it is posibile to create project in LabView Enterprise witch can be measurment(resistance and voltage) more than 40 chanel.

[nicut]

if is posibile please send to me any near application. Thank

[Dennis_Knutson]

I'm not sure what your question is. Do you want to use the Enterprise Connetivity Toolkit to log 40 channels worth of data or are you trying to determine whether LabVIEW can acquire 40 channels worth of data from some piece of hardware?

[chutla]

Greetings!
I believe you might want to look into a VXI chassis for that. Look at the Labview Hardware catalog to see how VXI bus works. Alternatively, you COULD install three 16 channel daq cards in your PC. I'm not sure at this point which would be more expensive. The advantave of the VXI is that you have more options available for signal conditioning, which is a nice thing to have when matching lots of sensors.

Eric

[nicut]

HI,
One hardware solution is to use a DMM board with a DIO
board. With DIO board command other board with releays. I thing this is a good solution.
But i wish to know a software solution for this type of application.
I beginer in LabView and this solution is from my experince in workink with others software.
It is necessary to create one thread for each chanel, or any channel is it posibile to command independent.
If you have any application regardin of this please send to me.
By

[Dennis_Knutson]

There are numerous shipping examples. For example, if you wanted, you could use one of the NI DAQ boards with 64 single ended channels. Any of the Analog Input examples can be looked at (check out data logger examples as well). With a relay scanner and a DMM, you set up a scan list and cycle through it in a while loop or for loop (DAQ board will essentially do this for you). Maybe you'll buy a GPIB scanner of build your own and control it from a DIO board. None of the solutions requires a separate thread for each channel and you always have the possibility to acquire a single channel. I think the best place to start is write a detailed specification. What is the resolution, acquisition rate, budget, etc., and try to narrow your hardware ch
oices down. I can't point to one specific example that demonstrates everything but I'm willing to bet that most of what you need is there in smaller bits and pieces and already on your computer in the shipping examples.

[nicut]

Thanks,for your solution. My solution witch is obligatory is to use a DMM borad with DIO board.
Because the time is not critical I things is not necesary to use threads in my programs.
I whish to know now, if this type of application is posibile in LabView Enterprice(if thing YES) and pleace send to me a example for this type of application.
Thanks,
My email addres is nicut@aee.ro

[Dennis_Knutson]

It is possible and on the basis of what you've described so far, is a pretty simple task to implement. Start by looking at the shipping examples for digital I/O. Also, if you're not planning on using NI hardware for the digital I/O and the DMM, you had better make sure that you get LabVIEW drivers. If you don't, you're going to spend a lot of time trying to create your own and it's not a task I would recomend for someone just starting out with LabVIEW.