Re: multiq3 driver: wrong value returned

Hi Frank,

I don't know. I will try and use a voltmeter to check that,

  Peter.

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| Prof. Peter J Gawthrop           | Tel: +44 141 330 4960/2528      |
| Centre for Systems and Control & | Fax: +44 141 330 4343           |
| Dept. of Mechanical Engineering  | Room: James Watt 653            |
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From: Frank Mori Hess <fmhess_at_users.sourceforge.net>
Subject: Re: multiq3 driver: wrong value returned
Date: Mon, 13 Oct 2003 15:02:05 -0500

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> On Monday 13 October 2003 01:57 pm, Peter Gawthrop wrote:
> > Hi,
> >
> > I am using comedi-0.7.67 with the multiq3 driver modified to avoid the
> > "Fix incorrect return value of AI insn function" (see most recent cvs
> > mod.)
> >
> > The analogue input (Quanser Consulting MultiQ-3) seems to return the
> > correct voltage V when V is negative. But when V is positive, it
> > returns V-5 volts. This seems to happen on all channels.
> >
> 
> Are you sure it doesn't return -5-V for negative V?  That's what I get it 
> should be when looking at the docs and driver.
> 
> - -- 
> Frank
> 
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Received on 2003-10-18Z17:12:37