Printronix MVP Series Interfaces84, Table 81. Centronics Interface Signals and Pin Assignments Input Signals, Table 82. Centronics Interface Signals and Pin Assignments Output Signals

Interfaces8–4Table 8–1. Centronics Interface Signals and Pin Assignments Input Signals

Connector

Input Signals Description PIN RETURN

DATA STROBE A low active true pulse (at least 100 ns duration) from the host com-

puter to clock data into the printer

. Data lines must stabilize for at

least 50 ns before DA

A STROBE is sent.

1 19

DATA LINE 1

DATA LINE 2

DATA LINE 3

DATA LINE 4

DATA LINE 5

DATA LINE 6

DATA LINE 7

DATA LINE 8

Eight high active lines from the host computer forming a character

byte or a Control Code byte.

Refer to Configuration Option 60, Section 5.6, for DATA LINE 8

control.

PAPER

INSTRUCTION Enables EVFU control (when clocked into printer by DATA

STROBE). Effective only when Configuration Option 60 is set 60.2

and 61 is set to 61.1. DA

TA STROBE timing is the same as for data

lines.

15 14

Table 8–2. Centronics Interface Signals and Pin Assignments Output Signals

Connector

Output Signal Description PIN RETURN

ACKNLG Low active pulse from the printer to indicate the printer is ready for the

next data transfer.

10 28

SLCT A high active level (when PE level is low) from the printer to indicate the

printer is ready to receive data and the RDY switch has been activated.

32 N/A

PE A high active level from the printer to indicate a check (CHK) condition. 12 N/A

BUSY A high active level from the printer to indicate a check (CHK) condition. 11 29

5 VOLT

TEST Supplies +5V (at one Ampere) output for powering a Printronix Test

Exerciser (Exerciser not required for the L150)>

18 N/A

CHASSIS

GROUND

Connections for a cable shield.

17 N/A

SPARE

Not Used.