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 availab
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:
> 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
Alberto di Bene wrote:
An old PC is probably your best bet.
Before I start hunting for an old PC with an ISA slot, does anybody know
if Capital Equipment Corporation (the maker of my ISA GPIB card) is
still in business ?
I am fearing that finding drivers for this card won't be that easy...
73
Alberto di Bene wrote:
>I am fearing that finding drivers for this card won't be that easy...
>
>
I was wrong ! I have just found the drivers here :
http://www.cec488.com/gpibupgd.html
A free download... now the quest for the ISA PC can start... :-)
73 Alberto I2PHD
___
> An old PC is probably your best bet.
Before I start hunting for an old PC with an ISA slot, does anybody know
if Capital Equipment Corporation (the maker of my ISA GPIB card) is
still in business ?
I am fearing that finding drivers for this card won't be that easy...
73 Alberto I2PHD
Alberto di Bene wrote:
David Kirkby wrote:
If your PC has an ISA slot, or you have an older PC with an ISA slot,
then a GPIB board is not that expensive on eBay. Just save yourself a
lot of hassle and get one from National Instruments, as they are
better supported than other makes.
I have a
From: Alberto di Bene <[EMAIL PROTECTED]>
Subject: [time-nuts] Re: Accuracy of a sound card
Date: Tue, 23 Aug 2005 00:45:59 +0200
Message-ID: <[EMAIL PROTECTED]>
> David Kirkby wrote:
>
> > If your PC has an ISA slot, or you have an older PC with an ISA slot,
> > then a GPIB board is not that exp
Blackbox sells an RS-232 - IEEE488 adapter box. Search for IC026A-R2 on
www.blackbox.com.
It's not cheap, about $750.
-RL
Robert Lutwak, Senior Scientist
Symmetricom - Technology Realization Center
34 Tozer Rd.
Beverly, MA 01915
(9
National Instruments sells (or at one time, sold) GPIB adapters that will
connect to any port on your PC, including USB, parallel, RS-232, the drain
in your bathtub, you name it. They are definitely the way to go.
There are certain OS limitations; for instance, NT-based versions of Windows
includ
David Kirkby wrote:
> If your PC has an ISA slot, or you have an older PC with an ISA slot,
> then a GPIB board is not that expensive on eBay. Just save yourself a
> lot of hassle and get one from National Instruments, as they are
> better supported than other makes.
I have an ISA GPIB card colle
From: David Kirkby <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] Re: Accuracy of a sound card
Date: Mon, 22 Aug 2005 23:06:49 +0100
Message-ID: <[EMAIL PROTECTED]>
David,
> > Unfortunately, while my 5328B has the HPIB interface, my PC doesn't, so
> > I cannot collect data automatically, otherwise
Alberto di Bene wrote:
Tom Van Baak wrote:
I measured the phase, frequency and Allan deviation of
the sound card on my cheap PC. You'll enjoy the results:
http://www.leapsecond.com/pages/sound-1pps/
If any of you with a high-end sound card want to repeat
the experiment let me know.
Unfo
On 8/22/05, Tom Van Baak <[EMAIL PROTECTED]> wrote:
> I measured the phase, frequency and Allan deviation of
> the sound card on my cheap PC. You'll enjoy the results:
>
> http://www.leapsecond.com/pages/sound-1pps/
>
> If any of you with a high-end sound card want to repeat
> the experiment let
Tom Van Baak wrote:
>I measured the phase, frequency and Allan deviation of
>the sound card on my cheap PC. You'll enjoy the results:
>
>http://www.leapsecond.com/pages/sound-1pps/
>
>If any of you with a high-end sound card want to repeat
>the experiment let me know.
>
>
>
Unfortunately, while
In message <[EMAIL PROTECTED]>, "Bill Hawkins" writes
:
>">1. It is unlikely that any power network just lets itself go,
>>with no standard time/frequency to hold. The under-frequency
>>relays would make that hazardous.
>
>Does not follow."
>
>Well, it doesn't follow from the watt-hour meter, but
Poul-Henning Kamp wrote, quoting me,
">Power companies bill on time-integrated power - watt-hour
>meters in the US. Watt-hour meters are still mostly driven
>by electric clocks, in a way. The frequency does matter.
Uhm, sorry, that is just plain wrong. The Ferrantis (sp?) power
meter which is th
I measured the phase, frequency and Allan deviation of
the sound card on my cheap PC. You'll enjoy the results:
http://www.leapsecond.com/pages/sound-1pps/
If any of you with a high-end sound card want to repeat
the experiment let me know.
/tvb
___
John Day wrote:
I have never seen a power meter made by Ferranti in the US.
Try Siemens or ABB then, Ferranti has been taken over if I recall.
The term is actually Ferraris, after Galileo Ferraris, the inventer of
the AC induction motor. As far as I can tell, he had nothing to do with
watt
Hi Alberto,
The US is replacing meters too, but they are still "Ferraris" electromechanical
meters with electronic readouts. The power grid will still need to be kept
to a reasonable accuracy for the meters to read with a reasonable accuracy.
The Ferraris type meter (G. Ferraris died 3 years be
At 10:00 AM 8/22/2005, you wrote:
Poul-Henning Kamp wrote:
In message <[EMAIL PROTECTED]>,
"Bill Hawkins" writes
:
Power companies bill on time-integrated power - watt-hour
meters in the US. Watt-hour meters are still mostly driven
by electric clocks, in a way. The frequency does matter.
Uh
In message <[EMAIL PROTECTED]>, Chuck Harris writes:
>Poul-Henning Kamp wrote:
>> In message <[EMAIL PROTECTED]>, Chuck Harris writes:
>>
>>
I met a violinist some years back who suffered from a 440Hz tinitus on his
left ear. When he tuned his fiddle after that, it was 440.0Hz measured
>
Chuck Harris wrote:
> A 10% variation in line frequency would cause a 10% variation in power
> consumption registered. Induction type power meters will remain accurate
> with a 10% variation in power line voltage, however.
>
> Someday, our utilities will convert all of our meters to solidstate
>
In message <[EMAIL PROTECTED]>, Chuck Harris writes:
>> Uhm, sorry, that is just plain wrong. The Ferrantis (sp?) power
>> meter which is the most widely used meter in the world is not
>> frequency sensitive within a band of +/- 10% or more.
>
>I have never seen a power meter made by Ferranti in
Poul-Henning Kamp wrote:
In message <[EMAIL PROTECTED]>, Chuck Harris writes:
I met a violinist some years back who suffered from a 440Hz tinitus on his
left ear. When he tuned his fiddle after that, it was 440.0Hz measured
with a frequency counter.
Did you make this measurement, or were yo
Poul-Henning Kamp wrote:
In message <[EMAIL PROTECTED]>, "Bill Hawkins" writes
:
Power companies bill on time-integrated power - watt-hour
meters in the US. Watt-hour meters are still mostly driven
by electric clocks, in a way. The frequency does matter.
Uhm, sorry, that is just plain wrong
What about this:
Use an NTP client running on a Smartphone. Such NTP clients are available for
Pocket PCs, Symbian OS, etc.
Dominik Schneuwly
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Van Baak
Sent: samedi, 20. août 2005 21:00
To: Discussion o
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