RS232 PINOUTS ON LAMBDA SERIAL PORTS


References:

 - LMI Engineering Services Documentation (cable specs)
 - Release 2.0 "Printer Software Guide", Appendix A.

[Tells what the SDU pinouts mean, and how to connect Toshiba P1350,
P1351, and TI855 printers.]

--------------
TI-855 PRINTER
--------------

  CENTRONICS	RS-232
     TI855	 SDU
  ----------	------
	15	4
	16	3
	17	1
	19	7
	33	5
	35	2

Jumpers: None.

DIP Switches - open is down on near edge.

	1-2-3-4-5-6-7-8
CLOSED: X X   X X X
  OPEN:     X       X X

----------
NULL MODEM
----------

For connecting the Lambda to a modem.  These pinouts have been tested
between Lambda serial port B and a Hayes SmartModem:
  
  LAMBDA
   SDU      MODEM
  ------    -----
    1    to   1
    2    to   3
    3    to   2
    4    to   5
    5    to   5
    7    to   7

Jumper 6, 8, and 20 (on both sides).

--------------------
HP LASER-JET PRINTER
--------------------

These pinouts are used for the LASER1 or LASER1+ HP printer:

  
  LAMBDA    HP LASER
   SDU      PRINTER
  ------    -------
    1    to   1
    2    to   2
    3    to   3
    4    to   20
    7    to   7

Ref: LMI Engineering Services Documentation (cable specs)

----------------
KERMIT TO KERMIT
----------------

The following pinout was tested to connect between Kermit servers on a
Lambda and a VAX:


LAMBDA		VAX
 SDU      	TTxx
------		----

 2	to	2
 3	to	3
 7	to	7

Jumpers (on the LAMBDA side): 11-7; 4-5; 6-8-20