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From: davids@hpsgl1.sgp.HP.COM (David SHUM)
Newsgroups: comp.sys.hp
Subject: Re: dip switch settings serial thinkjet hp2225d
Message-ID: <4840001@hpsgl1.sgp.HP.COM>
Date: 31 Jan 91 11:29:23 GMT
References: <1991Jan29.082858.4773@ims.alaska.edu>
Organization: Asia Peripherals Division, HP Singapore
Lines: 40

/ hpsgl1:comp.sys.hp / jsdph@acad3.alaska.edu (HARRIS DENNIS P) /  
 4:28 pm  Jan 29, 1991 /

I have emailed the following to Dennis:

For the 5 DIP switches labelled "RS-232C" (leftmost=1, rightmost=5,
U=up, D=down):

   Switch   Setting    Purpose
   ------   -------    -------
    1       U          DTR (Printer Busy)
	    D          XON/XOFF
    2 & 3   D D        No parity, 8 bits (or zero & 7)
	    D U        Odd parity, 7 bits
	    U D        Even parity, 7 bits
	    U U        Ones parity, 7 bits
    4 & 5   D D        9600 baud
	    D U        19200
	    U D        2400
	    U U        1200

For the serial interface, (input=received by printer, output=
transmitted by printer):

   Pin   Description
   ---   -----------
    1    Protective Ground (shield)
    2    Transmitted Data, output
    3    Received Data, input
    4    Request To Send, output
    7    Signal Ground
    11   Reverse Channel, output
    20   Data Terminal Ready, output

This information is from my copy of the manual and is provided
without any warranty.

David Shum
R&D -- Asia Peripherals Division
Hewlett-Packard Singapore