Digital Equipment DEClaser 320, Руководство по обслуживанию

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A.1 Interface Interconnections
Table A–1 (Cont.) Parallel Interface Pin Assignment
Pin Direction Signal Description
10 From printer ACKNLG L ACKNLG pulse low indicates data
received and ready to receive more
data.
11 From printer BUSY H BUSY "high" indicates the printer
cannot receive data (buffer full).
BUSY high occurs when the
printer is paused or an error
condition exists. The polarity of
this signal is selectable from the
Set Up menu.
12 From printer PE H PAPER END high signal indicates
paper out.
13 From printer SLCT H A high signal indicates the printer
is in the select state.
A low signal occurs when printer
is de-selected or if an error
condition exists.
14 From printer Ground
15 From printer Stunt box signal 2 MHz clock
16 From printer 0 Volts Logic ground
17 Chassis Ground
18 From printer +5 volts
19-29 0 Volts TWP returns all at Logic ground
30 0 Volts INIT ground
31 To printer INIT L INIT L (low) resets the printer
to its initial state and clears the
buffer. The printer must see
a pulse > 50 microseconds to
activate this signal.
32 From printer ERRORL Goes low when an error condition
occurs in the printer.
33 Open
34 Not used
35 Ground
36 From printer DP Busy Not used
Supplemental Information A–3