Re: cb_pcidas.c - mux speed

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On Thursday 19 June 2003 02:15 pm, David Schleef wrote:
> On Thu, Jun 19, 2003 at 01:06:08PM -0400, Kenneth Jacker wrote:
> > What is the minimum time in between calls to comedi_data_read() each
> > specifying a different channel?  Another way to ask the same question
> > is how quickly can the analog MUX on our MCC PCIDAS1602/16 accurately
> > switch between channels?

Actually it's not the same question, since comedi_data_read() will never 
give you any settling time.  You need to use comedi_data_read_delayed() 
(see a recent version of the comedilib docs).

>
> Currently, you need to look up this information in the board manual.
> There is a field in the subdevice info structure for this, but not
> many of the boards support it yet, and there's no library function
> to access it.
>

- -- 
Frank

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Received on 2003-06-19Z19:01:59