Epson ActionPrinter L-750 User Manual page 86

Note:
The column heading "Direction" refers to the direction of
l
signal flow as viewed from the printer.
"Return" denotes the twisted-pair return, to be connected at
l
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
l
and the fall times of
Data transfer must be carried out by observing the ACKNLG
l
or BUSY signal. (Data transfer to this printer can be carried
out only after receipt of the
level of the BUSY signal is LOW.)
Interface timing
The figure below
each
signal must be less than 0.2 µs.
shows
the timing for the parallel interface.
ACKNLG
signal or when the
Technical Specifications 5-9
Interface Specifications