- From: Lutz Staemmler <staemmler_at_ibwk178.ethz.ch>
- Date: Sat, 18 Jan 2003 18:45:30 +0100
On Thu, Jan 16, 2003 at 11:38:07AM -0800, David Schleef wrote:
> On Wed, Jan 15, 2003 at 05:06:26PM +0100, Lutz Staemmler wrote:
> > Hi all!
> > I found lately the comedi driver for the NI 670x DAC card. It works
> > really nice. Only: My card is totally out of callibration, so i have
> > to reset the values. Is there a possibility to change the gain on the
> > card via the comedi driver?
>
> Calibration support has not been added to the driver. Please file
> a bug. I think most of the documentation is available to make this
> possible. How far out is the calibration?
>
Far out! Zero is o.k. So if I ask for zero, I'll get it. It is then
linear, but with a to high gain. So I'll get allready 10 V when I
request for 7 V. It goes a bit further up and stay then at about 13 V.
In the negative range it is the same. So it looks something like:
___ 13V
/
/
/
-13V ___/
-10 0 10V
Hope it helps! I'll try to check the source code of the driver,
perhaps I can figure something out. But I'm not sure whether I am able
to....
Thanks a lot!
Staetz
Received on 2003-01-18Z17:45:30