Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Lez <lez.briddon@...> wrote:
>
> > Did you make sure it's the serial port
> >  version?

> Yes it said it was serial and had a cable, thats what sold me on it,
> no more cable problems......
> 
> I bet its going to have a 25way cable not a 9 pin..
> 
> Is it important that its serial ?

Yes, it'll be 25 pin. You will also need to wire up an adapter as the
pins aren't quite standard.

Yes, it's very important that it be serial. HP plotters also come with
an HP-IB interface, it is almost like SCSI in that it is an 8 bit
parallel bus with addresses for each device. It requires an HP-IB
interface card in your computer. ISA HP-IB cards go for about $150
even used, and $400 for PCI versions.

So yes, it's important that it be serial.

Google for info on the correct cabling for RS232 to HP serial:
http://www.blobulent.com/hp300/FAQ/rossspon/dip.htm

Here's the complete manual scanned at Luberth.com:
<http://www.luberth.com/help/HP_7475_Graphics_plotter_operation_and_interconnection_manual/>

Steve Greenfield