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Instrument with analog output, cheap and on RS232/USB

Started by Klaus Kragelund November 3, 2012
Hi

For a test setup I often need an analog signal to feed into the device under test.

So I need a instrument with an anlog output. It needs to run on RS232 or USB

I could roll my own, with a eval board, but have no time to spend on that

Anyone know of a cheap model (no the National Instruments, NIDaqs, they are prohibitive expensive)

Thanks

Klaus
"Klaus Kragelund" <klauskvik@hotmail.com> wrote in message 
news:ed83b698-f66d-4909-ab4e-b51f5fe9027d@googlegroups.com...
> Hi > > For a test setup I often need an analog signal to feed into the device > under test. > > So I need a instrument with an anlog output. It needs to run on RS232 or > USB > > I could roll my own, with a eval board, but have no time to spend on that > > Anyone know of a cheap model (no the National Instruments, NIDaqs, they > are prohibitive expensive) > > Thanks > > Klaus
Anything here: http://www.phidgets.com/products.php?category=0
On Sat, 3 Nov 2012 05:36:54 -0700 (PDT), Klaus Kragelund
<klauskvik@hotmail.com> wrote:

>Hi > >For a test setup I often need an analog signal to feed into the device under test. > >So I need a instrument with an anlog output. It needs to run on RS232 or USB > >I could roll my own, with a eval board, but have no time to spend on that > >Anyone know of a cheap model (no the National Instruments, NIDaqs, they are prohibitive expensive)
Bandwidth? Memory depth? Resolution? Sync trigger? This http://www.circuitspecialists.com/dds-3005usb.html might do the job and it's fairly inexpensive. -- Rich Webb Norfolk, VA
"Klaus Kragelund" <klauskvik@hotmail.com> wrote in message 
news:ed83b698-f66d-4909-ab4e-b51f5fe9027d@googlegroups.com...
> Hi > > For a test setup I often need an analog signal to feed into the device > under test. > > So I need a instrument with an anlog output. It needs to run on RS232 > or USB > > I could roll my own, with a eval board, but have no time to spend on > that > > Anyone know of a cheap model (no the National Instruments, NIDaqs, > they are prohibitive expensive) > > Thanks > > Klaus
Have you looked at Measurement Computing? They are inexpensive, less than NI. <http://www.mccdaq.com/solutions/USB-Data-Acquisition.aspx> Cheers
On 11/3/2012 8:36 AM, Klaus Kragelund wrote:
> Hi > > For a test setup I often need an analog signal to feed into the device under test. > > So I need a instrument with an anlog output. It needs to run on RS232 or USB > > I could roll my own, with a eval board, but have no time to spend on that > > Anyone know of a cheap model (no the National Instruments, NIDaqs, they are prohibitive expensive) > > Thanks > > Klaus
I assume a standard USB stereo audio adapter for the PC won't work? Rick
Klaus Kragelund <klauskvik@hotmail.com> wrote:

>Hi > >For a test setup I often need an analog signal to feed into the device under test. > >So I need a instrument with an anlog output. It needs to run on RS232 or USB > >I could roll my own, with a eval board, but have no time to spend on that > >Anyone know of a cheap model (no the National Instruments, NIDaqs, they are prohibitive expensive)
You can use a cheap PLC like this: http://www.xlogic-plc.com/ or a programmable power supply like this: http://www.ebay.com/itm/261050328132 -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------
On Saturday, November 3, 2012 1:52:18 PM UTC+1, Dennis wrote:
> "Klaus Kragelund" <klausssskvik@hotmail.com> wrote in message > > news:ed83b698-f66d-4909-ab4e-b51f5fe9027d@googlegroups.com... > > > Hi > > > > > > For a test setup I often need an analog signal to feed into the device > > > under test. > > > > > > So I need a instrument with an anlog output. It needs to run on RS232 or > > > USB > > > > > > I could roll my own, with a eval board, but have no time to spend on that > > > > > > Anyone know of a cheap model (no the National Instruments, NIDaqs, they > > > are prohibitive expensive) > > > > > > Thanks > > > > > > Klaus > > > > Anything here: http://www.phidgets.com/products.php?category=0
Yes, just what I needed. Thanks :-)
On Saturday, November 3, 2012 10:05:40 PM UTC+1, Nico Coesel wrote:
> Klaus Kragelund <klausssskvik@hotmail.com> wrote: > > > > >Hi > > > > > >For a test setup I often need an analog signal to feed into the device under test. > > > > > >So I need a instrument with an anlog output. It needs to run on RS232 or USB > > > > > >I could roll my own, with a eval board, but have no time to spend on that > > > > > >Anyone know of a cheap model (no the National Instruments, NIDaqs, they are prohibitive expensive) > > > > You can use a cheap PLC like this: > > http://www.xlogic-plc.com/ > > > > or a programmable power supply like this: > > http://www.ebay.com/itm/261050328132 >
The supply is really nice, and I need one of those anyway. Wonder how the reliability is (MTBF), chinese build you know Regards Klaus
On 03/11/2012 23:33, Klaus Kragelund wrote:
> On Saturday, November 3, 2012 10:05:40 PM UTC+1, Nico Coesel wrote: >> Klaus Kragelund <klausssskvik@hotmail.com> wrote: >> >> >> >>> Hi >> >>> >> >>> For a test setup I often need an analog signal to feed into the device under test. >> >>> >> >>> So I need a instrument with an anlog output. It needs to run on RS232 or USB >> >>> >> >>> I could roll my own, with a eval board, but have no time to spend on that >> >>> >> >>> Anyone know of a cheap model (no the National Instruments, NIDaqs, they are prohibitive expensive) >> >> >> >> You can use a cheap PLC like this: >> >> http://www.xlogic-plc.com/ >> >> >> >> or a programmable power supply like this: >> >> http://www.ebay.com/itm/261050328132 >> > > The supply is really nice, and I need one of those anyway. Wonder how the reliability is (MTBF), chinese build you know > > Regards > > Klaus >
Be careful about the power supply - I did some hunting and found the user manual - useless - not a word about programming. I've had reasonable results from GW Instek PSP603, 60V 3.5A, documented control via Rs232 (although it needs a 12V supply poked in on one of the 9 pin d connections for this to work). Currently &#2013266083;159 from CPC in UK - cheapest programmable supply I could find - build quality not bad at all but it's obviously not in Agilent league (and nowhere near tradiitonal HP) for this money. MK
On Sun, 04 Nov 2012 09:07:19 +0000, the renowned MK <mk@nospam.co.uk>
wrote:

> >Be careful about the power supply - I did some hunting and found the >user manual - useless - not a word about programming. >I've had reasonable results from GW Instek PSP603, 60V 3.5A, documented >control via Rs232 (although it needs a 12V supply poked in on one of the >9 pin d connections for this to work). >Currently &#2013266083;159 from CPC in UK - cheapest programmable supply I could >find - build quality not bad at all but it's obviously not in Agilent >league (and nowhere near tradiitonal HP) for this money. > >MK
I bought this 30V/5A one for USD $99 (&#2013266083;61) including shipping with (isolated) USB and RS-232 interfaces. Seems to be unavailable from that source atm. I think it's okay Chinese quality, but probably rated a bit "optimistically" according to DJ's vblog. No NA safety approvals. It's a kind of spare for when the 3-output Rigol is being used or maybe for risky types of loads. http://www.amazon.com/gp/product/B0085QLNFM/ref=oh_details_o03_s00_i00 Speaking of Rigol, if you want more like a signal, these units are a bargain, in a different class quality and design-wise. They have an Ethernet interface (inherently isolated), and two signal generators, so you can generate a 50MHz sine wave frequency modulated with a 1MHz triangle wave if that's what you want. http://www.rigolna.com/products/waveform-generators/dg4062/ They have higher frequency units, but the price goes up quickly for the additional capability. Best regards, Spehro Pefhany -- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com