Epson LQ-1000 User Manual - Page 142
Parallel Interface, Serial Interface, No trouble when 1 kilovolt R.M.S.
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Dielectric strength No trouble when 1 kilovolt (R.M.S.) 50 or 60 Hz is applied for more than 1 minute between AC power line and chassis Parallel Interface Interface Centronic® compatible, g-bit parallel Synchronization By externally supplied STROBE pulses Handshaking By ACKNLG and BUSY signals Logic level Input data and all interface control signals are TTL levels Serial Interface Interface RS-232C serial Synchronization Asynchronous Handshaking By REV signal Signal level RS-232C MARK = "1" (-3v to -27v) SPACE = "0" ( + 3v + 27v) Connector 6-pin DIN connector H-4
Dielectric strength . . . . . . . .
No trouble when 1 kilovolt (R.M.S.)
50 or 60 Hz is applied for more than 1
minute between AC power line and
chassis
Parallel Interface
Interface . . . . . . . . . . . . . . . .
Centronic® compatible, g-bit parallel
Synchronization . . . . . . . . .
By externally supplied STROBE pulses
Handshaking . . . . . . . . . . . .
By ACKNLG and BUSY signals
Logic level . . . . . . . . . . . . . .
Input data and all interface control
signals are TTL levels
Serial Interface
Interface . . . . . . . . . . . . . . . .
RS-232C
serial
Synchronization . .
Handshaking . . . . .
Signal level . . . . . .
Connector . . . . . . .
. . . . . .
Asynchronous
. . . . . .
By REV signal
. . . . . .
RS-232C
MARK = “1”
(-3v
to
-27v)
SPACE = “0” ( + 3v +
27v)
. . . . . .
6-pin DIN connector
H-4