[time-nuts] Re: Accuracy of a sound card

[John Miles]

I _strongly_ recommend National Instruments for anything GPIB-related.  It
is much cheaper on eBay than buying anything new from Agilent, and much
better for your sanity than buying anything from an unheard-of GPIB
manufacturer.

I write a fair amount of homebrew T&M software; most of it is available for
free with full source code, and it all requires NI488.2 hardware, because
that's what I have.  (Not to thread-jack, but I just released a nifty new
phase-noise utility that duplicates most of the functionality of the HP
85671A package, for instance -- see
http://www.speakeasy.org/~jmiles1/ke5fx/pn.htm).

I have a lot of respect for NI as a company due to their quality hardware,
good documentation, and ongoing free support for older products.

-- john, KE5FX


> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Daun Yeagley
> Sent: Monday, August 22, 2005 7:50 PM
> To: Tom Van Baak; Discussion of precise time and frequency measurement
> Subject: RE: [time-nuts] Re: Accuracy of a sound card
>
>
> Agilent also now has a USB to GPIB converter.  Of course it's
> several hundred
> dollars also, and uses the Agilent I/O libraries.  Not sure, but
> I think that it
> only supports Windoze.  I'll check with some of my buddies that
> survived to see
> it that's the case.
>
> Daun
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Tom Van Baak
> Sent: Monday, August 22, 2005 10:43 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Re: Accuracy of a sound card
>
>
> > I know.... :-(  I checked the NI prices and for such a card they want a
> > couple hundreds Euros or more...
> > I am wondering... I know of the existence of USB <=> RS232 adaptors. May
> > be someone sells also USB <=> GPIB converters ? Nobody knows ?
> >
> > 73  Alberto  I2PHD
>
> Alberto,
>
> I do almost all my logging with RS-232. It has the
> advantage that it's OS-independent; i.e., it requires
> no device drivers (since almost any OS supports
> RS-232 out-of-the-box).
>
> You can find cheap, surplus RS232-GPIB converters
> which will work well on a HP 5328A.
>
> To get more serial ports on a PC I use 4- or 8-way
> USB-serial converters. Again these can be found
> surplus for next to nothing. My favorite are those
> by Edgeport.
>
> /tvb
>
>
>
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