Re: TI-H: Parallel Link Problem.
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Re: TI-H: Parallel Link Problem.
I have my Parallel link included with my expander. Pins 14-21 function as
the module port. it includes a 5v power supply. If I were to use some
transistors on pins 12 and 13, would that pull the power up high enough?
Also, would it fail the link tester program if it was only a problem with
power? Or is my only problem that it is too fast? Yes, I've check all the
connections, and nothing is touching.
----------
> From: David Knaack <dknaack@hotmail.com>
> To: ti-hardware@lists.ticalc.org
> Subject: Re: TI-H: Parallel Link Problem.
> Date: Wednesday, August 05, 1998 10:50 AM
>
>
> >I have a problem with my link. I ran the test program, and it
> returned:
> <snip>
>
> Make sure your components are all in right and the connections
> are good. I had similar results with the parallel link, problem
> was a loose connection. After I got that fixed it worked fine.
>
> If everything looks right, maybe you could use a multimeter
> to measure the current output from each pin to ground. Anyone
> know what is required?
> (This will require setting the pins high, might have to
> write a program to do that, I don't know what the idle state is.
> If the link program is active it may set them high ( to keep the
> calculator from slowing down)).
>
> DK
>
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