Homebrew_PCBs

Hello all
I have a hp7470a plotter and it pass all the test when i start it.
I am trying to wire a new cable 25-pin to 9-pin and i dit what they
show in this link :
http://www.hp.com/cposupport/plotters/support_doc/bpp01379.html
I have a question to where to conect the pin #6 from the 25-pin to
9-pin conector,the info show #6-pin from plotter data set redy to |
look like this :data set redy 6--| ,what this means ??
Also the #8 pin from the 9-pin conector show the same
: |--8 clear to send
Where should i conect this two wires ?????
Thanks
Papas

Pin 6 doesn't connect to anything on a DB9. I have a PIC16F84
talking with my HP7475a -- you just need TxD, RxD, Signal Ground and
CTS hooked up (well, you don't even need RxD hooked up since the
HP7475a is just receiving.) For those of you who are interested, I
just have a MAX232, pin 2 (+ 10V from the charge pump) to assert
a "SPACE" to pin 4 of the DB9.

Hello there
I wire the intreface the way they show on the HP info site
i set the plotter and the computer the same way ,but when ii try to
print a test page it print's one line and then it print's some garbege
and the error light start blink and stop's
If i change the baud rate to the lowest (1200)it print's some lines
and then overflow.what should i do to fix it ???
Thanks
Papas

--- In Homebrew_PCBs@y..., "caveteursus" <j.walton@a...> wrote:

> Pin 6 doesn't connect to anything on a DB9. I have a PIC16F84
> talking with my HP7475a -- you just need TxD, RxD, Signal Ground and
> CTS hooked up (well, you don't even need RxD hooked up since the
> HP7475a is just receiving.) For those of you who are interested, I
> just have a MAX232, pin 2 (+ 10V from the charge pump) to assert
> a "SPACE" to pin 4 of the DB9.

the baud rate on your computer must match that of the HP7475a. if
you are in DOS, use this command:

mode com1: 9600,n,8,1,p

you can also use hyperterminal

--- In Homebrew_PCBs@y..., "mlpapus1" <mlpapus1@h...> wrote:
> Hello there
> I wire the intreface the way they show on the HP info site
> i set the plotter and the computer the same way ,but when ii try to
> print a test page it print's one line and then it print's some
garbege
> and the error light start blink and stop's
> If i change the baud rate to the lowest (1200)it print's some lines
> and then overflow.what should i do to fix it ???
> Thanks
> Papas
>
>
> --- In Homebrew_PCBs@y..., "caveteursus" <j.walton@a...> wrote:
>
> > Pin 6 doesn't connect to anything on a DB9. I have a PIC16F84
> > talking with my HP7475a -- you just need TxD, RxD, Signal Ground
and
> > CTS hooked up (well, you don't even need RxD hooked up since the
> > HP7475a is just receiving.) For those of you who are
interested, I
> > just have a MAX232, pin 2 (+ 10V from the charge pump) to assert
> > a "SPACE" to pin 4 of the DB9.