Re: Incorrect range from David Schleef on 2002-12-11 (gmane.linux.comedi)

From: David Schleef <ds_at_schleef.org>
Date: Wed, 11 Dec 2002 12:26:39 -0800

On Wed, Dec 11, 2002 at 01:22:47PM -0600, Jason Z. Guo wrote:
> I am using National Instruments pci-6071e card and
> comedi-0.7.65/comedilib-0.7.19. The problem is when I use
> comedi_get_range() to query the output range of subdevice 1(i.e. analog
> output) with range index 2 (range should be +/- EXTREF), it always
> returns [-1, 1] no matter EXTREF is disconnected or connected to 1Vol or
> 1.2Vol.

This is correct, since that range structure also has the RF_EXTERNAL
flag set, meaning that it's in units of the external reference, not
voltage.



dave...

Received on 2002-12-11Z20:26:39