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P r i n t e r I n t e r f a c e I n f o r m a t i o n H P D e s k W r i t e r P r i n t e r s
RS-422 Interface Connector (8-pin Mini-DIN)
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.
TxD+
RxD+
TxD-
RxD-
Ground
HSKo or DTR
1