P rin t e r I n t e rf ace I n f o rmat io n

HP De skWrit e r P rin t e rs

RS-422 Interface Connector (8-pin Mini-DIN)

TxD+

RxD+

TxD-

RxD-

Ground

HSKo or DTR1

RS-422 Interface Port (AppleTalk)

Pin Number

Interface Pin Name

Interface Pine Description

1

DTR

Data Terminal Ready Output Handshake

2

NC

No Connection in Printer

 

 

(Do not connect to ground or any other pin)

 

 

 

3

TxD-

Transmit Data Line

4

Ground

Shield Ground

 

 

 

5

RxD-

Receive Data Line

6

TxD+

Transmit Data Line

 

 

 

7

NC

No Connection

8

RxD+

Receive Data Line

 

 

 

Note HP DeskWriter printer interface ports conform to RS-422 and cannot be configured to operate as RS-232-C.