal. (Data transfer to this printer can be carried out
only after receipt of the ACKNLG signal or when the level of
the BUSY signal is LOW.)
Interface timing
The figure below shows the timing for the parallel interface.
8-12 Technical Specifications
Summary of Contents for SQ-2550
Page 1: ...EPSON SQ 850 SQ 2550 24 NOZZLE INK JET PRINTER USER S GUIDE ...
Page 3: ...EPSON S Q 8 5 0 2 5 5 0 User s Guide ...
Page 25: ...3 Close the ink cartridge compartment cover Setting Up the Printer 1 13 ...
Page 153: ...The Cut Sheet Feeder 5 6 Using Printer Options ...
Page 181: ...Interface Boards 5 34 Using Printer Options ...
Page 287: ...Appendix Proportional Width Table A 2 Character Tables A 6 Appendix A l ...
Page 293: ...Character Tables EPSON Extended Graphics Character Table Appendix A 7 ...
Page 310: ......
Page 312: ...Print Enhancement Word Processing ...
Page 313: ......