ComputerVoltageSources

Thinking about it, I believe this would also account for varrainces in
the ADC's thenselves would'nt it?

Larry T.

--- In ComputerVoltageSources@yahoogroups.com, "Larry T." <larry@...>
wrote:
>
> HI All
> 
> Given that I'm not an EE or even a decent hobby designer, why is this
> calibration such a problem?  Why not use trim pots and the Analog
> inputs themselves as follows:
> 
> First: Ground the input to be calibrated. (This should ALWAYS be a
> constant of 0 right?)
> 
> Second: Run a small program on the modules CPU to continously return
> the value of the converters input via the serial port to a 'telnet'
> session on a PC or Mac, followed by a Carriage Return and a Line Feed.
>  (This will give you a continous dump of the converters value down the
> screen.)
> 
> Third: Adjust the timpot until you get 0.00... as the returned value,
> and it stays that way for a minute or two.
> 
> Would'nt this handle it with NO tools of any kind except those we
> already need to use the module anyway?
> 
> Larry T.
>