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User's Guide
Interfaces C-5
Setting Parallel Parameters
Only two Setup menu parameters affect the parallel interface:
INTRFACE and STROBE. For more information on these parameters,
refer to the Control Panel section in this guide.
Pin Assignments
Table C-1 lists the parallel connector pin assignments and signal require-
ments.
Table C-1. Parallel Pin Assignments
Pin Signal Source Printer Usage
1 STROBE– Computer Must pulse low for at least 0.5 micro-
second to clock data on DB1-DB8 lines;
data must be present for at least 0.5
microsecond before and after pulse
)Note: The STROBE parameter on the
Setup menu lets you control whether the
printer captures the data byte on the
leading or trailing edge of STROBE–.
2 DB1 Computer Must contain eight bits of parallel data
3 DB2 Computer byte (DB1 = LSB); high signal repre-
4 DB3 Computer sents logical "1", low signal represents
5 DB4 Computer logical "0"
6 DB5 Computer
7 DB6 Computer
8 DB7 Computer
9 DB8 Computer
10 ACK– Printer Pulses low for at least 4 microseconds
when printer has received data byte on
DB1-DB8 lines and is ready for another;
also pulses low when printer is turned on
or reset
User's Guide
Interfaces C-5
Setting Parallel Parameters
Only two Setup menu parameters affect the parallel interface:
INTRFACE and STROBE. For more information on these parameters,
refer to the Control Panel section in this guide.
Pin Assignments
Table C-1 lists the parallel connector pin assignments and signal require-
ments.
Table C-1. Parallel Pin Assignments
Pin Signal Source Printer Usage
1 STROBE– Computer Must pulse low for at least 0.5 micro-
second to clock data on DB1-DB8 lines;
data must be present for at least 0.5
microsecond before and after pulse
)Note: The STROBE parameter on the
Setup menu lets you control whether the
printer captures the data byte on the
leading or trailing edge of STROBE–.
2 DB1 Computer Must contain eight bits of parallel data
3 DB2 Computer byte (DB1 = LSB); high signal repre-
4 DB3 Computer sents logical "1", low signal represents
5 DB4 Computer logical "0"
6 DB5 Computer
7 DB6 Computer
8 DB7 Computer
9 DB8 Computer
10 ACK– Printer Pulses low for at least 4 microseconds
when printer has received data byte on
DB1-DB8 lines and is ready for another;
also pulses low when printer is turned on
or reset