Linux SDK w/ startup kit

Online Technical Assistance for DI-148U, DI-158U/UP, DI-194RS, DI-154RS, and DI-195B Starter Kits.

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Linux SDK w/ startup kit

Postby sean.matthews » Thu Sep 17, 2009 2:10 pm

When using the Linux SDK with the starter kit, what features are NOT available? Can I set the voltage limits (+/- 10V, 0-10V, etc.)?

Thanks,
Sean
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Re: Linux SDK w/ startup kit

Postby sean.matthews » Thu Sep 17, 2009 3:49 pm

Also, can the Linux SDK use more than one analog input channel at a time?
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Re: Linux SDK w/ startup kit

Postby DaqGuy » Thu Sep 17, 2009 4:29 pm

What specific starter kit model do you have?
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Re: Linux SDK w/ startup kit

Postby frmsup » Fri Sep 18, 2009 7:45 am

The SDK only supports the 154/194 starter kits. It supports acquiring from all analog and/or digital inputs. It doesn't have special support for the square wave generator; outputs the wave if digital channels aren't being acquired, disables it otherwise. The rest is mostly a limit of the starter kit devices themselves. Also, the SDK doesn't support any of the advanced features available in WinDaq, as WinDaq provides them, not the hardware.
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Re: Linux SDK w/ startup kit

Postby sean.matthews » Fri Sep 18, 2009 8:55 am

Thanks for your replies.

I have the DI-194RS. Does the SDK support changing the voltage limits on each channel? Or, is this a WinDaq addition?

-Sean
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Re: Linux SDK w/ startup kit

Postby frmsup » Fri Sep 18, 2009 9:02 am

The DI-194RS has a hardware range of +-10V, no gain settings, so it's always +-10V. If you are referring to the scaling or conversion to engineering units, yes, that's a WinDaq thing. The SDK simply provides you a way to configure the hardware device and read the resulting data.
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Re: Linux SDK w/ startup kit

Postby Ido » Wed Aug 18, 2010 11:41 am

Hi everyone

Thank you for Having developped a SDK for Linuxian.

Hi plan seriously to order a DI-148 or a DI-158.
Howver a need to know if the sDK support higher sampling rate than 240hz .
That is to say can we sample at 14.4khz ???

Otherwise is the design of the sdk allow to go through the 240hz limit ?

Thank you
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Re: Linux SDK w/ startup kit

Postby DaqGuy » Wed Aug 18, 2010 11:45 am

Maximum sample rate is limted only to the efficiency of your program and the speed of your PC or 14.4 KHz, whichever is smaller, if you use the SDK.
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Re: Linux SDK w/ startup kit

Postby Ido » Wed Aug 18, 2010 12:08 pm

Hi Thank You for your answers.

Do you mean that the program have to loop for queries on the device.
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Re: Linux SDK w/ startup kit

Postby Ido » Wed Aug 18, 2010 12:13 pm

I don't know how to edit post.

Actually i was thinking of setting a rate to the hardware then reading a internal buffer.
Maybe thi architecture is for hiher price device...
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Re: Linux SDK w/ startup kit

Postby Ido » Wed Aug 18, 2010 12:34 pm

It seems that the D148 have a 2kb buffer and have a scnning mode.

Is this mode , provided in WinDaq® High Speed Data Acquisition is available in the linux SDK.

Otherwise is dataq plan to document this part.
Thank You
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Re: Linux SDK w/ startup kit

Postby DaqGuy » Wed Aug 18, 2010 12:49 pm

The Linux SDK does not support the DI-148 or the -158, and there are no plans to provide one for that OS.
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