long duration mixed signal datalogging

[SMRTOKS]

Hi, i would like to log mixed signal data continuously for up to an hour on 2-16 channels. Frequency is 1-60MHz.

Can anyone advise which DAQ or digitizer should i use?

What are the specs that i should like out for in the cards?

Can normal LabView software help capture those data or is Flexlogger needed?

Thank you.

[mcduff]

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@SMRTOKS wrote:

Hi, i would like to log mixed signal data continuously for up to an hour on 2-16 channels. Frequency is 1-60MHz.

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Analog or digital?

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@SMRTOKS wrote:

Can anyone advise which DAQ or digitizer should i use?

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For those rates, assuming you want Analog Input, then you need to go with NI-Scope. There are digital modules that go to 50MHz, there may be ones that go higher, but a quick look did not see any.

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@SMRTOKS wrote:

Can normal LabView software help capture those data or is Flexlogger needed?

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Normal LabVIEW works if you know how to use it.

[JÞB]

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@SMRTOKS wrote:

Hi, i would like to log mixed signal data continuously for up to an hour on 2-16 channels. Frequency is 1-60MHz.

Can anyone advise which DAQ or digitizer should i use?

What are the specs that i should like out for in the cards?

Can normal LabView software help capture those data or is Flexlogger needed?

Thank you.

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Your largest hurdle is going to be the file size.  Ask yourself "Do I really need to save the raw data or, should I analyze the data on the fly and save only interesting information?"  What is "interesting" about the mixed signal data? What is the experiment trying to disprove (the null hypothesis?)

You're likely going to be better off with coding your software to meet defined requirements. 

[SMRTOKS]

Hi, its analog and digital signals. Most signals are typically below 1kHz or are static. My concern would be if the DAQ or digitizer can log large amount of data seamlessly or would it lose some data. Also which spec in the DAQ/digitizer manual should i look for to ensure it can log up to 16 channel of data continuously?

[SMRTOKS]

Yes, i believe Labview can do it but i need to reproduce the massive logged data as well. The DAQ card i have (e6378) and e6537 DIO could not produce anything above 1kHz and could not reproduce all signals simultaneously. I am not sure what hardware setting i need to use so it would be great if someone can advise a better DAQ or DIO card and what spec or setting i should look for. Thanks.  

[mcduff]

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@SMRTOKS wrote:

Hi, its analog and digital signals. Most signals are typically below 1kHz or are static. 

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Before it was 60MHz signals which implies 120MSa/s. I'll assume you are looking for an USB device not a PXI or PCI. Look at the X-Series DAQ devices, they can do typically up to 2MSa/s for AI, not sure about digital.

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@SMRTOKS wrote:

 Also which spec in the DAQ/digitizer manual should i look for to ensure it can log up to 16 channel of data continuously?

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Use the built in logging features of DAQmx. I have recorded continuously using that features for weeks at a time for multiple channels.