Leonard Erickson wrote in a message to Roy J. Tellason:

 -=> Quoting Roy J. Tellason to Leonard Erickson <=-

 RJT> Leonard Erickson wrote in a message to Roy J. Tellason:
 LE>  
 LE> There's also a 8 position DIP switch inside (probably for setting 
 LE> serial parameters).
 LE>  
 RJT> That could be somewhat more difficult.  
 LE>  
 LE> Gets better, there's a block of jumpers by the serial port. I
 LE> couldn't see them until I opened it up and seperated the two
 LE> circuit boards.  

 RJT> This is where one of those RS232 test lights comes in *real* handy... 
 RJT> :-) 

 LE> Except when you are dealing with an *input*. 

Easy -- then the light stays *off*.  :-)

I have one of those,  plug it into one device,  see what lights up,  then
into the other,  and if some of the same lights come on I know I need a
crossover cable,  null modem adapter,  whatever you want to call it...

If nothing else it's handy to tell you which pins are inputs and which are outputs.

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