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Digital Multimeter Interface?

 
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Nelson

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Since: Feb 27, 2004
Posts: 134



(Msg. 1) Posted: Sun May 09, 2004 9:41 am
Post subject: Digital Multimeter Interface?
Archived from groups: comp>sys>mac>scitech (more info?)

I'm looking for an inexpensive solution to interface a Digital
Multimeter to a Mac. I have found several brands of DMM's with Serial
Interfaces, but of course they only come with Windows software Sad

Ideally, I'd like a DMM with a USB interface and a Mac driver. Can
anyone give me a pointer to some possible alternatives?

Alternately, I'd settle for a USB A to D Converter with some driver
software. Last choice would be a PCI card with the appropriate
drivers.

Thanks

--
Nelson

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Joseph Gwinn

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Since: May 09, 2004
Posts: 4



(Msg. 2) Posted: Sun May 09, 2004 9:56 pm
Post subject: Re: Digital Multimeter Interface? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

In article ,
Nelson <nelson.TakeThisOut@nowhere.com> wrote:

 > I'm looking for an inexpensive solution to interface a Digital
 > Multimeter to a Mac. I have found several brands of DMM's with Serial
 > Interfaces, but of course they only come with Windows software Sad
 >
 > Ideally, I'd like a DMM with a USB interface and a Mac driver. Can
 > anyone give me a pointer to some possible alternatives?

The DMM vendors offer a programming manual. I have one from Tek. The
control codes for a DMM are not complex, so one needs only the ability
to read and write short serial strings to a serial port. The serial
port can be on a PCI card, or one can use one of the many USB-serial
converter pods, such as the one from Keyspan.

Joe Gwinn

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David Phillip Oste

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Since: Apr 25, 2004
Posts: 974



(Msg. 3) Posted: Sun May 09, 2004 10:12 pm
Post subject: Re: Digital Multimeter Interface? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

In article ,
Nelson <nelson.RemoveThis@nowhere.com> wrote:

 > I'm looking for an inexpensive solution to interface a Digital
 > Multimeter to a Mac. I have found several brands of DMM's with Serial
 > Interfaces, but of course they only come with Windows software Sad

I've used Keyspan USB <-> RS232 converters, and the programmer's
reference manual for the devices to get similar devices going on Macs,
but then, I'm a programmer.

 > Ideally, I'd like a DMM with a USB interface and a Mac driver. Can
 > anyone give me a pointer to some possible alternatives?
 >
 > Alternately, I'd settle for a USB A to D Converter with some driver
 > software. Last choice would be a PCI card with the appropriate
 > drivers.

If you can live with 20hz .. 20 Khz, +/- 1 volt, 2 channels, you
can just use the audio line in ports. If your Mac doesn't have
audio line in, Griffin Technology makes a cheap audio <-> USB
device.

You might look at:

<a rel="nofollow" style='text-decoration: none;' href="http://www.phidgets.com/" target="_blank">http://www.phidgets.com/</a>

There is also <http://www.pasco.com/>, a company that makes fairly
inexpensive USB sensors for the school market.
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