[time-nuts] General Purpose Instrument Troubles

Daun Yeagley daun at yeagley.net
Fri Nov 26 15:27:38 EST 2004

I see that Brooke has said a lot of what I said, plus a few more tidbits, all of
which are quite valid.
I do have one question about the bus analyzer in the NI cards.  Many of them
have the analyzer function built in, however they sometimes are limited to
specific OS's.  For example, I have the NI GPIB+ PCMCIA card.  The "+" indicates
that it has the analyzer function built in.  The only problem is the analyzer
program they supply is only supported through WIN 98.  I cannot use it with
either NT nor Win 2K. (I presume XP is similar).  Perhaps I should check NI's
web site, as they may have now added support for it (that would be a *very* good
thing!).  I had been told by NI that there was a problem with NT and 2K in
directly accessing the hardware, al la printers.  Brooke, if they do have a new
version, let me know, as I would find it most useful!

Daun Yeagley
(former HP/Agilent Microwave SE, now "retired")

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
Behalf Of Brooke Clarke
Sent: Friday, November 26, 2004 2:56 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] General Purpose Instrument Troubles

Hi Poul:

The newer NI 488 cards have buss analysis built in.  It is very helpful
to get a bus timing log with every change in the bus status time
stamped.  I haven't used a hardware 488 buss analyzer, but I expect that
the NI analyzer is more powerful.

Have Fun,

Brooke Clarke, N6GCE

w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml

Poul-Henning Kamp wrote:

>In message <000101c4d3ee$01050580$0500a8c0 at darius.domain.actdsltmp>, "Bill Hawk
>ins" writes:
>>I suspect that my problem is compounded incompatibilities.
>>Is 488.2 compatible with the earlier 488?
>488.2 is an upgrade, but it is backwards compatible.
>The two main causes of trouble are the CR/NL line termination
>differences and that some instruments actually want the EOT
>bit set.
>Consider buying a IEEE488 analyzer, I found my HP59401a very useful.

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