Interface specifications – HP 330 User Manual

Page 158

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Interface specifications

Below are the parallel and serial interface specifications. On the following page
are the pin configurations for the most common HP cables referenced on page
10–11.

Parallel (Bi-Tronics/Centronics)
Interface

Pin

Wire/Signal Name

Source

Interface

The connector on the plotter is 36 pin

1

Strobe

computer

The connector on the plotter is 36-pin
female.

2 ... 9

D0 ... D7 (data lines)

both

Most existing parallel cables support

11

Busy

plotter

Most existing arallel cables su

ort

Bi-Tronics communication, but, for use

12

PError

plotter

with this plotter, the cable

must meet

the specification in this table

13

Select (SelectOut)

plotter

the s ecification in this table.

IEEE

ibl

14

AutoFd

computer

IEEE-1284-compatible.

16

GND

19 ... 30

GND

31

Init

computer

32

Fault

plotter

36

SelectIn

computer

Serial (RS-232-C) Interface

Pin

Wire/Signal Name

Source

The connector on the plotter is 25 pin

1

Protective Ground

The connector on the plotter is 25-pin
female.

2

Transmitted Data

DTE

The plotter is configured as DTE (data

3

Received Data

DCE

The lotter is configured as DTE (data
terminal equipment).

4

Request to Send

DTE

q

)

Data is transmitted on Pin 2 and

6

Data Set Ready

DCE

Data is transmitted on Pin 2 and
received on Pin 3.

7

Signal Ground

20

Data Terminal Ready

DTE

Localization Note. Identical to Loquillo 750C UG p11-7 (except for page reference in first
paragraph, IEEE–compatibility note and bleeding tab).

Reference

Interface specifications

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