How to sampling rate

[tinamoli]

hello All,

I want to sample the simulate ECG waveform,and reading the samples in an array as shown in vi below,

I can choose the number of samples but not the rate of the sampling.

can you tell me how to adjust the rate ,since there is no option via the simulate ECG function  itself to do this.

[Hillman]

Hi tinamoli,

Thanks for the post and I hope your well today!

I notice you've not had any support.

I had a great example of ECG - outputting and reading it back in.. but Ive missed placed it. dam.

But bascially the control is number of samples per second i.e a rate. 

If your placing to use DAQmx tasks etc, then you would wiring this to the DAQmx write and set the rate on the DAQmx task.

Please let me know if you have any other questions,

Kind Regards,

[tinamoli]

Hello Hillman,

I really would appreciate you if you show me how to do this((adjusting sampling rate for simulate ecg function)) by a built  VI,please?

Message Edited by tinamoli on 10-23-2008 10:46 AM

[Simran_K]

Hi,

There is no place to specify rate in the Express VI but you can use DAQmx VIs. Refer to LabVIEW examples for help. To access LabVIEW examples, go to Help » Find Examples. Once you have the NI Example Finder open, double-click on the Hardware Input and Output folder and the examples are located under DAQmx.

Thank you,

[Hillman]

Hi tinamoli,

I hope your well.

As per requested, here is an example of continuously outputting an ecg signal - its the working example i had previously lost! When I say working, I spent some time this morning to make sure it worked on my cDAQ.

The example has a subVI - with the ecg toolkit for the biomedical startup kit. LabVIEW 8.5.

Let me know how you get on,

Kind Regards, 

[tinamoli]

hi Hillman,

, 

I can not open the two VI ,you sent to me,since the version i have is 8.2,

please,if possible you send me the version 8.2,that i can open it,

 thanks,

[tinamoli]

Hillman,

it is a simple problem i faced but really it stoped me from any progress in my project !!

pls,show me the vi in version 8.2

[Dennis_Knutson]

Have a little patience. It's the weekend after all. And instead of being stuck, you could have simply downloaded an evaluation copy of LabVIEW 8.6 and done the conversion yourself.

Anyway, here's the two files.

[tinamoli]

Dennis,

Thank you and sorry if any annoying........

[tinamoli]

hello Hillman,

oh,this vi in some how is complicated ,and i cant understand the procedure,

but,

can i know if this vi really giving ECG samples with particular sampling rate,

what i found i couldnt read the ECG simulate sample in an array as an output!!!