Getting data with a Keithley KPCI-3108

[Kirkwood]

Hello,

I am a first timer with labview and have a couple questions about the Keithley interface.

I want to have the program get 3 inputs and time stamp the values, and run this continuously.

so basically write to file [time, x1, x2, x3].  But the problem i'm getting is trying to get labview to just view the channel and read it continuously.

I'm using the Keithley drivers and the VI's that they supply with the DAQ board, and i am able to read the channels, I just get confused when I have to write the data and understand what I am getting out.

Right now I am using the KI AI Waveform Scan, and I have a VI that is basically an oscilloscope, so I know that I'm reading values from my channels correctly (hooked up to signal generator and oscilloscope so that my Waveform graph matches the oscilloscope),

but it reads it in packets, so that the data files i'm outputting are not continuous its like bits of 0-999, 0-999 instead of 0-2000.  I know this is because I tell it to read the data in scans/sec and then tell it how many scans to read, but I'd like to just get data, like every 0.001 second and put this into a file.

Again, this is my first time even working with labview, so I appreciate your help.

Thank you,

Keith

[craigherdman]

Keith,

I have personally never worked with this device so I probably won't be able to be of much help. Perhaps someone in the community has worked this this before. I did not notice this instrument driver on our website so you must have obtained it from another source in which case we probably can't be of much help. In that case I would recommend talking to the folks who wrote the code to see what advice they can give. If I am mistaken and we do have this instrument driver on our website then that is something that we can work with (and if you could point me in the right direction as to where to download it that would be great).

Now if this is a non-National Instrument DAQ board then you will surely have to contact the manufacturer of the board. Hope that helps!

Craig H.

[Kirkwood]

Thanks for you help craig,

Keithley just takes the same functions that NI writes and makes them work for their products. That is what I gather from it anyhow.

-Keith

[JSC81]

Hello all, 

I know this is an old post but Kirkwood, did you by any chance figure this out?  

I am using the same board Keithley KPCI-3108 and I have multiple channels (Pressure, Temperature1, temp2, temp3) and I want to read this from the data aquisition board into labview.  

Any luck getting something like this to work.  I am kind of on a time schedule because it has to do with my graduate research but I would appreciate it if anyone had any jumpstarts.  

Thanks,

Jerry 

[Dennis_Knutson]

Presumably you have the drivers from Kiethley? If you don't, then that is the first thing to do. If you have a specific problem with the driver, it would probably be best to contact Keithley. All that you have mentioned is that you are on a time schedule. You have not posted exactly what your problem is.

[JSC81]

Yes, I am sorry.  I have the DAQ with the drivers.  I have them installed...along with the current version of Labview.  

I want to be able to use this data acquisition (KPCI-3108) board to get continuous readings from a pressure transducer and several thermocouples and have them plotted on graphs.  

What are the steps I need to take in order to do this?   

Hope that is closer to what is needed.   

Jerry