[time-nuts] OT: Test for NI IEEE-488 interface

[Ulrich Bangert]

Didier,

> I do not have a plug-in NI card (I do have a USB type 
> controller from NI
> though) so I am not sure what I am going to say will work, 
> but it's worth a try.

I am not sure by 100%, just say 99 % but I believe that the DLL
installed with ALL NI IEEE-488 interfaces is pretty much the same
regardless of the type of interface and that the handling of different
interfaces is managed completely INSIDE the DLL itself. That is why I am
hoping to find a suitable test for ALL NI interfaces and your
suggestions are well worth trying. I have currently a PCI-interface
available to make some experiments with and would like to send you some
tests for your USB based interface ASAP in case you are willing to help
me with that.

73 and my best regards
Ulrich

> -----Ursprungliche Nachricht-----
> Von: time-nuts-bounces at febo.com 
> [mailto:time-nuts-bounces at febo.com] Im Auftrag von Didier Juges
> Gesendet: Samstag, 6. Oktober 2007 16:14
> An: 'Discussion of precise time and frequency measurement'
> Betreff: Re: [time-nuts] OT: Test for NI IEEE-488 interface
> 
> 
> ); SAEximRunCond expanded to false
> Errors-To: time-nuts-bounces+df6jb=ulrich-bangert.de at febo.com RETRY
> 
> Ulrich,
> 
> I do not have a plug-in NI card (I do have a USB type 
> controller from NI
> though) so I am not sure what I am going to say will work, 
> but it's worth a try.
> 
> I believe the IEEE-488 controller has its own address (that 
> is not often used, but the IEEE-488 spec requires that), so 
> you should be able to address it and get its name. You should 
> also be able to set its time-out and ask it to query a 
> non-existant instrument and get the time out error from the 
> controller card, which I believe is different from the 
> time-out from the DLL (which you would obtain if there were 
> no controller card).
> 
> Didier KO4BB
> 
> > -----Original Message-----
> > From: time-nuts-bounces at febo.com
> > [mailto:time-nuts-bounces at febo.com] On Behalf Of Ulrich Bangert
> > Sent: Saturday, October 06, 2007 7:23 AM
> > To: Time nuts
> > Subject: [time-nuts] OT: Test for NI IEEE-488 interface
> > 
> > Gentlemen,
> > 
> > I know this is a bit OT but otherwise I also know that some
> > of you are well acquainted to IEEE-488 data acqusition:
> > 
> > Suppose I can test whether the National Instruments DLL for
> > their range of IEEE-488 interfaces is available on a Windows 
> > based system. Suppose also that I can load the DLL 
> > dynamically and find out whether all the expected function 
> > names are really exported by the DLL, i.e. if an
> > IEEE-488 interface WERE really connected to the pc I would be 
> > in full control of it.
> > 
> > What actions (DLL-calls) would you suggest for a good test of
> > the presence of an IEEE-488 interface and it's basic 
> > functionality? The test should NOT involve any communication 
> > to instruments on the bus. Its just to find out whether an 
> > interface is available and if it can be expected to be in 
> > working condition. 
> > 
> > Best regards and TIA   
> > 
> > Ulrich Bangert
> > www.ulrich-bangert.de
> > Ortholzer Weg 1
> > 27243 Gross Ippener
> > Germany
> > 
> > 
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> 
> 
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